Synthetic studies on novel Syk inhibitors. Part 1: Synthesis and structure–activity relationships of pyrimidine-5-carboxamide derivatives
作者:Hiroyuki Hisamichi、Ryo Naito、Akira Toyoshima、Noriyuki Kawano、Atsushi Ichikawa、Akiko Orita、Masaya Orita、Noritaka Hamada、Makoto Takeuchi、Mitsuaki Ohta、Shin-ichi Tsukamoto
DOI:10.1016/j.bmc.2005.05.033
日期:2005.8
4-anilinopyrimidine-5-carboxamides. Enzyme screening indicated that an aminoethylamino moiety at the 2-position of the pyrimidine ring was important for Syk inhibitory activity, and an investigation of the substituents at the 4-position revealed that an anilino moiety substituted at the meta position was preferred. These compounds showed high selectivity for Syk, compared to other kinases, such as
脾酪氨酸激酶(Syk)是一种非受体型酪氨酸激酶,可介导造血细胞的多种反应。因此,Syk是有吸引力的治疗靶标,在对Syk抑制剂作为潜在的新型治疗剂的研究中,我们发现了4-苯胺基嘧啶-5-羧酰胺。酶筛选表明,嘧啶环2-位的氨基乙基氨基部分对Syk抑制活性很重要,对4-位取代基的研究表明,优选在间位取代的苯胺部分。与其他激酶(例如ZAP-70,c-Src和PKC)相比,这些化合物对Syk表现出高选择性,并且对RBL细胞释放5-HT表现出良好的抑制活性。其中,化合物9a抑制了小鼠的被动皮肤过敏反应,皮下注射后ID50为13 mg / kg。这些结果表明我们的化合物作为新型抗过敏剂值得进一步评估。