作者:Pierre-Yves Michellys、Philippe Maurin、Loïc Toupet、Hélène Pellissier、Maurice Santelli
DOI:10.1021/jo001106f
日期:2001.1.1
(BISTRO) 1 to succinic anhydride led to spirolactone 2 [(+/-)-6,9-divinyl-1-oxaspiro[4.4]nonan-2-one]. Methoxycarbonylation followed by stereoselective alkylation by various benzocyclobutenes afforded the substituted benzocyclobutene steroid precursors 5. Thermolysis of 5 gave rise to steroids (+/-)-6 with a trans-anti-cis configuration in five steps and in a highly stereoselective manner. Modifications
路易斯酸介导向琥珀酸酐中添加1,8-双(三甲基甲硅烷基)辛基-2,6-二烯(BISTRO)1导致螺内酯2 [(+/-)-6,9-二乙烯基-1-氧杂螺[4.4] nonan-2-one]。甲氧羰基化,然后通过各种苯并环丁烯进行立体选择性烷基化,得到取代的苯并环丁烯类固醇前体5。5的热分解以五个步骤和高度立体选择性的方式生成了具有反式-反式构型的类固醇(+/-)-6。序列的修饰允许制备具有反-反-反构型的类固醇(+/-)-11。