FLAVONOIDS OF THE EPIGEAL PART OF Rhodiola rosea. II. STRUCTURES OF NEW GLYCOSIDES OF HERBACETIN AND OF GOSSYPETIN

Article abstract of DOI:10.1007/BF00579139

The structure of four new flavonol glycosides isolated from the epigeal part of Rhodiola rosea have been established: 7-O-α-L-rhamnopyranosylgossypetin (rhodiolgin), 8-O-β-D-glucopyranosyl-7-O-α-L-rhamnopyranosylgossypetin (rhodiolgidin), 8-O-β-D-glucopyranosyl-7-O-α-L-rhamnopyranosylherbacetin (rhodionidin), and 3-O-β-D-glucopyranosyl-8-O-β-D-xylopyranosylherbacetin (rhodalidin).The properties of the previously undescribed incomplete methyl ethers of herbacetin and gossypetin obtained during the structural analysis of the glycosides have been studied.It has been found that diazomenthane methylates the 5-OH groups in the diglycosides investigated.