申请人:BEECHAM GROUP PLC
公开号:EP0008885A1
公开(公告)日:1980-03-19
The present invention relates to the preparation of compounds of the formula:-
wherein CO2R1 is a free, salted or esterified carboxyl group, n is 0 or 1, and R2 is hydrogen or an acyl group or a group of the sub-formula (a):-
wherein R3 is a salting ion or a methyl or ethyl group, with the proviso that when R2 is a group of the formula (a), the compound hascis stereochemistry aboutthe β-lactam ring; which have been found to possess antibacterial and β-lactamase inhibitory activity.
本发明涉及式如下化合物的制备
其中 CO2R1 是游离的、盐析的或酯化的羧基,n 是 0 或 1,R2 是氢或酰基或子式(a)的基团:- R3 是盐析离子或甲基或乙基。
其中 R3 是盐离子或甲基或乙基,但当 R2 是式 (a) 的基团时,该化合物具有关于 β-内酰胺环的顺式立体化学结构;该化合物已被发现具有抗菌和抑制 β-内酰胺酶的活性。