title: Phragmalin limonoids from Chukrasia tabularis var. velutina.
abstract: Two new C-15-acyl phragmalin limonoids, velutinalides A and B, featuring a C-16/C-30 δ-lactone ring, and a new structurally related natural product, R310B8, were isolated from the leaves of Chukrasia tabularis var. velutina. Their structures were elucidated on the basis of extensive spectroscopic data analyses and by comparison of their NMR data with those of related known compounds.
authors.affiliation: State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P. R. China.
authors.forename: Xue-Lian
authors.initials: XL
authors.lastname: Chen
authors.forename: Hai-Li
authors.initials: HL
authors.lastname: Liu
authors.forename: Yue-Wei
authors.initials: YW
authors.lastname: Guo
mesh_terms: D002681:China; D036701:Limonins / Q000737:chemistry* / Q000302:isolation & purification; D029582:Meliaceae / Q000737:chemistry*; D019906:Nuclear Magnetic Resonance, Biomolecular; D018515:Plant Leaves / Q000737:chemistry
chemical_list: D036701:Limonins