Phenolic compounds from the leaves of Cyclocarya paliurus (Batal.) Ijinskaja and their inhibitory activity against PTP1B
作者:Juan Zhang、Qiang Shen、Jin-Cai Lu、Jing-Ya Li、Wen-Yong Liu、Jian-Jun Yang、Jia Li、Kai Xiao
DOI:10.1016/j.foodchem.2009.09.031
日期:2010.4
Phenolic compounds were separated from the leaves of Cyclocarya paliurus (Batal.) Ijinskaja and their bioactivities were evaluated through an in vitro PTP1B inhibitory assay. Bioassay-guided fractionation of the ethanol extract has resulted in the isolation of a naphthoquinone derivative, (1R, 2R, 4R)-1,2,4-trihydroxy-1,2,3,4-tetrahydro-naphthalene-1-O-β-d-glucopyranoside, named cyclonoside A, and
从Cyclocarya paliurus(Batal。)Ijinskaja的叶子中分离出酚类化合物,并通过体外PTP1B抑制试验评估其生物活性。乙醇提取物的生物测定指导分馏已分离出萘醌衍生物(1 R,2 R,4 R)-1,2,4-三羟基-1,2,3,4-四氢萘-1 -O- β - d-吡喃葡萄糖苷,称为环己糖苷A和内酯,(4 R,5 S,6 R)-8,9,10-三羟基-4- [3',4'-二羟基苯基] -1, 6-dioxaspiro [4,5] decan-2-one,称为环螺内酯,以及10种已知的酚类化合物:槲皮素-3-O-α - d-葡糖醛酸,槲皮素3-O- β - d-葡糖醛酸,杨桃素-3-O- β - d-葡糖醛酸,1-咖啡酰基奎宁酸,3-咖啡酰基奎宁酸,4-咖啡酰基奎宁酸,5-咖啡酰基奎宁酸,咖啡酸,5-羟基萘-1、4-二-O- β - d-吡喃葡糖苷和哌啶。这些化合物的结构是通过包括大量2D