Title: Two New Compounds from the Roots of Rheum palmatum
Abstract: Abstract Aim To study the constituents of Rheum palmatum . Methods Chromatographic separations of silica gel and polyamide were used. All the structures were elucidated on the basis of chemical and spectroscopic analysis. Results Nine compounds were isolated and their structure were identified as 2, 5-dimethyl-6, 8-dihydroxy-chromone ( 1 ), 1-methyl-2, 8-dihydroxy- 3-carboxy −9, 10-anthraquinone ( 2 ), citreorosein (3) , 4-(4-hydroxyphenyl)-2-butanone ( 4 ), 4-(4-hydroxyphenyl)-2-butanone-4′- O -β-D- (2″-galloyl-6″- O-p -coumaroyl)-glucopyranoside ( 5 ), trans -3, 5, 4′-trihydroxystilbene-4′- O -β-D-(6″-galloyl)-glucopyranoside (6) , 4-(4- hydroxyphenyl)-2-butanone-4′- O -β-D-(6″- O -cinnamoyl)-glucopyranoside (7) , 4-(4-hydroxyphenyl)-2-butanone-4′- O -β-D-(6″-O- p -coumaroyl)-glucopyranoside (8) , trans -3, 5, 4′-trihydroxystilbene-4′- O -β-D-glucopyranoside (9) . Conclusion Compounds 1 and 2 were newly isolated from Rheum palmatum .
Publication Year: 2011
Publication Date: 2011-11-01
Language: en
Type: article
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Cited By Count: 3
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