A new class of pyrimidine nucleosides: inhibitors of hepatitis B and C viruses
摘要:
Hepatitis B virus (HBV) and hepatitis C virus (HCV) infections are major health threats worldwide leading to liver cirrhosis, liver cancer and mortality. Herein, we report a new category of dideoxy pyrimidine nucleosides possessing a 4'-carboxyl (or carboxymethyl) function (7-9, 13, 16, 17), which are discovered as potential antiviral agents. For the first time, these nucleosides are recognized to be inhibitors of HBV and/or HCV replication. Among 4'-carboxy compounds, 3',4'-didehydrothymidine (16) was most effective against DHBV, HBV and HCV. Modification of the 4'-position in compound 7 from a carboxyl to carboxymethyl group (17) did not affect the anti-HBV activity but greatly increased the anti-HCV activity. Importantly, 17 yielded synergistic antiviral effect when combined with ribavirin without toxicity. The activity exhibited by a single agent towards both hepatitis viruses and no detectable in vitro cytotoxicity make this new class of compounds of interest. (c) 2012 Elsevier Ltd. All rights reserved.
An efficient total synthesis of 3′-azido-3′-deoxythymidine (AZT) and 3′-azido-2′,3′-dideoxyuridine (AZDDU, CS-87) from D-mannitol
作者:Chung K Chu、J.Warren Beach、Giliyar V Ullas、Yoshiyuki Kosugi
DOI:10.1016/s0040-4039(00)82864-6
日期:——
An efficient stereoselective total synthesis of 3′-azido-3′-deoxythymidine (AZT) and 3′-azido-2′,3′-dideoxyuridine (AZDDU, CS-87) from readily available and inexpensive starting material, -mannitol has been achieved.