PHENOLIC GLYCOSIDES FROM DISEASED ROOTS OF REHMANNIA GLUTINOSA VAR. PURPUREA

Article abstract of DOI:10.1016/S0031-9422(00)82331-6

A new caffeoyl glycoside was isolated from the methanolic extract of the diseased root of Rehmannia glutinosa together with acteoside.The structure of the new phenol glycoside was elucidated as 3,4-dihydroxy-β-phenethyl-O-α-L-rhamnopyranosyl-(1 -> 3)-O-β-D-galactopyranosyl-(1 -> 6)-4-O-caffeoyl-β-D-glucopyranoside by spectral and chemical evidence.These compounds were detected as stress compounds in the roots of Rehmannia glutinosa following microbial infection.They inhibited the growth of the two Pseudomonas species. - Key Word Index: Rehmannia glutinosa; Scrophulariaceae; caffeoyl glycoside of 3,4-dihydroxyphenethyl alcohol; stress compound; antimicrobial activity.