New <i>N</i>-(Pyridin-4-yl)-(indol-3-yl)acetamides and Propanamides as Antiallergic Agents
作者:Cecilia Menciu、Muriel Duflos、Fabienne Fouchard、Guillaume Le Baut、Peter Emig、Ute Achterrath、Istvan Szelenyi、Bernd Nickel、Jürgen Schmidt、Bernhard Kutscher、Eckhardt Günther
DOI:10.1021/jm981079+
日期:1999.2.1
N-(pyridin-4-yl)-(indol-3-yl)alkylamides 44-84 has been prepared in the search of novel antiallergic compounds. Synthesis of the desired ethyl (2-methyindol-3-yl)acetates 1-4 was achieved by indolization under Fischer conditions; Japp-Klingemann method followed by 2-decarboxylation afforded the ethyl (indol-3-yl)alkanoates 17-25. Amidification was successfully carried out by condensation of the corresponding
为了寻找新的抗过敏化合物,已经制备了一系列新的N-(吡啶-4-基)-(吲哚-3-基)烷基酰胺44-84。通过在Fischer条件下进行吲哚化来合成所需的(2-甲基吲哚-3-基)乙酸乙酯1-4。Japp-Klingemann方法,然后进行2-脱羧,得到(吲哚-3-基)链烷酸乙酯17-25。通过使相应的酸或其N-芳基(甲基)衍生物与2-氯-1-甲基吡啶碘化物促进的4-氨基吡啶缩合而成功进行了酰胺化反应。通过改变吲哚取代基(R1,R2,R)和烷链长度(n = 1、2、3)来改善标题系列的抗过敏效力的努力导致选择N-(吡啶-4 41种化合物中的45-基)-[1-(4-氟苄基)吲哚-3-基]乙酰胺45。使用豚鼠腹膜肥大细胞,在卵白蛋白诱导的组胺释放测定中,该酰胺的效价比阿司咪唑高406倍,IC50 = 0.016 microM。在Th-2细胞的IL-4产生测试中,其抑制活性与参考组胺拮抗剂的抑制活性相同(IC50