Synthesis of Highly Functionalised Dispiropyrrolidine Derivatives as Novel Acetylcholinesterase Inhibitors
作者:Ang Chee Wei、Mohamed Ashraf Ali、Yeong Keng Yoon、Rusli Ismail、Tan Soo Choon、Kooi-Yeong Khaw、Vikneswaran Murugaiyah、Venu Sanjeevi Lakshmipathi
DOI:10.2174/15701808113109990038
日期:2013.12.31
In the effort of finding novel acetyl cholinesterase (AChE) inhibitors to improve the efficacy of Alzheimer’s
disease (AD) treatment, series of substituted aryl-1´-methyldispiro[indan-2,2´ pyrrolidine-3´,2-indan]-1,3,1-trione and
substituted 7´-aryl-5´,6´,7´,7a´-tetrahydrodispiro-[indane-2,5´-pyrrolo[1,2-c][1,3]thiazole-6´,2-indan]-1,3,1-trione analogues
were synthesized using [3+2]-cycloaddition reactions. These newly synthesized pyrrolidine compounds were assayed
for their biological activity using Ellman’s method. The structural elucidation of the compounds was performed by
using 1H-NMR, 13C-NMR, ESI-MS spectra and elemental analyses. Eight out of twenty synthesized compounds showed
more than 50% inhibition at concentration of 10 µM. Compound 2e, 2i and 3e were among the most active one, giving
IC50 value as 3.3 M for 2e, 3.7 µM for 2i and 5.5 µM for 3e, respectively. Lineweaver-Burk plot indicated that 2i inhibits
AChE in a competitive manner. Molecular modelling study was performed to disclose the binding interaction of these
compounds with the active site of AChE.
为了寻找新型乙酰胆碱酯酶(AChE)抑制剂以提高阿尔茨海默病(AD)的疗效,一系列取代的芳基-1´-甲基二螺[茚-2,2´-吡咯烷-3´、2-茚满]-1,3,1-三酮和取代的 7´-芳基-5´,6´,7´,7a´-四氢二螺[茚满-2,5´-吡咯并[1,2-c][1,3]噻唑-6´,2-茚满]-1,3,1-三酮类似物。这些新合成的吡咯烷化合物采用埃尔曼法进行了生物活性检测。利用 1H-NMR、13C-NMR、ESI-MS 图谱和元素分析对这些化合物进行了结构阐释。在浓度为 10 µM 的 20 个合成化合物中,有 8 个化合物的抑制率超过 50%。其中,化合物 2e、2i 和 3e 的活性最高,其 IC50 值分别为 3.3 M(2e)、3.7 µM(2i)和 5.5 µM(3e)。Lineweaver-Burk 图表明,2i 以竞争方式抑制 AChE。分子建模研究揭示了这些化合物与 AChE 活性位点的结合相互作用。