Discovery and Pharmacological Evaluation of Growth Hormone Secretagogue Receptor Antagonists
作者:Zhili Xin、Michael D. Serby、Hongyu Zhao、Christi Kosogof、Bruce G. Szczepankiewicz、Mei Liu、BoLiu,、Charles W. Hutchins、Kathy A. Sarris、Ethan D. Hoff、H. Douglas Falls、Chun W. Lin、Christopher A. Ogiela、Christine A. Collins、Michael E. Brune、Eugene N. Bush、Brian A. Droz、Thomas A. Fey、Victoria E. Knourek-Segel、Robin Shapiro、Peer B. Jacobson、David W. A. Beno、Teresa M. Turner、Hing L. Sham、Gang Liu
DOI:10.1021/jm060461g
日期:2006.7.1
pharmacological evaluation of potent, selective, and orally bioavailable growth hormone secretagogue receptor (GHS-R) antagonists are reported. Previously, 2,4-diaminopyrimidine-based GHS-R antagonists reported from our laboratories have been shown to be dihydrofolate reductase (DHFR) inhibitors. By comparing the X-ray crystal structure of DHFR docked with our GHS-R antagonists and GHS-R modeling, we designed
报道了有效的,选择性的和口服生物利用的生长激素促分泌素受体(GHS-R)拮抗剂的发现和药理评估。以前,我们实验室报告的基于2,4-二氨基嘧啶的GHS-R拮抗剂已被证明是二氢叶酸还原酶(DHFR)抑制剂。通过比较与我们的GHS-R拮抗剂对接的DHFR的X射线晶体结构和GHS-R建模,我们设计并合成了一系列具有良好药代动力学(PK)特性的有效和DHFR选择性GHS-R拮抗剂。酰胺衍生物13d(在大鼠8小时内,Ca2 +通量IC50 = 188 nM,[大脑] / [血浆] = 0.97)在大鼠24小时内的食物摄入量减少了10%,在14-饮食诱导的肥胖(DIO)小鼠的每日口服治疗。相比之下,尿素衍生物14c(Ca2 +通量IC50 = 7 nM,在DIO模型中,[大脑] / [血浆] = 0.0)未能显示出对食物摄入的显着影响。这些观察首次证明,用小分子GHS-R拮抗剂阻断外周GHS-R可能不足以抑制食欲并引起体重减轻。