Compounds represented by the general formula:
[wherein R
1
represents methoxy, ethyl, methylthio, etc., R
2
, R
3
and R
4
each represent hydrogen, a halogen, etc., R
5
and R
6
each represent —X
5
—X
6
—X
7
(wherein X
5
represents a single bond or —CO—, X
6
represents a single bond, —NR
3a
, etc. and X
7
and R
3a
each represent hydrogen, C
1-10
alkyl, etc.), and Ar represents phenyl, pyridyl, etc.], salts thereof and hydrates of the foregoing.
由一般式表示的化合物:[其中R1代表甲氧基,乙基,甲
硫基等,R2,R3和R4各代表氢,卤素等,R5和R6各代表—X5—X6—X7(其中X5代表单键或—CO—,X6代表单键,—NR3a等,X7和R3a各代表氢,C1-10烷基等),而Ar代表苯基,
吡啶基等],其盐和上述化合物的
水合物。