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Paper | Regular issue | Vol 26, No. 10, 1987, pp.2623-2637
Published online, 1st January, 1970
DOI: 10.3987/R-1987-10-2623
Studies on Aconitum Species V. Constituents of Aconitum yesoense var. macroyesoense (Nakai) Tamura

Hideo Bando, Koji Wada, Takashi Amiya, Kimiko Kobayashi, Yasuo Fujimoto, and Toshio Sakurai

*Hokkaido College of Pharmacy, 7-1 Katsuraoka-cho, Otaru 047-02, Japan

Abstract

Five new C20-diterpenoid alkaloids, 12-acetyldehydro-Iucidusculine, 12-acetyllucidusculine. 15-benzoylpseudokobusine,15-veratroylpseudokobusine, and yesoxine and 14 known alkaloids were isolated from A. yesoense var. macroyesoense (Nakai) Tamura. Structures of those compounds were determined on the basis of their spectral and chemical data. Structure of an unusual epoxide, yesoxine, was determined by X-ray analysis and was a first example having an epoxy group at C(16 and 17).