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

Chemical and Pharmaceutical Bulletin
2011.0

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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