申请人:PFIZER INC.
公开号:EP0181702A1
公开(公告)日:1986-05-21
@ A series of novel derivatives of penicillanic acid 1,1-dioxide, having a disubstituted methyl group of the formula X-CH-Y at the 6-position, and the pharmaceutically-acceptable salts thereof and the pharmaceutically-acceptable esters thereof readily hydrolyzable in vivo, wherein X is hydroxy, acylated hydroxy or amino and Y is carboxy or esterified carboxy. The compounds of the invention are inhibitors of bacterial beta-lactamases, and they will protect certain beta-lactamase-susceptible beta-lactam antibiotics, e.g. ampicillin, against inactivation by beta-lactamases. Co-administration of a compound of the invention with a beta-lactam antibiotic such as ampicillin to a mammalian subject increases the effectiveness of the beta-lactam antibiotic against infections caused by beta-lactamase-producing bacteria.
一系列青霉烷酸 1,1-二氧化物的新型衍生物,其 6 位上有一个式 X-CH-Y 的二取代甲基,其药学上可接受的盐及其药学上可接受的酯在体内易于水解,其中 X 是羟基、酰化羟基或氨基,Y 是羧基或酯化羧基。本发明的化合物是细菌β-内酰胺酶的抑制剂,它们能保护某些易受β-内酰胺酶影响的β-内酰胺类抗生素(如氨苄西林)不被β-内酰胺酶灭活。哺乳动物在服用本发明化合物和β-内酰胺类抗生素(如氨苄西林)时,可提高β-内酰胺类抗生素对产β-内酰胺酶细菌引起的感染的疗效。