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  • Title: Two new benzophenone glycosides from the fruit of Psidium guajava L.
    Author: Shu J, Chou G, Wang Z.
    Journal: Fitoterapia; 2010 Sep; 81(6):532-5. PubMed ID: 20080158.
    Abstract:
    The ripe edible fruits of Psidium guajava L. was phytochemically investigated, three benzophenone glycosides, 2, 6-dihydroxy-3, 5-dimethyl-4-O-beta-D-glucopyranosyl-benzophenone (1), 2, 6-dihydroxy-3-methyl-4-O-(6''-O-galloyl-beta-D-glucopyranosyl)-benzophenone (2), 2, 6-dihydroxy-3, 5-dimethyl-4-O-(6''-O-galloyl-beta-D-glucopyranosyl)-benzophenone (3) were isolated by means of chromatography, and their structures were elucidated on the basis of mass spectrometry, (1)H NMR, (13)C NMR, HSQC and HMBC data. Compounds 1 and 2 were new benzophenone glycosides, and here we report the complete spectroscopic assignments for 3.
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