节点文献
孕甾三醇的区域选择性乙酰化/溴代反应的研究
Studies on the Regioselectivity of Acetylation-bromination in Pregnanetriol
【摘要】 为合理利用剑麻皂甙元资源,系统地考察了孕甾-3S,16S,20S-三醇和溴化氢/乙酸溶液的反应,并且发现了孕甾-3S,16S,20S-三醇的区域选择性乙酰化溴代反应,从而为转化孕甾-3S,16S,20S-三醇成为16R-溴代孕甾-3S,20S-二醇二乙酸酯提供了一个有效方法.
【Abstract】 In order to make rational utilization of tigogenin, the reaction of pregnane-3S,16S,20S-triol and HBr/HOAc was explored in detail, and a regioselective acetylation-bromination reaction of preg- nane-3S,16S,20S-triol was found during this exploration. Based on this regioselective acetyla- tion-bromination, pregnane-3S,16S,20S-triol can be easily transformed into 16R-bromopregnane-3S,20S-diol diacetate in good yield.
【关键词】 剑麻皂甙元;
孕甾-3S,16S,20S-三醇;
乙酰化溴代反应;
【Key words】 tigogenin; pregnane-3S,16S,20S-triol; acetylation-bromination;
【Key words】 tigogenin; pregnane-3S,16S,20S-triol; acetylation-bromination;
【基金】 国家自然科学基金(Nos.29372077,20472052)资助项目.
- 【文献出处】 化学学报 ,Acta Chimica Sinica , 编辑部邮箱 ,2006年12期
- 【分类号】O621.25
- 【被引频次】12
- 【下载频次】331