HIV-1 inhibitor-6 (compound 9), a diheteroarylamide-based compound, is a potent HIV-1 pre-mRNA alternative splicing inhibitor. HIV-1 inhibitor-6 blocks HIV replication. HIV-1 inhibitor-6 is active against wild-type HIV-1IIIB (subtype B, X4-tropic) and HIV-1 97USSN54 (subtype A, R5-tropic) with EC50s of 0.6 μM and 0.9 μM, respectively. HIV-1 inhibitor-6 inhibits HIV strains resistant to drugs targeting HIV reverse transcriptase, protease, integrase, and coreceptor CCR5 with EC50s ranging from 0.9 to 1.5 μM[1].
[1]. Peter K Cheung, et al. A Parallel Synthesis Approach to the Identification of Novel Diheteroarylamide-Based Compounds Blocking HIV Replication: Potential Inhibitors of HIV-1 Pre-mRNA Alternative Splicing. J Med Chem. 2016 Mar 10;59(5):1869-79.