title: Arisandilactone A, a new triterpenoid from the fruits of Schisandra arisanensis.
abstract: A phytochemical investigation of the fruits of Schisandra arisanensis has yielded a novel triterpenoid, arisandilactone A (1). Compound 1 has an unprecedented skeleton having a 5/5/7/5/8/5-fused hexacyclic ring system. The structure of 1 was elucidated by spectroscopic methods, especially 2D NMR techniques (COSY, HMQC, HMBC, and NOESY) and was confirmed by X-ray crystallographic analysis. A plausible biosynthetic pathway for 1 is also discussed.
authors.affiliation: School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan.
authors.forename: Yuan-Bin
authors.initials: YB
authors.lastname: Cheng
authors.forename: Tzu-Ching
authors.initials: TC
authors.lastname: Liao
authors.forename: I-Wen
authors.initials: IW
authors.lastname: Lo
authors.forename: Yu-Chen
authors.initials: YC
authors.lastname: Chen
authors.forename: Yuh-Chi
authors.initials: YC
authors.lastname: Kuo
authors.forename: Shun-Ying
authors.initials: SY
authors.lastname: Chen
authors.forename: Ching-Te
authors.initials: CT
authors.lastname: Chien
authors.forename: Ya-Ching
authors.initials: YC
authors.lastname: Shen
mesh_terms: D002845:Chromatography; D005638:Fruit / Q000737:chemistry*; D006571:Heterocyclic Compounds / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D032141:Schisandra / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification*
chemical_list: D006571:Heterocyclic Compounds; D014315:Triterpenes; C549485:arisandilactone A