New compounds from leaves of Smallanthus sonchifolius.
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.
Zheng
Xiang
X
College of Pharmacy, Liaoning University of Traditional Chinese Medicine, 77 Life one Road, Dalian Economic and Technical Development Zone, Dalian 116600, China.
Kuo
Gai
G
De-Qiang
Dou
D
Ting-Guo
Kang
K
Yu-Yuan
Shi
S
Feng
Dong
D
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
D001592:Benzyl Alcohols; D006027:Glycosides; D008042:Linolenic Acids; D010936:Plant Extracts