申请人:Beecham p.l.c.
公开号:US05166198A1
公开(公告)日:1992-11-24
A compound of formula (I), or a pharmaceutically acceptable salt thereof: ##STR1## wherein R.sub.1 is hydroxy or amino; R.sub.2 is hydrogen or amino; R.sub.3 is hydrogen, hydroxymethyl or acyloxymethyl; R.sub.4 is hydrogen or (when R.sub.3 =H and Z is a bond or CH.sub.2) hydroxy, acyloxy, hydroxymethyl or acyloxymethyl; Z is a bond, or a group CHR.sub.8 wherein R.sub.8 is hydrogen, or (when R.sub.3 =R.sub.4 =H), R.sub.8 is hydroxy, acyloxy, hydroxymethyl or acyloxymethyl; R.sub.5 is a group of formula: ##STR2## wherein R.sub.6 and R.sub.7 are independently selected from hydrogen, C.sub.1-6 alkyl and optionally substituted phenyl.
化合物的化学式(I),或其药学上可接受的盐:其中R₁为羟基或氨基;R₂为氢或氨基;R₃为氢、羟甲基或醋酰氧甲基;R₄为氢或(当R₃=H且Z为键或CH₂时)羟基、醋酰氧基、羟甲基或醋酰氧甲基;Z为键,或基团CHR₈,其中R₈为氢,或(当R₃=R₄=H时),R₈为羟基、醋酰氧基、羟甲基或醋酰氧甲基;R₅为下列基团:其中R₆和R₇分别选自氢、C₁-₆烷基和可选择取代的苯基。