Enantioselective Spirocyclopropanation of <i>para</i>-Quinone Methides Using Ammonium Ylides
作者:Lukas Roiser、Mario Waser
DOI:10.1021/acs.orglett.7b00869
日期:2017.5.5
The use of Cinchona alkaloid-based chiral ammonium ylides allows for the first highly enantioselective and broadly applicable spirocyclopropanation reactions of para-quinone methides. This strategy provides a straightforward protocol toward the chiral spiro[2.5]octa-4,7-dien-6-one skeleton, which is a frequently found structural motif in important biologically active molecules.
使用基于金鸡纳生物碱的手性铵叶立德允许对-醌甲基化物的第一个高度对映选择性和广泛适用的螺环丙烷化反应。该策略为手性螺[2.5]octa-4,7-dien-6-one 骨架提供了一个简单的方案,这是重要的生物活性分子中经常发现的结构基序。