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Flavonol glycosides from Phoebe poilanei Kosterm
Author(s) -
Viet Thanh Nguyen Thi,
Thu Hien Dinh Thi,
Minh Tran Thi,
Nhiem Nguyen Xuan,
Yen Pham Hai,
Van Kiem Phan
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.201800075
Subject(s) - kaempferol , chemistry , glycoside , stereochemistry , traditional medicine , botany , quercetin , biology , organic chemistry , medicine , antioxidant
Six flavonol glycosides, kaempferol 3‐ O ‐[ β ‐D‐xylopyranosyl‐(1 → 6)‐ β ‐D‐glucopyranoside] ( 1 ), kaempferol 3‐ O ‐ β ‐D‐glucopyranoside ( 2 ), kaempferol 3‐ O ‐[ α ‐L‐rhamnopyranosyl‐(1 → 2)‐ β ‐D‐glucopyranoside] ( 3 ), kaempferol 3‐ O ‐[ α ‐L‐rhamnopyranosyl‐(1 → 6)‐ β ‐D‐glucopyranoside] ( 4 ), kaempferol 3‐ O ‐[ α ‐L‐rhamnopyranosyl‐(1 → 6)‐ β ‐D‐galactopyranoside] ( 5 ), and rhamnocitrin 3‐ O ‐α‐L‐rhamnopyranosyl‐(1 → 6)‐[α‐L‐rhamnopyranosyl‐(1 → 2)]‐β‐D‐galactopyranoside (oxytroflavoside G) ( 6 ) were isolated from the leaves of Phoebe poilanei Kosterm. Their chemical structures were elucidated by analyses of their ESI‐MS, NMR spectral data, and comparison with those reported in the literature. This is the first report of 13 C‐NMR data of compound 1 .