申请人:——
公开号:US05155249A1
公开(公告)日:1992-10-13
Benzoic acid derivatives represented by the formula (I): ##STR1## wherein R.sub.1 represents hydrogen or lower-alkyl, R.sub.2 and R.sub.4 represent hydrogen, trimethylsilyl, or trimethylgermyl, R.sub.3 represents hydrogen, lower-alkyl, trimethylsilyl, or trimethylgermyl, R.sub.5 represents hydrogen, lower-alkyl, acetyl, or hydroxy, at least one of R.sub.2 and R.sub.3 being trimethylsilyl or trimethylgermyl, and R.sub.6 means hydroxy, lower-alkoxy, or a group of the formula --NR.sub.7 R.sub.8, wherein R.sub.7 and R.sub.8 mean hydrogen or lower-alkyl, and X represents a group of the formula --CONH--, --NHCO--, --COO--, --OCO--, --COCH.dbd.CH--, --COCH.dbd.C(OH)--, or --CH.dbd.CH--, which exhibit excellent effect as differentiation-inducing agents for neoplastic cells, especially leukemia cells, or a therapeutic agent for psoriasis or immune and inflammatory diseases, and a process for the preparation thereof, are disclosed.
公开了一种由化学式(I)表示的苯甲酸衍生物:##STR1## 其中R.sub.1表示氢或低烷基,R.sub.2和R.sub.4表示氢,三甲基硅基或三甲基锗基,R.sub.3表示氢,低烷基,三甲基硅基或三甲基锗基,R.sub.5表示氢,低烷基,乙酰基或羟基,其中R.sub.2和R.sub.3中至少有一个是三甲基硅基或三甲基锗基,而R.sub.6表示羟基,低烷氧基或化学式--NR.sub.7 R.sub.8的基团,其中R.sub.7和R.sub.8表示氢或低烷基,X表示化学式--CONH--,--NHCO--,--COO--,--OCO--,--COCH.dbd.CH--,--COCH.dbd.C(OH)--或--CH.dbd.CH--的基团。这些化合物在癌变细胞,特别是白血病细胞的分化诱导剂,或银屑病或免疫和炎症性疾病的治疗剂方面具有出色的效果,并公开了一种制备它们的方法。