title: Two new triterpenoids from Ampelopsis japonica (Thunb.) Makino.
abstract: Two new triterpenoids were isolated from the ethanolic extract of the roots of Ampelopsis japonica (Thunb.) Makino. Their structures were defined as 3α-trans-feruloyloxy-2α-O-acetylurs-12-en-28-oic acid (1) and methyl 3α-trans-feruloyloxy-2α-hydroxyurs-12-en-28-oate (2) on the basis of spectral analysis.
authors.affiliation: a Department of Pharmacy , Changzheng Hospital, Second Military Medical University , Shanghai , 200003 , P.R. China.
authors.forename: Junling
authors.initials: J
authors.lastname: Mi
authors.forename: Chunjie
authors.initials: C
authors.lastname: Wu
authors.forename: Chuntong
authors.initials: C
authors.lastname: Li
authors.forename: Fengmin
authors.initials: F
authors.lastname: Xi
authors.forename: Zhijun
authors.initials: Z
authors.lastname: Wu
authors.forename: Wansheng
authors.initials: W
authors.lastname: Chen
mesh_terms: D032421:Ampelopsis / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018517:Plant Roots / Q000737:chemistry; D013237:Stereoisomerism; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: C000590582:3alpha-trans-feruloyloxy-2alpha-O-acetylurs-12-en-28-oic acid; D004365:Drugs, Chinese Herbal; D014315:Triterpenes; C000590583:methyl 3alpha-trans-feruloyloxy-2alpha-hydroxyurs-12-en-28-oate