作者:Qi-Ying Hu、Pankaj D. Rege、E. J. Corey
DOI:10.1021/ja048808x
日期:2004.5.1
Highly enantioselective and very short syntheses of the bioactive forms of estrone (3) and desogestrel (4) are described using a chiral oxazaborolidinium catalyst (2) in the key initial step. Enantiomerically pure estrone was synthesized in eight steps from the readily available starting materials diene 5 and alpha,beta-enal 6 via intermediates 8 and 9. Desogestrel was synthesized using a similar strategy
在关键的初始步骤中使用手性 oxazaborolidinium 催化剂 (2) 描述了雌酮 (3) 和去氧孕烯 (4) 的生物活性形式的高度对映选择性和非常短的合成。对映异构纯雌酮是从容易获得的起始材料二烯 5 和 α,β-烯醛 6 经中间体 8 和 9 合成的,分八步合成。使用类似的策略从二烯 5 和 α,β-烯醛 11 经中间体 12-合成去氧孕烯17. 还介绍了手性催化剂 2 及其对映异构体的有效合成。