In a study of the anthraderivatives in roots of Rheum emodi, three new anthrone C-glucosides, named 10-hydroxycascaroside C (1), 10-hydroxycascaroside D (2) and 10R-chrysaloin 1-O-β-D-glucopyranoside (3) were isolated besides the rare compounds cascaroside C (4), cascaroside D (5) and cassialoin (6). Additionally the investigation resulted in the isolation of an acetylated chrysophanol glucoside, 8-O-β-D-(6′-O-acetyl)glucopyranosyl- chrysophanol (7). The structures were established by comprehensive spectroscopic investigations. © 2004 Pharmaceutical Society of Japan.
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Krenn, L., Pradhan, R., Presser, A., Reznicek, G., & Kopp, B. (2004). Anthrone C-glucosides from Rheum emodi. Chemical and Pharmaceutical Bulletin, 52(4), 391–393. https://doi.org/10.1248/cpb.52.391