PHYTO-CHEMICAL CONSTITUENTS FROM STEM OF TARAXACUM OFFICINALE WEBER

摘要

A new flavone glycoside 1 m. p. 223-225oC, m. f. C₃₄H₄₂O₂₀, [M+] 770 (FABMS) has been isolated from the stems of Taraxacum Officinal weber along with one known compound Taxifolin. A compound 1 was characterized as 6, 4′-dimethoxy-5, 7-dihydroxy-flavone- 7 – O – a – L-rhamnopyranosyl-(1?4) – O – β – D xylopyranosyl-(1?4)-O-β-D-glucopyranoside by various chemical degradations and spectral analysis.