The present invention relates to compounds of formula (I), to the process for preparing such compounds and to their use in the treatment of a pathological condition or disease susceptible to amelioration by CRTh2 antagonist activity.
[EN] NEW CRTH2 ANTAGONISTS<br/>[FR] NOUVEAUX ANTAGONISTES DE CRTH2
申请人:ALMIRALL SA
公开号:WO2013010880A1
公开(公告)日:2013-01-24
The present invention relates to compounds of formula (I), to the process for preparing such compounds and to their use in the treatment of a pathological condition or disease susceptible to amelioration by CRTh2 antagonist activity.
[GRAPHICS]Reaction of aryl nitriles with potassium ethyl malonate in the presence of zinc chloride and a catalytic amount of Hunig's base provided beta-amino acrylates in moderate to good yield. Compared to the classical Blaise reaction, this reaction is safer (endothermic), devoid of lachrymatory reagent, and is possible with 0.5-1.0 equiv of zinc chloride.