作者:Bin Wang、Hua Qin、Fengying Zhang、Yanxing Jia
DOI:10.1016/j.tetlet.2014.01.063
日期:2014.2
Synthesis of the pivotal cycloheptannelated indole fragment of indole alkaloid dragmacidin E is achieved. The synthesis features a Pd-catalyzed indole synthesis reaction for the preparation of 3,7-disubstituted indole, a regioselective intramolecular Friedel–Crafts reaction for the construction of the 3,4-bridged cycloheptannelated indole skeleton, and a coupling reaction of vinyl triflate with diorganocuprate
合成了吲哚生物碱drammacidin E的关键环庚基化吲哚片段。该合成具有Pd催化的吲哚合成反应(用于制备3,7-二取代的吲哚),区域选择性分子内Friedel-Crafts反应(用于构建3,4-桥联的环庚烯化的吲哚骨架)以及三氟甲磺酸乙烯酯与双有机酸盐。