title: Chemical constituents of Euphorbia marschalliana Boiss.
abstract: Acetone extract of aerial parts of Euphorbia marschalliana collected from Iran has been subjected to different chromatography techniques for fractionation and purification. The stereo-structures of the myrsinol esters 15-O-acetyl-3-O-propionyl-5-O-butanoyl-7-O-nicotinoylmyrsinol (1) and 15-O-acetyl-3,5-O-dibutanoyl-7-O-nicotinoylmyrsinol (2) have been probed using ROESY spectroscopy and modified for the stereochemistry at C-6, C-12 and C-13. Beta-sitosterol (3), 29-norcycloart-5-ene (4), 5,8-lanostadiene-3beta-ol (5), 3beta,24(S),25-trihydroxycycloartane (6), 3beta,24(R),25-trihydroxycycloartane (7) and 24-methylenecycloartan-3beta-ol (8) were identified for the first time in this plant.
authors.affiliation: Department of Phytochemistry, Medicinal Plants Research Institute, Shahid Beheshti University, Evin, Tehran, Iran. a-jassbi@cc.sbu.ac.ir
authors.forename: Amir Reza
authors.initials: AR
authors.lastname: Jassbi
authors.forename: Simin
authors.initials: S
authors.lastname: Zamanizadehnajari
authors.forename: Satoshi
authors.initials: S
authors.lastname: Tahara
mesh_terms: D000096:Acetone; D018360:Crystallography, X-Ray / Q000379:methods; D004952:Esters / Q000737:chemistry* / Q000302:isolation & purification; D028481:Euphorbia / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D008968:Molecular Conformation; D009525:Niacin / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification; D035261:Plant Components, Aerial / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D012855:Sitosterols / Q000737:chemistry* / Q000302:isolation & purification; D013729:Terpenes / Q000737:chemistry* / Q000302:isolation & purification; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D004952:Esters; D010936:Plant Extracts; D012855:Sitosterols; D013729:Terpenes; D014315:Triterpenes; D000096:Acetone; D009525:Niacin; C025473:gamma-sitosterol