title: Three novel compounds from the leaves of Smallanthus sonchifolius.
abstract: Three novel compounds, together with five known ingredients, octacosanol, 3',4',5-trihydroxy-3,7-dimethoxyflavone, 3,4-dihydroxybenzaldehyde, isorhamnetin, and ent-kaurane-3beta,16beta,17-triol, were obtained from the leaves of Smallanthus sonchifolius (yacon), and their structures were elucidated as ent-kaurane-3beta,16beta,17,18-tertol (1), 3R,7E-9-butoxyl-megastigma-3-ol-3-O-beta-D-glucopyranoside (2), and 3S,5R,6Z-megastigma-6-en-3,5,8,9-tertol (3) on the basis of spectroscopic and chemical methods.
authors.affiliation: School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, China.
authors.forename: Ying-Kun
authors.initials: YK
authors.lastname: Qiu
authors.forename: Ting-Guo
authors.initials: TG
authors.lastname: Kang
authors.forename: De-Qiang
authors.initials: DQ
authors.lastname: Dou
authors.forename: Li
authors.initials: L
authors.lastname: Liang
authors.forename: Feng
authors.initials: F
authors.lastname: Dong
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D003510:Cyclohexanes / Q000737:chemistry*; D045786:Diterpenes, Kaurane / Q000737:chemistry*; D005960:Glucosides / Q000737:chemistry*; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry*
chemical_list: C539277:3R,7E-9-butoxyl-megastigma-3-ol-3-O-beta-D-glucopyranoside; D003510:Cyclohexanes; D045786:Diterpenes, Kaurane; D005960:Glucosides; C539276:kaurane-3beta,16beta,17,18-tertol