[Two new flavonoids from the flower of Castanea mollissima Blume].
OBJECTIVE
To study the bioactive constituents from the flower of Castanea mollissima Blume.


METHODS
Compounds were isolated and purified by column chromatography on silica gel and polyamide. Structures were determined by various spectroscopic data,including UV, IR, 1H and 13CNMR, EIMS and FABMS, 1H-13C-COSY and HMBC.


RESULTS
Two compounds were isolated from the ethyl acetate fraction of 95% ethanol extract and the structures were elucidated as kaempferol-3-O-[6"-(E)-p-coumaroyl]-alpha-D-mannopyranoside (1) and kaempferol-3-O-[6", 4"-di-(E)-p-coumaroyl]-alpha-D-mannopyranoside (2).


CONCLUSIONS
Compounds 1 and 2 are new compounds, named castanoside A and B respectirely.
Wang
Si
S
Institute of Materia Medica, Shandong Academy of Medical Science, Jinan 250062, China.
Tang
Wen-zhao
WZ
Ding
Xing-bao
XB
D029962:Fagaceae / Q000737:chemistry*; D035264:Flowers / Q000737:chemistry; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D044949:Kaempferols / Q000737:chemistry / Q000302:isolation & purification*; D008362:Mannosides / Q000737:chemistry / Q000302:isolation & purification*; D008968:Molecular Conformation; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*
D005960:Glucosides; D044949:Kaempferols; D008362:Mannosides; C495714:kaempferol-3-O-(6'',4''-di-p-coumaroyl)mannopyranoside; C495713:kaempferol-3-O-(6''-p-coumaroyl)mannopyranoside