92109-03-0Relevant articles and documents
Mechanisms of action of novel influenza A/M2 viroporin inhibitors derived from hexamethylene amiloride
Jalily, Pouria H.,Eldstrom, Jodene,Miller, Scott C.,Kwan, Daniel C.,Tai, Sheldon S.-H.,Chou, Doug,Niikura, Masahiro,Tietjen, Ian,Fedida, David
supporting information, p. 80 - 95 (2016/07/28)
The increasing prevalence of influenza viruses with resistance to approved antivirals highlights the need for new anti-influenza therapeutics. Here we describe the functional properties of hexamethylene amiloride (HMA)'derived compounds that inhibit the wildtype and adamantane-resistant forms of the influenza A M2 ion channel. For example, 6-(azepan-1-yl)-N-carbamimidoylnicotinamide (9) inhibits amantadine-sensitive M2 currents with 3- to 6-fold greater potency than amantadine or HMA (IC50 5 0.2 vs. 0.6 and 1.3 μM, respectively). Compound 9 competes with amantadine for M2 inhibition, and molecular docking simulations suggest that 9 binds at site(s) that overlap with amantadine binding. In addition, tert-butyl 4′-(carbamimidoylcarbamoyl)-2′,3-dinitro- [1,1′-biphenyl]-4-carboxylate (27) acts both on adamantanesensitive and a resistantM2variant encoding a serine to asparagine 31 mutation (S31N) with improved efficacy over amantadine and HMA (IC5050.6 μMand4.4mM, respectively).Whereas 9 inhibited in vitro replication of influenza virus encoding wild-type M2 (EC505 2.3 μM), both 27 and tert-butyl 4′-(carbamimidoylcarbamoyl)-2′,3- dinitro-[1,1′-biphenyl]-4-carboxylate (26) preferentially inhibited viruses encoding M2(S31N) (respective EC50 5 18.0 and 1.5 μM). This finding indicates thatHMAderivatives can be designed to inhibit viruses with resistance to amantadine. Our study highlights the potential of HMA derivatives as inhibitors of drug-resistant influenza M2 ion channels.
OXADIAZOLE DIARYL COMPOUNDS
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Page/Page column 58-59, (2009/05/29)
The invention relates to compounds of formula (I): wherein R1, R2, Ra , Rb,Rc and W, have the meanings given in claim 1. The compounds are useful e.g. in the treatment of autoimmune disorders, such as multiple sclerosis.