作者:Claire Bru、Catherine Guillou
DOI:10.1016/j.tet.2006.07.005
日期:2006.9
Cyclizations of a bicyclic amine via an intramolecular Heck reaction followed by an oxidation reaction generated a tetracyclic spirocyclohexadione. From this useful intermediate, different crinine alkaloids such as crinine, buphanisine, flexinine, and augustine could be synthesized. Dienol/benzene or dienone/phenol rearrangement of this tetracyclic spirodienone afforded apogalanthamine analogs.
通过分子内的Heck反应,然后通过氧化反应,使双环胺环化,生成四环螺环己二酮。从这种有用的中间体中,可以合成不同的克林宁生物碱,例如克林宁,布芬尼辛,福西宁和奥古斯丁。该四环螺二烯酮的二烯酚/苯或二烯酮/苯酚重排提供了阿朴加兰他敏类似物。