Compounds of formula I
in free or salt or solvate form, where R
1
, R
2
and R
5
have the meanings as indicated in the specification, are useful for treating diseases mediated by the ALK-
5
and/or ALK-
4
receptor. Pharmaceutical compositions that contain the compounds and processes for preparing the compounds are also described.
[EN] PYRAZOLE DERIVATIVES AGAINST TGF OVEREXPRESSION<br/>[FR] DERIVES PYRAZOLE CONTRE LA SUREXPRESSION DU FACTEUR
申请人:GLAXO GROUP LTD
公开号:WO2002066462A1
公开(公告)日:2002-08-29
Therapeutically active pyrazole derivatives of formula (I) wherein R1-R3 are as defined in the specification, processes for the preparation thereof, the use thereof in therapy, particularly in the treatment or prophylaxis of disorders characterised by overexpression of transforming growth factor β (TGF-β), and pharmaceutical compositions for use in such therapy. Formula (I)
Therapeutically active pyrazole derivatives of formula (I) wherein R
1
-R
3
are as defined in the specification, processes for the preparation thereof, the use thereof in therapy, particularly in the treatment or prophylaxis of disorders characterised by overexpression of transforming growth factor &bgr; (TGF-&bgr;), and pharmaceutical compositions for use in such therapy, Formula (I)
1
Efficient Suzuki−Miyaura Coupling of (Hetero)aryl Chlorides with Thiophene- and Furanboronic Acids in Aqueous <i>n-</i>Butanol
作者:Christoph A. Fleckenstein、Herbert Plenio
DOI:10.1021/jo8001886
日期:2008.4.1
An efficient Suzuki cross-coupling protocol enables the reaction of N-hetero and normal aryl chlorides with thiophene- and furanboronic acids. Coupling is effected in aqueous n-butanol as the solvent in near quantitative yield with a catalyst loading of 0.1 - 1 mol %. For heterocyclic substrates aqueous catalysis is found to be more efficient than Suzuki coupling under anhydrous conditions. The developed Suzuki coupling procedure utilizes biodegradable solvents and is useful for large scale reactions, as it includes the facile product separation from a biphasic solvent mixture without the need for additional organic solvents during workup.
Homolytic substitution reactions in heterocyclic series. XII. Heteroarylation of thiophene