Two strategies based respectively on the free-radical carbo- and sulfonyl-cyanation of cyclopropenes and cyclobutenes were developed to achieve the total enantioselective synthesis of (+)-eucophylline, a monoterpene alkaloid isolated from Leuconotis eugenifolius.
开发了两种策略,分别基于环
丙烯和
环丁烯的自由基碳和磺酰
氰化,以实现 (+)-eucophylline 的全对映选择性合成,这是一种从Leuconotis eugenifolius中分离的单萜
生物碱。