Intermolecular 1,4-addition of a functionalized vinyl lithium reagent to a readily accessible Michael acceptor enabled the synthesis of six mavacuran alkaloids with a highly strained pentacyclic cagelike framework. The chemo- and diastereoselectivity of the reaction were rationalized by DFT calculations. Dihydroxylation and pinacol rearrangement of the indole nucleus completed the first total syntheses
将功能化的
乙烯基锂试剂分子间 1,4-加成到容易获得的迈克尔受体上,可以合成六种具有高应变五环笼状框架的 mavacuran
生物碱。通过 DFT 计算使反应的
化学选择性和非对映选择性合理化。
吲哚核的二羟基化和
频哪醇重排完成了C-丙
氟居林和C-
氟居林的首次全合成。