| abstract |
An amino-substituted hydroxyphenylbenzophenone derivative is provided. SOLUTION: Formula (1) [Chemical 1] [Where: R 1 and R 2 are each independently an alkyl group having 1 to 20 carbon atoms; an alkenyl group having 2 to 20 carbon atoms; a cycloalkyl group having 3 to 10 carbon atoms; Represents a cycloalkenyl group; or R 1 and R 2 together with the nitrogen atom to which they are attached form a 5- or 6-membered heterocycle; n 1 represents a number from 1 to 4; If n 1 = 1, R 3 represents a saturated or unsaturated heterocyclic group; a hydroxy-alkyl group having 1 to 5 carbon atoms; a cyclohexyl group optionally substituted with one or more alkyl groups having 1 to 5 carbon atoms; Represents a phenyl group substituted with a heterocyclic group, an aminocarbonyl group or an alkylcarboxy group having 1 to 5 carbon atoms; When n 1 represents 2, R 3 represents an alkylene group, a cycloalkylene group or an alkenylene group optionally substituted with a carbonyl group or a carboxy group; or R 3 together with A represents a compound of the formula (1a) [Chemical 2] (Wherein n 2 represents a number of 1 to 3); If n 1 represents 3, R 3 represents an alkanetriyl group; If n 1 represents 4, R 3 represents an alkanetetrayl group; A represents —O—; or —N (R 5 ) — (wherein R 5 represents a hydrogen atom; an alkyl group having 1 to 5 carbon atoms; or a hydroxy-alkyl group having 1 to 5 carbon atoms. .) An amino-substituted hydroxyphenylbenzophenone derivative represented by the formula: |