The discovery and structure-activity relationships of pyrano[3,4-b]indole based inhibitors of hepatitis C virus NS5B polymerase.

Abstract We describe the structure–activity relationship of the C7-position of pyrano[3,4- b ]indole-based inhibitors of HCV NS5B polymerase. Further exploration of the allosteric binding site led to the discovery of the significantly more potent compounds 13 and 14 .