New laxative constituents of rhubarb. Isolation and characterization of rheinosides A, B, C and D.
作者:TAKASHI YAMAGISHI、MAKOTO NISHIZAWA、MITSUHIKO IKURA、KUNIO HIKICHI、GEN-ICHIRO NONAKA、ITSUO NISHIOKA
DOI:10.1248/cpb.35.3132
日期:——
Four new laxative constituents, rheinosides A, B, C and D, were isolated from commercial rhubarb (Rhei Rhizoma). On the basis of high-resolution nuclear magnetic resonance spectral data and chemical correlation with rhein, the structures were characterized as stereoisomers of 8-O-β-D-glucosyl-10-hydroxy-10-C-β-D-glucosyl rhein-9-anthrone (rheinosides A and B), and 8-O-β-D-glucosyl-10-C-β-D-glucosyl rhein-9-anthrone (rheinosides C and D).
从商业大黄 (Rhei Rhizoma) 中分离出了四种新的泻药成分,分别为 rhein 甙 A、B、C 和 D。根据高分辨率核磁共振光谱数据和与大黄素的化学相关性,结构被鉴定为 8-O-β-D-葡萄糖苷-10-羟基-10-C-β-D-葡萄糖苷大黄素-9-蒽 (rhein 甙 A 和 B) 以及 8-O-β-D-葡萄糖苷-10-C-β-D-葡萄糖苷大黄素-9-蒽 (rhein 甙 C 和 D)。