Merocyanine derivatives

A cosmetic or pharmaceutical preparation comprising at least one compound of formula (1) together with cosmetically tolerable carriers or adjuvants

• Q is hydrogen;
• C1-C22alkyl;
• —OH;
• —OR7;
• —NR7R8;
• or —N═R9;
• R1 is hydrogen;
• C1-C22alkyl;
• —OR7, —SR7;
• —NR7R8;
• C1-C22alkyl;
• C2-C12 alkenyl;
• C2-C12alkinyl;
• C3-C12cycloalkyl;
• C3-C12cycloalkenyl;
• C7-C12aralkyl;
• C1-C12heteroalkyl, C2-C11heteroaralkyl;
• C6-C10aryl;
• or C1-C9heteroaryl;
• R4 is cyano;
• COR7, COOR7;
• CONR7R8;
• SO2(C6-C12)aryl;
• C2-C12alk-1-enyl;
• C3-C12cycloalk-1-enyl;
• C2-C12alk-1-inyl;
• C2-C12heteroalkyl;
• C3-C5heterocycloalkyl;
• C6-C10aryl;
• or C1-C9heteroaryl;
• R5 is —COR7;
• —COOR7;
• —OR7;
• —SR7, —NHR7, —NR7R8;
• C1-C22alkyl;
• C2-C12alkenyl;
• C2-C12alkinyl;
• C3-C12cycloalkyl;
• C3-C12cycloalkenyl;
• C7-C12aralkyl;
• C1-C12alkylphenyl;
• C1-C12alkoxy-C6-C10aryl;
• C1-C12heteroalkyl;
• C2-C11heteroaralkyl;
• C3-C12cycloheteroalkyl;
• C6-C10aryl;
• C1-C12alkoxy-C6-C10aryl;
• or C1-C9heteroaryl;
• R6 is hydrogen;
• C1-C22alkyl;
• C1-C22alkoxy;
• or COR7,
• R7 and R8 independently from each other are hydrogen;
• C1-C22alkyl;
• C2-C12alkenyl;
• C2-C12alkinyl;
• C3-C12cycloalkyl;
• C3-C12cycloalkenyl;
• —(CH2)tCOOH;
• C7-C12aralkyl;
• C1-C12heteroalkyl;
• C2-C11heteroaralkyl;
• C6-C10aryl;
• C1-C9heteroaryl;
• Si—R10R11R12;
• Si(OR10)(OR11)(OR12);
• SiR10(OR11)(OR12);
• SiR10R11(OR12);
• —(CH2)u—O—(CH2)v—SiR10R11R12;
• or a radical X-Sil;
• t, u and v, independently from each other are a number from 1 to 5;
• R9 is a (C1-C6)alkylidene radical;
• R10, R11, R12 independently form each other are C1-C22alkyl;
• X is a linker;
• Sil is a silane-, oligosiloxane- or polysiloxane radical;
• R1 and R2, R1 and Q, R1 and R6, R1 and T, R2 and R3, R2 and R4, R2 and R6, R2 and Q, R4 and R6, R4 and T, R6 and Q, T and Q, each independently, are linked together, so that 1, 2, 3 or 4 carbocyclic or N, O and/or S-heterocyclic rings are formed, wherein each of them, independently from each other, may be condensed with an aromatic or heteroaromatic ring, and/or more N-, O- and/or S-heterocyclic rings, and each N atom in a N-heterocyclic ring may be substituted by C1-C22alkyl;
• n is a number from 1 to 4;
• wherein at least one of the radicals R1, R6 or Q is different from hydrogen;
• if n=1
• T is —COR5;
• —CN;
• C6-C10aryl;
• —NHR5;
• or —SO2—(C6-C12)aryl;
• R2 and R3 independently from each other are C1-C22alkyl;
• hydroxy-C1-C22alkyl;
• C2-C12alkenyl;
• C2-C12alkinyl;
• C3-C12cycloalkyl, C3-C12cycloalkenyl;
• C7-C12 aralkyl;
• C1-C12heteroalkyl;
• C3-C12cycloheteroalkyl;
• C6-C10aryl;
• C1-C9heteroaryl;
• or a radical of formula
• p is a number from 5 to 100
• q is a number from 1 to 5;
• s is a number from 0 to 4;
• if n=2
• R2 and R3 are each C1-C5alkylene;
• and simultaneously T is defined as for n=1;
• or
• T is a bivalent radical of formula —NR7—V—NR7—, wherein
• V is phenylene;
• or C1-C5alkylene;
• R7 is hydrogen;
• or C1-C5alkyl;
• and R2 and R3 simultaneously are defined as for n=1;
• if n=3
• one of R2, R3 or T is a trivalent radical;
• if n=4
• one of R2, R3 or T is a tetravalent radical;
• for protecting of human hair and skin against the damaging effect of UV radiation.