著者

Ritsuo NISHIDA Chul-Sa KIM Hiroshi FUKAMI Ryozo IRIE

出版者

Japan Society for Bioscience, Biotechnology, and Agrochemistry

雑誌

Agricultural and Biological Chemistry (ISSN:00021369)

巻号頁・発行日

vol.55, no.7, pp.1787-1792, 1991 (Released:2006-04-05)

参考文献数

14

被引用文献数

19

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Two new pyrrolizidine alkaloids, ideamines A and B, together with other analogs (lycopsamine and parsonsine) were isolated in the N-oxide forms from adult bodies of the Apocynaceae-feeding danaine butterfly, Idea leuconoe. Ideamine A was characterized as a homolog of lycopsamine, in which the viridifloric acid moiety was replaced by a 2-ethyl-2, 3-dihydroxybutanoic moiety. Likewise, ideamine B was identified as a nor-derivative of parsonsine, in which the trachelanthic acid moiety was replaced by a 2-ethyl-2, 3-dihydroxybutanoic moiety diastereomeric to the necic acid from ideamine A.