Patent ID: 8399662

Claim:
A compound of O-acyloxime represented by the following Formula 1, or a pharmaceutically acceptable salt thereof: wherein, R 1 is phenyl, heteroaryl, phenyl or heteroaryl substituted by one or more groups selected from the group consisting of halogen, C 1 -C 6 alkyl substituted by one or more halogen, C 6 -C 10 arylalkyl, C 6 -C 10 arylalkyl substituted by one or more halogen, and C 6 -C 10 arylcarbonyl; R 2 is hydrogen, halogen, cyano, di(C 1 -C 3 alkylcarbonyl)amino, or benzoyloxy; and R 3 is imidazole, pyrimidine, C 1 -C 18 alkyl, C 1 -C 18 alkenyl; cyclohexane; or benzoylamino.