title: 6,8-Di-C-glycosyl flavonoids from Dendrobium huoshanense.
abstract: Dendrobium huoshanense is a valued herbal plant used in traditional Chinese medicine. Fractionation of the water-soluble part of D. huoshanense by repeated chromatography culminated in the isolation of four new 6,8-di-C-glycosyl flavones (1-4), in addition to seven known compounds, comprising malic acid, dimethyl malate, N-phenylacetamide, isopentyl butyrate, salicylic acid, shikimic acid, and isoschaftoside. By detailed spectroscopic analysis, the structures of 1-4 were determined to have a core of apigenin bearing pentoside (arabinoside or xyloside) and rhamnosyl-hexoside (glucoside or galactoside) substituents.
authors.affiliation: The Genomics Research Center, Academia Sinica, Taipei, 115, Taiwan, Republic of China.
authors.forename: Chia-Chuan
authors.initials: CC
authors.lastname: Chang
authors.forename: Angela Fay
authors.initials: AF
authors.lastname: Ku
authors.forename: Yun-Yu
authors.initials: YY
authors.lastname: Tseng
authors.forename: Wen-Bin
authors.initials: WB
authors.lastname: Yang
authors.forename: Jim-Min
authors.initials: JM
authors.lastname: Fang
authors.forename: Chi-Huey
authors.initials: CH
authors.lastname: Wong
mesh_terms: D031667:Dendrobium / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D013237:Stereoisomerism; D013624:Taiwan
chemical_list: D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D006027:Glycosides