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- W4377084743 abstract "The chemical composition of plant polyphenols Plantago major L. and Plantago lanceolata L. growing in Uzbekistan was studied. More than 20 compounds, including 7 flavonoids, 9 phenolic acids, and 8 hydrolysable tannins, the ages of which have been determined using physicochemical methods of research have been isolated from plants. From P. major L., along with well-known phenolic compounds, such as gallic acid, rutin, luteolin, isorhamnetin, hyperoside, quercetin, substances belonging to the class of tannins – 1,2,3,4,6-penta-O-galloyl-β-D-glucopyranose, 1,2,3-tri-O-galloyl-β-D-glucopyranose, 1,3,4,6-tetra-O-galloyl-β-D-glucopyranose and 2 new hydrolysable tannins were isolated – hexahydroxydiphenoyl diester-1-(O-2-O-galloyl-β-D-glucopyranoside)-1-(O-β-D-xylopyranoside), hexahydroxydiphenoyl-1-(O-β-D-glucopyranoside) diester)-2-(O-4-O-halloyl-β-D-glucopyranoside).
 From the aerial part of the P. lanceolata L. plant, along with known polyphenols such as gallic acid, quercetin-3-rutinoside, quercetin-3-O-β-D-galactopyranoside, kaempferol, quercetin, rhamnetin, 4 hydrolysable tannins were isolated for the first time: 3-O-galloyl-4,6-hexahydroxydi-phenoyl-β-D-glucopyranose, 2,3-di-O-galloyl-β-D-glucopyranose, 1,2,3-tri-O-galloyl-β-D-glucopyranose, 2-O-bis-digalloyl-4,6-valoneyl-β-D-glucose. Based on the results of chemical (acid and stepwise hydrolysis) and physical (UV-, IR-, 1H, 13C NMR spectroscopy) research methods, it was proved that the diester of hexahydroxydiphenoyl-1-(O-2-O-galloyl-β-D-glucopyranoside)-1-(O-β-D-xylopyranoside), diester hexahydroxydiphenoyl-1-(O-β-D-glucopyranoside)-2-(O-4-O-galloyl-β-D-glucopyranoside) (P. major L.) and 2-O-bis-digalloyl-4,6-valoneyl-β-D-glucose (P. lanceolata L.) are new hydrolysable tannins not described in the literature previously." @default.
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- W4377084743 date "2023-03-13" @default.
- W4377084743 modified "2023-10-18" @default.
- W4377084743 title "POLYPHENOLIC COMPOUNDS FROM PLANTAGO MAJOR L. AND PLANTAGO LANCEOLATA" @default.
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- W4377084743 doi "https://doi.org/10.14258/jcprm.20230111523" @default.
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