Design, synthesis, and characterization of novel, nonquaternary reactivators of GF-inhibited human acetylcholinesterase

The goal of this research was to identify structurally novel, non-quaternarypyridinium reactivators of GF (cyclosarin)-inhibited hAChE that possess the capacity to mediate in vitro reactivation of GF-inhibited human acetylcholinesterase (hAChE). New compounds were designed, synthesized and assessed in GFinhibited hAChE assays. Structure activity relationships for AChE binding and reactivation of GF-inhibited hAChE were developed. Lead compounds from two different chemical series, represented by compounds 17 and 38, displayed proficient in vitro reactivation of GF- inhibited hAChE, while also possessing low inhibition of native enzyme. (c) 2014 Elsevier Ltd. All rights reserved.