title: New norlignan derivatives from Curculigo capitulata.
abstract: Two new norlignan derivatives, crassifoside I (1) and sinensigenin C (2), were isolated from the rhizomes of Curculigo capitulate, along with six known norlignan derivatives, 1,1-bis(3,4-dihydroxyphenyl)-1-(2-furan)-methane (3), crassifogenin B (4), crassifoside A (5), breviscaside A (6), crassifoside D (7), and curcapital (8). Their structures were elucidated on the basis of spectral evidence and comparisons with literature data. The 1H and 13C NMR data of compound 3 was first assigned. Compounds 3-7 were isolated from this plant for the first time.
authors.affiliation: Anhui Province Key Laboratory of Research and Development of Chinese Medicine, School of Life Sciences, Anhui University, Hefei 230039, PR China.
authors.forename: Kai-Jin
authors.initials: KJ
authors.lastname: Wang
authors.forename: Cui-Cui
authors.initials: CC
authors.lastname: Zhu
authors.forename: Lei
authors.initials: L
authors.lastname: Di
authors.forename: Ning
authors.initials: N
authors.lastname: Li
authors.forename: You-Xing
authors.initials: YX
authors.lastname: Zhao
mesh_terms: D031408:Curculigo / Q000737:chemistry*; D017705:Lignans / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D027343:Rhizome
chemical_list: D017705:Lignans; D010936:Plant Extracts; C557366:crassifoside I; C557367:sinensigenin C