Patent ID: 8895725

Claim:
A method of treating a patient in need of a medicament for anti-hepatitis C virus, comprising administering to the patient a medicament comprising an effective amount of a 9,10-anthraquinone of Formula I: or a pharmaceutically acceptable salt thereof or a plant extract thereof: wherein Y 1 and Y 2 are independently hydrogen, hydroxyl or a group as shown in Formula II; R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 , are independently hydrogen, hydroxyl, carboxyl, cyano, nitryl, a group as shown in Formula III or one of the following groups with one or more substituent groups or unsubstituted; amino, C 1 ˜C 6 chain hydrocarbyl, C 3 -˜C 7 cyclic aliphatic hydrocarbyl, C 1 ˜C 6 alkoxy, C 2 ˜C 7 alkoxy carbonyl, C 1 ˜C 4 acyloxy, C 6 ˜C 20 aryl or 5˜7 members heterocyclic ring or benzohetercyclic ring thereof, wherein the one or more substituent groups are one or more selected from the group consisting of halogen, C 1 ˜C 6 chain hydrocarbyl, cyano, nitryl, amino, hydroxyl, carboxyl, C 1 ˜C 4 alkoxy, mercapto, C 1 ˜C 4 acyloxy and C 6 ˜C 20 aryl; or R 5 and R 6 form a ring as shown in Formula IV, with the proviso that the 9,10-anthraquinone of formula I excludes emodin, aloe-emodin, and daunorubicin.