栲树叶多酚类成分的研究(Ⅰ)

Polyphenols from the leaves of Castanopsis fargesii(Ⅰ)

目的研究栲Castanopsis fargesii Franch.树叶的多酚类成分。方法应用MCI、Sephadex LH-20、ODS C18和Diaion HP20SS柱对栲树叶80%乙醇提取物进行分离纯化,根据波谱数据鉴定所得化合物结构。结果从中分离得到10个化合物,分别鉴定为莽草酸(1)、原儿茶酸(2)、咖啡酸(3)、没食子酸(4)、没食子酸甲酯(5)、没食子酸乙酯(6)、5-O-galloylquinic acid(7)、5-O-caffeoylquinic acid(8)、5-O-galloyl-(-)-shikimic acid(9)、5-O-galloylhamamelose(10)。结论除化合物2、9外,其余均为首次从该植物中分离得到。

AIM To study the polyphenols from leaves of Castanopsis fargesii Franch.. METHODS The80% ethanol extract of leaves of C. fargesii was isolated and purified by MCI,Sephadex LH-20,ODS C18 and Diaion HP20 SS column,then the structures of obtained compounds were identified on the basis of spectral data. RESULTS Ten compounds were isolated and identified as shikimic acid（ 1）,3,4-dihydroxybenzoic acid（ 2）,caffeic acid（ 3）,gallic acid（ 4）,methyl gallate（ 5）,ethyl gallate（ 6）,5-O-galloylquinic acid（ 7）,5-O-caffeoylquinic acid（ 8）,5-O-galloyl-（-）-shikimic acid（ 9）,5-O-galloylhamamelose（ 10）. CONCLUSION Except for compounds 2 and 9,all the compounds are isolated from this plant for the first time.