申请人:Bristol-Myers Company
公开号:US04708955A1
公开(公告)日:1987-11-24
This invention provides novel cephalosporanic acids and esters thereof having the general formula ##STR1## wherein R.sup.2 is hydrogen, lower alkyl, lower alkenyl, lower alkynyl, cyclo(lower)alkyl or acyl, R.sup.3 is hydrogen, lower alkyl, lower alkoxy, lower alkanoyloxy, and R.sup.4 is hydrogen, pivaloyloxymethyl, acetoxymethyl, 1-acetoxyethyl, 5-methyl-2-oxo-1, 3-dioxolen-4-ylmethyl or 4-glycyloxybenzoyloxymethyl. These compounds, especially esters, are useful as broad spectrum antibiotics in the treatment and prevention of infectious diseases of mammals, and for other purposes known in the art.
本发明提供了具有通式##STR1##的新型头孢菌酸及其酯,其中R.sup.2是氢、低级烷基、低级烯基、低级炔基、环(低级)烷基或酰基,R.sup.3是氢、低级烷基、低级烷氧基、低级烷酰氧基,R.sup.4是氢、戊酰氧基甲基、乙酰氧基甲基、1-乙酰氧基乙基、5-甲基-2-氧代-1,3-二氧杂环己烷-4-基甲基或4-甘氨酰氧基苯甲酰氧基甲基。这些化合物,尤其是酯,作为广谱抗生素,在治疗和预防哺乳动物的传染病以及其他已知用途方面是有用的。