title: New alkenyldiarylmethanes with enhanced potencies as anti-HIV agents which act as non-nucleoside reverse transcriptase inhibitors.
abstract: Twenty-two new alkenyldiarylmethanes (ADAMs) were synthesized and evaluated for inhibition of HIV-1 replication. The most potent compound proved to be methyl 3',3"-dichloro-4',4"-dimethoxy-5', 5"-bis(methoxycarbonyl)-6,6-diphenyl-5-hexenoate (ADAM II), which displayed an EC50 of 13 nM for inhibition of the cytopathic effect of HIV-1RF in CEM-SS cells. ADAM II inhibited HIV-1 reverse transcriptase with an IC50 of 0.3 microM but was inactive as an inhibitor of HIV-1 attachment/fusion to cells, protease, integrase, and the nucleocapsid protein. Molecular target-based and cell-based assays revealed that ADAM II acted biologically as a nonnucleoside reverse transcriptase inhibitor (NNRTI). ADAM II inhibited replication of a wide variety of laboratory, clinical, and clade-representative isolates of HIV-1 in T cell lines and cultures of peripheral blood mononuclear cells or monocyte/macrophages. Mutations that conferred resistance to ADAM II clustered at residues 101, 103, 108, 139, 179, 181, and 188, which line the nonnucleoside binding pocket of HIV-1 reverse transcriptase. However, HIV-1 NL4-3 strain expressing a mutation at residue 100 of reverse transcriptase, and an AZT-resistant virus, displayed increased sensitivity to ADAM II. Thus, ADAM II could serve as an adjunct therapy to AZT and NNRTIs that select for L100I resistance mutations.
authors.affiliation: Department of Medicinal Chemistry and Molecular Pharmacology, School of Pharmacy and Pharmacal Sciences, Purdue University, West Lafayette, Indiana 47907, USA.
authors.forename: M
authors.initials: M
authors.lastname: Cushman
authors.forename: A
authors.initials: A
authors.lastname: Casimiro-Garcia
authors.forename: E
authors.initials: E
authors.lastname: Hejchman
authors.forename: J A
authors.initials: JA
authors.lastname: Ruell
authors.forename: M
authors.initials: M
authors.lastname: Huang
authors.forename: C A
authors.initials: CA
authors.lastname: Schaeffer
authors.forename: K
authors.initials: K
authors.lastname: Williamson
authors.forename: W G
authors.initials: WG
authors.lastname: Rice
authors.forename: R W
authors.initials: RW
authors.lastname: Buckheit
mesh_terms: D000473:Alkanes / Q000138:chemical synthesis / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology; D000818:Animals; D019380:Anti-HIV Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology; D001665:Binding Sites; D002208:Caproates / Q000138:chemical synthesis / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology; D002460:Cell Line; D003588:Cytopathogenic Effect, Viral / Q000187:drug effects; D004353:Drug Evaluation, Preclinical; D004352:Drug Resistance, Microbial; D054303:HIV Reverse Transcriptase / Q000235:genetics / Q000378:metabolism; D015497:HIV-1 / Q000187:drug effects* / Q000201:enzymology / Q000235:genetics / Q000502:physiology; D007963:Leukocytes, Mononuclear / Q000187:drug effects / Q000821:virology; D008264:Macrophages / Q000187:drug effects / Q000821:virology; D051379:Mice; D008958:Models, Molecular; D009154:Mutation; D018894:Reverse Transcriptase Inhibitors / Q000138:chemical synthesis / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology; D013329:Structure-Activity Relationship; D013601:T-Lymphocytes / Q000187:drug effects / Q000821:virology; D014779:Virus Replication / Q000187:drug effects; D015215:Zidovudine / Q000494:pharmacology
chemical_list: C112582:ADAM II; D000473:Alkanes; D019380:Anti-HIV Agents; D002208:Caproates; D018894:Reverse Transcriptase Inhibitors; D015215:Zidovudine; D054303:HIV Reverse Transcriptase