- Alkaloidal Constituents of Leucojum asetivum L. (Amaryllidaceae)
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Two novel alkaloids, leucotamine (1) and O-methylleucotamine (2), with a 3R-hydroxybutyryl group, and another new alkaloid, 3-O-acetylungiminorine (3), were isolated from leaves of Leucojum asetivum (Amaryllidaceae) together with five known alkaloids.O-Methylleucotamine (2) and 3-O-acetylungiminorine (3), as well as four known bases, were also isolated from bulbs of this plant.The stereochemistries of the new compounds 1, 2, and 3 were established on the basis of chemical and spectral data.Keywords - Leucojum asetivum; Amaryllidaceae; leucotamine; O-methylleucotamine; 3-O-acetylungiminorine; galanthamine; pretazettine; demethylhomolycorine; lycorine
- Kobayashi, Shigeru,Kihara, Masaru,Yuasa, Kazuyoshi,Imakura, Yasuhiro,Shingu, Tetsuro,et al.
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p. 5258 - 5263
(2007/10/02)
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