title: Anti-inflammatory constituents and new pterocarpanoid of Crotalaria pallida.
abstract: One new pterocarpanoid, crotafuran E (1), and three known compounds were isolated from the bark of Crotalaria pallida. The structure of 1 was determined by spectral methods. Two pterocarpanoids, crotafurans A (2) and B (3), previously isolated from this plant, showed significant concentration-dependent inhibitory effects on the NO production in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophage-like cells, with IC(50) values of 23.0 +/- 1.0 and 19.0 +/- 0.2 microM, respectively. Compound 3 also inhibited the LPS/interferon-gamma (IFN-gamma)-stimulated NO production in N9 microglial cells with an IC(50) value of 9.4 +/- 0.9 microM. Moreover, compound 2 produced a concentration-dependent inhibition of the release of beta-glucuronidase and lysozyme from rat neutrophils in response to formyl-Met-Leu-Phe/cytochalasin B (fMLP/CB) with IC(50) values of 7.8 +/- 1.4 and 9.5 +/- 2.1 microM, respectively.
authors.affiliation: School of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan 807, Republic of China.
authors.forename: Jing-Ru
authors.initials: JR
authors.lastname: Weng
authors.forename: Lo-Ti
authors.initials: LT
authors.lastname: Tsao
authors.forename: Ming-Hong
authors.initials: MH
authors.lastname: Yen
authors.forename: Jih-Pyang
authors.initials: JP
authors.lastname: Wang
authors.forename: Chun-Nan
authors.initials: CN
authors.lastname: Lin
mesh_terms: D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D029864:Crotalaria / Q000737:chemistry*; D003571:Cytochalasin B / Q000494:pharmacology; D005663:Furans / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D006576:Heterocyclic Compounds, 4 or More Rings / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D020128:Inhibitory Concentration 50; D007371:Interferon-gamma / Q000494:pharmacology; D008070:Lipopolysaccharides / Q000494:pharmacology; D008264:Macrophages / Q000187:drug effects; D015394:Molecular Structure; D009240:N-Formylmethionine Leucyl-Phenylalanine / Q000494:pharmacology; D009504:Neutrophils / Q000187:drug effects; D009569:Nitric Oxide / Q000378:metabolism; D019906:Nuclear Magnetic Resonance, Biomolecular; D024301:Plant Bark / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D051381:Rats; D013624:Taiwan
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D005663:Furans; D006576:Heterocyclic Compounds, 4 or More Rings; D008070:Lipopolysaccharides; C476742:crotafuran E; D009569:Nitric Oxide; D003571:Cytochalasin B; D009240:N-Formylmethionine Leucyl-Phenylalanine; D007371:Interferon-gamma