| Title:  Penciclovir CAS Registry Number:  39809-25-1 CAS Name:  2-Amino-1,9-dihydro-9-[4-hydroxy-3-(hydroxymethyl)butyl]-6H-purin-6-one Additional Names:  9-[4-hydroxy-3-(hydroxymethyl)but-1-yl]guanine;  PCV Manufacturers' Codes:  BRL-39123 Trademarks:  Denavir (SKB);  Vectavir (SKB) Molecular Formula:  C10H15N5O3 Molecular Weight:  253.26 Percent Composition:  C 47.42%, H 5.97%, N 27.65%, O 18.95% Literature References:  Carba analog of ganciclovir, q.v., active against several herpes viruses.  Prepn:  U. K. Pandit et al., Synth. Commun. 2, 345 (1972); R. L. Jarvest, M. R. Harnden, US 5075445 (1991 to Beecham).  Synthesis:  M. R. Harnden et al., J. Med. Chem. 30, 1636 (1987); J. Hannah et al., J. Heterocycl. Chem. 26, 1261 (1989).  Crystal and molecular structures:  M. R. Harnden et al., Nucleosides Nucleotides 9, 499 (1990).  In vitro activity of enantiomers in comparison with acyclovir, q.v.:  G. Abele et al., Antiviral Chem. Chemother. 2, 163 (1991); against herpes simplex viruses:  A. Weinberg et al., Antimicrob. Agents Chemother. 36, 2037 (1992).  Clinical pharmacokinetics:  S. E. Fowles et al., Eur. J. Clin. Pharmacol. 43, 513 (1992).  HPLC determn in plasma and urine:  J. R. McMeekin et al., Anal. Proc. 29, 178 (1992).  Review of development and antiviral activity:  M. R. Harnden, Drugs Future 14, 347-358 (1989). Properties:  White crystalline solid from water, (monohydrate), mp 275-277°; also reported as colorless matted needles, mp 272-275°.  uv max (in water):  253 nm (e 11500).  uv max (aq 0.01N NaOH): 215, 268 nm (e 18140, 10710).  Sol in water (20°): 1.7 mg/ml, pH 7. Melting point:  mp 275-277°; mp 272-275° Absorption maximum:  uv max (in water):  253 nm (e 11500); uv max (aq 0.01N NaOH): 215, 268 nm (e 18140, 10710)   Derivative Type:  Sodium salt  Manufacturers' Codes:  BRL-39123A Properties:  Occurs as monohydrate, stable crystalline solid.  Sol in water (20°): >200 mg/ml.  30 mg/ml soln has pH 11.   Therap-Cat:  Antiviral. Keywords:  Antiviral; Purines/Pyrimidinones.  |