Synthesis of substituted diarylmethylenepiperidines (DAMPs), a novel class of anti-HIV agents
作者:Guozhang Xu、Arunachalam Kannan、Tracy L Hartman、Heather Wargo、Karen Watson、Jim A Turpin、Robert W Buckheit、Allison A Johnson、Yves Pommier、Mark Cushman
DOI:10.1016/s0968-0896(02)00095-0
日期:2002.8
Substituted diarymethylenepiperidines (DAMPs) were synthesized as conformationally restricted analogues of the alkenyldiarylmethane (ADAM) class of non-nucleoside reverse transcriptase inhibitors (NNRTIs). Although, like the ADAMs, the DAMPs were found to inhibit the cytopathic effect of HIV-1(RF) in CEM-SS cells, they were completely inactive as inhibitors of HIV-1 reverse transcriptase. The DAMPs were assessed for inhibition of HIV attachment and fusion. DAMP 14 was active in both assays with IC50 values of 26.5 muM (TI 3.8) and 12.1 muM (TI: > 8), respectively. DAMP 15 also inhibited HIV fusion with all IC50 12.8 muM (TI: > 6), but not virus attachment. However, attempts to verity inhibition of virus attachment and fusion as antiviral targets using time-of-addition experiments failed to confirm these observations, and instead identified all antiviral target Occurring after completion of reverse transcription. DAMPs 11, 12, 14, and 15 were found to inhibit virus replication if added 8 h post virus exposure, and DAMP 11 was equipotent at inhibition of virus replication if added 24 It after Virus addition. DAMPs 11, 12, and 15 did not inhibit virus replication in TNF-alpha induced latently infected U1 cells, a model for post-integrative antiviral targets. When tested in both 3' end-processing and strand-transfer assays in the presence of HIV-1 integrase. none of the DAMPs showed any inhibitory activity, indicating that HIV-1 integrase is not involved in the mechanism of the antiviral action. Thus, the DAMPs are novel conformationally restricted analogues of the previously published ADAM series with all unidentified antiviral target bounded by the completion of reverse transcription and virus integration. (C) 2002 Elsevier Science Ltd. All rights reserved.