TIRUMALIN, A NEW PRENYLATED DIHYDROFLAVONOL FROM RHYNCHOSIA CYANOSPERMA

Article abstract of DOI:10.1016/0031-9422(80)83210-9

A new dihydroflavonol has been isolated together with the known flavonol-O-glycosides, rutin and kaempferol-3-rutinoside, and (+)-pinitol from the leaves of R. cyanosperma Benth.The dihydroflavonol was identified as (+)-(2R, 3R)-8-C-prenyltaxifolin-7,4'-dimethyl ether on the basis of spectroscopic studies and the compound given the trivial name tirumalin.Key Word Index - Rhynchosia cyanosperma; Leguminosae; prenylated dihydroflavonol; tirumalin; flavonol-O-glycosides; rutin; kaempferol-3-rutinoside; pinitol.