title: Two new compounds from Comastoma pedunlulatum.
abstract: Two new compounds, a xanthonoid and a flavonoid C-glycoside, were isolated from the ethyl acetate extract of the dried herb of Comastoma pedunlulatum. The structures of the new compounds were elucidated, respectively, as 1,8-dihydroxy-3,5-dimethoxyxanthone 1-O-[2-(4'-hydroxy-3',5'-dimethoxy-E-cinnamoyl)]-β-D-xylopyranosyl-(1-6)-β-D-glucopyranoside (1) and 6″-O-acetylisoorientin (2) on the basis of their spectroscopic and physicochemical properties.
authors.affiliation: Division of Experimental Therapeutics, Department of Medicine, Columbia University, New York, NY 10032, USA.
authors.forename: Li
authors.initials: L
authors.lastname: Tang
authors.forename: Xiao-Ming
authors.initials: XM
authors.lastname: Xu
authors.forename: Kirsten Alison
authors.initials: KA
authors.lastname: Rinderspacher
authors.forename: Chen-Qiu
authors.initials: CQ
authors.lastname: Cai
authors.forename: Ying
authors.initials: Y
authors.lastname: Ma
authors.forename: Chun-Lin
authors.initials: CL
authors.lastname: Long
authors.forename: Jin-Chao
authors.initials: JC
authors.lastname: Feng
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D047309:Flavones; D029965:Gentianaceae / Q000737:chemistry; D005960:Glucosides; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D013237:Stereoisomerism; D044004:Xanthones / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: C568231:6''-O-acetylisoorientin; D004365:Drugs, Chinese Herbal; D047309:Flavones; D005960:Glucosides; D006027:Glycosides; D044004:Xanthones; C568230:comastomaside A