CINNAMYLIDENE CAMPHOR DERIVATIVES AND THEIR USE AS UV-A PROTECTING AGENTS

摘要

PCT No. PCT/EP97/01122 Sec. 371 Date Sep. 3, 1998 Sec. 102(e) Date Sep. 3, 1998 PCT Filed Mar. 6, 1997 PCT Pub. No. WO97/33855 PCT Pub. Date Sep. 18, 1997The invention relates to cinnamylidenecamphor derivatives of the formula (1) where the diene system is in the Z,Z, Z,E, E,Z or E,E configuration and R1 is H, CH3, R2 is C1-C6-alkyl, C1-C6-alkoxy, halogen, NR3H, NR32, R3 is C1-C4-alkyl, R4 is H, C1-C6-alkyl, n is 1, 2, and to its use.