title: New dimeric phenanthrene and flavone from Spiranthes sinensis.
abstract: From the whole plant of Spiranthes sinensis, one novel dimeric phenanthrene, 2,2'-dihydroxy-5,5',7,7'-tetramethoxy-9,9',10,10'-tetrahydro-3,3'-biphenanthrene (1) and flavone 5-hydroxy-3,7-dimethoxy-4'-(1-hydroxy-3-methylbut-3-en-2-yloxy)-flavone (2) were isolated along with three other known flavonoids, which are reported for the first time from this species. Their structures were established after an extensive analysis by 1D and 2D NMR spectroscopy (NOESY, HSQC, and HMBC) as well as HR-TOF-MS.
authors: Department of Pharmaceutics and Bioengineering , School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
authors: Cong-Ying
authors: CY
authors: Li
authors: Jing
authors: J
authors: Liu
authors: Xue-Hui
authors: XH
authors: Su
authors: Zhi-Peng
authors: ZP
authors: Yuan
authors: Yu-Jiao
authors: YJ
authors: Zhong
authors: Yan-Fang
authors: YF
authors: Li
authors: Bing
authors: B
authors: Liang
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D047309:Flavones / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D029595:Orchidaceae / Q000737:chemistry*; D010616:Phenanthrenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: C582360:2,2'-dihydroxy-5,5',7,7'-tetramethoxy-9,9',10,10'-tetrahydro-3,3'-biphenanthrene; C582361:5-hydroxy-3,7-dimethoxy-4'-(1-hydroxy-3-methylbut-3-en-2-yloxy)flavone; D004365:Drugs, Chinese Herbal; D047309:Flavones; D010616:Phenanthrenes