• YAKHAK HOEJI
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• v.33 no.6
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• pp.377-379
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• 1989

The methylated compound of ellagic acid was isolated from Potentilla chinensis (Rosaceae). The isolated compound was 3, 3', 4-tri-O-methylellagic acid, [2, 3, 7-trimethoxy-8-hydroxy[1] benzopyrano-[5, 4, 3, cde][1] benzopyran-5, 10-dione], $C_{17}H_{12}O_8$, m.p. $293-295^{\circ}C$. The isolation of trimethylellagic acid was conducted by the column chromatography and the identification of the compound was carried out by the methods of IR, NMR and MS spectroscopy.

• Natural Product Sciences
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• v.4 no.4
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• pp.263-267
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• 1998

From the dried flower-buds of Syzygium aromaticum Merr. et Perry (Myrtaceae), seven compounds, i.e., eugenol (1), oleanolic acid (2), kaempferol 7-O-metylether (3), 3,3',4-tri-O-methylellagic acid (4), maslinic acid (5), ${\beta}-sitosterol-3-O-glucoside$ (6), and isorhamnetin 3-O-glucoside (7) were isolated. Compound 1 showed cyclooxygenase-2 (COX-2) inhibitory activity.

• YAKHAK HOEJI
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• v.41 no.2
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• pp.149-152
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• 1997

Three compounds were isolated from the n-BuOH fraction of buds of Eugenia caryophyllata and their structures were identified as 3,3',4-tri-O-methylellagic acid, 3-O--${\beta}$ -D-glucopyranosyl-3,5,4'-trihydroxy-7,3'-dimethoxyflavone and gallic acid by chemical and spectral evidence.