84545-00-6Relevant articles and documents
Pharmacophore-Based Design of Phenyl-[hydroxycyclohexyl] Cycloalkyl-Carboxamide Mitofusin Activators with Improved Neuronal Activity
Bernstein, Peter R.,Dang, Xiawei,Devanathan, Sriram,Dorn, Gerald W.,Franco, Antonietta,Fu, Lijun,Walters, Daniel,Williams, Sidney B.
, p. 12506 - 12524 (2021/09/11)
Mitochondrial fragmentation from defective fusion or unopposed fission contributes to many neurodegenerative diseases. Small molecule mitofusin activators reverse mitochondrial fragmentation in vitro, promising a novel therapeutic approach. The first-in-c
Conformational Restriction and Enantioseparation Increase Potency and Selectivity of Cyanoguanidine-Type Histamine H4 Receptor Agonists
Geyer, Roland,Nordemann, Uwe,Strasser, Andrea,Wittmann, Hans-Joachim,Buschauer, Armin
, p. 3452 - 3470 (2016/05/19)
2-Cyano-1-[4-(1H-imidazol-4-yl)butyl]-3-[2-(phenylsulfanyl)ethyl]guanidine (UR-PI376, 1) is a potent and selective agonist of the human histamine H4 receptor (hH4R). To gain information on the active conformation, we synthesized analogues of 1 with a cyclopentane-1,3-diyl linker. Affinities and functional activities were determined at recombinant hHxR (x: 1-4) subtypes on Sf9 cell membranes (radioligand binding, [35S]GTPγS, or GTPase assays) and in part in luciferase assays on human or mouse H4R (HEK-293 cells). The most potent H4R agonists among 14 racemates were separated by chiral HPLC, yielding eight enantiomerically pure compounds. Configurations were assigned based on X-ray structures of intermediates and a stereocontrolled synthetic pathway. (+)-2-Cyano-1-{[trans-(1S,3S)-3-(1H-imidazol-4-yl)cyclopentyl]methyl}-3-[2-(phenylsulfanyl)ethyl]guanidine ((1S,3S)-UR-RG98, 39a) was the most potent H4R agonist in this series (EC50 11 nM; H4R vs H3R, >100-fold selectivity; H1R, H2R, negligible activities), whereas the optical antipode proved to be an H4R antagonist ([35S]GTPγS assay). MD simulations confirmed differential stabilization of the active and inactive H4R state by the enantiomers.
Enantioselective synthesis of (+) and (-)-cis-3-aminocyclopentanecarboxylic acids by enzymatic asymmetrization
Chenevert,Martin
, p. 199 - 200 (2007/10/02)
Both enantiomers of cis-3-aminocyclopentanecarboxylic acid (GABA analogs, inhibitory neurotransmitter) have been prepared via enzymatic asymmetrization of cis -1,3-cyclopentanedicarboxylic acid.