The α-halogenation of α,β-unsaturated carbonyls and dihalogenation of alkenes using bisacetoxyiodobenzene/pyridine hydrohalides
作者:Marsewi Ngatimin、Christopher J. Gartshore、Jeremy P. Kindler、Sudha Naidu、David W. Lupton
DOI:10.1016/j.tetlet.2009.08.038
日期:2009.11
A procedure for the α-chlorination or bromination of a number of α,β-unsaturated carbonyls, and the dichlorination or bromination of alkenes, is developed using bisacetoxyiodobenzene (BAIB) and the HCl or HBr salt of pyridine. The reaction proceeds in an acceptable to a good yield and has a broad substrate scope. The dibromination is also achieved using a chiral I[V] reagent, although little enantioselectivity
[EN] 1 -(CYCLOPENT-2-EN-1 -YL)-3-(2-HYDROXY-3-(ARYLSULFONYL)PHENYL)UREA DERIVATIVES AS CXCR2 INHIBITORS<br/>[FR] DÉRIVÉS DE 1-(CYCLOPENT-2-EN-1-YL)-3-(2-HYDROXY-3-(ARYLSULFONYL)PHÉNYL)-URÉE UTILISÉS COMME INHIBITEURS DE CXCR2
申请人:GLAXOSMITHKLINE IP DEV LTD
公开号:WO2015181186A1
公开(公告)日:2015-12-03
The invention relates to 1-(3-sulfonylphenyl)-3-(cyclopent-2-en-1-yl)urea derivatives, and their use in treating or preventing diseases and conditions mediated by the CXCR2 receptor. In addition, the invention relates to compositions containing the derivatives and processes for their preparation.
Discovery of Novel 1-Cyclopentenyl-3-phenylureas as Selective, Brain Penetrant, and Orally Bioavailable CXCR2 Antagonists
作者:Hongfu Lu、Ting Yang、Zhongmiao Xu、Xichen Lin、Qian Ding、Yueting Zhang、Xin Cai、Kelly Dong、Sophie Gong、Wei Zhang、Metul Patel、Royston C. B. Copley、Jianing Xiang、Xiaoming Guan、Paul Wren、Feng Ren
DOI:10.1021/acs.jmedchem.7b01854
日期:2018.3.22
pharmacology with excellent selectivity over CXCR1 and other chemokine receptors. Rat and dog pharmacokinetics (PK) revealed good oral bioavailability, high oral exposure, and desirable elimination half-life of the compound in both species. In addition, the compound demonstrated dose-dependent efficacy in the in vivo pharmacology neutrophil infiltration “air pouch” model in rodents after oral administration. Further
The Reaction of α, β-Unsaturated Cycloalkenones with Azides. I. The Anomalous Products in the Schmidt Reaction
作者:Kemmotsu Mitsuhashi、Keiichi Nomura
DOI:10.1248/cpb.13.951
日期:——
2-Methyl-(Ia), 2-phenyl-(Ib), 3-methyl-2-cyclohexenone (Xa) and 2-cyclohexenone (Xc) were reacted with equivalent mole of sodium azide in polyphosphoric acid. In all cases, 2-amino-2-cyclohexenone derivatives were yielded as abnormal reaction products. In the cases of Ia and Ib, migration of the methyl and the phenyl group to the position 3 was observed accompanied by the simultaneous introduction of an amino group at the position 2, respectively.
Formation of 2-phenylselenenylenones and 2-haloenones from enones. Mechanistic and synthetic aspects, X-ray crystal structures of intermediates
作者:Lars Engman、Karl Wilhelm Törnroos
DOI:10.1016/0022-328x(90)80171-u
日期:1990.7
by X-ray diffraction. Although this and similar compounds were readily dehydrohalogenated to give vinylic selenides, they were ruled out as intermediates in the synthesis of 2-phenylselenenylenones from enones and the 1:1 complex of PhSeCl and pyridine.