Structure-activity relationship studies on anti-HCV activity of ring-expanded ('fat') nucleobase analogues containing the imidazo[4,5-e][1,3]diazepine-4,8-dione ring system

Continued SAR studies on anti-HCV activity of the title imidazo[4,5-e][1,3]diazepine ring system have been reported, focusing on hydrophobic substituents at the 2-position of the hetrocycle.