Synthesis, Modelling, and Anticonvulsant Studies of New Quinazolines Showing Three Highly Active Compounds with Low Toxicity and High Affinity to the GABA-A Receptor
作者:Mohamed Zayed、Saleh Ihmaid、Hany Ahmed、Khaled El-Adl、Ahmed Asiri、Abdelsattar Omar
DOI:10.3390/molecules22020188
日期:——
their binding affinities to the GABA-A receptor in order to rationalize their anticonvulsant activities in a qualitative way. The data obtained from the molecular modeling was correlated with that obtained from the biological screening. These data showed considerable anticonvulsant activity for all newly-synthesized compounds. Compounds 5b, 5c, and 5d showed the highest binding affinities toward the GABA-A
设计并合成了一些新颖的氟化喹唑啉(5a-j),以评估其抗惊厥活性和神经毒性。所有新合成的化合物的结构均通过其红外(IR),质谱(MS)光谱,1 H核磁共振(NMR),13C-NMR和元素分析(CHN)确认。抗惊厥活性通过皮下戊烯四唑(scPTZ)测试和最大电击(MES)诱发的癫痫发作测试进行评估,而神经毒性则通过旋翼机测试进行评估。对所有新合成的化合物进行分子对接,以评估它们与GABA-A受体的结合亲和力,从而以定性的方式合理化其抗惊厥活性。从分子模型获得的数据与从生物学筛选获得的数据相关。这些数据显示了对于所有新合成的化合物而言相当大的抗惊厥活性。化合物5b,5c和5d在实验小鼠中显示出对GABA-A受体的最高结合亲和力,以及最高的抗惊厥活性。与参考药物相比,这些化合物在中位致死剂量试验中还显示出低神经毒性和低毒性。对这些高活性化合物进行了GABA酶法测定,以确认获得的结果并解释抗惊厥作