Substituted 2-phenyl-1-(3,4-dihydroxy-5-nitrophenyl)-1-ethanones, their use in the treatment of some central and peripheral nervous system disorders and pharmaceutical compositions containing them

"COMPOUND, PROCESS TO TREAT A PATIENT AFFECTED BY ANY CENTRAL AND PERIPHERAL NERVOUS SYSTEM DISORDER, PHARMACEUTICAL COMPOSITION, AND USE OF A COMPOUND" New compounds of formula I are described Compounds have potentially valuable pharmaceutical properties in the treatment of some system disorders central and peripheral nerves, where a reduction in catecholamine ma-methylation may be of therapeutic benefit, such as Parkinson's disease and parquinsonian disorders, gastrointestinal disorders, states of edema formation and hypertension.