Discovery of 1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazoles as novel class of corticotropin releasing factor 1 receptor antagonists
作者:Takuto Kojima、Michiyo Mochizuki、Takafumi Takai、Yasutaka Hoashi、Sachie Morimoto、Masaki Seto、Minoru Nakamura、Katsumi Kobayashi、Yuu Sako、Maiko Tanaka、Naoyuki Kanzaki、Yohei Kosugi、Takahiko Yano、Kazuyoshi Aso
DOI:10.1016/j.bmc.2018.01.020
日期:2018.5
A new class of corticotropin releasing factor 1 (CRF1) receptor antagonists characterized by a tricyclic core ring was designed and synthesized. Novel tricyclic derivatives 2a–e were designed as CRF1 receptor antagonists based on conformation analysis of our original 2-anilinobenzimidazole CRF1 receptor antagonist. The synthesized tricyclic derivatives 2a–e showed CRF1 receptor binding activity with
设计并合成了以三环核心环为特征的新型促肾上腺皮质激素释放因子1(CRF 1)受体拮抗剂。新的三环衍生物2A - ë被设计为CRF 1基于我们的原始2-anilinobenzimidazole CRF的构象分析受体拮抗剂1受体拮抗剂。合成的三环衍生物2a - e具有CRF 1受体结合活性,IC 50值小于400 nM,而1,2,3,4-四氢嘧啶基-[1,2- a ]苯并咪唑衍生物2e选择具有较强体外CRF 1受体结合活性的前导化合物(IC 50 = 7.1 nM)。为优化前导化合物2e的药代动力学特性,我们在1位和6位上探索了合适的取代基,从而鉴定了具有强效CRF 1受体结合活性(IC 50 = 58 nM)的化合物42c -R。良好的口服生物利用度(大鼠中F = 68%)。化合物42c -R表现出对[ 125I] -CRF在额叶皮层中的结合(5和10 mg / kg,口服)以及对大鼠脑