title: Isolation and characterization of biogenetically related highly oxygenated nortriterpenoids from Schisandra chinensis.
abstract: Pre-schisanartanin (1) and schindilactones A-C (2-4) were isolated from Schisandra chinensis. Among them, compound 1 had an unprecedented carbon skeleton. More importantly, the structure features of this compound provided new insight into the biosynthesis of triterpenoids with schisanartane skeleton. Their structures were determined by extensive spectroscopic analysis, single-crystal X-ray diffraction, and on the basis of the absolute structure of one related nortriterpenoid (5), which was determined for the first time by a modified Mosher method.
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, People's Republic of China.
authors.forename: Sheng-Xiong
authors.initials: SX
authors.lastname: Huang
authors.forename: Rong-Tao
authors.initials: RT
authors.lastname: Li
authors.forename: Jing-Ping
authors.initials: JP
authors.lastname: Liu
authors.forename: Yang
authors.initials: Y
authors.lastname: Lu
authors.forename: Ying
authors.initials: Y
authors.lastname: Chang
authors.forename: Chun
authors.initials: C
authors.lastname: Lei
authors.forename: Wei-Lie
authors.initials: WL
authors.lastname: Xiao
authors.forename: Li-Bin
authors.initials: LB
authors.lastname: Yang
authors.forename: Qi-Tai
authors.initials: QT
authors.lastname: Zheng
authors.forename: Han-Dong
authors.initials: HD
authors.lastname: Sun
mesh_terms: D008958:Models, Molecular; D015394:Molecular Structure; D010100:Oxygen / Q000032:analysis / Q000737:chemistry*; D032141:Schisandra / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry*
chemical_list: D014315:Triterpenes; D010100:Oxygen