Sinapic acid esters from Polygala virgata - Bashir, A.; Hamburger, M.; Msonthi, J.D.; Hostettmann, K. (Elsevier)
Three sinapoyl glycosides have been isolated from the roots of Polygala virgata. The structures were established on the basis of UV, mass, ^1H and ^1^3C NMR spectral data, including homonuclear and heteronuclear 2D shift correlation and selective INEPT experiments. α-d-(3-O-Sinapoyl)fructofuranosyl-α-d-(3-O-acetyl-6-O-sinapoyl)glucopyrano side and β-d-(3-O-sinapoyl) fructofuranosyl-α-d-(4-O-acetyl-6-O-sinapoyl)glucopyranoside are new natural products, whereas β-d-(3-O-sinapoyl) fructofuranosyl-α-d-(6-O-sinapoyl)glucopyranoside has already been reported from other plants.
http://linkinghub.elsevier.com/retrieve/pii/S0031-9422(00)95164-1
Keywords: W; V