Design, Synthesis, and Potent Antiepileptic Activity with Latent Nerve Rehabilitation of Novel γ-Aminobutyric Acid Derivatives
作者:Dian He、Jing Ma、Xiuxiao Shi、Chunyan Zhao、Meng Hou、Qingxin Guo、Shangxian Ma、Xiaojun Li、Peicheng Zhao、Wenhu Liu、Zhuqing Yang、Jianping Mou、Pengfei Song、Yang Zhang、Jing Li
DOI:10.1248/cpb.c14-00329
日期:——
We aimed to design and synthesize novel γ-aminobutyric acid (GABA) derivatives with the combination of aspirin (ASA) of nerve rehabilitative pharmacophores so as to develop multifunctional drugs useful in the treatment of neurological disorders. Twenty-four novel esters and amides of 1a were synthesized, biologically evaluated for antiepileptic activity with the model of 4-aminopyridine (4-AP), and tested for their capacity of penetrating the blood–brain barrier (BBB) with HPLC. The distribution of 8a, ASA freed by 8a, 7c, and ASA freed by 7c within 24 h in brain tissue was measured. The structure–activity relationship (SAR) was established and the data of Computer Aided Drug Design (CADD) showed good results. With ED50 values of 0.3684–0.5199 mmol/kg, LD50 1.1487–1.3944 mmol/kg, and therapeutic index (TI) 2.65–3.15, compounds 8a, 3b, 4b, 6c, and 7c exhibited better antiepileptic activities in multiples of 0.3 to 2.2 against the control sodium valproate (VPA). Most importantly, 8a and 7c exhibited excellent antiepileptic activities with TI values of 3.15 and 3.12, respectively.
我们的目标是设计和合成新型的γ-氨基丁酸(GABA)衍生物,结合阿司匹林(ASA)的神经修复药效基团,以开发用于治疗神经系统疾病的多功能药物。合成了24种新型酯和酰胺1a,通过4-氨基吡啶(4-AP)模型进行生物学评估以确定其抗癫痫活性,并使用高效液相色谱法测试其穿越血脑屏障(BBB)的能力。测量了8a、8a释放的ASA、7c以及7c释放的ASA在24小时内在大脑组织中的分布。建立了构效关系(SAR),计算机辅助药物设计(CADD)的数据显示良好结果。化合物8a、3b、4b、6c和7c的ED50值为0.3684–0.5199 mmol/kg,LD50为1.1487–1.3944 mmol/kg,治疗指数(TI)为2.65–3.15,这些化合物显示出比对照药物丙戊酸钠(VPA)高出0.3至2.2倍的抗癫痫活性。最重要的是,8a和7c分别显示出优异的抗癫痫活性,TI值分别为3.15和3.12。