EP0365364A2 — 2-Azetidinone derivatives

USPTO Abstract

2-Azetizinone derivatives, useful as blood platelet aggregation inhibiting agents, are those of the formula: in which R 1 is a halogen atom a C 1 -C 4 alkyl group, a C 1 -C 4 alkoxy group or an alkoxycarbonyl group in which the alkoxy group is a C 1 -C 4 alkoxy group; R 2 is a group of the formula: (in which R 3 and R 4 are the same or different and each is a hydrogen atom, a C 1 -C 5 alkenyl group, a phenyl group or a benzyl group), a group of the formula: (in which R 5 is a hydrogen atom, a phenyl group substituted by a halogen atom or a C 1 -C 4 alkoxy group, a phenyl group, a C 1 -C 4 alkyl group or a pyridyl group), a group of the formula: (in which R 6 is a hydrogen atom, a Ci-C 4 alkyl group or a benzyl group and R 7 is a hydrogen atom or a C 1 -C 4 alkyl group), a group of the formula: (in which R 8 and R 9 are the same or different and each is a hydrogen atom or C 1 -C 4 alkyl group), a pyrrolidinyl group or a tetrahydroazepinyl group; and n is an integer of from 2 to 10; and salts thereof.