Medicinal Plants of Thailand. I Structures of Rheedeiosides A—D and cis-Entadamide A β-<small>D</small>-Glucopyranoside from the Seed Kernels of Entada rheedei

Sachiko Sugimoto; Katsuyoshi Matsunami; Hideaki Otsuka

doi:10.1248/cpb.59.466

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Medicinal Plants of Thailand. I Structures of Rheedeiosides A—D and cis-Entadamide A β-D-Glucopyranoside from the Seed Kernels of Entada rheedei

Sachiko Sugimoto, Katsuyoshi Matsunami, Hideaki Otsuka

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Keywords: Entada rheedei, Fabaceae, rheedeioside, entadamide, Thai medicinal plant

JOURNAL FREE ACCESS

2011 Volume 59 Issue 4 Pages 466-471

DOI https://doi.org/10.1248/cpb.59.466

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Abstract

Four new oleanane-type triterpene oligoglycosides, named rheedeiosides A, B, C and D, and one new thioamide glycoside, cis-entadamide A β-D-glucopyranoside, were isolated from the seed kernels of a Thai medicinal plant, Entada rheedei SPRENGEL. The rheedeiosides were found to contain N-acetylglucosamine as a sugar component. Their structures were elucidated based on spectral and chemical evidence.

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