butenolides has been established based on Sharpless asymmetric dihydroxylation in high yields and good enantiopurity. The route could be expanded to the synthesis of α,γ-disubstituted butenolide units of naturally occurring annonaceous acetogenins. Utilizing this strategy, three simple natural products with butenolide segments were synthesized enantioselectively.
基于Sharpless不对称二羟基化技术,以高收率和良好的对映体纯度为基础,建立了一种针对γ-甲基
丁烯内酯的新型合成策略。该途径可扩展为合成天然存在的非
丙酮产
乙酸原素的α,γ-二取代
丁烯内酯单元。利用这种策略,对映体选择性合成了三种具有
丁烯内酯链段的简单
天然产物。