Synthesis and kinetic analysis of some phosphonate analogs of cyclophostin as inhibitors of human acetylcholinesterase
作者:Supratik Dutta、Raj K. Malla、Saibal Bandyopadhyay、Christopher D. Spilling、Cynthia M. Dupureur
DOI:10.1016/j.bmc.2010.01.063
日期:2010.3
Two new monocyclic analogs of the natural AChE inhibitor cyclophostin and two exocyclic enol phosphates were synthesized. The potencies and mechanisms of inhibition of the bicyclic and monocyclic enol phosphonates and the exocyclic enol phosphates toward human AChE are examined. One diastereoisomer of the bicyclic phosphonate exhibits an IC50 of 3 μM. Potency is only preserved when the cyclic enol
合成了天然 AChE 抑制剂环磷蛋白的两种新单环类似物和两种环外烯醇磷酸酯。检查了双环和单环烯醇膦酸酯和环外烯醇磷酸酯对人 AChE 的抑制效力和机制。双环膦酸酯的一种非对映异构体的 IC 50为 3 μM。只有当环状烯醇膦酸酯完整并与酯结合时,才能保留效力。动力学分析表明所有活性化合物的结合和缓慢失活步骤。质谱分析表明活性位点 Ser 确实被双环膦酸酯磷酸化。