(-)-Camoensidine N-Oxide; A New Alkaloid from Maackia tashiroi

Shigeru OHMIYA; Hajime KUBO; Yuuichi NAKAAZE; Kazuki SAITO; Isamu MURAKOSHI; Hirotaka OTOMASU

doi:10.1248/cpb.39.1123

Shigeru OHMIYA, Hajime KUBO, Yuuichi NAKAAZE, Kazuki SAITO, Isamu MURAKOSHI, Hirotaka OTOMASU

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Keywords: Maackia tashiroi, Leguminosae, lupin alkaloid, quinolizidine alkaloid, quinolizidine-indolizidine alkaloid, (-)-camoensidine, (-)-camoensidine N-oxide, (-)-cytisine, (+)-epilupinine, tashiromine

JOURNAL FREE ACCESS

1991 Volume 39 Issue 5 Pages 1123-1125

DOI https://doi.org/10.1248/cpb.39.1123

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Abstract

A new alkaloid (3) was isolated from the stems of Maackia tashiroi (Leguminosae), together with (-)-camoensidine, tashiromine, ammodendrine and six known lupin (quinolizidine) alkaloids. The structure of 3 was characterized as the N₁₅-oxide of (-)-camoensidine, possessing an indolizidine-quinolizidine ring system, by a combination of spectroscopic and chemical methods.

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