Structure Identification: |
Journal of Chinese Pharmaceutical Sciences,2010, 19(4):256-9. | Phenolic glucopyranosides from the Chinese mangrove plant Excoecaria agallocha L[Reference: WebLink] | METHODS AND RESULTS:
Chemical examination of a Chinese mangrove plant Excoecaria agallocha L.led to the isolations of a new glucoside named l-(3,5-dimethoxy-4-hydroxybenzyl)-6-O-galloyl-l-O-β-D-glucopyranoside(1),together with 10 known glycosides including 3,5-dimethoxy-4-hydroxybenzyl-l-O-β-D-glucopyranoside(2),hydrangeifolin I(3),(2-methoxy-5-hydroxymethyl-phenyl) -l-O-β-D-(6-Ogalloyl) glucopyranoside(4),(3,5-dimethoxy-4-hydroxyphenyl)-l-O-β-D-(6-O-galloyl) glucopyranoside (5),3-methoxy-4-hydroxyphenyl l-O-β-D-(6-O-galloyl) glucopyranoside(6),3,4,5-trimethoxyphenyl-(6-O-galloyl)-O-β-D-glucopyranoside (7),koaburaside(8),Koaburaside monomethyl ether(9),cuneatasides D(10),and(?)-isosyringin(11).Their structures were determined through the extensive spectroscopic analysis and comparison with the reported data in literature.
CONCLUSIONS:
Compounds 2-6,8-11 were isolated from the genus Excoecaria for the first time. |
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