title: Isolation and characterization of secondary metabolites from Plumeria obtusa.
abstract: Chromatographic purification of the methanolic extract of Plumeria obtusa yielded two new iridoid obtusadoids A (1) and B (2), along with eight known compounds plumieridin A (3), plumieridine (4), 1α-plumieride (5), 15-demethylplumieride (6), rel-(3R,3'S,4R,4'S)-3,3',4,4'-tetrahydro-6,6'-dimethoxy[3,3'-bi-2H-benzopyran]-4,4'-diol (7), glochiflavanoside B (8), oleanolic acid (9), and methyl coumarate (10). The structures of all the isolates (1-10) were determined by NMR spectroscopy and mass spectrometry. The data of known compounds (3-10) were further compared with the reported data for these compounds.
authors: Department of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur, 63100 Bahawalpur, Pakistan. m.saleem@iub.edu.pk
authors: Muhammad
authors: M
authors: Saleem
authors: Nasim
authors: N
authors: Akhtar
authors: Naheed
authors: N
authors: Riaz
authors: Muhammad Shaiq
authors: MS
authors: Ali
authors: Abdul
authors: A
authors: Jabbar
mesh_terms: D029062:Apocynaceae / Q000737:chemistry*; D039823:Iridoids / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010154:Pakistan; D013237:Stereoisomerism
chemical_list: D039823:Iridoids; C569575:obtusadoid A; C569576:obtusadoid B