Sterols as Anticancer Agents: Synthesis of Ring-B Oxygenated Steroids, Cytotoxic Profile, and Comprehensive SAR Analysis
作者:João F. S. Carvalho、M. Manuel Cruz Silva、João N. Moreira、Sérgio Simões、M. Luisa Sá e Melo
DOI:10.1021/jm1007769
日期:2010.11.11
The cytotoxicity of oxysterols was systematically studied in tumor and normal cells. Synthetic strategies to prepare this library included oxidations at ring B and a new method to yield 6 beta-hemiphthalates directly from Delta(5)-steroids. Most oxysterols were cytotoxic and showed selectivity toward cancer cells, LAMA-84 cells (leukemia) being particularly sensitive to 4, 8, 22, and 27 (IC50 < 5.6 mu M). The structural requirements to induce selective toxicity are discussed to shed light on the development of new anticancer drugs.
Process for the preparation of cholesterol derivatives
申请人:The Green Cross Corporation
公开号:US04304726A1
公开(公告)日:1981-12-08
New organic dibasic acid half esters of 7-ketocholesterol and of 7-hydroxycholesterol represented by the general formula ##STR1## (wherein R.sub.1 is .dbd.O or --OH and R.sub.2 is a C.sub.1 -C.sub.5 alkylene group or a phenylene group) and physiologically acceptable salts thereof. These compounds are effective as an immunosuppressive or an anti-inflammatory agent.