申请人:Fujisawa Pharmaceutical Company, Limited
公开号:US04218374A1
公开(公告)日:1980-08-19
A compound of the general formula: ##STR1## wherein R.sup.1 is amino or a conventional, pharmaceutically acceptable acylamino, R.sup.2 is carboxy or a conventionally protected carboxy, X is --S-- or ##STR2## R.sup.3 is lower alkyl and Y" is a residue of a strong nucleophile selected from the group consisting of azido, thiocyanato, lower alkyanoylthio and piperidinothiocarbonylthio.
一种具有一般式的化合物:##STR1##
其中R.sup.1是氨基或传统的、药学上可接受的酰胺基,R.sup.2是羧基或传统保护的羧基,X是--S--或##STR2##
R.sup.3是低碳基,Y"是从偏氮酰基、硫氰酸酯基、低碳酰硫基和哌啶基硫代氨基酰硫基组成的强亲核剩余基。