Abstract:
:Adenoviruses are responsible for a broad range of clinical diseases that may be associated with high mortality, including pneumonia, hepatitis, encephalitis, hemorrhagic cystitis, nephritis, and gastroenteritis in immunocompromised patients, including HIV-infected individuals. Here we report the identification of halo-substituted stavudine phenyl phosphoramidate derivatives as a new class of dual-function anti-HIV agents with potent and selective anti-adenovirus (ADV) activity. We examined the investigational stavudine phenyl phosphoramidate derivative stampidine and 12 structurally similar stavudine derivatives for anti-ADV activity. All 13 derivatives of stavudine, including stampidine, were substantially more potent than stavudine and inhibited ADV-induced plaque formation at nanomolar IC(50) values. Compounds with halo substitutions in the phenyl ring as well as the unsubstituted compound 607 were more potent than compounds with methoxy, methyl, or cyano substitutions. Compound 113 (stampidine) with a 4-Br substitution and compound 609 with a 4-Cl substitution were identified as the most potent lead anti-ADV agents. Compound 113/Stampidine inhibited ADV-induced plaque formation in skin fibroblasts in a concentration-dependent fashion with a mean (+/-S.E.M.) IC(50) value of 17 +/- 2 nM without any evidence of cytotoxicity even at 100 microM. Similarly, compound 609 inhibited ADV-induced plaque formation with an IC(50) value of 27 +/- 3 nM. We next sought to determine if the lead compounds 113 and 609 can also inhibit other viruses. Both compounds exhibited potent anti-HIV activity at nanomolar concentrations. However, neither compound exhibited any antiviral activity against non-HIV viruses, including Cytomegalovirus (CMV), Type I or Type II herpes simplex viruses (HSV-1, HSV-2), enterovirus ECHO 30, or respiratory syncytial virus (RSV) (IC(50) > 100 microM). The remarkable anti-ADV potency of the lead compounds stampidine and compound 609 warrants the further development of these promising new antiviral agents for possible clinical use in ADV infected patients.
journal_name
Eur J Med Chemjournal_title
European journal of medicinal chemistryauthors
Uckun FM,Pendergrass S,Qazi S,Samuel P,Venkatachalam TKdoi
10.1016/j.ejmech.2003.12.002subject
Has Abstractpub_date
2004-03-01 00:00:00pages
225-34issue
3eissn
0223-5234issn
1768-3254pii
S0223523403002307journal_volume
39pub_type
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