A new approach to the synthesis of pentacyclic indole derivatives related to alkaloids
作者:Anthony H. Jackson、Patrick V.R. Shannon、David J. Wilkins
DOI:10.1016/s0040-4039(00)96656-5
日期:1987.1
N-Indolylethyl-2-pyridones bearing appropriate β-dicarbonyl substituents in the 3-position have been cyclised to pentacyclic indoles via spirocyclic indolenines by catalysis with trifluoroacetic anhydride.