An in vitro assay based on the expression of Fluci reporter gene under the
translational control of HCV IRES was used to evaluate and screen compound
libraries. A structure-activity relationship study on a phenazine kit was c
onducted. Our data suggest that an intact phenazine or phenazine-like core
with two distal polar substitutions is crucial for potency. (C) 2000 Elsevi
er Science Ltd. All rights reserved.