title: A novel flavanone from Ilex hainanensis Merr.
abstract: Chemical investigation of the leaves of Ilex hainanensis Merr. yielded a new flavanone named Huazhongilexone-7-O-beta-D-glucopyranoside, together with five known compounds, which included caffeic acid, quercetin, isoquercitrin, quercitrin-7-O-beta-D-glucopyranoside and rutin. All of the compounds were isolated from the plant for the first time. The structure of the new compound was determined on the basis of high resolution mass, 1D and 2D NMR spectroscopies including ROESY. The antioxidant activity of the new compound was assessed using the DPPH spectrophotometric and IC(50) value was 10.39 micromol L(-1).
authors.affiliation: Key Laboratory of Modern Chinese Medicines (China Pharmaceutical University), Ministry of Education, Nanjing, People's Republic of China.
authors.forename: Xiao-Qing
authors.initials: XQ
authors.lastname: Chen
authors.forename: Ke
authors.initials: K
authors.lastname: Zan
authors.forename: Jie
authors.initials: J
authors.lastname: Yang
authors.forename: Mao-Xiang
authors.initials: MX
authors.lastname: Lai
authors.forename: Qiang
authors.initials: Q
authors.lastname: Wang
mesh_terms: D044950:Flavanones / Q000737:chemistry*; D047309:Flavones / Q000737:chemistry*; D005960:Glucosides / Q000737:chemistry*; D030017:Ilex / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry
chemical_list: D044950:Flavanones; D047309:Flavones; D005960:Glucosides; C540883:huazhongilexone-7-O-glucopyranoside