6,8-Di-C-glycosyl flavonoids from Dendrobium huoshanense.
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.
Chang
Chia-Chuan
CC
The Genomics Research Center, Academia Sinica, Taipei, 115, Taiwan, Republic of China.
Ku
Angela Fay
AF
Tseng
Yun-Yu
YY
Yang
Wen-Bin
WB
Fang
Jim-Min
JM
Wong
Chi-Huey
CH
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
D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D006027:Glycosides