FLAVONOID GLYCOSIDES AND AN ANTHRAQUINONE FROM RUMEX CHALEPENSIS

摘要

Besides rutin, quercetin 3-rhamnoside and kaempferol 3-rhamnosyl(1 --> 6) galactoside, a new flavonol glycoside, quercetin 3-glucosyl(1 --> 4)galactoside, and 1,6,8-trihydroxy-3-methyl anthraquinone (emodin) have been characterized from leaves of Rumex chalepensis. The structures were established on the basis of R(f) values, acid hydrolysis to aglycone and sugar and UV, EI and FAB-mass spectra, (1)HNMR, C-13 DEPT NMR, NOE difference measurement, H-1-H COSY and H-1-C-13 COSY spectral data.