New antihistaminic N-heterocyclic 4-piperidinamines. 3. Synthesis and antihistaminic activity of N-(4-piperidinyl)-3H-imidazo[4,5-b]pyridin-2-amines
作者:Frans Janssens、Joseph Torremans、Marcel Janssen、Raymond A. Stokbroekx、Marcel Luyckx、Paul A. J. Janssen
DOI:10.1021/jm00150a030
日期:1985.12
the bioisosteric replacement of a 2-pyridyl ring for a phenyl nucleus in astemizole, a series of N-(4-piperidinyl)-3H-imidazo[4,5-b]pyridin-2-amines was synthesized and evaluated. The title compounds were obtained starting from either 8a or 8b by four synthetic methods. The in vivo antihistamine activity was evaluated by the compound 48/80-induced lethality test in rats and the histamine-induced lethality
为了研究阿司咪唑中苯基核的2-吡啶基环的生物立体取代,合成并评估了一系列N-(4-哌啶基)-3H-咪唑并[4,5-b]吡啶-2-胺。通过四种合成方法从8a或8b开始获得标题化合物。口服和/或皮下给药后,通过化合物48/80在大鼠中的致死性测试和豚鼠中组胺在致死性中的测试来评估体内抗组胺活性。化合物37(阿司咪唑的等排物)在大鼠中显示出最有效的抗组胺特性。但是,就作用持续时间和总效力而言,阿司咪唑优于37。