申请人:——
公开号:US05081271A1
公开(公告)日:1992-01-14
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 --COHN--, --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.
苯甲酸衍生物的化学式(I)表示为:其中R.sub.1代表氢或较低的烷基,R.sub.2和R.sub.4代表氢、三甲基硅基或三甲基锗基,R.sub.3代表氢、较低的烷基、三甲基硅基或三甲基锗基,R.sub.5代表氢、较低的烷基、乙酰基或羟基,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,R.sub.6代表羟基、较低的烷氧基,或具有化学式--NR.sub.7 R.sub.8的基团,其中R.sub.7和R.sub.8代表氢或较低的烷基,X代表具有化学式--COHN--、--NHCO--、--COO--、--OCO--、--COCH.dbd.CH--、--COCH.dbd.C(OH)--或--CH.dbd.CH--的基团,这些化合物作为诱导肿瘤细胞分化的优秀效果,特别是对白血病细胞,或作为治疗银屑病、免疫和炎症性疾病的药物,以及其制备方法。