Abstract:
:Amantadine inhibits the M2 proton channel of influenza A virus, yet its clinical use has been limited by the rapid emergence of amantadine-resistant virus strains. We have synthesized and characterized a series of polycyclic compounds designed as ring-contracted or ring-expanded analogues of amantadine. Inhibition of the wild-type (wt) M2 channel and the A/M2-S31N and A/M2-V27A mutant ion channels were measured in Xenopus oocytes using two-electrode voltage clamp (TEV) assays. Several bisnoradamantane and noradamantane derivatives inhibited the wt ion channel. The compounds bind to a primary site delineated by Val27, Ala30, and Ser31, though ring expansion restricts the positioning in the binding site. Only the smallest analogue 8 was found to inhibit the S31N mutant ion channel. The structure-activity relationship obtained by TEV assay was confirmed by plaque reduction assays with A/H3N2 influenza virus carrying wt M2 protein.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Duque MD,Ma C,Torres E,Wang J,Naesens L,Juárez-Jiménez J,Camps P,Luque FJ,DeGrado WF,Lamb RA,Pinto LH,Vázquez Sdoi
10.1021/jm101334ysubject
Has Abstractpub_date
2011-04-28 00:00:00pages
2646-57issue
8eissn
0022-2623issn
1520-4804journal_volume
54pub_type
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