Identification of a Potent, Highly Selective, and Brain Penetrant Phosphodiesterase 2A Inhibitor Clinical Candidate
作者:Christopher J. Helal、Eric Arnold、Tracey Boyden、Cheng Chang、Thomas A. Chappie、Ethan Fisher、Mihaly Hajos、John F. Harms、William E. Hoffman、John M. Humphrey、Jayvardhan Pandit、Zhijun Kang、Robin J. Kleiman、Bethany L. Kormos、Che-Wah Lee、Jiemin Lu、Noha Maklad、Laura McDowell、Dina McGinnis、Rebecca E. O’Connor、Christopher J. O’Donnell、Adam Ogden、Mary Piotrowski、Christopher J. Schmidt、Patricia A. Seymour、Hirokazu Ueno、Nichole Vansell、Patrick R. Verhoest、Edward X. Yang
DOI:10.1021/acs.jmedchem.7b01466
日期:2018.2.8
direct the synthesis of analogs of previously reported phosphodiesterase 2A (PDE2A) inhibitor 1 with an imidazotriazine core to yield compounds of significantly enhanced potency. The analog PF-05180999 (30) was subsequently identified as a preclinical candidate targeting cognitive impairment associated with schizophrenia. Compound 30 demonstrated potent binding to PDE2A in brain tissue, dose responsive
计算模型用于指导以前报道的磷酸二酯酶2A(PDE2A)抑制剂1与咪唑三嗪核心的类似物的合成,以产生效力显着增强的化合物。随后将类似物PF-05180999(30)确定为靶向与精神分裂症相关的认知障碍的临床前候选药物。化合物30在脑组织中显示出与PDE2A的强力结合,剂量反应性小鼠脑cGMP增加以及N-甲基-d的逆转天门冬氨酸(NMDA)拮抗剂诱导的(MK-801,氯胺酮)作用在大鼠的电生理和工作记忆模型中。临床前药物代谢动力学显示未结合的脑/未结合的血浆水平接近统一和良好的口服生物利用度,从而导致在稳定状态(平均浓度Ç AV,SS),每天一次(QD)预测的30毫克人剂量。调释制剂的模型表明,每天两次25 mg(出价)可以维持24小时内达到或高于目标有效血浆水平30的血浆水平,这已成为人类临床计划的一部分。