| 主权项 |
1. A compound represented by the following formula (I),
wherein: R1 represents a hydrogen atom, a C1-6alkyl or a trifluoromethyl group; R2 represents a hydrogen atom, a C1-6alkyl, a halogen, a —COO(C1-6alkyl) or a —(CH2)1-3COOR group, wherein R represents a hydrogen atom or a C1-6alkyl; R3 represents a hydrogen atom, a C1-6alkyl, an amino, a trifluoromethyl group or an —OR group, R represents a hydrogen atom or a C1-6alkyl; R4 represents a hydroxyl group; R5 represents a hydrogen atom, a C1-6alkyl, a hydroxyl group or a halogen; R6 represents a C1-6alkyl, a trifluoromethyl group, a halogen, an amino group, a —NRaRb group, a nitro group, a hydroxy C1-6alkyl, a —CONRaRb group, a —COO(C1-6alkyl), a —COOH, a —(CH2)1-3COOR group, or an —ORa group, wherein R represents a hydrogen atom or a C1-6alkyl, and Ra and Rb are the same or different from each other and represent a hydrogen atom, a C1-6alkyl or a C1-6acyl; R7 represents a hydrogen atom, a C1-6alkyl, an —OR group, wherein R represents a hydrogen atom or a C1-6alkyl; and R8 represents a hydrogen atom, a C1-6alkyl, a hydroxyl group, an amino group or a nitro group, with the proviso that when R1 is a hydrogen atom, R3 is not a hydrogen atom, and the compound wherein R1 is tert-butyl group, R3 is an amino group, R4 is a hydroxyl group and R6 is a methyl group is excluded, or a salt thereof |
