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New humantenine-type alkaloids from Gelsemium elegans
1Program for Collaborative Research in the Pharmaceutical Sciences, College of Pharmacy, University of Illinois, Chicago 60612.
Journal of Natural Products
|May 1, 1989
Abstract:
The alkaloid extract of the whole plant of Gelsemium elegans has afforded four new alkaloids: N-desmethoxyrankinidine [1], 11-hydroxrankinidine [3], 11-hydroxyhuman-humantenine [4] and humantenirine [6]. The structures of 5 was established through X-ray crystallographic analysis, and the structures of the other three new alkaloids were deduced by spectral analysis (1H, 13C, APT, 2D-COSY and 2D-HETCOR).