| 摘要 |
<p>Described are amino substituted hydroxyphenyl benzophenone derivatives of formula (I), wherein R1, and R2 independently from each other are; C1,-C20alkyl; C2-C20alkenyl; C3-C10,cycloalkyl; C3-C10cycloalkenyl; or R1, and R2 together with the linking nitogen atom form a 5- or 6-membered heterocyclic ring; n1 is a number from 1 to 4; when n1=1, R3 is a saturated or unsaturated heterocyclic radical; hydroxy-C1-C5alkyl; cyclohexyl optionally substituted with one or more C1,-C5alkyl; phenyl optionally substituted with a heterocyclic radical, aminocarbonyl or C1-C5alkylcarboxy; wenn n1 is 2, R3 is an alkylene-, cycloalkylene- or alkenylene radical which is optionally substituted by a carbonyl- or carboxy group; o R3 together with A forms a bivalent radical of the formula (Ia), wherein n2 is a number from 1 to 3; when n1 is 3, R3 is an alkanetriyl radical; wenn n1 is 4, R3 is an alkanetetrayl radical; A is -O-; or -N(R5)-; and R5 is hydrogen; C1-C5alkyl; or hydroxy-C1-C5alkyl. The compounds are useful as UV filters in sunscreen applications.</p> |
