title: [Origin confirmation of a new natural product from Oldenlandia diffusa].
abstract: A new natural product, 4,4'-dihydroxy-a-truxillic acid (I) was isolated from Oldenlandia diffusa (Willd) Roxb. I is a derivate of cyclobutane, which were obtained chemically by photochemical reaction. Our works confirmed that the compound is a plant metabolite, not a secondary product produced during its extraction and isolation.
authors.affiliation: Guangdong College of Pharmacy, Guangzhou 510224.
authors.forename: H
authors.initials: H
authors.lastname: Lu
mesh_terms: D003373:Coumaric Acids / Q000737:chemistry; D003503:Cyclobutanes / Q000737:chemistry / Q000302:isolation & purification*; D008027:Light; D009682:Magnetic Resonance Spectroscopy; D032067:Oldenlandia / Q000737:chemistry* / Q000378:metabolism; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
chemical_list: D003373:Coumaric Acids; D003503:Cyclobutanes; D010936:Plant Extracts; C003731:truxillic acid