Synthesis of Galanthamine Analogs as Acetylcholinesterase Inhibitors via Intramolecular Heck Cyclization
作者:Pi-Hui Liang、Ling-Wei Hsin、Sung-Ling Pong、Chia-Huei Hsu、Chen-Yu Cheng
DOI:10.1002/jccs.200300071
日期:2003.6
A novel approach towards the construction of the galanthamine skeleton was demonstrated by the Pd-catalyzed cyclization of N-[2-(1,4-dioxa-spiro[4,5]dec-7-en-8-yl)-ethyl]-2-iodo-4-methoxy-N-methyl-benzamide (23), with formation of the benzazepine ring and creation of a quaternary carbon.
N-[2-(1,4-dioxa-spiro[4,5]dec-7-en-8-yl)-ethyl] 的 Pd 催化环化证明了一种构建加兰他敏骨架的新方法-2-iodo-4-methoxy-N-methyl-benzamide (23),形成苯并氮杂环并产生季碳。