Three new indole alkaloids, 10-methoxy-16-de(methoxycarbonyl)pagicerine (1), (5β)-17-O-deacetyl-5,11-dimethoxyakuammiline (2), and ((16S,19E)-N1-(hydroxymethyl)isositsirikine (3) were isolated from the roots of Rauvolfia yunnanensis, together with seven known alkaloids. The structures of the new compounds were elucidated by in-depth spectroscopic and mass-spectrometric analyses.
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Hu et al. (2006) studied this question.
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