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Communication | Regular issue | Vol 14, No. 2, 1980, pp.175-177
Published online, 1st January, 1970
DOI: 10.3987/R-1980-02-0175
Bisaknadinine, a New Dimeric Hasubanan Alkaloid from Stephania sasakii Hayata

Jun-ichi Kunitomo,* Megumi Oshikata, Yoshiko Murakami, and Tetsuro Shingu

*Faculty of Pharmaceutical Science, Mukogawa-Women’s University, 11-68 Koushien Kyuban-Cho, Nishinomiya, Hyogo 663-8179, Japan

Abstract

A new type base, bisaknadinine, was isolated from Stephania Sasakii Hayata, and its structure was decided as (I) from spectral data, especially by the application of nuclear Overhauser effect and internuclear double resonance. The chemical oxidation of aknadinine (II) afforded bisaknadinine (I), thus the absolute configuration of (I), except the steric configuration concerning the mode of biphenyl linkage, was proved.