作者:Nesimi Uludag、Mustafa Sanda、Oktay Asutay、Necdet Coskun
DOI:10.1080/00304948.2014.963458
日期:2014.11.2
The remarkable structural diversity of indole alkaloids as well as their significant biological activity have attracted much interest from synthetic organic chemists,1 providing inspiration and impetus for the development of novel synthetic strategies. Compounds such as dasycarpidone and 20-deethyl-4-demethyldasycapidone possess the tetracyclic ring system of the Strychnos indole alkaloids2,3 and one
吲哚生物碱显着的结构多样性及其显着的生物活性引起了合成有机化学家的极大兴趣,1 为开发新型合成策略提供了灵感和动力。诸如 dasycarpidone 和 20-deethyl-4-demethyldasycapidone 等化合物具有马钱子吲哚生物碱 2,3 的四环系统,其中一种生物碱 20-deethyldasycarpidone (8) 具有很大的药学价值。之前已经报道了 8 的几种全合成。 4,5 构建 20-deethyldasycarpidone (8),6 (±)isodasycarpidone,7 dasycarpidone8 和 20-deethyl-4-demethyldasycarpidone9,10 的所有路线都以 2-氰基开始-1,2,3,6-四氢吡啶 9 或涉及吲哚镁溴化物与 3-乙基异烟酸甲酯 N-氧化物的反应。 11 偶氮基 [4, 3-b] 吲哚基序也被发现是其他马钱子属、生物碱(如