A short synthesis of the hexahydropyrido[4,3-b]carbazole core structure for the synthesis of aspidosperma alkaloids

摘要

A short synthesis of the hexahydropyrido[4,3-b]carbazole derivative 8 which is important for the preparation of aspidosperma alkaloids was described. Construction of the tetracyclic structure was achieved via a short synthetic route and some new carbazolone derivatives (4, 5, 6 and 7) were synthesized.