Abstract:
:Acetylcholinesterase (AChE), a key enzyme in the central and peripheral nervous systems, is the principal target of organophosphorus nerve agents. Quaternary oximes can regenerate AChE activity by displacing the phosphyl group of the nerve agent from the active site, but they are poorly distributed in the central nervous system. A promising reactivator based on tetrahydroacridine linked to a nonquaternary oxime is also an undesired submicromolar reversible inhibitor of AChE. X-ray structures and molecular docking indicate that structural modification of the tetrahydroacridine might decrease inhibition without affecting reactivation. The chlorinated derivative was synthesized and, in line with the prediction, displayed a 10-fold decrease in inhibition but no significant decrease in reactivation efficiency. X-ray structures with the derivative rationalize this outcome. We thus show that rational design based on structural studies permits the refinement of new-generation pyridine aldoxime reactivators that may be more effective in the treatment of nerve agent intoxication.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Santoni G,de Sousa J,de la Mora E,Dias J,Jean L,Sussman JL,Silman I,Renard PY,Brown RCD,Weik M,Baati R,Nachon Fdoi
10.1021/acs.jmedchem.8b00592subject
Has Abstractpub_date
2018-09-13 00:00:00pages
7630-7639issue
17eissn
0022-2623issn
1520-4804journal_volume
61pub_type
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