Pharmaceutical formulations comprising nitrocatechol derivatives and methods of making thereof.
Abstract
The present disclosure relates to compositions and pharmaceutical formulations comprising at least one active pharmaceutical ingredient chosen from nitrocatechol derivatives of formula I as defined herein and salts, esters, hydrates, solvates and derivatives thereof and methods of making said compositions and pharmaceutical formulations.

Term
3.5 yearsleft in the term
Expires 31 March 2030.
- Priority
- Filed
- Granted
- Today
- Expires
34 claims: 17 independent, 17 dependent
- 1REIVINDICACIONES 1. Una composición, caracterizada porque comprende por lo menos un ingrediente activo farmacéutico, por lo menos un fosfato, y por lo menos un compuesto de polivinilpirrolidona;en donde el por lo menos un ingrediente activo farmacéutico es seleccionado de 1-óxido de 2,5-dicloro-3 -(5-(3,4-dihidroxi-5-nitrofenil)-1,2,4oxadiazol-3-il)-4,6- dimetilpiridina, sales y ésteres del mismo;5-[3-(2,5-dicloro-4,6-dimetilpiridin-3-il)[1,2,4]oxadiazol-5-il]-3-nitrobenceno-l, 2-diol, sales y ésteres del mismo;o combinaciones de los mismos;en donde el por lo menos un ingrediente activo farmacéutico está presente en forma granular, y en donde la composición tiene una densidad aparente mayor que 0.3 g/ml.
- 2La composición de conformidad con la reivindicación 1, caracterizada porque el ingrediente activo farmacéutico constituye de 0.02% en peso a 90% en peso de la composición.
- 3La composición de conformidad con la reivindicación 2, caracterizada porque el ingrediente activo farmacéutico constituye de 0.2% en peso a 50% en peso de la composición.
- 4La composición de conformidad con cualquiera de las reivindicaciones anteriores, caracterizada porque los gránulos comprenden además el por lo menos un fosfato IMPI INSTITUTO MEXICANO DE LA FXOFIEDAÜ INDOJTWIAl y/o el por lo menos un compuesto de polivinilpirrolidona.
- 5La composición de conformidad con cualquiera de las reivindicaciones anteriores, caracterizada porque el por lo menos un fosfato se selecciona de fosfato de calcio anhidro dibásico, fosfato de calcio dihidrato dibásico;y fosfato de calcio tribásico.
- 6La composición de conformidad con la reivindicación 5, caracterizada porque el por lo menos un fosfato es fosfato de calcio dihidrato dibásico.
- 7La composición de conformidad con cualquiera de las reivindicaciones anteriores, caracterizada porque el por lo menos un fosfato constituye de 0.5% en peso a 99.5% en peso de la composición.
- 8La composición de conformidad con la reivindicación 7, caracterizada porque el por lo menos un fosfato constituye de 10% en peso a 80% en peso de la composición.
- 9La composición de conformidad con la reivindicación 8, caracterizada porque el por lo menos un fosfato constituye de 20% en peso a 60% en peso de la composición.
- 10La composición de conformidad con cualquiera de las reivindicaciones anteriores, caracterizada porque el por lo menos un compuesto de polivinilpirrolidona se selecciona de povidona o copovidona. IMPI INSTITUTO MEXICANO Oí LA SIOSIÍÜAD INOUSTMial
- 11La composición de conformidad con la reivindicación 10, caracterizada porque el compuesto de polivinilpirrolidona es povidona.
- 12La composición de conformidad con cualquiera de las reivindicaciones anteriores, caracterizada porque el por lo menos un compuesto de polivinilpirrolidona constituye de 0.1% en peso a 40% en peso de la composición.
- 13La composición de conformidad con la reivindicación 12, caracterizada porque el por lo menos un compuesto de polivinilpirrolidona constituye de 2% en peso a 20% en peso de la composición.
- 14La composición de conformidad con la reivindicación 13, caracterizada porque el por lo menos un compuesto de polivinilpirrolidona constituye de 3% en peso a 10% en peso de la composición.
- 15La composición de conformidad con cualquiera de las reivindicaciones anteriores, caracterizada porque comprende además por lo menos un excipiente.
- 16La composición de conformidad con cualquiera de las reivindicaciones anteriores, caracterizada porque la densidad aparente de la composición es mayor que 0.4 g/ml.
- 17La composición de conformidad con la reivindicación 16, caracterizada porque la densidad aparente de la composición es mayor que 0.5 g/ml.
- 18La composición de conformidad con cualquiera IMPI INSTITUTO MEXICANO DE LA PROPIEDAD industrial de las reivindicaciones anteriores, caracterizada porque comprende además un ingrediente farmacéutico adicional seleccionado de L-DOPA o un inhibidor AADC.
- 19Una formulación farmacéutica, caracterizada porque comprende una composición de conformidad con cualquiera de las reivindicaciones anteriores.
- 20La formulación farmacéutica de conformidad con la reivindicación 19, caracterizada porque la formulación es una forma de dosificación seleccionada de tabletas y cápsulas.
- 21La formulación farmacéutica de conformidad con la reivindicación 20, caracterizada porque la formulación es una tableta que exhibe una densidad aparente de 0.5 g/ml a 1.5 g/ml.
- 22La formulación farmacéutica de conformidad con la reivindicación 21, caracterizada porque la formulación es una tableta que exhibe una densidad aparente de 0.8 g/ml a 1.2 g/ml.
- 23Un método para hacer una composición o formulación farmacéutica, caracterizado porque comprende:granular por lo menos un ingrediente activo farmacéutico para formar granulos;mezclar por lo menos un fosfato con el por lo menos un ingrediente activo farmacéutico antes, durante o después de la granulación;y mezclar por lo menos un compuesto de polivinilpirrolidona con el por lo menos un IMPI INSTITUTO MEXICANO •E (.A PROPIEDAD INDUSTRIAL ingrediente activo farmacéutico antes, durante o después de la granulación;en donde el por lo menos un ingrediente activo farmacéutico se selecciona de 1-óxido de 2,5dicloro-3-(5-(3,4-dihidroxi-5-nitrofenil)-1,2,4-oxadiazol3-il)-4,6-dimetilpiridina, sales y ésteres del mismo;5-[3(2,5-dicloro-4,6-dimetilpiridin-3-il)-[1,2,4]oxadiazol-5il]-3-nitrobenceno-l,2-diol, sales y ésteres del mismo;o combinaciones de los mismos, en donde el por lo menos un ingrediente activo farmacéutico está presente en la composición o formulación farmacéutica en forma granular;y en donde la composición tiene una densidad aparente mayor que 0.3 g/ml.
- 24El método de conformidad con la reivindicación 23, en donde el por lo menos un fosfato se selecciona de fosfato de calcio anhidro dibásico;fosfato de calcio dihidrato dibásico y fosfato de calcio tribásico.
- 25El método de conformidad con la reivindicación 24, en donde el por lo menos un fosfato es fosfato de calcio dihidrato dibásico.
- 26El método de conformidad con cualquiera de las reivindicaciones 23 a 25, en donde el por lo menos un compuesto de polivinilpirrolidona se selecciona de povidona o copovidona.
- 27El método de conformidad con la reivindicación 26, en donde el por lo menos un compuesto de IMPI INSTITUTO MEXICANO DE LA PROPIEDAD INDUSTRIAL polivinilpirrolidona es povidona.
- 28El método de conformidad con cualquiera de las reivindicaciones 23 a 27, caracterizado porque el paso de granulación se realiza utilizando un liquido de granulación.
- 29El método de conformidad con la reivindicación 28, caracterizado porque comprende además secar los granulos.
- 30El método de conformidad con cualquiera de las reivindicaciones 23 a 29, caracterizado porque comprende además tamizar los gránulos.
- 31El método de conformidad con cualquiera de las reivindicaciones 23 a 30, caracterizado porque comprende además combinar los gránulos con por lo menos un excipiente.
- 32El método de conformidad con cualquiera de las reivindicaciones 23 a 31, en donde, después de la granulación, la composición tiene una densidad aparente mayor que 0.4 g/ml.
- 33El método de conformidad con la reivindicación 32, en donde, después de la granulación, la composición tiene una densidad aparente mayor que 0.5 g/ml.
- 34El método de conformidad con cualquiera de las reivindicaciones 23 a 33, caracterizado porque cuando se hace una formulación farmacéutica, el método comprende IMPI instituto mexicano de la rropiidad industrial además conformar una forma de dosificación farmacéutica. una forma de dosificación farmacéutica incluye el paso que consiste en rellenar una cápsula con la composición. IMPI INSTITUTO MEXICANO M LA «CUIDAD industrial
Independent claims34
340 paragraphs in 57 sections, as filed
(54) Title: PHARMACEUTICAL FORMULATIONS THAT INCLUDE DERIVATIVES OF NITROCATECOL AND METHODS FOR DOING THEM.
(54) Title: PHARMACEUTICAL FORMULATIONS COMPRISING NITROCATECHOL DERIVATIVES AND METHODS OF MAKING THEREOF.
(57) Summary
The present disclosure refers to pharmaceutical compositions and formulations comprising at least one active pharmaceutical ingredient selected from nitrocatechol derivatives of formula I as defined herein and salts, esters, hydrates, solvates and derivatives thereof and methods for make the pharmaceutical compositions and formulations.
(57) Abstract
The present disclosure relates to compositions and pharmaceutical formulations comprising at least one active pharmaceutical ingredient chosen from nitrocatechol derivatives of formula I as defined herein and salts, esters, hydrates, solvates and derivatives thereof and methods of making said compositions and pharmaceutical formulations.
_I KNOW_
SKRtWtU W ICOiOMl *
Institute
Mexican Property
Industrial
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PATENT TITLE NO. 340360
Owner (s): BlAL-PORTELA & CA., SA
Address: Á Av. Da Siderurgia Nacional, P-4745-457, S. Mamede do Coronado, PORTUGAL
Name: PHARMACEUTICAL FORMULATIONS THAT INCLUDE DERIVATIVES OF NITROCATECOL AND METHODS FOR DOING THE SAME.
Classification: lnt.CI.8: A61K31 / 4245; A61K31 / 44; A61K9 / 16; A61K9 / 20
Inventor (s): TEOFILO CARDOSO DE VASCONCELOS; RICARDO JORGE DOS SANTOS
LIME; RUI CERDEIRA DE CAMPOS COSTA
Núr
MX / a / 2011/010415
Country:
US
REQUEST
Presentation date of March 2010
PRIORITY
Date: Number:
April 2009, 61 / 165,778
Twenty years
Expiration Date March 31, 2030
The reference agent is granted cor $ undas in Articles t °, 2 * phrasctón V, 6 ° fraction III, and 59 of the Industrial Property Law
In accordance with article 23 of the Industrial Law, the present patent has a validity of twenty non-extendable years, (tempted from the date of assumption of the international interest and will be subject to the payment of the fee to keep the rights. ss ¡in subscribes to the present title what is with the Industrial pity (Official Journal of the Federation '05 / 2009,06 /
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# / 01/2004, 06/16/2005, 2S / 01/2006 i & so a), sub subsection i¡¡) 4¾ 12 ° fra <amended on 07/01/2002,1 ^ 07/2004 # of the Organic Statute Sel Instituí '/ 08/2004 and 13/09/2007) J | °, 3 ° y 5i Ijuntos, Coordinator, (Sectors 29/07/2004, 04/08/2004 and 13/09/2007).
[this by articles 6 (factions Hl and 7 ° bis 2 of £ Law of the, 1, amended on 08/02/1994, 10/25/1996. 12/26/1997, 05/17/1999, 20 (0. 18 «#lW» g8 / 06/2010, 01/27/2012 and 04/09/2012); articles 1, f fraction V ines I and III of the Teteolamerito 'cK ^ Mexican Industrial Property Law (DOF14 / 12/1999, '07 / 2004 and 7/09/2007), articles 1 ° 3 ° 4 °, 5 ° fraction V moaoa), aub clause ii), 16 sections Anes I and II and Mexicano de la Ρπ | dad hdusnal ¡COr 2 / i12 / 18e ^ _<sub>r</sub>«* 5 signed on 10/10/2002, 19/07/2004, subsection a) and the penultimate paragraph of the Agreement that Magafácultades in the Directors · General IVlsionales, Holders of the OfionasRegionales, Subdirectores Divisionales. Refurbished cerdlnadores et> 4/02/2000,
Issue Date: July 7, 2016
DIVISIONAL DEPUTY DIRECTOR OF EXAMINATION OF PATENT FUND, MECHANICAL, ELECTRICAL AREAS AND REGISTRIES OF INDUSTRIAL DESIGNS AND
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Arenal No. 550. Floor 1.
> l. Santa María Tepepan town. Xochimiíco. CP. 16020,
Mexico City
3. 4 07 00 www impi gob.mx
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MX / 2016/53132
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310360
Vwfjo /// / or wsyt
PHARMACEUTICAL FORMULATIONS
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NITROCATECOL AND METHODS TO DO THE SAME
FIELD OF THE INVENTION '-<sup>1</sup>5 The present disclosure relates to pharmaceutical compositions and formulations comprising at least one pharmaceutical active ingredient that is selected from nitrocatechol derivatives and salts thereof.
BACKGROUND OF THE INVENTION
Levodopa (L-DOPA) has been used in clinical practice for several decades in the symptomatic treatment of various conditions, including Parkinson's disease. L-DOPA is able to cross the blood-brain barrier, where it is later converted to dopamine and increases its levels. However, the conversion of L-DOPA to dopamine can also occur in peripheral tissue, possibly causing adverse effects with the administration of L-DOPA. Therefore, it has become standard clinical practice to co-administer a peripheral amino acid decarboxylase inhibitor (AADC), such as carbidopa or benserazide, which prevents conversion to dopamine in peripheral tissue.
This has led to an interest in development
IMPIAS
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of catechol-O-methyltransferase (COMT) enzyme inhibitors based on the hypothesis that enzyme inhibition may provide clinical improvements in patients affected by Parkinson's disease undergoing treatment with L-DOPA, since the COMT catalyzes the degradation of L-DOPA.
It has been discovered, as exposed in the
International Publications Nos. WO 2007/013830 and WO 2007/117165 that the compounds of formula I disclosed herein, which are nitrocatechol derivatives, are potent and long-acting COMT inhibitors. These compounds are both bioactive and bioavailable. Thus, the compounds of formula I have potentially valuable pharmaceutical properties in the treatment of some disorders of the central and peripheral nervous system where inhibition of catecholamine O-methylation may have a therapeutic benefit, such as, for example, disorders Mood; movement disorders such as Parkinson's disease, parkinsonian disorders, and restless leg syndrome; gastrointestinal disturbances; states of edema formation and hypertension. Additionally, these compounds may also have activity in the treatment of other diseases and disorders, not related to
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MEXICAN INSTITUTE OF LA PRUPIEDAU
INDUSTRIAL
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inhibition of O-methylation of catecholamines.
However, it has also been discovered that the compounds of formula I can exhibit extremely low bulk density, efficient solubility and / or poor flow characteristics, which increases the difficulty in formulating and / or manufacturing a dosage formulation that contains the active compound.
SUMMARY OF THE INVENTION
The inventors have now discovered compositions and formulations thereof comprising at least one pharmaceutical active ingredient (API) selected from nitrocatechol derivatives of formula I as defined herein and salts, esters, hydrates , solvates and other derivatives thereof. Preferably, at least the nitrocatechol derivative is 2,5-dichloro-3- (5 (3,4-dihydroxy-5-nitrophenyl) -1,2,4-oxadiazol-3-yl) -4-oxide , 6-dimethylpyridine or 5- [3- (2,5-dichloro-4,6-dimethylpyridin-3yl) - [1,2,4] oxadiazol-5-yl] -3-nitrobenzene-1,2-diol. At least the nitrocatechol derivative can also be a mixture of 2,5-dichloro-3- (5- (3,4-dihydroxy-5nitrophenyl) -1,2,4-oxadiazol-3-yl) 1-oxide -4,6-dimethylpyridine and 5 [3 - (2,5-dichloro-4,6-dimethylpyridin-3-yl) - [1,2,4] oxadiazol 1ST-PROPERTY MEXICAN INSTITUTE
INDUSTRIAL
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5-yl] -3-nitrobenzene-1,2-diol. In at least one embodiment, the API may be present in granular form. In some embodiments, the compositions and / or formulations may comprise an additional API, for example the compositions and / or formulations may comprise, in addition to at least the selected API of nitrocatechol derivatives of formula 1, additional APIs such as LDOPA, a peripheral amino acid decarboxylase inhibitor (AADC), such as carbidopa or benserazide. In additional embodiments, the compositions and / or formulations may also comprise at least one phosphate derivative and at least one polyvinylpyrrolidone derivative (PVP). In various exemplary embodiments when the API is granular, at least the phosphate derivative and at least one compound derived from PVP can be, independently, intragranular (i.e., granulated with the API and / or contained within the same granules as API), extragranular (i.e. present outside the API granules) or partially intragranular and partially extragranular. The compositions can exhibit a bulk density that is higher than that of API alone, and can be significantly increased. The compositions can also exhibit good fluidity, which can be significantly improved, in certain modalities, over that of the API alone. The compositions
IMPI
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY
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they may also exhibit improvements in other characteristics such as compressibility and content uniformity (ie, the API is evenly distributed throughout the composition, for example throughout the granule).
The use of the methods described in this document can also result in improvements in the granular properties of the compositions such as improved granule size and uniformity of granular size and / or granular mass.
DETAILED DESCRIPTION OF THE INVENTION
It should be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only, and are not restrictive of the invention as claimed.
The present disclosure refers to compositions and formulations thereof comprising at least one API selected from nitrocatechol derivatives of formula I as defined herein and salts, esters, hydrates, solvates and other derivatives thereof, for at least one phosphate derivative and at least one compound derived from PVP. In at least one embodiment, the API may be present in granular form.
As used in this document, the terms
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Variations thereof refer to the particles produced by wet or dry granulation of the selected API of nitrocatechol derivatives of formula I as defined herein and salts, esters, hydrates, solvates and other derivatives of the same. The granules may further comprise at least one phosphate derivative and / or at least one compound derived from PVP.
As used herein, the term composition, and variations thereof, is intended to mean a compound comprising at least the API, at least one phosphate derivative, and at least one compound derived from PVP. In certain embodiments, the composition may comprise two or more nitrocatechol derivatives of formula I (i.e. APIs), for example the composition may comprise 2,5-dichloro-3 (5- (3,4-dihydroxy) 1-oxide -5-nitrophenyl) -1,2,4-oxadiazol-3-yl) -4,6dimethylpyridine and 5- [3- (2,5-dichloro-4,6-dimethylpyridin-3yl) - [1,2,4 ] oxadiazol-5-yl] -3-nitrobenzene-1,2-diol, at least one phosphate derivative and at least one compound derived from PVP. In at least one embodiment, the composition may comprise granules of at least the API and, in various embodiments, at least the phosphate derivative and at least the PVP-derived compound can
IMPI
INSTITUTO MEXICANO DE IA PROPIEDAD INDUSTRIAL be independently intragranular (that is, granulated with the API and / or contained within the same granules as the API), extragranular (that is, present outside the API granules), or partially intragranular and partially extragranular. For example, the phosphate derivative can be from 10% by weight to 90% by weight, from 20% by weight to 80% by weight, from 30% by weight to 70% by weight, from 40% by weight to 60% by weight or about 50% by weight intragranular, where the remaining portion is extragranular. The compound derived from PVP can be from 10% by weight to 90% by weight, from 20% by weight to 80% by weight, from 30% by weight to 70% by weight, from 40% by weight to 60% by weight or approximately 50% by weight intragranular, where the remaining portion is extragranular. The composition may further comprise at least one excipient and in a further embodiment, the composition may be suitable for filling a capsule, for making a tablet and / or for direct administration to patients, for example packed in sachets.
As used herein, the terms formulation, pharmaceutical formulation, and variations thereof, are intended to include compositions described herein that are further processed or formulated in a dosage form. The formulations may comprise a composition described in
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MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY
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this document, typically in the form of granules, in a dosage form suitable for administration to a subject, such as a capsule or a compressed form such as a tablet. The formulations may comprise a composition described herein, typically in the form of granules, mixed with at least one excipient in a dosage form suitable for administration to a subject, such as a capsule or a compressed form such as a tablet. .
As used herein, nitrocatechol derivatives of formula I are defined as follows:
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where:
Rx and R<sub>2</sub> are independently selected from hydrogen or a group which is hydrolyzable under physiological conditions, optionally substituted alkanoyl or lower aroyl;
X is a methylene group;
Y is an oxygen, nitrogen or sulfur atom, n is selected from 0, 1, 2 and 3;
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MEXICAN INSTITUTE OF IA RROPIFDAD
INDUSTRIAL
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R<sub>3</sub> is a pyridine group selected from formulas A, B, C, D, E and F which is connected as indicated by the unbranded link:
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where:
R<sub>4</sub>, R<sub>5</sub>, R<sub>6</sub> and R<sub>7</sub> are independently selected from hydrogen, an alkyl group of 1 to 6 carbon atoms, thioalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, aryloxy of 6 to 12 carbon atoms or thioaryl of 6 to 12 atoms carbon, alkanoyl group of 1 to 6 carbon atoms or aroyl of 7 to 13 carbon atoms, amino, alkylamino of 1 to 6 carbon atoms, dialkylamino of 1 to 6 carbon atoms, cycloalkylamino of 3 to 12 carbon atoms , heterocycloalkylamino of 3 to 12 carbon atoms,
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MEXICAN INSTITUTE OF industrial rROREDAD
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alkylsulfonyl of 1 to 6 carbon atoms, arylsulfonyl of 6 to 12 carbon atoms, halogen, haloalkyl of 1 to 6 carbon atoms, for example, trifluoromethyl, cyano, nitro or a heteroaryl group; or two or more of the residuals R<sub>4</sub>, R<sub>5</sub>, R<sub>6</sub> and R7 taken together represent aliphatic or heteroaliphatic rings or aromatic or heteroaromatic rings; and
P is a central unit, for example a flat unit, such as those selected from 1,3,4-oxadiazol-2,5-diyl regioisomers; 1,2,4-oxadiazol-3,5-diyl; 4methyl-4H-l, 2,4-triazol-3,5-diyl; 1,3,5-triazin-2,4-diyl;
1,2,4-triazin-3,5-diyl; 2H-tetrazol-2,5-diyl; 1,2,3thiadiazol-4,5-diyl; l-alkyl-3- (alkoxycarbonyl) -lH-pyrrol2,5-diyl where alkyl is represented by methyl, ethyl, n-propyl and n-butyl and where alkoxy is represented by methoxy, ethoxy, n-propoxy and isopropoxy ; 1alkyl-1H-pyrrole-2,5-diyl wherein alkyl is represented by methyl, ethyl, n-propyl and n-butyl; thiazol-2,4-diyl; 1H-pyrazole -1,5-diyl; pyrimidin-2,4-diyl; oxazol-2,4diyl; carbonyl; lH-imidazol-1,5-diyl; isoxazol-3,5diyl; furan-2,4-diyl; 3-alkoxycarbonylfuran-2,4-diyl wherein alkoxy is represented by methoxy, ethoxy, n-propoxy and isopropoxy; benzene-1,3-diyl; and (Z) -l-cyanoethen-l, 2-diyl. Suitable groups which are hydrolyzable under physiological conditions are well known in the field and
IMPI
MEXICAN INSTITUTE DF THE PROPERTY
INDUSTRIAL
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They include groups that form, with the atom 0, an ether, ester or ester of carbonic acid.
Preferably P is selected from 1,3,4-oxadiazol-2,5-diyl and 1,2,4-oxadiazol-3,5-diyl.
At least the nitrocatechol derivative of formula I is preferably 2,5-dichloro-3- (5 (3,4-dihydroxy-5-nitrophenyl) -1,2,4-oxadiazol-3-yl oxide ) -4,6dimethylpyridine or 5- [3 - (2,5-dichloro-4,6-dimethylpyridin-3yl) - [1,2,4] oxadiazol-5-yl] -3-nitrobenzene-l, 2-diol . At least the nitrocatechol derivative of formula I can also be a mixture of 2,5-dichloro-3- (5- (3,4-dihydroxy-5-nitrophenyl) -1,2,4-oxadiazole-1-oxide 3-yl) -4,6-dimethylpyridine and 5- [3- (2,5-dichloro-4,6-dimethylpyridin-3yl) - [1,2,4] oxadiazol-5-yl] -3-nitrobenzene-l, 2-diol. In modalities where at least the nitrocatechol derivative of formula I is a mixture of two nitrocatechol derivatives, such as 2,5-dichloro-3- (5- (3,4-dihydroxy-5-nitrophenyl) 1-oxide - 1,2,4-oxadiazol-3-yl) -4,6-dimethylpyridine and 5- [3- (2,5-dichloro-4,6-dimethylpyridin-3yl) - [1,2,4] oxadiazol-5-yl ] -3-nitrobenzene-l, 2-diol, the ratio of the two components may be approximately 50:50 or any variation thereof, such as approximately 60:40, 70:30, 80:20, 90:10, 95: 5, 97: 3 or
99: 1, or the ratio of one of the nitrocatechol derivatives may be present in an amount of up to
IMPI
MEXICAN INSTITUTE • AND INDI PROPERTY »STPIAi
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and which includes 5%, up to and including 3% or up to and including 1% of the amount of the other nitrocatechol, for example 5- [3- (2,5-dichloro-4,6-dimethylpyridin-3-yl ) [1,2,4] oxadiazol-5-yl] -3-nitrobenzene-1,2-diol may be present in an amount of up to and including 5%, up to and including 3% or up to and including 1 % of the amount of 2,5-dichloro-3- (5- (3,4-dihydroxy-5-nitrophenyl) 1,2,4-oxadiazol-3-yl) -4,6-dimethylpyridine l-oxide.
At least the API selected from nitrocatechol derivatives of formula I and salts, esters, hydrates, solvates and other derivatives thereof disclosed in this document, may exhibit low bulk density, making it difficult in this way to formulate and manufacture a dosage form. For example, 2,5-dichloro-3- (5- (3,4-dihydroxy-5-nitrophenyl) -1,2,4-oxadiazol3-yl) -4,6-dimethylpyridine l-oxide exhibits a lower bulk density than 0.1 g / ml before granulation and / or formulation and 5- [3- (2,5-dichloro-4,6-dimethylpyridin-3-yl) [1,2,4] oxadiazol-5-yl] -3-Nitrobenzene-1,2-diol can exhibit a bulk density of about 0.2 g / ml before granulation and / or formulation, and as determined by the method described below.
The formulation of low bulk density APIs can frequently give rise to many problems. For example a poor uniformity content,
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ΙΜΡΙ
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY particle segregation, little or no fluidity, high variability of average weight, cover and / or lamination of tablets and high friability of tablets.
In at least one exemplary embodiment, the amount (or dosage) of at least the API present in the compositions and / or formulations of the present disclosure is preferably a therapeutically effective amount. As used herein, "therapeutically effective amount" means an amount of a therapeutic agent that is sufficient to treat, alleviate, and / or prevent any treatable and / or preventable condition by administering a composition of the disclosure, to any degree . That amount may be, for example, an amount sufficient to exhibit a detectable therapeutic or preventive or enhancement effect. The effect may include, for example, treating, relieving, and / or preventing the conditions listed in this document. The actual amount required, for example for the treatment of any particular patient, will depend on a variety of factors including the disorder that is treated and / or prevented; its severity; the specific pharmaceutical composition used; the age, body weight, general health, gender and diet of the patient; the mode of administration; administration time; the route of administration; the speed of
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<img file="MX340360B_D0026.tif" />
excretion of the therapeutic agent; the duration of treatment; any drug used in combination or coincident with the therapeutic agent; and other such factors well known to those skilled in the field. In various embodiments, for example, a formulation, i.e., a capsule or tablet dosage form, may contain 1 mg or more of API, for example 2.5 mg or more, 5 mg or more, 10 mg or more, 20 mg or more, 40 mg or more, 50 mg or more, or 100 mg or more of API. Therefore, the API content in the composition and / or formulation can vary from 0.02% by weight to 90% by weight, for example from 0.1% by weight to 70% by weight, from 0.2% by weight to 50% by weight or from 0.3% by weight to 45% by weight.
At least the phosphate derivative of the present disclosure is any substance comprising calcium phosphate, including, but not limited to: calcium phosphate, dibasic anhydrous (eg A-TAB<sup>MR</sup>, Di-Cafos AN<sup>MR</sup>, Emcompress Anhidrous<sup>MR</sup> and Fuj icalin<sup>MR</sup>); calcium phosphate, dibasic dihydrate (eg Cafos<sup>MR</sup>, Calipharm<sup>MR</sup>, Calstar<sup>MR</sup>, Di-Cafos<sup>MR</sup>, Emcompress<sup>MR</sup>); and tribasic calcium phosphate (eg Tri-Cafos<sup>MR</sup>, TRI-CAL WG<sup>MR</sup>,
TRI-TAB<sup>mr</sup>) .
In various embodiments, the amount of at least one phosphate derivative present in a composition and / or formulation of the present disclosure may constitute
<img file="MX340360B_D0027.tif" />
from 0.5% by weight to 99.5% by weight of the composition and / or formulation, for example, from 10% by weight to 80% by weight, from 20% by weight to 60% by weight or from 25% by weight to 40 % by weight, such as for example 35% by weight, of the total weight of the composition and / or formulation. At least the phosphate derivative can be intragranular, extragranular or partially intragranular and partially extracellular. The amount of at least the phosphate derivative can vary depending, in part, on the desired dosage and bulk density.
At least the PVP-derived compound of the present disclosure is any substance comprising polyvinylpyrrolidone (PVP) or a substituted version thereof, including, but not limited to: povidone (eg, Plasdone<sup>MR</sup> and Kollidon<sup>I</sup>); copovidone (eg Plasdone S-630<sup>MR</sup> and Kollidon VA-64<sup>MR</sup>); and crosslinked PVP (also known as crospovidone).
In various embodiments, the amount of at least one compound derived from PVP that is present in a composition and / or formulation of the present disclosure may constitute from 0.1% by weight to 40% by weight of the composition and / or formulation, per Example, from 1% by weight to 30% by weight, from 2% by weight to 20% by weight, from 3% by weight to 10% by weight or from 6% by weight to 8% by weight, such as for example 7% by weight of the total weight of the composition and / or
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INDUSTRIAL formulation. The compound derived from PVP can be intragranular, extragranular or partially intragranular and partially extragranular. The amount of the at least PVP-derived compound will vary depending, in part, on the desired dosage and bulk density.
The invention also relates to a method for making a composition or formulation of the invention comprising the steps consisting of:
- granulating at least one pharmaceutical active ingredient selected from nitrocatechol derivatives of formula I and salts, esters, hydrates, solvates and other derivatives thereof to form granules;
- mixing at least one phosphate derivative with at least the pharmaceutical active ingredient before, during or after granulation; and mixing at least one compound derived from polyvinylpyrrolidone with at least the pharmaceutical active ingredient before, during or after granulation;
<td></td><td colspan="3">At least the API, so</td><td>minus one</td><td colspan="2">derived from</td>
<td>phosphate</td><td>and at least</td><td>a</td><td>compound</td><td>derivative</td><td>of PVP</td><td>I know</td>
<td>they can</td><td>combine by</td><td>the</td><td>mixed</td><td>(too</td><td>referred</td><td>in</td>
this document as a combination). The appropriate apparatus and mixing time and speed can be determined by those experienced in the field based on, for example, the amount of material present, the type
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INDUSTRIAL mixing process used and other parameters known to those of experience in the field. For example, in various embodiments, the components can be mixed manually, using a V-type mixer, a high shear stress mixer, or any other mixing apparatus and / or process known to those of experience in the field. As a further example, in various embodiments, the components can be mixed for any appropriate period of time, such as from 1 to 30 minutes or from 2 to 10 minutes.
The granules can be formed by dry or wet granulation. Preferably, the granules are wet formed using at least one granulating liquid. By way of example, at least the granulating liquid can be selected from water, ethanol, isopropanol and / or acetone. Preferably, the granulating liquid is water. The appropriate mixing apparatus and time and speed for granulation can be determined by those of skill in the field based on, for example, the amount of material and the amount of granulating liquid, if present. In various modalities, the components can be granulated manually, using a high shear mixer, a planetary mixer or any other
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<img file="MX340360B_D0028.tif" />
granulating apparatus and / or process that is known to those of experience in the field. As a further example, in various embodiments, the components can be granulated over any appropriate period of time, such as from 1 to 60 minutes or from 2 to 30 minutes. The determination of the granulation term is within the ability of the skilled person but can be determined by observing the stabilization of the granule size and the cohesion of particles that result in a decrease in the air trapped inside the granule. or by achieving a steady state of rheological or correlated determination of voltage, conductivity, torque, power consumption, or near IR techniques. As a further example, granulation rates can range from 5 to 100% of the granulator mix rate, such as from 25 to 100%.
After the wet granulation process is complete, the granules can then be dried. The granules should be dried at loss on drying (LOD) values of less than 6%, preferably less than 5% and more preferably between 1-3%. A suitable technique for determining LOD values is as described in USP 31, vol. 1, test <731>, The United States Pharmacopeia Convention, 2008. The test
<img file="MX340360B_D0029.tif" />
the substance a using a test then constant (m<sub>F</sub>) .
the use of temperature implies the weighting of the exact way to be tested (m<sub>0</sub>), (for example, sample quantity from 1 to 10 g). The specimen is dried at 105 ° C until a weight is achieved.Humidity can be calculated using the following expression:
LOD (%) = [(m<sub>0</sub>-mf) / m<sub>0</sub>] *100
The appropriate drying apparatus and time and drying can be determined by those of experience in the field based on, for example, the amount of material present, the moisture content of the material, and the granulating liquid. As non-limiting examples, a fluidized bed drier or tray drier, for example at a temperature of 25 ° C or higher, 40 ° C or higher or 70 ° C or higher, can be used to dry the granules. For example, the granules can be dried at a temperature of 66 ° C.
The method may further include the step of sieving the granules. Sieving the granules results in granules of a homogeneous particle size and can be used to select particles of an advantageous size for the formulation or manufacture of a dosage form. In various modalities, the granules can be sieved on a 0.5 mm or larger screen.
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INSTITUTO MEXICANO DE LA RXOHEDAP INDUSTRIAL large, for example a screen of 0.6 mm, 0.8 mm, 1.0 mm and
<img file="MX340360B_D0030.tif" />
1.6 mm.
The composition may further include at least one excipient which can be combined with at least API, at least one phosphate derivative, and at least one compound derived from PVP. In one embodiment, at least the excipient is combined with the API granules. At least the excipient can be selected from conventional excipients such as a) fillers, diluents or extenders, for example, calcium carbonate, fructose or kaolin; b) binding substances, for example gum arabic, sucrose and zein; c) disintegrating agents, for example, agar and calcium carbonate; d) lubricants, for example, calcium stearate, glycerol munoestearate, glyceryl behenate, glyceryl palmitostearate, hydrogenated castor oil, triglyceride lauryl sulfate, hydrogenated vegetable oil, magnesium stearate, intermediate, poloxamer, magnesium, polyethylene glycol chain , sodium benzoate, sodium chloride, sodium lauryl sulfate, sodium stearyl fumarate, stearic acid, talc, sucrose stearate and zinc stearate; and e) sliding substances, for example tribasic calcium phosphate, calcium silicate, cellulose, colloidal silicon dioxide powder, magnesium silicate,
IMPI
INSTITUTO MEXICANO OE LA PROPERTY INDUSTRIAL magnesium trisilicate, starch and talc. In certain embodiments, the composition and / or formulation does not comprise any additional excipients.
At least the excipient can be added before or during granulation of at least the API, and thus can be present as an intragranular excipient. Alternatively, at least the excipient can be added to the formulation after granulation, for example by combining with the granules, and thus can be present as an extragranular excipient. In various embodiments, at least a first excipient may be added before or during granulation and at least a second excipient and / or more than at least the first excipient may be added to the composition after granulation. For example, in various embodiments, fillers, binders, and disintegrating agents can be added before or during granulation, while flow agents and slip agents can be added after granulation.
In some exemplary modalities, the composition and / or formulation comprises the following:
<img file="MX340360B_D0031.tif" />
<td>API</td><td> 0.2</td><td> - 50.0%</td><td>in</td><td>weight</td>
<td>Phosphate derivative</td><td> 5.0</td><td> - 50.0%</td><td>in</td><td>weight</td>
<td>Additional filler material</td><td> 0.0</td><td> - 85.0%</td><td>in</td><td>weight</td>
<img file="MX340360B_D0032.tif" />
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INDUSTRIAL
<img file="MX340360B_D0033.tif" />
Povidone derivative
Lubricants
Disintegrating agents
1.0
1.0
1.0
15.0% by weight
15.0% by weight
15.0% by weight
<td>API</td><td></td><td></td><td> 0.2</td>
<td>Derivative</td><td>of</td><td>phosphate</td><td> 20.0</td>
<td>Material</td><td>of</td><td>additional filler</td><td> 0.0</td>
<td>Derivative</td><td>of</td><td>povidone</td><td> 3.0</td>
<td colspan="2">Lubricants</td><td></td><td> 1.0</td>
<td colspan="3">Disintegrating agents</td><td> 3.0</td>
30.0% by weight
50.0% by weight 85.0% by weight
10.0% by weight
10.0% by weight
10.0% by weight
<td>API</td><td></td><td></td><td> 20.0</td><td>- 50.0% by weight</td>
<td>Derivative</td><td>of</td><td>phosphate</td><td> 20.0</td><td>- 50.0% by weight</td>
<td>Material</td><td>of</td><td>additional filler</td><td> 0.0 -</td><td>55.0% by weight</td>
<td>Derivative</td><td>of</td><td>povidone</td><td> 3.0 -</td><td>10.0% by weight</td>
<td colspan="2">Lubricants</td><td></td><td> 1.0 -</td><td>10.0% by weight</td>
<td>Agents i</td><td colspan="2">disintegrating</td><td> 3.0 -</td><td>10.0% by weight</td>
In various exemplary embodiments, the composition comprising granules of at least the API, at least the phosphate derivative, and at least the PVP-derived compound can be used to make a formulation, such as, for example, can be used to fill capsules or can be compressed into tablets.
Capsules for use herein
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INDUSTRIAL DESCRIPTION include, but are not limited to, gelatin capsules and hydroxypropyl methylcellulose (hypromellose) capsules. Suitable methods for filling these capsules with a composition according to an embodiment of the description are well known to those of experience in the field.
The tablets of the present disclosure can be formed by any method known to those of skill in the field such as compression. In at least one embodiment of the present disclosure, the tablets can be coated, for example with water-based film coatings, solvent-based film coatings and / or sugar coatings.
The formulations of the invention can also be colored, for example by including a colorant in the composition of the invention or by coating the composition or formulation.
The compositions may exhibit improved bulk density and / or flow properties relative to those of the API alone. As used herein, the terms "improved bulk density, significantly improved bulk density, and variations thereof" mean that the bulk density of the composition is approximately at least double, for
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MEXICAN INSTITUTE • AND INDUSTRIAL PROPERTY at least three times, at least four times or at least five times that of the API alone. Within the skill of a person of experience in the field is to determine the bulk density of a compound or composition using generally accepted methods in the field. However, suitable methods include, for example, the European Pharmacopoeia edition 6, Exhibit 2.9.15 apparent volume, pages 285-286, EDQM, 2007 and USP 31, vol. 1, Exhibit <616> Pages 231-232, The United States
Pharmacopeia Convention, 2008. A suitable method is described below:
Apparatus:
compaction apparatus capable of producing 250 ± 15 light blows from a height of 3 ± 0.2 mm in 1 minute. The support for the graduated cylinder with its handle, has a mass of 450 ± 5 g
- a 250 ml graduated cylinder (2 mi intervals) with a mass of 220 ± 40 g
Method: in a dry cylinder, introduce without
<img file="MX340360B_D0034.tif" />
<td>compact, 100.0 g</td><td>(mg)</td><td>of</td><td>the</td><td>substance</td><td>of</td><td>proof.</td>
<td>Secure cylinder</td><td>in</td><td>its</td><td colspan="2">handle. Read</td><td>the</td><td>volume</td>
<td>apparent not settled</td><td colspan="2">(V<sub>or</sub>) until</td><td>the</td><td>millimeter</td><td>plus</td><td>near.</td>
Carry out 10, 500 and 1250 light strokes and read the corresponding volumes V<sub>10</sub>, V<sub>5O</sub>or, I saw<sub>25</sub>or / to the nearest millimeter. If the difference between V<sub>500</sub> and V1250 is
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OF THE PROPERTY
INDUSTRIAL greater than 2 ml, carry out another 1250 light strokes.
Alternatively, if 100.0 g cannot be selected, select a test sample of any mass but with a volume between 50 ml and 250 ml, measure its apparent volume, V<sub>or</sub> as described above, and weigh the sample and specify the mass in the result expression. The bulk density can then be determined in g / ml using the following formula:
m / V<sub>0</sub> where m is the mass in grams and V<sub>or</sub> the apparent volume without compaction.
The bulk density after compaction can then be determined in g / ml using the following formula:
W / V1250 where m is the mass in grams and V-_<sub>2</sub>5th is the apparent volume after 1250 centers.
For example, as discussed above, 2,5-dichloro-3- (5- (3,4-dihydroxy-5-nitrophenyl) 1.2.4-oxadiazol-3-yl) -4,6-dimethylpyridine, a nitrocatechol of formula I exhibits a bulk density of less than 0.1 g / ml before granulation. Compositions according to the present disclosure comprising 2,5-dichloro-3- (5- (3,4-dihydroxy-5-nitrophenyl) 1.2.4-oxadiazol-3-yl) -4.6 granules -dimethylpyridine may exhibit
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<img file="MX340360B_D0035.tif" />
bulk densities of 0.2 g / ml or greater, for example 0.4 g / ml or greater or 0.5 g / ml or greater, or 0.6 g / ml or greater. The compositions of the present disclosure for use as final combinations for capsule filling or tabletting and comprising 2,5-dichloro-3 (5- (3,4-dihydroxy-5-nitrophenyl) -1-oxide, 2,4-Oxadiazol-3-yl) -4,6dimethylpyridine may exhibit bulk densities or bulk densities of 0.2 g / ml or greater, for example 0.4 g / ml or greater, 0.5 g / ml or greater and 0.6 g / ml or greater.
In certain embodiments of the disclosure, the compressed disclosures of the disclosure, such as tablets, exhibit a bulk density of from 0.5g / mL to 1.5g / mL, such as from 0.6g / mL to 1.4g / mL, from 0.7g / mL at 1.3 g / mL or from 0.8 g / mL to 1.2 g / mL.
The bulk density of a compressed formulation is measured in terms of the mass and volume of the formulation and is perfectly within the capabilities of the skilled person.
Within the skill of a person of experience in the field is to determine the compressibility of a compound or composition using generally accepted methods in the field. However, suitable methods include, for example, using USP 31, vol. 1, Test <1174>, The United States Pharmacopeia Convention,
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<img file="MX340360B_D0036.tif" />
2008, and measure both the apparent volume (V<sub>or</sub>) as the apparent volume after compaction (Vf) of the granules. The compressibility index (CI) can then be calculated using the following formula:
CI (%) = 100 x [(V<sub>or</sub>-V,) / V<sub>or</sub>]
Within the skill of a person of experience in the field is determining the fluidity of a compound or composition using generally accepted methods in the field. However, suitable methods include, for example, testing the flow rate through a port described in USP 31, vol. 1, test <1174>, The United States Pharmacopeia Convention, 2008, in which flowability can be measured as the mass per time flowing through the 10mm diameter opening of a glass funnel.
Unless otherwise indicated, it should be understood that all numbers used in the specification and claims are in all cases modified by the term "approximately", whether or not it is so established. It should also be understood that the precise numerical values that are used in the specification and claims form additional embodiments of the description. Efforts have been made to
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INSTITUTO MEXICANO DE LA PROPIEDAD INDUSTRIAL ensure the accuracy of the numerical values disclosed in the Examples. However, any measured numerical value may inherently contain certain errors that result from the standard deviation found in its respective measurement technique.
As used in this document, the use of the, the, one or one means at least one and should not be limited to only one unless explicitly stated otherwise. Thus, for example, the use of the formulation or a formulation is intended to mean at least one formulation.
Other modalities of description will be apparent to those skilled in the field from consideration of the specification and practice of the present description. The specification and examples are intended to be considered as exemplary only, where the scope and true spirit of the invention is indicated by the claims.
EXAMPLES
The following examples are not intended to be limiting of the invention as claimed.
Example 1
Four laboratory-scale high-dose capsules were made by first mixing the API and phosphate
<img file="MX340360B_D0037.tif" />
<img file="MX340360B_D0038.tif" />
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OF IA PROPERTY VS. INDUSTRIAL Dicalcium and / or Microcrystalline Cellulose, Croscarmellose Sodium and / or Povidone and / or Pregelatinized Starch in the amounts set forth in Table 1 below in a laboratory scale high shear mixer (Stephan). The API used in these examples was 2,5-dichloro-3- (5- (3,4-dihydroxy-5nitrophenyl) -1,2,4-oxadiazol-3-yl) -4,6- dimethylpyridine. Purified water was added to each mix and the mixes were granulated.
The granules were then dried in a laboratory scale fluidized bed dryer (Aeromat). The dry granules were sieved and then combined with the remaining ingredients set out in Table 1 in a 1 L free-fall mixer (Turbula). Capsules were filled with the composition using a manual filling machine.
The final granules and compositions were evaluated for bulk density and bulk density after compaction using the methods described above. Flowability was also evaluated by testing the flow rate through an orifice described in USP 31, vol. 1, test <1174>, The United States Pharmacopeia
Convention, 2008. Flowability was measured as the mass per time flowing through the 10mm diameter opening of a glass funnel.
<img file="MX340360B_D0039.tif" />
Table 1
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<td>Lot</td><td>TO</td><td>B</td><td>C</td><td>D</td>
<td>Ingredient (%)</td><td></td><td></td><td></td><td></td>
<td>API</td><td> 35.1</td><td> 35.1</td><td> 35.1</td><td> 35.1</td>
<td>Dicalcium phosphate</td><td> 33.3</td><td> 33.3</td><td></td><td></td>
<td>Microcrystalline Cellulose (Avlcel PH 102<sup>MR</sup>)</td><td> 12.3</td><td> 12.3</td><td> 31.6</td><td></td>
<td>Microcrystalline Cellulose (Avlcel PH 101<sup>MR</sup>)</td><td></td><td></td><td></td><td> 45.6</td>
<td>Sodium croscarmellose</td><td> 1.8</td><td></td><td></td><td></td>
<td>Povldona</td><td> 7.0</td><td></td><td> 7.0</td><td></td>
<td>Pregelatinized starch</td><td></td><td> 8.8</td><td></td><td> 8.8</td>
<td>Purified water</td><td>CS</td><td>CS</td><td>CS</td><td>CS</td>
<td>Microcrystalline Cellulose (Avicel PH 102<sup>MR</sup>)</td><td></td><td></td><td> 15.8</td><td></td>
<td>Sodium croscarmellose</td><td> 3.5</td><td> 3.5</td><td> 3.5</td><td> 3.5</td>
<td>Colloidal Silica Hydrate</td><td> 3.5</td><td> 3.5</td><td> 3.5</td><td> 3.5</td>
<td>talcum powder</td><td> 1.8</td><td> 1.8</td><td> 1.8</td><td> 1.8</td>
<td>Magnesium stearate</td><td> 1.8</td><td> 1.8</td><td> 1.8</td><td> 1.8</td>
<td>Bulk density of granules [g / mL]</td><td> 0.425</td><td> 0.365</td><td> 0.323</td><td> 0.236</td>
<td>Bulk density after compaction of the granules [g / mL] after 10 centers</td><td> 0.462</td><td> 0.388</td><td> 0.359</td><td> 0.248</td>
<td>1250 centers</td><td> 0.556</td><td> 0.487</td><td> 0.414</td><td> 0.337</td>
<td>Granules fluidity</td><td> + + +</td><td> + + -</td><td> + + -</td><td> —</td>
<td>Apparent density of the final composition [g / mL]</td><td> 0.485</td><td> 0.395</td><td> 0.360</td><td> 0.240</td>
<td>Bulk density after compaction of the final composition [g / L] after 10 centers</td><td> 0.527</td><td> 0.416</td><td> 0.387</td><td> 0.247</td>
<td>1250 centers</td><td> 0.614</td><td> 0.506</td><td> 0.462</td><td> 0.320</td>
<td>Fluidity of the final composition</td><td> + + +</td><td> + + -</td><td> + + -</td><td> + - -</td>
IMPIOUS?
INSTITUTO MEXICANO ot la rxonr.DAD
INtMJSTXIAL
Fluency: + + + = very good; - - - = not flowable
As can be seen from Table 1, although the presence of povidone or dicalcium phosphate improved the properties of bulk density and fluidity (see Lots B and C) compared to the absence of them (see Lot D), the improvement in bulk density was significantly greater when both excipients were present (see Lot A). Similar flowability data were obtained for the granules and the final mix, where the granules and the final mix in Lot A exhibit very good fluidity.
Example 2
To prepare low-dose capsules, two variations of the Lot A formulation were prepared on a laboratory scale. The two batches of low dosage capsules were made using the compositions set forth in Table 2 below. First, the API, dicalcium phosphate, microcrystalline cellulose, croscamellose sodium, and povidone in the amounts set forth in Table 3 below were mixed in a type V mixer. The API used in these examples was 2,5-dichloro-3- (5 - (3,4-dihydroxy-5 nitrophenyl) -1,2,4-oxadiazol-3-yl) -4,6-oxide -dimethylpyridine. Purified water was added to the mixture and the mixture was manually stirred and granulated.
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<img file="MX340360B_D0040.tif" />
The granules were then dried in a tray dryer at 50 ° C for approximately 300 minutes. The dried granules were sieved. The screened granules were then combined with the remaining croscarmellose sodium and silica colloidal hydrate set forth in Table 3 in a type V mixer. Then, the magnesium stearate and talc were added and mixed. Capsules were filled with the composition using a capsule filling machine.
Granules and final compositions were evaluated for bulk density and bulk density after compaction and flow using the methods written in Example 1 above. The compressibility index was evaluated using USP 31, volume 1, test <1174>, The United States Pharmacopeia Convention, 2008 and measuring both the apparent volume (V<sub>or</sub>) as the apparent volume after compaction (V<sub>F</sub>) of the granules. The compressibility index (Cl) was then calculated using the following formula:
Cl (%) = 100 x I (V<sub>or</sub>-V<sub>F</sub>) / Vo]
The results are set forth in Table 2 below.
Table 2
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<td>Lot</td><td>AND</td><td>F</td>
<td>Ingredient (%)</td><td></td><td></td>
<td>API</td><td> 1.8</td><td> 1.8</td>
<td>Dicalcium Phosphate, dlhldratado (Ecompress)</td><td> 33.3</td><td> 57.9</td>
<td>Mlcrocrlstallna cellulose (Avlcel PH 102<sup>MR</sup>)</td><td> 45.6</td><td> 21.0</td>
<td>Sodium croscarmellose</td><td> 1.8</td><td> 1.8</td>
<td>Povidone</td><td> 7.0</td><td> 7.0</td>
<td>Purified water</td><td>cs</td><td>cs</td>
<td>Sodium croscarmellose</td><td> 3.5</td><td> 3.5</td>
<td>Colloidal Silica Hydrate</td><td> 3.5</td><td> 3.5</td>
<td>talcum powder</td><td> 1.8</td><td> 1.8</td>
<td>Magnesium stearate</td><td> 1.8</td><td> 1.8</td>
<td>Apparent density of the granules [g / ml]</td><td> 0.53</td><td> 0.63</td>
<td>Bulk density after compaction of the granules [g / mL] after 1250 centers</td><td> 0.63</td><td> 0.74</td>
<td>Compressibility index (%)</td><td> 6.0</td><td> 5.5</td>
<td>Flow (g / sec.)</td><td> 17.6</td><td> 19.4</td>
As seen in Table 2 above, was the bulk density of the granules in Lot F much higher than that of the high dosage formulations previously studied? therefore, it was not possible to fill the capsules with granules from batch F with a mass
5 adequate. However, Lot E gave rise to granules and
<img file="MX340360B_D0041.tif" />
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INSTITUTO MEXICANO OE INDUSTRIAL PROPERTY capsules with properties similar to those of the high dosage formulations of Example 1. Lot E also exhibited good flow and compressibility properties.
Example 3
Three batches of pilot scale capsules of varying dosages were made using the compositions set forth in Table 3 below. Lot H is for low dosage capsules, Lot J is for intermediate dosage capsules and Lot L is for high dosage capsules.
API, dicalcium phosphate, microcrystalline cellulose, croscarmellose sodium, and povidone were first mixed in the amounts set forth in Table 3 below in a high shear mixer-glanulator. The API used in these examples was 2,5-dichloro-3- (5- (3,4-dihydroxy-5-nitrophenyl) -1,2,4-oxadiazol3-yl) -4,6-dimethylpyridine 1-oxide. Purified water was added to the mix and the mix was stirred in a high shear mixer-granulator.
The granules were then dried in a fluidized bed dryer. The dried granules were sieved. The sieved granules were then combined with the remaining croscamellose sodium and silica colloidal hydrate which are set forth in Table 3 in a type V mixer. Then, the<sub>35</sub> IMPI
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY magnesium stearate and talc were added and mixed. Capsules were filled with the compositions using a capsule filling machine.
Additionally, two laboratory scale batches, Lot G (low dosage) and Lot K (high dosage), were made by the method set forth in Example 2. The compositions of these batches are set forth in Table 3 below.
The granules, compositions, and capsules were evaluated in the same manner as set forth in Example 2 and the results are set forth in Table 3 below. Additionally, the uniformity of mass was evaluated by means of the individual weight of 20 capsules and the average mass and standard deviation were calculated. These results are also set forth in Table 3.
<img file="MX340360B_D0042.tif" />
Table 3
<td>Lot</td><td>G</td><td>H</td><td>J</td><td>K</td><td>L</td>
<td>Ingredient (%)</td><td></td><td></td><td></td><td></td><td></td>
<td>API</td><td> 1.8</td><td> 1.8</td><td> 8.8</td><td> 35.1</td><td> 35.1</td>
<td>Dicalcium Phosphate (Emcompress)</td><td> 33.3</td><td> 33.3</td><td> 33.3</td><td> 33.3</td><td> 33.3</td>
<td>Mlcrocrlstallna cellulose (Avlcel PH 102<sup>MR</sup>)</td><td> 45.6</td><td> 45.6</td><td> 38.6</td><td> 12.3</td><td> 12.3</td>
<td>Sodium croscarmellose</td><td> 1.8</td><td> 1.8</td><td> 1.8</td><td> 1.8</td><td> 1.8</td>
<td>Povldona</td><td> 7.0</td><td> 7.0</td><td> 7.0</td><td> 7.0</td><td> 7.0</td>
<td>Purified water</td><td>cs</td><td>cs</td><td>cs</td><td>cs</td><td>cs</td>
IMPI
MEXICAN INSTITUTE '· * OF THE PROPERTY
<td>Sodium croscarmellose</td><td> 3.5</td><td> 3.5</td><td> 3.5</td><td>-industrial 3.5</td><td> - 3.5</td>
<td>Colloidal Silica Hydrate</td><td> 3.5</td><td> 3.5</td><td> 3.5</td><td> 3.5</td><td> 3.5</td>
<td>talcum powder</td><td> 1.8</td><td> 1.8</td><td> 1.8</td><td> 1.8</td><td> 1.8</td>
<td>Magnesium stearate</td><td> 1.8</td><td> 1.8</td><td> 1.8</td><td> 1.8</td><td> 1.8</td>
<td>Bulk density of granules fg / mL]</td><td> 0.53</td><td> 0.88</td><td> 0.82</td><td> 0.36</td><td> 0.76</td>
<td>Bulk density after granule compaction [g / mL] after 1250 centers</td><td> 0.63</td><td> 0.91</td><td> 0.87</td><td> 0.43</td><td> 0.83</td>
<td>Compressibility index (%)</td><td> 6.0</td><td> 5.4</td><td> 6.7</td><td> 10.5</td><td> 6.2</td>
<td>Flow (g / sec.)</td><td> 17.6</td><td> 23.5</td><td> 24.6</td><td> 18</td><td> 23.4</td>
<td>Mass uniformity (RSD%) of size 0 capsules</td><td> 4.2</td><td> 2.4</td><td> 2.6</td><td> 5.3</td><td> 2.9</td>
The results set forth in Table 3 above show that most of the properties of the pilot scale batches were improved with refinement of the process (ie compared to the batches set forth in Examples 1-2 above). Furthermore, the bulk density, the bulk density after compaction and the flow rate, in particular, indicate the achievement of a final product with properties surprisingly superior to those of API. The API used in the batches of the present example and the others exposed in this document have a very low bulk density (<0.1 g / ml) and no flow; while the granules of some
IMPI
The MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY of the present lots exhibit bulk densities higher than 0.8 g / ml (an increase of more than 800%) and a flow rate higher than 20 g / s. Even at high API dosages (for example around 37%), the bulk density was greatly improved; less than 0.1 g / ml to 0.76 g / ml.
Comparative Example 1
Five high-dose capsules were made by first mixing the API, the first amount of microcrystalline cellulose, the first amount of ethyl cellulose, and cornstarch in the amounts set forth in Table 4 in a high shear mixer. The API used in these examples was 2,5-dichloro3- (5- (3,4-dihydroxy-5-nitrophenyl) -1,2,4-oxadiazol-3-yl) 4,6-dimethylpyridine 1-oxide . Purified water was added to each mix and the mixes were granulated.
The granules were then dried in a fluidized bed dryer (Aeromat). The dry granules were sieved and then combined with the remaining ingredients set out in Table 4 in a 1 L free-fall mixer (Turbula). Capsules were filled with the composition using a manual filling machine.
<img file="MX340360B_D0043.tif" />
<img file="MX340360B_D0044.tif" />
Table 4
IMPI
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY
<td>Lot</td><td>AC</td><td>CB</td><td>DC</td><td>CD</td><td>EC</td>
<td>Ingredient (%)</td><td></td><td></td><td></td><td></td><td></td>
<td>API</td><td> 35.1</td><td> 35.1</td><td> 35.1</td><td> 35.1</td><td> 35.1</td>
<td>Microcrystalline cellulose</td><td> 17.5</td><td></td><td> 17.5</td><td></td><td> 15.8</td>
<td>Ethylcellulose</td><td></td><td> 1.8</td><td></td><td> 1.8</td><td> 1.8</td>
<td>Cornstarch</td><td> 8.8</td><td> 8.8</td><td> 8.8</td><td> 8.8</td><td> 8.8</td>
<td>Purified water</td><td>cs</td><td>cs</td><td>cs</td><td>cs</td><td>cs</td>
<td>Microcrystalline cellulose</td><td> 28.1</td><td> 43.9</td><td></td><td></td><td> 14.0</td>
<td>Ethylcellulose</td><td></td><td></td><td> 28.1</td><td> 43.9</td><td> 14.0</td>
<td>Sodium croscarmellose</td><td> 3.5</td><td> 3.5</td><td> 3.5</td><td> 3.5</td><td> 3.5</td>
<td>Colloidal Silica Hydrate</td><td> 3.5</td><td> 3.5</td><td> 3.5</td><td> 3.5</td><td> 3.5</td>
<td>talcum powder</td><td> 1.8</td><td> 1.8</td><td> 1.8</td><td> 1.8</td><td> 1.8</td>
<td>Magnesium stearate</td><td> 1.8</td><td> 1.8</td><td> 1.8</td><td> 1.8</td><td> 1.8</td>
<td>Granules bulk density [g / mL]</td><td> 0.175</td><td> 0.120</td><td> 0.150</td><td> 0.0100</td><td> 0.114</td>
<td>Bulk density after granule compaction [g / mL] after 10 centers</td><td> 0.177</td><td> 0.124</td><td> 0.156</td><td> 0.103</td><td> 0.118</td>
<td>1250 centers</td><td> 0.278</td><td> 0.190</td><td> 0.246</td><td> 0.172</td><td> 0.190</td>
<td>Granules fluidity</td><td> —</td><td> —</td><td> —</td><td> —</td><td> —</td>
<td>Apparent density of the final mixture [g / mL]</td><td> 0.210</td><td> 0.210</td><td> 0.195</td><td> 0.190</td><td> 0.185</td>
<td>Bulk density after compaction of the final mixture [g / mL] after 10 centers</td><td> 0.217</td><td> 0.217</td><td> 0.203</td><td> 0.200</td><td> 0.197</td>
<td>1250 centers</td><td> 0.292</td><td> 0.292</td><td> 0.275</td><td> 0.271</td><td> 0.253</td>
<td>Fluidity of the final mixture</td><td> + - -</td><td> + - -</td><td> + - -</td><td></td><td></td>
IMPI
MEXICAN INSTITUTE OF PROPERTY
INDUSTRIAL
<img file="MX340360B_D0045.tif" />
The granules and final compositions were evaluated in the manner set forth in Example 1 and the results are set forth in Table 4 above. The formulations exhibited a small to slight improvement in bulk density and poor to insufficient flow properties.
IMPI
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY
<img file="MX340360B_D0046.tif" />
Contents57
46 sheets
Sheet 1 Sheet 2 Sheet 3 Sheet 4 Sheet 5 Sheet 6 Sheet 7 Sheet 8 Sheet 9 Sheet 10 Sheet 11 Sheet 12 Sheet 13 Sheet 14 Sheet 15 Sheet 16 Sheet 17 Sheet 18 Sheet 19 Sheet 20 Sheet 21 Sheet 22 Sheet 23 Sheet 24 Sheet 25 Sheet 26 Sheet 27 Sheet 28 Sheet 29 Sheet 30 Sheet 31 Sheet 32 Sheet 33 Sheet 34 Sheet 35 Sheet 36 Sheet 37 Sheet 38 Sheet 39 Sheet 40 Sheet 41 Sheet 42 Sheet 43 Sheet 44 Sheet 45 Sheet 46
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| Document | Office | Kind | Date |
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| 16577809 | United States of America | P | |
| 16577809 | United States of America | P | |
| 61165778 | United States of America | – | |
| 2010000014 | Portugal | W | |
| 2010000014 | Portugal | W | |
| 61165778 | – | – | – |
| PCTPL2010000014 | – | – | – |
| US20090165778P | – | – | – |
| WO2010PT00014 | – | – | – |
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| Grant or registrationFG | FG |
Numbers
- Publication
- 340360
- Publication, DOCDB
- 340360
- Publication, EPODOC
- MX340360
- Application
- 2011010415
- Application, DOCDB
- 2011010415
- Application, EPODOC
- MX20110010415
Titles2
- Spanish
- FORMULACIONES FARMACEUTICAS QUE COMPRENDEN DERIVADOS DE NITROCATECOL Y METODOS PARA HACER LAS MISMAS.
- English
- PHARMACEUTICAL FORMULATIONS COMPRISING NITROCATECHOL DERIVATIVES AND METHODS OF MAKING THEREOF.
Classification
- CPC, 22
- A61K9/1611
- A61K31/4439
- A61K31/4245
- A61K9/1635
- A61K9/1652
- A61K9/4808
- A61K9/4858
- A61K9/4866
- A61K31/44
- A61K45/06
- A61P1/00
- A61P1/04
- A61P25/02
- A61P25/14
- A61P25/16
- A61P25/18
- A61P43/00
- A61P7/10
- A61P9/12
- A61K9/20
- A61K9/4833
- A61K31/41
- IPC, 4
- A61K9 16
- A61K31 4245
- A61K31 44
- A61K9 20