Contrary to the common idea that Fischer indole cyclization often cannot be effectively applied to the synthesis of the corresponding azaindoles, we show that this approach can be actually very efficient for the formation of 4- and 6-azaindoles bearing an electron-donating group on the starting pyridylhydrazines. Two 4-azaindole natural product analogues were synthesized in a few steps and very good
We report the synthesis and biological evaluation of N-[(1-aryl-1H-indazol-5-yl)methyl]amide derivatives as Smoothened antagonists and inhibitors of the Hedgehog pathway. Identification of the lead structure 1 by HTS, followed by SAR study on the amide and aryl portions led to the discovery of antagonists with nanomolar activity.
Pyrazolopyrrolidine Derivatives and their Use in the Treatment of Disease
申请人:BLANK Jutta
公开号:US20140349990A1
公开(公告)日:2014-11-27
The present invention provides a compound of formula (I) or a pharmaceutically acceptable salt thereof;
a method for manufacturing the compounds of the invention, and its therapeutic uses. The present invention further provides a combination of pharmacologically active agents and a pharmaceutical composition.
[EN] PYRAZOLOPYRROLIDINE DERIVATIVES AND THEIR USE IN THE TREATMENT OF DISEASE<br/>[FR] NOUVEAUX DÉRIVÉS PYRAZOLOPYRROLIDINE ET LEUR UTILISATION DANS LE TRAITEMENT DE MALADIES
申请人:NOVARTIS AG
公开号:WO2014191896A1
公开(公告)日:2014-12-04
The present invention provides a compound of formula (I) or a pharmaceutically acceptable salt thereof; a method for manufacturing the compounds of the invention, and its therapeutic uses. The present invention further provides a combination of pharmacologically active agents and a pharmaceutical composition.
Fischer indole cyclization has recently been described as an efficient approach to the synthesis of azaindoles bearing electron-donating groups. We now show that this cascade reaction can be very efficient for the formation of a wider range of 4- and 6-azaindoles by using microwave irradiation.