title: Synthesis and antiviral activity of 2'-deoxy-4'-thio purine nucleosides.
abstract: A series of 2'-deoxy-4'-thioribo purine nucleosides was prepared by trans-N-deoxyribosylase-catalyzed reaction of 2'-deoxy-4'-thiouridine with a variety of purine bases. This synthetic procedure is an improvement over methods previously used to prepare purine 4'-thio nucleosides. The compounds were tested against hepatitis B virus (HBV), human cytomegalovirus (HCMV), herpes simplex virus (HSV-1 and HSV-2), varicella zoster virus (VZV), and human immunodeficiency virus (HIV-1). Cytotoxicity was determined in a number of cell lines. Several compounds were extremely potent against HBV and HCMV and had moderate to severe cytotoxicity in vitro. The lead compound from the series, 2-amino-6-(cyclopropylamino)purine 2'-deoxy-4'-thioriboside, was the most potent and selective agent against HCMV and HBV replication in vitro; however, this analogue was nephrotoxic when tested in vivo.
authors.affiliation: Division of Experimental Therapy, Burroughs Wellcome Company, Research Triangle Park, North Carolina 27709, USA.
authors.forename: N A
authors.initials: NA
authors.lastname: Van Draanen
authors.forename: G A
authors.initials: GA
authors.lastname: Freeman
authors.forename: S A
authors.initials: SA
authors.lastname: Short
authors.forename: R
authors.initials: R
authors.lastname: Harvey
authors.forename: R
authors.initials: R
authors.lastname: Jansen
authors.forename: G
authors.initials: G
authors.lastname: Szczech
authors.forename: G W
authors.initials: GW
authors.lastname: Koszalka
mesh_terms: D000998:Antiviral Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects; D015497:HIV-1 / Q000187:drug effects; D006564:Herpesviridae / Q000187:drug effects; D006801:Humans; D011684:Purine Nucleosides / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D000998:Antiviral Agents; D011684:Purine Nucleosides