New amino-alkyl-amide derivatives as CCR3 receptor ligands
申请人:PAPPNE BEHR Agnes
公开号:US20080287434A1
公开(公告)日:2008-11-20
The invention relates to a compound of the general formula (I),
as defined herein which is useful for the treatment of a pathology in a patient wherein a CCR3 receptor plays a role in the development of the pathology, and pharmaceutical preparations containing such compound.
The invention is also directed to a process for preparing the compound of the general formula (I), and intermediate useful in the preparation.
Selective ring closure to substituted pyrido[1,2-b]-as-triazinium salt
作者:György Hajós、Zsuzsanna Riedl、Eszter Gács-Baitz、Messmer András
DOI:10.1016/s0040-4020(01)86594-7
日期:1992.9
Reaction of arylglyoxal with 1,2-diaminopyridinium salt 1 under acidic conditions afforded 2-aryl-pyrido[1,2-b]-as-triazinium salt 9 selectively, whereas cyclization of the same dioxo compound with 1-amino-2-iminopyridine 5 under neutral conditions - due to "umpolung" of the exo nitrogen atom - led exclusively to the 3-aryl isomer 8.