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Paper | Regular issue | Vol 32, No. 6, 1991, pp.1109-1116
Published online, 1st January, 1970
DOI: 10.3987/COM-91-5670
Synthesis of the Alkaloids (±)-Deplancheine and Flavopereirine

Parasuraman Jai Sankar, Sankar K. Das, and Venkatachalam S. Giri*

*Indian Institute of Chemical Biology, Calcutta-700 032, India


Desulfurization of 3-acetyl-1,2,6,7,12,12b-hexahydroindolo[2,3-a]quinolizine-2-ethylene thioketal (6) followed by NaBH4 reduction afforded (±)-deplancheine (1) whereas NaBH3 CN reduction followed by dehydration, desulfurization and DDQ oxidation yielded flavopereirine (2).