Small molecule antagonists of the gonadotropin-releasing hormone (GnRH) receptor: Structure–activity relationships of small heterocyclic groups appended to the 2-phenyl-4-piperazinyl-benzimidazole template
作者:Diane B. Hauze、Murty V. Chengalvala、Joshua E. Cottom、Irene B. Feingold、Lloyd Garrick、Daniel M. Green、Christine Huselton、Wenling Kao、Kenneth Kees、Joseph T. Lundquist、Charles W. Mann、John F. Mehlmann、John F. Rogers、Linda Shanno、Jay Wrobel、Jeffrey C. Pelletier
DOI:10.1016/j.bmcl.2009.02.043
日期:2009.4
2-phenyl-4-piperazinyl-benzimidazole N-ethyluracil GnRH receptor antagonist 1 following oral administration in rats. A series of small heterocycles were appended to the 2-(4-tert-butylphenyl)-4-piperazinyl-benzimidazole template in place of the N-ethyluracil. Two imidazole analogues, 32 and 41, were shown to possess substantial in vitro potency at the target receptor (hGnRH IC50 = 7 and 18 nM, respectively)
先前的报道描述了大鼠口服给药后2-苯基-4-哌嗪基-苯并咪唑N-乙基尿嘧啶GnRH受体拮抗剂1的血清LH抑制药理作用。一系列小杂环取代N-乙基尿嘧啶被附加到2-(4-叔丁基苯基)-4-哌嗪基-苯并咪唑模板上。已显示两种咪唑类似物32和41在靶受体上具有显着的体外效能(分别为hGnRH IC 50 = 7和18 nM)和水溶性(在pH 7.4下分别为55和100μg/ mL)。两种化合物在大鼠中均具有较高的口服生物利用度,其中32种具有较高的口服生物利用度。进一步检查了一个切除睾丸的大鼠模型的血清LH抑制的基础上增加了41分布的数量。口服32只睾丸切除的大鼠血清LH水平有降低的趋势。