perhydropyrrolo[2,1-j]quinoline or perhydropyrido[2,1-j]quinoline framework, were synthesized starting from the B ring of the tricyclic system. This approach includes a highly stereocontrolled diallylation of a cyclic enaminoester and subsequent ring-closing metathesis to construct the A/B ring system, which was transformed into key lactams 32 and 33, and amino alcohol 37. Thus, we achieved formal syntheses
从
三环系统的B环开始合成具有独特的全氢
吡咯并[2,1- j ]
喹啉或全氢
吡啶并[2,1- j ]
喹啉骨架的海洋
三环生物碱lepadiformine和fasicularin 。该方法包括对环状烯胺酯进行高度立体控制的
二烯丙基化,以及随后的闭环复分解以构建A / B环系统,该系统被转化为关键的内酰胺32和33以及
氨基醇37。因此,我们以不同的方式实现了(-)-lepadiformines A,C和(-)-fasicularin的形式合成。