title: New antiretroviral drugs.
abstract: Despite the availability of 16 antiretroviral drugs approved for the treatment of HIV infection, current combination regimens present challenges. Newer antiretroviral drugs are needed to improve convenience, reduce toxicity and, of particular importance, to provide antiretroviral activity against viral strains resistant to the currently available antiretroviral agents. Candidate drugs with novel properties are in development in the two currently available drug classes: HIV reverse transcriptase inhibitors (nucleoside analogs, non-nucleoside analogs and nucleotide analogs) and HIV protease inhibitors (PI). Investigational nucleoside analog reverse transcriptase inhibitors (nRTI) include emtricitabine (FTC) and amdoxovir (DAPD), and investigational non-nucleoside reverse transcriptase inhibitors (NNRTI) include DPC 083 and TMC 125. New protease inhibitors under investigation include atazanavir (BMS-232 632), tipranavir, and TMC 114. In addition, newer agents with novel mechanisms of action such as HIV entry inhibitors (that inhibit the three steps of HIV entry: CD4 attachment, chemokine receptor binding and membrane fusion) and HIV integrase inhibitors are under investigation. Investigational entry inhibitors include PRO 542 (a CD4 attachment inhibitor), Schering C (a chemokine receptor inhibitor), enfuvirtide (T-20) and T-1249, inhibitors of membrane fusion. Investigational HIV integrase inhibitors include S-1360. Continued progress in the treatment of HIV disease will result from the development of new antiretroviral drugs.
authors.affiliation: Cornell HIV Clinical Trials Unit, Division of International Medicine and Infectious Diseases, Weill Medical College of Cornell University, New York, New York 10024, USA. rgulick@med.cornell.edu
authors.forename: R M
authors.initials: RM
authors.lastname: Gulick
mesh_terms: D019380:Anti-HIV Agents / Q000737:chemistry / Q000494:pharmacology*; D015195:Drug Design; D004359:Drug Therapy, Combination; D023581:HIV Fusion Inhibitors / Q000737:chemistry / Q000494:pharmacology*; D015658:HIV Infections / Q000188:drug therapy / Q000821:virology; D019428:HIV Integrase Inhibitors / Q000737:chemistry / Q000494:pharmacology*; D017320:HIV Protease Inhibitors / Q000737:chemistry / Q000494:pharmacology*; D015497:HIV-1 / Q000187:drug effects; D006801:Humans; D018894:Reverse Transcriptase Inhibitors / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D019380:Anti-HIV Agents; D023581:HIV Fusion Inhibitors; D019428:HIV Integrase Inhibitors; D017320:HIV Protease Inhibitors; D018894:Reverse Transcriptase Inhibitors