title: New phenolic constituents from the fruit juice of Phyllanthus emblica.
abstract: Six new phenolic constituents, L-malic acid 2-O- (1), mucic acid 2-O- (5), mucic acid 1,4-lactone 2-O- (6), 5-O- (8), 3-O- (10), and 3,5-di-O- (11) gallates, were isolated from the fruit juice of Phyllanthus emblica together with their methyl esters (2-4, 7, 9), and their structures were determined by spectral and chemical methods. Compounds 5, 6, and 8, the major phenolic constituents of the juice, were present as an equilibrium mixture in aqueous solution.
authors.affiliation: Faculty of Pharmaceutical Sciences, Nagasaki University, Japan.
authors.forename: Y J
authors.initials: YJ
authors.lastname: Zhang
authors.forename: T
authors.initials: T
authors.lastname: Tanaka
authors.forename: C R
authors.initials: CR
authors.lastname: Yang
authors.forename: I
authors.initials: I
authors.lastname: Kouno
mesh_terms: D000975:Antioxidants / Q000737:chemistry; D001628:Beverages / Q000032:analysis*; D002681:China; D002855:Chromatography, Thin Layer; D019665:Euphorbiaceae / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry*; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D009904:Optical Rotation; D010636:Phenols / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D000975:Antioxidants; D007202:Indicators and Reagents; D010636:Phenols