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Communication | Special issue | Vol 15, No. 2, 1981, pp.791-796
Published online, 1st January, 1970
DOI: 10.3987/S-1981-02-0791
Steroid Alkaloids of Fresh Bulbs of Fritillaria thunbergii Mig.and of Crude Drug “Bai-Mo” Prepared Therefrom

Junichi Kitajima, Naoki Noda, Yoshiteru Ida, Kazumoto Miyahara, and Toshio Kawasaki*

*Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan


A new minor alkaloid FR-5 was isolated, besides verticine (I) and verticinone (II), from the fresh bulbs of Fritillaria thunbergii Miq., and the structure was determined as III. The crude drug “Bai-mo”, which was prepared from the above bulbs by treatment with lime followed by bleaching in the sun, provided two alkaloids F-3 and -4, together with I and II, in the free state, and additional two F-5 and -6 in the form of their acetates. They were assigned the structures VIII, IX, X and XI, which correspond, respectively, to an oxidation product of I, II and III.