Conversion of .alpha.-Keto Esters into .beta.,.beta.-Difluoro-.alpha.-keto Esters and Corresponding Acids: A Simple Route to a Novel Class of Serine Protease Inhibitors
摘要:
The preparation of a series of beta,beta-difluoro-alpha-keto esters and corresponding acids RCF(2)COCO(2)R' (R = Me, Et; i-Pr, Bn, and Ph; R' = Et and H), designed as potential inhibitors of serine proteases, is described. The standard procedure developed consists in the initial formation of an alpha,alpha-difluoro ester from an alpha-keto ester, followed by a simple four-step sequence involving the synthesis of hemiacetal, cyanohydrin, and alpha-hydroxy ester difluorinated intermediates. This method provides an easy route to beta,beta-difluoro-alpha-keto esters and corresponding acids, via ''formal'' insertion of a difluoromethylene group between the R substituent and the alpha-carbonyl group of a generic alpha-keto ester.
Conversion of .alpha.-Keto Esters into .beta.,.beta.-Difluoro-.alpha.-keto Esters and Corresponding Acids: A Simple Route to a Novel Class of Serine Protease Inhibitors
摘要:
The preparation of a series of beta,beta-difluoro-alpha-keto esters and corresponding acids RCF(2)COCO(2)R' (R = Me, Et; i-Pr, Bn, and Ph; R' = Et and H), designed as potential inhibitors of serine proteases, is described. The standard procedure developed consists in the initial formation of an alpha,alpha-difluoro ester from an alpha-keto ester, followed by a simple four-step sequence involving the synthesis of hemiacetal, cyanohydrin, and alpha-hydroxy ester difluorinated intermediates. This method provides an easy route to beta,beta-difluoro-alpha-keto esters and corresponding acids, via ''formal'' insertion of a difluoromethylene group between the R substituent and the alpha-carbonyl group of a generic alpha-keto ester.
[EN] IMIDAZOPYRIDINE EZH2 INHIBITORS<br/>[FR] INHIBITEURS D'EZH2 DE TYPE IMIDAZOPYRIDINE
申请人:BAYER PHARMA AG
公开号:WO2016102493A1
公开(公告)日:2016-06-30
The present invention relates to imidazopyridines of general formula (I), to a method for their preparation, to intermediates for their preparation, to pharmaceutical compositions comprising at least one of those compounds, and to the use thereof.
[EN] FLUORO-SUBSTITUTED 3,5-DICYANO-4-(1H-INDAZOL-5-YL)-2,6-DIMETHYL-1,4-DIHYDROPYRIDINE DERIVATIVES AND METHODS OF USE THEREOF<br/>[FR] DÉRIVÉS DE 3,5-DICYANO-4-(1H-INDAZOL-5-YL)-2,6-DIMÉTHYL-1,4- DIHYDROPYRIDINE À SUBSTITUTION FLUORO ET LEURS MÉTHODES D'UTILISATION
申请人:BAYER SCHERING PHARMA AG
公开号:WO2011042368A1
公开(公告)日:2011-04-14
The present invention relates to novel fluoro-substituted 3,5-dicyano-4-(1H-indazol-5-yl)-2,6-dimethyl-1,4-dihydropyridine derivatives having protein tyrosine kinase inhibitory activity, to a process for the manufacture thereof and to the use thereof for the treatment of c-Met-mediated diseases or c-Met-mediated conditions, particularly cancer and other proliferative disorders.
Fluoro-substituted 3,5-dicyano-4-(1H-indazol-5-yl)-2,6-dimethyl-1,4-dihydropyridine derivatives and methods of use thereof
申请人:Michels Martin
公开号:US20120264785A1
公开(公告)日:2012-10-18
The present invention relates to novel fluoro-substituted 3,5-dicyano-4-(1H-indazol-5-yl)-2,6-dimethyl-1,4-dihy-dropyridine derivatives having protein tyrosine kinase inhibitory activity, to a process for the manufacture thereof and to the use thereof for the treatment of c-Met-mediated diseases or c-Met-mediated conditions, particularly cancer and other proliferative disorders.
PGD2 receptor antagonists for the treatment of inflammatory diseases
申请人:Ghosh Shomir
公开号:US20090181966A1
公开(公告)日:2009-07-16
Disclosed herein are compounds represented by Structural Formula (I) and (I-A):
Also disclosed is the use of such compounds for inhibiting the G-protein coupled receptor referred to as chemoattractant receptor-homologous molecule expressed on Th2, or simply “CRTH2” for the treatment of inflammatory disorders. The variables in Structural Formula (I) and (I-A) are defined herein.