申请人:Beecham Group Limited
公开号:US04428961A1
公开(公告)日:1984-01-31
The present invention provides a compound of formula (I): ##STR1## wherein R.sup.1 is a group such that COOR.sup.1 is a carboxyic acid group or a salt or ester thereof; R.sup.3 is hydrogen or an organic radical; n is zero or 1; R.sup.4 and R.sup.5 are independently hydrogen or C.sub.1 -C.sub.3 alkyl; X is C.sub.1 -C.sub.6 alkylene optionally substituted by hydroxy or a carboxylic acid group or a salt or ester thereof; Y is an amino, or substituted amino, wherein the substituent is carboxylic acyl, C.sub.1 -C.sub.6 alkyl or a group .dbd.C(R.sup.14)NR.sup.15 R.sup.16 wherein R.sup.15 and or C.sub.1 -C.sub.6 alkyl and R.sup.14 is hydrogen or C.sub.1 -C.sub.6 alkyl, or a group --NR.sup.A R.sup.B wherein R.sup.A and R.sup.B are independently hydrogen or C.sub.1 -C.sub.6 alkyl.
本发明提供了一种化合物,其化学式为(I):##STR1## 其中R.sup.1是一种基团,使得COOR.sup.1是一个羧酸基团或其盐或酯;R.sup.3是氢或有机基团;n为零或1;R.sup.4和R.sup.5分别是氢或C.sub.1-C.sub.3烷基;X是C.sub.1-C.sub.6烷基,可选地被羟基或羧酸基或其盐或酯取代;Y是氨基或取代氨基,其中取代基是羧酸酰基,C.sub.1-C.sub.6烷基或一个.group .dbd.C(R.sup.14)NR.sup.15 R.sup.16,其中R.sup.15和/或C.sub.1-C.sub.6烷基和R.sup.14是氢或C.sub.1-C.sub.6烷基,或一个.group --NR.sup.A R.sup.B,其中R.sup.A和R.sup.B分别是氢或C.sub.1-C.sub.6烷基。