Searching for novel N1-substituted benzimidazol-2-ones as non-nucleoside HIV-1 RT inhibitors

Publication date: Available online 19 May 2017
Source:Bioorganic & Medicinal Chemistry
Author(s): Stefania Ferro, Maria Rosa Buemi, Laura De Luca, Fatima E. Agharbaoui, Christophe Pannecouque, Anna-Maria Monforte
Non-nucleoside reverse transcriptase inhibitors (NNRTIs) represent an integral part of the currently available combination antiretroviral therapy (cART) contributing to reduce the AIDS-mortality and turned the disease from lethal to chronic. In this context we recently reported a series of 6-chloro-1-(3-methylphenylsulfonyl)-1,3-dihydro-2Hbenzimidazol-2-ones as potent non-nucleoside HIV-1 reverse transcriptase inhibitors. In this paper, we describe the design and the synthesis of two novel series of benzimidazolone analogues in which the linker moiety between the phenyl ring and the sulfonyl group was modified and new small lipophilic groups on the benzyl sulfonyl pendant were introduced. All the new obtained compounds were evaluated as RT inhibitors and were also tested against RTs containing single amino acid mutations. Finally, molecular docking studies were performed in order to rationalize the observed activity of the most promising compound.

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