Beta-lactam antibiotics, their preparation and their use in pharmaceutical compositions
申请人:BEECHAM GROUP PLC
公开号:EP0028497A1
公开(公告)日:1981-05-13
The present invention provides the compounds of the formula (II):
and pharmaceutically acceptable salts and esters thereof wherein R3 is a hydrogen atom, a group HO3S- or a group R5CO wherein R5 is C1-6 alkyl, C2-6 alkenyl, aryl, aryl(C1-6)alkyl or aryloxy(C1-6) alkyl; and R4 is an organic group other than methyl bonded to the -CO-NH-moiety via a carbon atom; with the proviso that when R3 is a hydrogen atom or a group R5CO the stereochemical configuration at the a-carbon atom of the C-6 substituent is S, and with the further proviso that when R' is a group HO2S- the hydrogen atoms at C-5 and C-6 are cis. Their use is described as are processes for their preparation. Compounds wherein the R'CO-moiety is replaced by a hydrogen atom are also prepared.
本发明提供了式(II)化合物:
及其药学上可接受的盐和酯 其中 R3 是氢原子、基团 HO3S- 或基团 R5CO,其中 R5 是 C1-6 烷基、C2-6 烯基、芳基、芳基(C1-6)烷基或芳氧基(C1-6)烷基;以及 R4 是通过一个碳原子与-CO-NH-分子键合的除甲基以外的有机基团;但条件是,当 R3 是氢原子或基团 R5CO 时,C-6 取代基 a 碳原子上的立体化学构型为 S,而且当 R' 是基团 HO2S- 时,C-5 和 C-6 上的氢原子为顺式。本文介绍了这些化合物的用途及其制备工艺。还制备了 R'CO 原子被氢原子取代的化合物。