作者:Joseph P. Michael、David Gravestock
DOI:10.1002/(sici)1099-0690(199805)1998:5<865::aid-ejoc865>3.0.co;2-3
日期:1998.5
The synthesis of the racemic title alkaloid 1 has been accomplished in eight steps and 7.2% overall yield from pyrrolidine-2-thione (5) and ethyl hex-2-enoate (6). Key steps include a ring closure that takes advantage of the nucleophilicity of a vinylogous urethane 8, and stereoselective reduction of the C=C double bond of a bicyclic vinylogous amide 12.
外消旋标题生物碱 1 的合成分 8 步完成,总产率为 7.2%,由 pyrrolidine-2-thione (5) 和 hex-2-enoate (6) 合成。关键步骤包括利用乙烯基氨基甲酸酯 8 的亲核性的闭环,以及双环乙烯基酰胺 12 的 C=C 双键的立体选择性还原。