title: Three new bibenzyl derivatives from Dendrobium nobile.
abstract: Three new bibenzyl derivatives have been isolated from the stems of Dendrobium nobile Lindl. (Orchidaceae). Their structures were established as 4,5-dihydroxy-3,3',alpha-trimethoxybibenzyl (1), 4,4'-dihydroxy-3,3',5,alpha-tetramethoxybibenzyl (2) and 4-hydroxy-3,3',4',5,alpha-pentamethoxybibenzyl (3) on the basis of spectroscopic analysis.
authors.affiliation: College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China.
authors.forename: Xue
authors.initials: X
authors.lastname: Zhang
authors.forename: Hao
authors.initials: H
authors.lastname: Gao
authors.forename: Nai-Li
authors.initials: NL
authors.lastname: Wang
authors.forename: Xin-Sheng
authors.initials: XS
authors.lastname: Yao
mesh_terms: D001593:Benzyl Compounds / Q000737:chemistry* / Q000302:isolation & purification; D001632:Bibenzyls; D031667:Dendrobium / Q000737:chemistry*; D015394:Molecular Structure; D045788:Sesquiterpenes, Germacrane
chemical_list: C511961:4,4'-dihydroxy-3,3',5,alpha-tetramethoxybibenzyl; C511960:4,5-dihydroxy-3,3',alpha-trimethoxybibenzyl; C511962:4-hydroxy-3,3',4',5,alpha-pentamethoxybibenzyl; D001593:Benzyl Compounds; D001632:Bibenzyls; D045788:Sesquiterpenes, Germacrane