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Tannins of rosaceous medicinal plants. Part 2. Gemins A, B, and C, new dimeric ellagitannins from Geum japonicum
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1985
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Geum JaponicumBiochemistryBotanyMedicineNatural SciencesTanninGlycobiologyPlant BiochemistryPhytopharmacologyPhytochemicalNew Dimeric EllagitanninsPharmacologyDehydrodigalloyl GroupPhytochemistryPlant PhysiologyBiomolecular EngineeringRosaceous Medicinal Plantsβ-Glucose Cores
Three novel dimeric hydrolysable tannins, gemins A, B, and C, have been isolated from the leaves of Geum japonicum(Thunb.) and their structures, which have α- and β-glucose cores linking through a dehydrodigalloyl group, have been elucidated from spectral and chemical evidence