A compound represented by the following formula (1):
(wherein the carbon atom denoted by * is in the R-configuration; R1 and R2 are each independently a hydrogen atom, a halogen atom, an amino group, a hydroxyl group, a hydroxyamino group, a nitro group, a cyano group, a sulfamoyl group, a C1-C6 alkyl group, a C1-C6 alkoxy group, a C1-C6 alkylsulfanyl group, a C1-C6 alkylsulfinyl group or a C1-C6 alkylsulfonyl group; andA is a substituted or unsubstituted heteroaryl group), or a pharmaceutically acceptable salt thereof.
下式(1)所代表的化合物:
(其中用 * 表示的碳原子为 R 构型;R1 和 R2 各自独立地为氢原子、卤素原子、
氨基、羟基、羟基
氨基、硝基、
氰基、
氨基磺酰基、C1-C6 烷基、C1-C6 烷氧基、C1-C6 烷
硫基、C1-C6 烷亚磺酰基或 C1-C6 烷磺酰基;A 为取代或未取代的杂芳基),或其药学上可接受的盐。