NMR investigation of alkaloids. III.13C NMR spectra and reconsideration of the stereochemistry of herbamine and herbadine

descriptionPublicationkeyboard_double_arrow_right Article 01 Nov 1982 English Publisher:Springer Science and Business Media LLCJournal:Chemistry of Natural Compounds, volume 18, pages 693-696 (issn: 0009-3130, eissn: 1573-8388,

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Authors: M. R. Yagudaev;

doi: 10.1007/bf00579425

NMR investigation of alkaloids. III.13C NMR spectra and reconsideration of the stereochemistry of herbamine and herbadine

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Abstract

The stereochemistry previously proposed for herbamine (V) and herbadine (II) as C2-βH has been reconsidered on the basis of a comparative study of the13C NMR of these compounds and of vincamajine, quebrachidine, ajmaline, vincamajoreine, and majoridine, and it has been established unambiguously that herbamine and herbadine belong to the dihydroindole alkaloids with C2-αH, herbamine being C3-hydroxyvincamajine, and herbadine C6-hydroxyquebrachidine.

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