申请人:Fujisawa Pharmaceutical Company, Limited
公开号:US04203897A1
公开(公告)日:1980-05-20
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.
一种通式为##STR1##的化合物,其中R.sup.1是氨基或常规的、药学上可接受的酰胺基,R.sup.2是羧基或常规保护的羧基,X是--S--或##STR2##,R.sup.3是较低的烷基,Y"是从选自偏氮、硫氰酸酯、较低的酰硫基和哌啶基硫氨酰硫的强亲核剩余物的群中选择的。