Derivatives of clavulanic acid, their preparation and pharmaceutical compositions containing them
申请人:BEECHAM GROUP PLC
公开号:EP0025271A1
公开(公告)日:1981-03-18
Thecompounds of the formula (II):
or pharmaceutically acceptable salts or esters thereof wherein A is a hydrogen atom or an esterifying radical; X is an alkyl group of 1-12 carbon atoms optionally substituted by a hydroxy, amino. acylamino of Ci-6 alkoxy group, which substituents are not on the carbon atom adjacent to the nitrogen atom; or a C5-7 cycloalkyl group; or a phenylalkyl group wherein the carbon atom content of the alkyl part is 1-6 and the phenyl part is optionally substituted with a fluorine, bromine, chloride, Ci-6 alkyl, or C1-6 alkoxy; with the proviso that when X represents an optionally substituted phenylalkyl group and A represents C1-3 alkyl, then the -CO2A group is attached to the alkyl part of the phenyl-alkyl group; have been found to be β-lactamase inhibitors and antibacterial agents. Their preparation and use is described.
式(II)化合物:
或其药学上可接受的盐或酯 其中 A 是氢原子或酯化基;X 是 1-12 个碳原子的烷基,可任选被羟基、氨基、Ci-6 烷氧基的酰氨基取代,这些取代基不在邻近氮原子的碳原子上;或 C5-7 环烷基。或C5-7环烷基;或苯基烷基,其中烷基部分的碳原子含量为1-6,苯基部分任选被氟、溴、氯、Ci-6烷基或C1-6烷氧基取代;但条件是当 X 代表任选取代的苯基烷基且 A 代表 C1-3 烷基时,-CO2A 基团连接到苯基烷基的烷基部分;已发现这些化合物是 β-内酰胺酶抑制剂和抗菌剂。本文介绍了它们的制备和使用方法。