Patent ID: 8653115

Claim:
A heterocyclic non-nucleoside compound represented by the following structure formula: wherein each R 5 and R 6 independently is hydrogen atom, halogen atom, or phenyl; R 2 is linear or branched C 1 -C 8 alkyl, C 3 -C 8 cycloalkyl or benzyl; R 3 is one selected from the group consisting of C 1 -C 6 hydroxyalkyl; C 1 -C 4 alkyl substituted by C 1 -C 4 alkoxycarbonyl; C 2 -C 4 alkenyl substituted by C 1 -C 4 alkoxycarbonyl; wherein each R′ and R″ independently is selected from the group consisting of halogenated C 1 -C 10 alkyl, halogenated benzyl, benzyl substituted by C 1 -C 10 alkyl, benzyl substituted by C 1 -C 10 alkoxyl, benzyl substituted by C 1 -C 10 alkylamino group, benzyl substituted by nitrile group, benzyl substituted by carboxyl, and benzyl substituted by C 1 -C 10 alkyloxycarbonyl.