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Structural elucidation of four flavonoid glycosides from Barringtonia acutangula
Author(s) -
Van Quach Thi Thanh,
Vien Le Thi,
Hanh Tran Thi Hong,
Huong Phan Thi Thanh,
Van Thanh Nguyen,
Cuong Nguyen Xuan,
Nam Nguyen Hoai,
Van Minh Chau
Publication year - 2018
Publication title -
vietnam journal of chemistry
Language(s) - English
Resource type - Journals
eISSN - 2572-8288
pISSN - 0866-7144
DOI - 10.1002/vjch.201800011
Subject(s) - kaempferol , quercetin , flavonoid , glycoside , chemistry , stereochemistry , methanol , traditional medicine , organic chemistry , medicine , antioxidant
Chromatographic separations of a methanol extract of Barringtonia acutangula leaves resulted in the isolation of four flavonoid glycosides. Using extensive NMR spectroscopic analysis as well as comparison with the reported data, their structures were elucidated as quercetin 3‐ O ‐ β ‐D‐(6‐ p ‐hydroxybenzoyl)galactopyranoside ( 1 ), quercetin 3‐ O ‐ α ‐L‐arabinopyranosyl‐(1→2)‐ β ‐D‐galactopyranoside ( 2 ), kaempferol 3‐ O ‐ β ‐D‐galactopyranoside ( 3 ), and quercetin‐3‐ O ‐ β ‐D‐galactopyranoside ( 4 ).