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N-酰基噻唑類衍生物的合成及其對乙酰膽堿酯酶的抑制活性研究

發(fā)布時間:2018-04-03 12:32

  本文選題:阿爾茨海默病 切入點(diǎn):乙酰膽堿酯酶 出處:《河北大學(xué)》2014年碩士論文


【摘要】:阿爾茨海默病(AD)是一種慢性神經(jīng)退行性疾病,主要特征是認(rèn)知和記憶功能不斷惡化,日常生活能力減退,并有各種行為障礙。隨著世界人口老齡化加劇,AD的發(fā)病率逐年增高。目前臨床上主要是通過抑制劑抑制乙酰膽堿酯酶(AChE)的活性從而增加人體腦內(nèi)乙酰膽堿(ACh)的水平,,改善患者的認(rèn)知和記憶功能。 本文針對新的乙酰膽堿酯酶抑制劑的開發(fā),設(shè)計(jì)合成了14個新的2-氨基-4-苯基噻唑類化合物,通過核磁共振氫譜、質(zhì)譜、紅外光譜等對化合物進(jìn)行了結(jié)構(gòu)鑒定,并且對化合物初次進(jìn)行體外乙酰膽堿酯酶抑制活性實(shí)驗(yàn),其中8a表現(xiàn)出較好的AChE抑制活性,其IC50=3.54μmol/L。同時又設(shè)計(jì)合成了18個新的N-;-硫色烯并噻唑-2-胺類化合物,通過核磁共振氫譜、質(zhì)譜、紅外光譜等對化合物進(jìn)行了結(jié)構(gòu)鑒定,并且進(jìn)行了體外乙酰膽堿酯酶抑制活性試驗(yàn),21a的AChE抑制活性最好,IC50=7.92μmol/L。8a和21a的活性都優(yōu)于對照藥利斯的明。 為了研究化合物對乙酰膽堿酯酶的作用機(jī)制,對活性最好的化合物8a進(jìn)行了酶促動力學(xué)試驗(yàn),實(shí)驗(yàn)結(jié)果表明:該化合物是混合型競爭抑制類型,可能同時作用于AChE的兩個活性位點(diǎn)。
[Abstract]:Alzheimer's disease (AD) is a chronic neurodegenerative disease characterized by deterioration of cognitive and memory functions, decline in daily life, and various behavioral disorders.With the aging of the world population, the incidence of AD is increasing year by year.At present, the inhibition of acetylcholinesterase (ache) activity by inhibitors increases the level of acetylcholine choline (ache) in human brain and improves the cognitive and memory function of patients.In this paper, 14 new 2-amino-4-phenylthiazole compounds were designed and synthesized for the development of new acetylcholinesterase inhibitors. The structures of the compounds were identified by NMR, MS and IR spectra.The inhibitory activity of acetylcholinesterase was tested in vitro for the first time. The inhibitory activity of acetylcholinesterase (IC50=3.54 渭 mol / L) was better in 8 years.At the same time, 18 new N-acyl-thiolyl thiazole-2-amine compounds were designed and synthesized. The structures of the compounds were characterized by NMR, MS and IR spectra.The inhibitory activity of AChE for 21 years was better than that of Listigmine for 21 years. The inhibitory activity of IC50, 7. 92 渭 mol/L.8a and 21 a was superior to that of the control drug Listigmine, and the inhibitory activity of acetylcholinesterase in vitro was tested.In order to study the action mechanism of the compound on acetylcholinesterase, the best active compound 8a was tested by enzymatic kinetic test. The results showed that the compound was a mixed type of competitive inhibition.It may act on two active sites of AChE at the same time.
【學(xué)位授予單位】:河北大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:R914

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