ABSTRACT
AIM To study the chemical constituents from the leaves of Castanopsis fordii Hance.METHODS The 80％ ethanol extract from C.fordii leaves was isolated and purified by Sephadex LH-20,MCI,silica and semi-preparative column,then the structures of obtained compounds were identified by spectral data.RESULTS Nine compounds were isolated and identified as quercetin (1),quercetin 3-O-α-L-rhamnopyranoside (2),myricetin 3-rhamnoside (3),myricetin-3-O-(2"-O-galloyl)-α-rhamnopyranoside (4),quercetin 3-O-(2"-O-galloyl)-α-rhamnopyranoside (5),kaempferol-3-O-glucorhamnoside (6),3,5,7,3',5'-pentahydroxy-(2R,3R)-flavanonol 3-O-α-L-rhamnopyranoside (7),astilbin (8),isastilbin (9).CONCLUSION Compounds 2,3 are isolated from this plant for the first time,compounds 1,4-9 are first obatined from genus Castanopsis.
ABSTRACT
AIM To study the chemical constituents from the leaves of Castanopsis fordii Hance.METHODS The 80％ ethanol extract from C.fordii leaves was isolated and purified by Sephadex LH-20,MCI,silica and semi-preparative column,then the structures of obtained compounds were identified by spectral data.RESULTS Nine compounds were isolated and identified as quercetin (1),quercetin 3-O-α-L-rhamnopyranoside (2),myricetin 3-rhamnoside (3),myricetin-3-O-(2"-O-galloyl)-α-rhamnopyranoside (4),quercetin 3-O-(2"-O-galloyl)-α-rhamnopyranoside (5),kaempferol-3-O-glucorhamnoside (6),3,5,7,3',5'-pentahydroxy-(2R,3R)-flavanonol 3-O-α-L-rhamnopyranoside (7),astilbin (8),isastilbin (9).CONCLUSION Compounds 2,3 are isolated from this plant for the first time,compounds 1,4-9 are first obatined from genus Castanopsis.