Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1378461 | Bioorganic & Medicinal Chemistry Letters | 2007 | 5 Pages |
We examined whether the incorporation of a second amino group into the 1-aminoethyl pharmacophore of rimantadine 2 and into the piperidine pharmacophore of the heterocyclic rimantadine 4 was compatible with anti-influenza virus A activity. The new synthetic molecules are capable of forming two hydrogen bonds within the receptor. We identified molecules 8 and 16, bearing the adamantyl and 1,2-diaminoethyl groups, which are equipotent to rimantadine 2 bearing the adamantyl and 1-aminoethyl pharmacophore groups. Interestingly, diamino compound 16 is a 4-fold more potent inhibitor than its parent monoamino heterocyclic rimantadine 4 propably because of additional hydrogen bonding interactions with the M2 protein receptor.
Graphical abstractThe anti-influenza A (H3N2) virus potency of the diamino rimantadine analogues 8 and 16 compared to the activities of the rimantadine 2 and the heterocyclic rimantadine 4 is probably due to additional hydrogen bonding interactions with the M2 protein receptor.Figure optionsDownload full-size imageDownload as PowerPoint slide