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Paper | Regular issue | Vol 31, No. 10, 1990, pp.1889-1894
Published online, 1st January, 1970
DOI: 10.3987/COM-90-5546
Demethylation of Norditerpenoid Alkaloids

Xihui Liang, Haridutt K. Desai, Balawant S. Joshi, and S. William Pelletier

*School of Chemical Sciences, Institute for Natural Products Research, The University of Georgia, Chemistry Building, Athens, Georgia 30602-2556, U.S.A.


The reaction of the aconitine-type alkaloids delphinine and delphisine, and the lycoctonine-type alkaloids delsoline, ajacine, and deltaline has been carried out with HBr-AcOH in glacial acetic acid. These reactions proceed by parial demethylation and acetylation of the hydroxyl groups formed during the demethylation.