94356-31-7Relevant academic research and scientific papers
Studies on Rhubarb (Rhei Rhizoma). VI. Isolation and Characterization of Stilbenes
Kashiwada, Yoshiki,Nonaka, Gen-ichiro,Nishioka, Itsuo
, p. 3501 - 3517 (2007/10/02)
Nineteen stilbene derivatives (I-XIX), of which five are novel cis-stilbenes, have been obtained from a rhubarb of low quality (commercial name:, Imo-Daio).Based on chemical and spectroscopic evidence, these compounds have been characterized as rhapontigenin (I), rhaponticin (II), rhapontigenin 3'-O-β-D-glucopyranoside (III), rhaponticin 6''-O-gallate (IV), rhaponticin 2''-O-gallate (V), rhaponticin 2''-O-p-coumarate (VI), piceatannol (VII), piceatannol 3-O-β-D-glucopyranoside (VIII), piceatannol 3'-O-β-D-glucopyranoside (IX), piceatannol 3'-O-β-D-xylopyranoside (X), piceatannol 3-O-β-D-(6''-O-galloyl) glucopyranoside (XI), desoxyrhaponticin (XII), desoxyrhaponticin 6''-O-gallate (XIII), 3,4',5-trihydroxystilbene 4'-O-β-D-(6''-O-galloyl) glucopyranoside (XIV), cis-3,3',5-trihydroxy-4'-methoxystilbene 3-O-β-D-glucopyranoside (XV), cis-3,3',5-trihydroxy-4'-methoxystilbene 3-O-β-D-(6''-O-galloyl) glucopyranoside (XVI), cis-3,5-dihydroxy-4'-methoxystilbene 3-O-β-D-glucopyranoside (XVII), cis-3,3',5-trihydroxy-4'-methoxystilbene 3-O-β-D-(2''-O-galloyl) glucopyranoside (XVIII) and cis-3,3',5-trihydroxy-4'-methoxystilbene (XIX).Keywords - rhubarb; Polygonaceae; trans-stilbene; cis-stilbene; gallic acid ester; p-coumaric acid ester; rhaponticin; desoxyrhaponticin; piceatannol; 3,4',5-trihydroxystilbene
