title: Four New Triterpenoids from Callicarpa kwangtungensis.
abstract: Four new triterpenoids which were identifed as 2α,3β,6β,19α-tetrahydroxy- oleanolic acid 28-O-β-D-glucopyranoside (1), 2-O-β-D-glucopyranosyloxy-3α,19α-di-hydroxyoleanolic acid (2), 2-O-β-D-glucopyranosyloxy-3α,19α-dihydroxyursolic acid (3), 2α,3α,6β,19α-tetrahydroxyursolic acid 28-O-β-D-glucopyranoside (4), were isolated from the aerial parts of Callicarpa kwangtungensis together with three known triterpenoids identified as 2α,3β,21β-trihydroxyursolic acid 28-O-β-D-glucopyranoside (5), 2α,3α,19α,23-tetrahydroxyoleanolic acid 28-O-β-D-glucopyranoside (6), 2α,3α,19α,23-tetrahydroxyursolic acid 28-O-β-D-glucopyranoside (7). Their structures were elucidated by the combination of mass spectrometry (MS), one and two-dimensional NMR experiments.
authors.affiliation: Jiangxi Provincial Institute for Drug and Food Control, Nanchang 330029, China. 13870868633@139.com.
authors.forename: Guo-Ping
authors.initials: GP
authors.lastname: Zhou
authors.affiliation: Jiangxi Provincial Institute for Drug and Food Control, Nanchang 330029, China. 15070029890@163.com.|Pharmaceutical Department of Nanchang University, Nanchang 330006, China. 15070029890@163.com.
authors.forename: Yan
authors.initials: Y
authors.lastname: Yu
authors.affiliation: Jiangxi Provincial Institute for Drug and Food Control, Nanchang 330029, China. 13426688499@163.com.|Pharmaceutical Department of Nanchang University, Nanchang 330006, China. 13426688499@163.com.
authors.forename: Ming-Ming
authors.initials: MM
authors.lastname: Yuan
authors.affiliation: State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China. jitf@imm.ac.cn.
authors.forename: Tengfei
authors.initials: T
authors.lastname: Ji
authors.affiliation: Jiangxi Provincial Institute for Drug and Food Control, Nanchang 330029, China. fhzfhz620@sohu.com.
authors.forename: Hui-Zheng
authors.initials: HZ
authors.lastname: Fu
authors.affiliation: Jiangxi Provincial Institute for Drug and Food Control, Nanchang 330029, China. jxfdc_zrj@126.com.
authors.forename: Rui-Jian
authors.initials: RJ
authors.lastname: Zhong
mesh_terms: D032408:Callicarpa / Q000737:chemistry*; D002681:China; D008279:Magnetic Resonance Imaging; D013058:Mass Spectrometry; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification*
chemical_list: D014315:Triterpenes
keywords: Callicarpa kwangtungensis; MS; NMR; Verbenaceae; triterpenoids