title: Two new constituents from Rheum sublanceolatum.
abstract: The chemical investigation of Rheum sublanceolatum has led to the isolation of two new constituents, the structures of which were identified on the basis of physical and spectroscopic analysis as 2-acetyl-3-methyl-6,8-dihydroxy-2,3,4,4-tetrahydronaphthalene-1-one-6-O-beta-D-glucopyranoside (1) and 2,5-dimethyl-7-hydroxychromone-7-O-beta-D-(6'-O-galloyl)-glucopyranoside (2).
authors.affiliation: Department of Biological Sciences and Biotechnology, Tsinghua University, Beijing 100084, China. xianglan02@mail.tsinghua.edu.cn
authors.forename: Lan
authors.initials: L
authors.lastname: Xiang
authors.forename: Xue-Hui
authors.initials: XH
authors.lastname: Liu
authors.forename: Guo-Qiang
authors.initials: GQ
authors.lastname: Fan
authors.forename: Yu-Xin
authors.initials: YX
authors.lastname: Cui
authors.forename: Li-Jun
authors.initials: LJ
authors.lastname: Du
authors.forename: Jun-Hua
authors.initials: JH
authors.lastname: Zheng
mesh_terms: D002867:Chromones / Q000737:chemistry* / Q000302:isolation & purification*; D005960:Glucosides / Q000737:chemistry* / Q000302:isolation & purification*; D009281:Naphthalenes / Q000737:chemistry* / Q000302:isolation & purification*; D012250:Rheum / Q000737:chemistry*; D013057:Spectrum Analysis
chemical_list: C504837:2,5-dimethyl-7-hydroxychromone-7-O-beta-D-(6'-O-galloyl)-glucopyranoside; C504836:2-acetyl-3-methyl-6,8-dihydroxy-2,3,4,4-tetrahydronaphthalene-1-one-6-O-beta-D-glucopyranoside; D002867:Chromones; D005960:Glucosides; D009281:Naphthalenes