[Chemical Constituents from Camellia oleifera Stem].
Түлхүүр үгс
Хураангуй
OBJECTIVE
To study the chemical constituents of stem of Camellia oleifera.
METHODS
The chemical constituents were isolated and purified by column chromatography on silica gel, ODS, Sephadex LH-20 and MPLC. Their structures were elucidated on the basis of physicochemical properties and special analysis.
RESULTS
Seven compounds were isolated from the stem of Camellia oleifera, whose structures were elucidated as (-) -pinoresinol (1), (-) -medioresinol (2), skullcapflavone II (3), betulinic acid (4), ursolic acid (5), 3-O-β-D-glucopyranosyl- (1 --> 2) -β-D-xylopyransoyl-(1 --> 3) -[β-D-glucopyranosyl- (1 --> 2)] -β-D-glucuronopyranosyl-22α-angeloyloxyolean-12-ene-15α,16α,28-triol (6) and oleanolic acid (7).
CONCLUSIONS
Compounds 1 - 6 are isolated from this plant for the first time, and compounds 1 - 3 are isolated from this genus for the first time.
