Pyridofuran substituted pyrimidine derivatives as HCV replication (replicase) inhibitors
作者:Frank Bennett、Hollis S. Kezar、Vinay Girijavallabhan、Yuhua Huang、Regina Huelgas、Randall Rossman、Neng-Yang Shih、John J. Piwinski、Malcolm MacCoss、Cecil D. Kwong、Jeremy L. Clark、Anita T. Fowler、Feng Geng、Abhijit Roychowdhury、Robert C. Reynolds、Joseph A. Maddry、Subramaniam Ananthan、John A. Secrist、Cheng Li、Robert Chase、Stephanie Curry、Hsueh-Cheng Huang、Xiao Tong、F. George Njoroge、Ashok Arasappan
DOI:10.1016/j.bmcl.2012.06.021
日期:2012.8
Introduction of nitrogen atom into the benzene ring of a previously identified HCV replication (replicase) benzofuran inhibitor 2, resulted in the discovery of the more potent pyridofuran analogue 5. Subsequent introduction of small alkyl and alkoxy ligands into the pyridine ring resulted in further improvements in replicon potency. Replacement of the 4-chloro moiety on the pyrimidine core with a methyl group, and concomitant monoalkylation of the C-2 amino moiety resulted in the identification of several inhibitors with desirable characteristics. Inhibitor 41, from the monosubstituted pyridofuran and inhibitor 50 from the disubstituted series displayed excellent potency, selectivity (GAPDH/MTS CC50) and PK parameters in all species studied, while the selectivity in the thymidine incorporation assay (DNA.CC50) was low. (C) 2012 Elsevier Ltd. All rights reserved.