Anti-influenza activity of diazaadamantanes combined with monoterpene moieties |
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Authors: | Evgeniy Suslov Vladimir V Zarubaev Alexander V Slita Konstantin Ponomarev Dina Korchagina Daniel M Ayine-Tora Jóhannes Reynisson Konstantin Volcho Nariman Salakhutdinov |
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Institution: | 1. Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia;2. Pasteur Institute of Epidemiology and Microbiology, 14 Mira Str., 197101 St. Petersburg, Russia;3. School of Chemical Sciences, University of Auckland, New Zealand;4. Novosibirsk State University, Pirogova 2, Novosibirsk 630090, Russian Federation |
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Abstract: | The antiviral activity of several diaza-adamantanes containing monoterpenoid moieties against a rimantadine-resistant strain of the influenza A/Puerto Rico/8/34 (H1N1) virus was studied. Hetero-adamantanes containing monoterpene moieties at the aminal position of the heterocycle were found to exhibit lower activity compared to compounds with a diaza-adamantane fragment and a monoterpene moiety linked via an amino group at the 6-position of the hetero-adamantane ring. The highest selectivity index (a ratio of the 50% cytotoxic concentration to the 50% inhibitory concentration) out of 30 was observed for compound 8d, which contains a citronellal monoterpenoid moiety. Diaza-adamantane 8d was superior to its adamantane-containing analog 5 both in its anti-influenza activity and selectivity. Furthermore, 8d has more balanced physicochemical properties than 5, making the former a more promising drug candidate. Modelling these compounds against an influenza virus M2 ion channel predicted plausible binding modes to both the wild-type and the mutant (S31N). |
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Keywords: | Diaza-adamantane Terpene Influenza Antivirals Citronellal Myrtenal |
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