Nova Patents
AT523484T

Optical resolution of 3-carbamoylmethyl-5-methyl hexanoic acid

Abstract

Process for the optical resolution of the acid (±) -3- (carbamoylmethyl) -5-methylhexanoic acid (CMH-racemate), comprising: a) combining CMH-racemate, a solvent selected from the group consisting of ketone, ester, nitrile, C 1-4 alcohol, water or mixtures thereof, a reagent for the chiral resolution of an amino alcohol and its salts to obtain a precipitate; b) isolating the precipitate; c) adding a solvent selected from the group consisting of ketone, C 1-8 alcohol, water, and mixtures thereof and a strong mineral acid.

Term

Term ended

Expired 10 May 2026, 0.4 years ago.

  1. Priority
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59 members in 13 offices

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Priority claims6

Priority claims
DocumentOfficeKindDate
67978405United States of AmericaP
68969905United States of AmericaP
73300905United States of AmericaP
73563405United States of AmericaP
74095005United States of AmericaP
2006018273United States of AmericaW

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CA2603215A1CanadaA1
WO2006110783A2World Intellectual Property Organization (WIPO)A2
CA2604600A1CanadaA1
CA2604602A1CanadaA1
CA2604624A1CanadaA1
WO2006121557A1World Intellectual Property Organization (WIPO)A1
WO2006122255A1World Intellectual Property Organization (WIPO)A1
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WO2006122259A1World Intellectual Property Organization (WIPO)A1
US2006276544A1United States of AmericaA1
US2006281816A1United States of AmericaA1
WO2006110783A3World Intellectual Property Organization (WIPO)A3
US2007043241A1United States of AmericaA1
US2007066846A1United States of AmericaA1
MX2007000524AMexicoA
MX2007000525AMexicoA
US2007073085A1United States of AmericaA1
EP1768950A2European Patent Office (EPO)A2
KR20070067077ARepublic of KoreaA
IL184974A0IsraelA0
IL185028A0IsraelA0
IL185028D0IsraelD0
IL185031A0IsraelA0
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IL185033A0IsraelA0
US2007287748A1United States of AmericaA1
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KR20070118305ARepublic of KoreaA
KR20070118306ARepublic of KoreaA
BRPI0605833ABrazilA
MX2007012606AMexicoA
MX2007014129AMexicoA
EP1879851A1European Patent Office (EPO)A1
EP1879852A1European Patent Office (EPO)A1
EP1879853A1European Patent Office (EPO)A1
EP1879854A1European Patent Office (EPO)A1
JP2008505980AJapanA
CN101171225AChinaA
CN101171227AChinaA
CN101171228AChinaA
CN101171229AChinaA
CN101300224AChinaA
US7462737B2United States of AmericaB2
US7488846B2United States of AmericaB2
KR20090019016ARepublic of KoreaA
KR100893312B1Republic of KoreaB1
US7619112B2United States of AmericaB2
US7678938B2United States of AmericaB2
US7763749B2United States of AmericaB2
EP1879851B1European Patent Office (EPO)B1
AT486841TAustriaT
ATE486841T1AustriaT1
DE602006017995D1GermanyD1
ES2351882T3SpainT3
EP1879854B1European Patent Office (EPO)B1
AT523484TThis recordAustriaT
ATE523484T1AustriaT1
ES2372700T3SpainT3