| abstract |
Carbostiryl compound represented by the general formula (1) or a salt thereof in which A is a C1-6 alkylene group; X is an oxygen atom or a sulfur atom; the bond between positions 3 and 4 of the carbostiryl skeleton is a single bond or a double bond; R4 and R5 each represent a hydrogen atom, with the proviso that when the bond between positions 3 and 4 of the carbostiryl skeleton is a double bond, R4 and R5 can be instead be linked together in the form of a group -CH> = CH-CH> = CH-; R1 is one of the following (1-1) to (1-29); (1-1) a hydrogen atom, ( 1-2) a C1-6 alkyl group. |