New 4-N-phenylaminoquinoline derivatives as antioxidant, metal chelating and cholinesterase inhibitors for Alzheimer’s disease
作者:Rong Cai、Li-Ning Wang、Jing-Jing Fan、Shang-Qi Geng、Yu-Ming Liu
DOI:10.1016/j.bioorg.2019.103328
日期:2019.12
A series of new 4-N-phenylaminoquinoline derivatives were designed, synthesized, and their anticholinesterase activities, 1,1-Diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, metal-chelating ability were tested. Among them, compounds 11j, 11k and 11l had comparable inhibition activities to reference drug galantamine both in AChE and in BChE. Especially, compound 11j revealed the most potent
设计,合成了一系列新型的4- N-苯基氨基喹啉衍生物,并测试了它们的抗胆碱酯酶活性,1,1-二苯基-2-吡啶并肼基(DPPH)自由基清除活性,金属螯合能力。其中,化合物11j,11k和11l在AChE和BChE中均具有与参考药物加兰他敏相当的抑制活性。尤其是,化合物11j表现出对ee AChE和eq BChE的最强抑制作用,IC 50值分别为1.20μM和18.52μM。此外,对AChE抑制的动力学分析和分子对接研究均表明化合物11j是混合型抑制剂,同时与AChE的催化阴离子位点(CAS)和外围阴离子位点(PAS)结合,碘化丙啶置换试验表明,化合物11k(25.80%)将碘化丙啶从ee AChE的PAS中置换出。更重要的是,化合物11l表现出出色的DPPH自由基清除活性(1 mg / mL时为84%),其EC 50值为0.328μM。此外,化合物11a,11j,11k和11l对Al 3+,Fe