Design and synthesis of potent and selective pyridazin-4(1H)-one-based PDE10A inhibitors interacting with Tyr683 in the PDE10A selectivity pocket
作者:Masato Yoshikawa、Takenori Hitaka、Tomoaki Hasui、Makoto Fushimi、Jun Kunitomo、Hironori Kokubo、Hideyuki Oki、Kosuke Nakashima、Takahiko Taniguchi
DOI:10.1016/j.bmc.2016.05.049
日期:2016.8
having highly potent PDE10A inhibitory activity (IC50 = 0.76 nM) and perfect selectivity against other PDEs (>13,000-fold, IC50 = >10,000 nM). The crystal structure of 16f bound to PDE10A revealed that the benzimidazole moiety was located deep within the PDE10A selectivity pocket and interacted with Tyr683. Additionally, a bidentate interaction existed between the 5-alkoxypyridazin-4(1H)-one moiety and
利用基于结构的药物设计技术,我们设计和合成了基于哒嗪-4(1 H)-one的磷酸二酯酶10A(PDE10A)抑制剂。这些化合物可与PDE10A选择性口袋中的Tyr683相互作用。吡rid嗪-4(1 H)-一衍生物1通过烷基间隔基与苯并咪唑基团连接,与Tyr683的OH相互作用并填充PDE10A的选择性口袋。优化接头长度后,我们确定了1-(环丙基甲基)-5- [3-(1-甲基-1 H-苯并咪唑-2-基)丙氧基] -3-(1-苯基-1 H-吡唑-5- yl)pyridazin-4(1 H)-one(16f)具有强力的PDE10A抑制活性(IC 50 = 0.76 nM)和对其他PDE的完美选择性(> 13,000倍,IC 50 => 10,000 nM)。与PDE10A结合的16f晶体结构表明,苯并咪唑部分位于PDE10A选择性囊的深处,并与Tyr683相互作用。另外,在所有PDEs中存在的5-烷氧基哒嗪-4(1