[Studies on the chemical constituents from the branches and leaves of Cupressus duolouxiana].
OBJECTIVE
To investigate the chemical constituents from the branches and leaves of Cupressus duolouxiana native to China in order to obtain a more comprehensive understanding of its effective components.


METHODS
Compounds were isolated and purified by silica gel column chromatography. They were identified and structurally elucidated by spectral analysis.


RESULTS
Six compounds were isolated from the ethanolic extracts of Cupressus duolouxiana, which were identified as (7S,8S)-3-methoxy-3',7-epoxy-8,4'-oxy-neoligna-4,9,9'-triol (I), kaempferol (II), quercetin (III), juglanin (IV), quercetin-3'-methoxy-3-O-alpha-L-arabinofuranoside (V) and avicularin (VI).


CONCLUSIONS
All compounds are obtained from this plant for the first time.
Xu
Jian-Feng
JF
College of Food Science, Shanghai Fisheries University, Shanghai 210093, China. jfxu@shfu.edu.cn
Tan
Ning-Hua
NH
D002681:China; D029781:Cupressus / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification; D044949:Kaempferols / Q000737:chemistry / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D018515:Plant Leaves / Q000737:chemistry*; D018547:Plant Stems / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D011794:Quercetin / Q000737:chemistry / Q000302:isolation & purification
D005419:Flavonoids; D044949:Kaempferols; C041388:avicularin; D011794:Quercetin