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).
No takes yet. Share an insight, caveat, or question.
Yamagishi et al. (1987) studied this question.