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Planta Med 1996; 62(6): 577-579
DOI: 10.1055/s-2006-957980
Letters

© Georg Thieme Verlag Stuttgart · New York

A 1H- and 13C-NMR Study of Seven Ajmaline-Type Alkaloids

Reija Jokela, Mauri Lounasmaa
  • Laboratory for Organic and Bioorganic Chemistry, Technical University of Helsinki, FIN-02150 Espoo, Finland
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Publication History

1996

1996

Publication Date:
04 January 2007 (online)

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Abstract

1H- and 13C-NMR spectral data are presented for ajmaline (1), 17-O-acetylajmaline (2), isoajmaline (3), isosandwichine (4), rauflorine (5), vincamajine (6), and vincamedine (7). Some corrections to the previously reported assignments of compound 6 (1H-NMR) and compounds 3, 4 and 7 (13C-NMR) have been made. The 13C-NMR chemical shifts for rauflorine 5 are presented for the first time.