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Các hợp chất flavonoid glycoside phân lập từ hoa cây Trà hoa vàng Camellia chrysantha
Author(s) -
Vân Nguyễn Thị Hồng,
Ính Cầm Thị,
Bách Phạm Cao,
Tuyến Trần Thị,
Thanh Nguyễn Thị,
Quỳnh Nguyễn Hương,
Long Phạm Quốc
Publication year - 2018
Publication title -
vietnam journal of chemistry
Language(s) - English
Resource type - Journals
eISSN - 2572-8288
pISSN - 0866-7144
DOI - 10.15625/vjc.2018-0029
Subject(s) - glycoside , chemistry , flavonoid , traditional medicine , stereochemistry , medicine , organic chemistry , antioxidant
Camellia chrysantha (the golden camellia, golden tea) is a species of evergreen shrub or small tree belonging to the family Theaceae. The flowers and the leaves of this plant are used as tea and drank for its health benefits. The aim of this study was to investigate the chemical constituents of the flowers of Camellia chrysantha . Five flavonoid glycosides were isolated from the ethyl acetate and the water‐soluble fractions of the flowers of Camellia chrysantha , including vitexin ( 1 ), quercetin‐3‐O‐ β ‐D‐glucopyranoside ( 2 ), quercetin‐7‐O‐ β ‐D‐glucopyranoside ( 3 ), quercetin‐3'‐O‐ β ‐D‐glucopyranoside ( 4 ) and quercetin‐3‐O‐rutinose ( 5 ). Their chemical structures were elucidated by spectroscopic data analysis and by comparison with those reported in the literature. Among five compounds, compounds 2 , 4 and 5 were isolated for the first time from this species.