TWO POLYPHENOL GLUCOSIDES AND TANNINS FROM ROSA CYMOSA

Article abstract of DOI:10.1016/0031-9422(93)85250-U

Two new polyphenol glucosides, rocymosins A and B, were isolated from Rosa cymosa and characterized as 3-O-(6'-O-galloyl)-β-D-glucopyranosyl-4-hydroxyphenethyl alcohol and 2'-O-β-D-glucopyranosyl-4,4',β-trihydroxy-dihydrochalcone, respectively.Eight known tannins, casuarinin, rugosin D, stenophyllanins A and B, (+)-catechin, procyanidin B-3, procyanidin B-3 3-O-gallate and catechin-(4α->6)-catechin-(4α->6)-epicatechin, were also isolated. Key Word Index - Rosa cymosa; Rosaceae; root; tannin; procyanidin; 3-O-(6'-O-galloyl)-β-D-glucopyranosyl-4-hydroxyphenethyl alcohol; rocymosin A; β-hydroxydihydrochalcone glucoside; rocymosin B.