Efficient Synthesis of [6-Chloro-2-(4-chlorobenzoyl)-1<i>H</i>-indol-3-yl]-acetic Acid, a Novel COX-2 Inhibitor
作者:Stéphane Caron、Enrique Vazquez、Rodney W. Stevens、Kazunari Nakao、Hiroki Koike、Yoshinori Murata
DOI:10.1021/jo034274r
日期:2003.5.1
The synthesis of 6-chloro-2-(4-chlorobenzoyl)-1H-indol-3-ylacetic acid (1), a selective cyclooxygenase 2 (COX-2) inhibitor, is described. The synthesis relied on a novel indole formation that involved an alkylation/1,4-addition/elimination/isomerization cascade. It was demonstrated that the entire sequence from sulfonamide 13 and bromoketone 14 to the desired indole (1) could be executed in a single
HETEROCYCLIC INHIBITORS OF HISTAMINE RECEPTORS FOR THE TREATMENT OF DISEASE
申请人:Borchardt Allen J.
公开号:US20100120741A1
公开(公告)日:2010-05-13
The present invention relates to compounds and methods which may be useful as inhibitors of H
1
R and/or H
4
R for the treatment or prevention of inflammatory, autoimmune, allergic, and ocular diseases.
Mild and efficient synthesis and base-promoted rearrangement of novel isoxazolo[4,5-b]pyridines
作者:Vladislav V Nikol’skiy、Mikhail E Minyaev、Maxim A Bastrakov、Alexey M Starosotnikov
DOI:10.3762/bjoc.20.94
日期:——
the synthesis of isoxazolo[4,5-b]pyridines has been developed on the basis of readily available 2-chloro-3-nitropyridines via the intramolecular nucleophilic substitution of the nitro group as a key step. The previously unknown base-promoted Boulton–Katritzky rearrangement of isoxazolo[4,5-b]pyridine-3-carbaldehyde arylhydrazones into 3-hydroxy-2-(2-aryl[1,2,3]triazol-4-yl)pyridines was observed. Beilstein
抽象的 在容易获得的2-氯-3-硝基吡啶的基础上,通过硝基的分子内亲核取代作为关键步骤,开发了一种有效合成异恶唑并[4,5- b ]吡啶的方法。先前未知的碱基促进的异恶唑并[4,5- b ]吡啶-3-甲醛芳基腙重排为3-羟基-2-(2-芳基[1,2,3]三唑-4-基)吡啶被观察到。 Beilstein J. Org. Chem. 2024, 20, 1069–1075. doi:10.3762/bjoc.20.94
Convenient modification of the Leimgruber-Batcho indole synthesis: reduction of 2-nitro-β-pyrrolidinostyrenes by the FeCl3–activated carbon–N2H4∙H2O system
作者:I. V. Taydakov、T. Ya. Dutova、E. N. Sidorenko、S. S. Krasnoselsky
DOI:10.1007/s10593-011-0776-2
日期:2011.7
A new catalytic system containing ferric chloride, activated carbon, and hydrazine has been proposed for the reductive cyclization of beta-dialkylamino-2-nitrostyrenes to give the corresponding indoles (Leimgruber-Batcho synthesis). Various substituted indoles may be obtained in high yield under these conditions.
[EN] HETEROCYCLIC INHIBITORS OF HISTAMINE RECEPTORS FOR THE TREATMENT OF DISEASE<br/>[FR] INHIBITEURS HÉTÉROCYCLIQUES DE RÉCEPTEURS DE L'HISTAMINE DESTINÉS AU TRAITEMENT DE MALADIE