[Studies on flavonoids from stems and leaves of Calophyllum inophyllum].
OBJECTIVE
To study the chemical constituents from the stems and leaves of Calophyllum inophyllum.


METHODS
The compounds were isolated by column chromatography on silica gel, Sephadex LH-20 and preparative TLC. Their structures were elucidated by chemical methods and NMR, MS spectroscopic data.


RESULTS
Nine compounds were identified as 2-hydroxyxanthone (1), 4-hydroxyxanthone (2), 1, 5-dihydroxyxanthone (3), 1, 7-dihydroxyxanthone (4), 1, 3, 5-trihydroxy-2-methoxyxanthone (5), 6-deoxyjacareubin (6), amentoflavone (7), kaempferol-3-O-alpha-L-rhamnoside (8) and quercetin-3-O-alpha-L-rhamnoside (9).


CONCLUSIONS
Compounds 8 and 9 were isolated from the genus Calophyllum and compounds 1, 2, 4-6 were isolated from this plant for the first time.
Li
Yan-zhi
YZ
School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China.
Li
Zhan-lin
ZL
Hua
Hui-ming
HM
Li
Zheng-gang
ZG
Liu
Ming-sheng
MS
D029759:Calophyllum / Q000737:chemistry*; D002845:Chromatography / Q000379:methods; D005419:Flavonoids / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D006027:Glycosides / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D044949:Kaempferols / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D013058:Mass Spectrometry / Q000379:methods; D018515:Plant Leaves / Q000737:chemistry*; D018547:Plant Stems / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry; D011714:Pyrans / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D011794:Quercetin / Q000031:analogs & derivatives / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D014966:Xanthenes / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification
C438127:5,10-dihydroxy-2,2-dimethylpyrano(3,2-b)xanthen-6(2H)-one; D005419:Flavonoids; D006027:Glycosides; D044949:Kaempferols; D011714:Pyrans; D014966:Xanthenes; C470066:kaempferol 3-O-rhamnoside; C012526:quercitrin; D011794:Quercetin