title: New compounds from leaves of Smallanthus sonchifolius.
abstract: A new octadecatrienoic acid and a new benzyl glycoside, along with a known compound, were isolated from the leaves of Smallanthus sonchifolius. The structures of the two new compounds were elucidated as 13(R)-hydroxy-octadeca-(9E,11E,15Z)-trienoic acid (1) and benzyl alcohol 7-O-alpha-L-arabinopyranosyl(1" --> 2')-beta-D-glucopyranoside (2) on the basis of spectroscopic analysis and chemical evidence. The known compound was identified as 13(R)-hydroxy-octadeca-(9Z,11E,15Z)-trienoic acid (3) by comparison of its spectral data with that reported. Compound 3 was isolated for the first time from the title plant.
authors.affiliation: College of Pharmacy, Liaoning University of Traditional Chinese Medicine, 77 Life one Road, Dalian Economic and Technical Development Zone, Dalian 116600, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Zheng
authors.forename: Gai
authors.initials: G
authors.lastname: Kuo
authors.forename: Dou
authors.initials: D
authors.lastname: De-Qiang
authors.forename: Kang
authors.initials: K
authors.lastname: Ting-Guo
authors.forename: Shi
authors.initials: S
authors.lastname: Yu-Yuan
authors.forename: Dong
authors.initials: D
authors.lastname: Feng
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D001592:Benzyl Alcohols / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification; D008042:Linolenic Acids / Q000737:chemistry / Q000302:isolation & purification*; D019906:Nuclear Magnetic Resonance, Biomolecular; D009904:Optical Rotation; D010936:Plant Extracts / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D001592:Benzyl Alcohols; D006027:Glycosides; D008042:Linolenic Acids; D010936:Plant Extracts