Studies of the Constituents of Astragalus membranaceus BUNGE. III. Structure of Triterpenoidal Glycosides, Huangqiyenins A and B, from the Leaves

Yingli MA; Zhenkun TIAN; Haixue KUANG; Chunsheng YUAN; Chunjie SHAO; Kazuhiro OHTANI; Ryoji KASAI; Osamu TANAKA; Yoshihito OKADA; Toru OKUYAMA

doi:10.1248/cpb.45.359

Yingli MA, Zhenkun TIAN, Haixue KUANG, Chunsheng YUAN, Chunjie SHAO, Kazuhiro OHTANI, Ryoji KASAI, Osamu TANAKA, Yoshihito OKADA, Toru OKUYAMA

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Keywords: Astragalus membranaceus, cycloartane, huangqiyenin A, huangqiyenin B, triterpenoidal saponin

JOURNAL FREE ACCESS

1997 Volume 45 Issue 2 Pages 359-361

DOI https://doi.org/10.1248/cpb.45.359

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Abstract

Two new cycloartane-type triterpenoidal saponins, huangqiyenins A and B, were isolated from the leaves of Astragalus membranaceus BUNGE (Leguminosae) collected in Heilongjiang Province, China, and established as 3-O-β-D-glucopyranosyl-(20R, 24S)-16β, 25-dihydroxy-20, 24-epoxy-9, 19-cyclolanost-6-one and 3-O-β-D-glucopyranosyl-(24S)-16β, 24, 25-trihydroxy-cyclolanost-6-one, respectively, on the basis of chemical and spectral evidence.

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