reaction of 3-isoprenyl-2,4-dimethoxyquinoline epoxides with potassium hydroxide in aqueous dimethyl sulphoxide furnished 2,2-dimethylpyranoquinolines in high yield, and led to a new synthesis of the alkaloid flindersine. A mechanistic study resulted in the isolation of an allylic alcohol intermediate and the detection of a second allylic alcohol, and indicated that quinone methides were involved in the
3-异
戊烯基-2,4-二甲氧基
喹啉环氧化物与
氢氧化钾在
二甲基亚砜水溶液中的反应以高收率提供了2,2-二甲基
吡喃
喹啉,并导致了
生物碱氟代新碱的新合成。机理研究导致分离出烯丙基醇中间体并检测到第二种烯丙基醇,并表明醌甲基化物参与环化步骤。讨论了芬达丝素和相关化合物的
生物发生。