| 摘要 |
Described are amino substituted hydroxyphenyl benzophenone derivatives of formula (I), wherein R<SUB>1</SUB>, and R<SUB>2 </SUB>independently from each other are; C<SUB>1</SUB>-C<SUB>20</SUB>alkyl; C<SUB>2</SUB>-C<SUB>20</SUB>-alkenyl; C<SUB>3</SUB>-C<SUB>10</SUB>cycloalkyl; C<SUB>3</SUB>-C<SUB>10</SUB>cycloalkenyl; or R<SUB>1</SUB>, and R<SUB>2 </SUB>together with the linking nitrogen atom form a 5- or 6-membered heterocyclic ring; n<SUB>1 </SUB>is a number from 1 to 4; when n<SUB>1</SUB>=1, R<SUB>3 </SUB>is a saturated or unsaturated heterocyclic radical; hydroxy-C<SUB>1</SUB>-C<SUB>5</SUB>alkyl; cyclohexyl optionally substituted with one or more C<SUB>1</SUB>-C<SUB>5</SUB>alkyl; phenyl optionally substituted with a heterocyclic radical, aminocarbonyl or C<SUB>1</SUB>-C<SUB>5</SUB>alkylcarboxy; when n<SUB>1 </SUB>is 2, R<SUB>3 </SUB>is an alkylene-, cycloalkylene- or alkenylene radical which is optionally substituted by a carbonyl- or carboxy group; o R<SUB>3 </SUB>together with A forms a bivalent radical of the formula (Ia), wherein n<SUB>2 </SUB>is a number from 1 to 3; when n<SUB>1 </SUB>is 3, R<SUB>3 </SUB>is an alkanetriyl radical; when n<SUB>1 </SUB>is 4, R<SUB>3 </SUB>is an alkanetetrayl radical; A is -O-; or -N(R<SUB>5</SUB>)-; and R<SUB>5 </SUB>is hydrogen; C<SUB>1</SUB>-C<SUB>5</SUB>alkyl; or hydroxy-C<SUB>1</SUB>-C<SUB>5</SUB>alkyl. The compounds are useful as UV filters in sunscreen applications.
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