申请人:Sumitomo Chemical Company, Limited
公开号:US04464531A1
公开(公告)日:1984-08-07
There are provided compounds of the formula: ##STR1## wherein either R.sub.1 or R.sub.2 is a hydrogen atom, a hydroxy group, an acyloxy group, a phthalimido group or an acetamido group and the other is a hydrogen atom; either R.sub.3 or R.sub.4 is a hydroxy group or an acyloxy group and the other is a hydrogen atom; either R.sub.5 or R.sub.6 is a hydroxy group or an acyloxy group and the other is a hydrogen atom; either R.sub.7 or R.sub.8 is a hydrogen atom, a methyl group, a hydroxymethyl group, an acyloxymethyl group, an alkoxycarbonyl group, a group of the formula: ##STR2## (wherein X.sub.1 and X.sub.2 are a hydrogen atom or a lower alkyl group), or a carboxyl group and the other is a hydrogen atom; either R.sub.11 or R.sub.12 is a hydrogen atom, a hydroxy group or an acyloxy group and the other is a hydrogen atom; either R.sub.13 or R.sub.14 is a hydroxy group or an acyloxy group and the other is a hydrogen atom; either R.sub.15 or R.sub.16 is a methyl group, a hydroxymethyl group or an acyloxymethyl group and the other is a hydrogen atom; and a process for producing them. These compounds are useful as antitumor agents.
提供的化合物具有以下结构:##STR1## 其中R.sub.1或R.sub.2是氢原子、羟基、酰氧基、邻苯二甲酰亚胺基团或乙酰氨基团之一,另一个是氢原子;R.sub.3或R.sub.4是羟基或酰氧基之一,另一个是氢原子;R.sub.5或R.sub.6是羟基或酰氧基之一,另一个是氢原子;R.sub.7或R.sub.8是氢原子、甲基、羟甲基、酰氧甲基、烷氧羰基、##STR2##(其中X.sub.1和X.sub.2是氢原子或较低的烷基基团)或羧基之一,另一个是氢原子;R.sub.11或R.sub.12是氢原子、羟基或酰氧基之一,另一个是氢原子;R.sub.13或R.sub.14是羟基或酰氧基之一,另一个是氢原子;R.sub.15或R.sub.16是甲基、羟甲基或酰氧甲基之一,另一个是氢原子;以及生产这些化合物的方法。这些化合物可用作抗肿瘤剂。