A compound in combination with a pharmaceutically acceptable carrier, the compound having a formula: wherein: R1 is a member of the group consisting of hydrogen, halogen, nitro, benzo, lower alkyl, phenyl, and lower alkoxy； R2 is a member of the group consisting of hydroxy, acetoxy, and lower alkoxy； and R3 is a member of the group consisting of hydrogen and lower alkenoxy-carbonyl； and n is either 1 or 2； and pharmaceutically acceptable salts thereof； for use in treatment of or prevention of skeletal muscle fibrosis and/or for inducing skeletal muscle regeneration.
