Cyclic monophosphate prodrugs of base-modified 2′-C-methyl ribonucleosides as potent inhibitors of hepatitis C virus RNA replication
摘要:
A new series of heterobase-modified 2 '-C-methyl ribonucleosides was synthesized and tested as inhibitors of hepatitis C virus (HCV) RNA replication. The nucleosides showed a weak inhibitory activity in a HCV replicon system (EC50 = 92 mu M) and did not exhibit any cytotoxicity (CC50 > 300 mu M). Cyclic monophosphate (cMP) prodrugs of the same nucleosides were synthesized and also tested in the HCV replicon system. Prodrugs exhibited strong potency (EC50 = 0-008)mu M) without significant cytotoxicity (CC50 > 50 mu M). (C) 2007 Elsevier Ltd. All rights reserved.
6-Hydrazinopurine 2′-methyl ribonucleosides and their 5′-monophosphate prodrugs as potent hepatitis C virus inhibitors
摘要:
A series of 6-hydrazinopurine 2 '-methyl ribonucleosides was synthesized and tested for its inhibitory activity against the hepatitis C virus (HCV). The lack of antiviral activity of these nucleosides was associated with a poor affinity for adenosine kinase, which prompted us to synthesize several of their 5 '-monophosphate prodrugs. Some of these prodrugs exhibited more than 1000-fold improvement in anti-HCV activity when compared to their parent nucleosides (EC50 of 24 mu M vs 92 mu M for the parent). (C) 2007 Elsevier Ltd. All rights reserved.
A series of 6-hydrazinopurine 2 '-methyl ribonucleosides was synthesized and tested for its inhibitory activity against the hepatitis C virus (HCV). The lack of antiviral activity of these nucleosides was associated with a poor affinity for adenosine kinase, which prompted us to synthesize several of their 5 '-monophosphate prodrugs. Some of these prodrugs exhibited more than 1000-fold improvement in anti-HCV activity when compared to their parent nucleosides (EC50 of 24 mu M vs 92 mu M for the parent). (C) 2007 Elsevier Ltd. All rights reserved.
Cyclic monophosphate prodrugs of base-modified 2′-C-methyl ribonucleosides as potent inhibitors of hepatitis C virus RNA replication
作者:Esmir Gunic、Jean-Luc Girardet、Kanda Ramasamy、Vesna Stoisavljevic-Petkov、Suetying Chow、Li-Tain Yeh、Robert K. Hamatake、Anneke Raney、Zhi Hong
DOI:10.1016/j.bmcl.2007.02.030
日期:2007.5
A new series of heterobase-modified 2 '-C-methyl ribonucleosides was synthesized and tested as inhibitors of hepatitis C virus (HCV) RNA replication. The nucleosides showed a weak inhibitory activity in a HCV replicon system (EC50 = 92 mu M) and did not exhibit any cytotoxicity (CC50 > 300 mu M). Cyclic monophosphate (cMP) prodrugs of the same nucleosides were synthesized and also tested in the HCV replicon system. Prodrugs exhibited strong potency (EC50 = 0-008)mu M) without significant cytotoxicity (CC50 > 50 mu M). (C) 2007 Elsevier Ltd. All rights reserved.