title: Monophosphates and cyclic phosphates of some antiviral acyclonucleosides: synthesis, conformation and substrate/inhibitor properties in some enzyme systems.
abstract: Chemical and enzymatic procedures are described for the synthesis of the monophosphates and cyclic phosphates of the antiviral acyclonucleoside 9-(1,3-dihydroxy-2-propoxymethyl)-guanine (DHPG), its 3-hydroxymethyl-4-hydroxybutyl analogue, the (R)- and (S)-epimers of 9-(3,4-dihydroxybutyl)guanine, and 9-(2,3-dihydroxypropyl)guanine. The structures, and some conformational features, of all the foregoing, were determined by 1H and 31P NMR spectroscopy. Their substrate/inhibitor properties have been examined in several enzyme systems, including ribonucleases, snake venom phosphodiesterase, beef heart and higher plant cyclic nucleotide phosphodiesterases, nuclease P1, and 3'- and 5'-nucleotidases. The enzymatic results are considered in relation to the mechanism of the antiviral activity of the cyclic phosphate of DHPG.
authors.affiliation: Department of Biophysics, University of Warsaw, Poland.
authors.forename: R
authors.initials: R
authors.lastname: Stolarski
authors.forename: J M
authors.initials: JM
authors.lastname: Ciesla
authors.forename: D
authors.initials: D
authors.lastname: Shugar
mesh_terms: D000998:Antiviral Agents / Q000138:chemical synthesis*; D006867:Hydrolases / Q000037:antagonists & inhibitors*; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D008968:Molecular Conformation; D009705:Nucleosides / Q000494:pharmacology; D009708:Nucleotidases / Q000037:antagonists & inhibitors; D009711:Nucleotides / Q000138:chemical synthesis* / Q000494:pharmacology; D010726:Phosphodiesterase Inhibitors; D010766:Phosphorylation; D013329:Structure-Activity Relationship
chemical_list: D000998:Antiviral Agents; D009705:Nucleosides; D009711:Nucleotides; D010726:Phosphodiesterase Inhibitors; D006867:Hydrolases; D009708:Nucleotidases