Substituted 6-amino-nicotinamides as KCNQ2/3 modulators

A substituted compound of formula (I):

• wherein
• R1 represents a C1-10-aliphatic residue, unsubstituted or mono- or polysubstituted;
• a C3-10-cycloaliphatic residue or a 3 to 10 membered heterocycloaliphatic residue, in each case unsubstituted or mono- or polysubstituted and in each case optionally bridged via a C1-8 aliphatic group, which in turn may be unsubstituted or mono- or polysubstituted;
• aryl or heteroaryl, in each case unsubstituted or mono- or polysubstituted and in each case optionally bridged via a C1-8 aliphatic group, which in turn may be unsubstituted or mono- or polysubstituted;
• R2 represents F;
• Cl;
• Br;
• I;
• CN;
• CF3;
• C(═O)H;
• NO2;
• OCF3;
• SCF3;
• a C1-4-aliphatic residue, a C(═O)—C1-4 aliphatic residue, a C(═O)—O—C1-4 aliphatic residue, a C(═O)—NH—C1-4 aliphatic residue, a C(═O)—N(C1-4 aliphatic residue)2, wherein the C1-4 aliphatic residue may be in each case be unsubstituted or mono- or polysubstituted;
• a O—C1-4-aliphatic residue, a O—C(═O)—C1-4-aliphatic residue, a S—C1-4-aliphatic residue, a S(═O)2—C1-4-aliphatic residue, a S(═O)2—O—C1-4-aliphatic residue, wherein the C1-4 aliphatic residue may in each case be unsubstituted or mono- or polysubstituted;
• a C3-6-cycloaliphatic residue or a 3 to 6 membered heterocycloaliphatic residue, in each case unsubstituted or mono- or polysubstituted and in each case optionally bridged via a C1-4 aliphatic group, which in turn may be unsubstituted or mono- or polysubstituted;
• R3 represents H;
• F;
• Cl;
• Br;
• I;
• CN;
• CF3;
• SCF3;
• NO2;
• OCF3;
• a C1-4-aliphatic residue, a O—C1-4-aliphatic residue, a S—C1-4-aliphatic residue, wherein the C1-4 aliphatic residue may be in each case be unsubstituted or mono- or polysubstituted;
• a C3-6-cycloaliphatic residue or a 3 to 6 membered heterocycloaliphatic residue, in each case unsubstituted or mono- or polysubstituted and in each case optionally bridged via a C1-4 aliphatic group, which in turn may be unsubstituted or mono- or polysubstituted;
• R4 represents a C1-10-aliphatic residue, unsubstituted or mono- or polysubstituted;
• a C3-10-cycloaliphatic residue or a 3 to 10 membered heterocycloaliphatic residue, in each case unsubstituted or mono- or polysubstituted and in each case optionally bridged via a C1-8 aliphatic group, which in turn may be unsubstituted or mono- or polysubstituted;
• aryl or heteroaryl, in each case unsubstituted or mono- or polysubstituted and in each case optionally bridged via a C1-8 aliphatic group, which in turn may be unsubstituted or mono- or polysubstituted;
• on the condition that if R4 denotes a 3 to 10 membered heterocycloaliphatic residue or a heteroaryl, the 3 to 10 membered heterocycloaliphatic residue or the heteroaryl is linked via a carbon atom;
• R5 denotes H or a C1-10-aliphatic residue, unsubstituted or mono- or polysubstituted;
• or
• R4 and R5 form together with the nitrogen atom connecting them a 3 to 10 membered heterocycloaliphatic residue, unsubstituted or mono- or polysubstituted;
• R6 represents a C2-10-aliphatic residue, unsubstituted or mono- or polysubstituted;
• a C3-10-cycloaliphatic residue or a 3 to 10 membered heterocycloaliphatic residue, in each case unsubstituted or mono- or polysubstituted and in each case optionally bridged via a C1-8 aliphatic group, which in turn may be unsubstituted or mono- or polysubstituted;
• on the condition that if R6 denotes a 3 to 10 membered heterocycloaliphatic residue, the 3 to 10 membered heterocycloaliphatic residue is linked via a carbon atom, or
• denotes S—R7, O—R8 or N(R9R10),
• wherein
• R7 and R8 in each case represent a C1-10-aliphatic residue, unsubstituted or mono- or polysubstituted;
• a C3-10-cycloaliphatic residue or a 3 to 10 membered heterocycloaliphatic residue, in each case unsubstituted or mono- or polysubstituted and in each case optionally bridged via a C1-8 aliphatic group, which in turn may be unsubstituted or mono- or polysubstituted;
• on the condition that if R7 or R8 denotes a 3 to 10 membered heterocycloaliphatic residue, the 3 to 10 membered heterocycloaliphatic residue is linked via a carbon atom,
• R9 represents a C1-10-aliphatic residue, unsubstituted or mono- or polysubstituted;
• a C3-10-cycloaliphatic residue or a 3 to 10 membered heterocycloaliphatic residue, in each case unsubstituted or mono- or polysubstituted and in each case optionally bridged via a C1-8 aliphatic group, which in turn may be unsubstituted or mono- or polysubstituted;
• on the condition that if R9 denotes a 3 to 10 membered heterocycloaliphatic residue, the 3 to 10 membered heterocycloaliphatic residue is linked via a carbon atom;
• R10 denotes a C1-10-aliphatic residue, unsubstituted or mono- or polysubstituted;
• or
• R9 and R10 form together with the nitrogen atom connecting them a 3 to 10 membered heterocycloaliphatic residue, unsubstituted or mono- or polysubstituted;
• in which an “aliphatic group” and an “aliphatic residue” can in each case be branched or unbranched, saturated or unsaturated,
• in which a “cycloaliphatic residue” and a “heterocycloaliphatic residue” can in each case be saturated or unsaturated,
• in which “mono- or polysubstituted” with respect to an “aliphatic group” and an “aliphatic residue” relates, with respect to the corresponding residues or groups, to the substitution of one or more hydrogen atoms each independently of one another by at least one substituent selected from the group consisting of F, Cl, Br, I, NO2, NH2, an NH(C1-4 aliphatic residue), an N(C1-4 aliphatic residue)2, a NH—C(═O)—C1-4 aliphatic residue, a NH—S(═O)2—C1-4 aliphatic residue, ═O, OH, OCF3, a O—C1-4-aliphatic residue, a O—C(═O)—C1-4-aliphatic residue, SH, SCF3, a S—C1-4-aliphatic residue, S(═O)2OH, a S(═O)2—C1-4-aliphatic residue, a S(═O)2—O—C1-4-aliphatic residue, a S(═O)2—NH—C1-4-aliphatic residue, CN, CF3, CHO, COOH, a C1-4-aliphatic residue, a C(═O)—C1-4-aliphatic residue, a C(═O)—O—C1-4-aliphatic residue, a C3-6-cycloaliphatic residue, a 3 to 6 membered heterocycloaliphatic residue, C(═O)—NH2, a C(═O)—NH(C1-4 aliphatic residue), and a C(═O)—N(C1-4 aliphatic residue)2;
• in which “mono- or polysubstituted” with respect to a “cycloaliphatic residue” and a “heterocycloaliphatic residue” relates, with respect to the corresponding residues, to the substitution of one or more hydrogen atoms each independently of one another by at least one substituent selected from the group consisting of F, Cl, Br, I, NO2, NH2, an NH(C1-4 aliphatic residue), an N(C1-4 aliphatic residue)2, a NH—C(═O)—C1-4 aliphatic residue, a NH—S(═O)2—C1-4 aliphatic residue, ═O, OH, OCF3, a O—C1-4-aliphatic residue, a O—C(═O)—C1-4-aliphatic residue, SH, SCF3, a S—C1-4-aliphatic residue, S(═O)2OH, a S(═O)2—C1-4-aliphatic residue, a S(═O)2—O—C1-4-aliphatic residue, a S(═O)2—NH—C1-4-aliphatic residue, CN, CF3, CHO, COOH, a C1-4-aliphatic residue, a C(═O)—C1-4-aliphatic residue, a C(═O)—O—C1-4-aliphatic residue, a C3-6-cycloaliphatic residue, a 3 to 6 membered heterocycloaliphatic residue, C(═O)—NH2, a C(═O)—NH(C1-4 aliphatic residue), and a C(═O)—N(C1-4 aliphatic residue)2;
• in which “mono- or polysubstituted” with respect to “aryl” and a “heteroaryl” relates, with respect to the corresponding residues, to the substitution of one or more hydrogen atoms each independently of one another by at least one substituent selected from the group consisting of F, Cl, Br, I, NO2, NH2,
• an NH(C1-4 aliphatic residue), an N(C1-4 aliphatic residue)2, an NH—C(═O)—C1-4 aliphatic residue, an NH—S(═O)2—C1-4 aliphatic residue, OH, OCF3, a O—C1-4-aliphatic residue, a O—C(═O)—C1-4-aliphatic residue, SH, SCF3, a S—C1-4-aliphatic residue, S(═O)2OH, a S(═O)2—C1-4-aliphatic residue, a S(═O)2—O—C1-4-aliphatic residue, a S(═O)2—NH—C1-4-aliphatic residue, CN, CF3, C(═O)H, C(═O)OH, a C1-4-aliphatic residue, a C(═O)—C1-4-aliphatic residue, a C(═O)—O—C1-4-aliphatic residue, a C3-6-cycloaliphatic residue, a 3 to 6 membered heterocycloaliphatic residue, benzyl, aryl, heteroaryl, C(═O)—NH2, a C(═O)—NH(C1-4 aliphatic residue), and a C(═O)—N(C1-4 aliphatic residue)2;
• said compound being in the form of a free compound, the racemate, a mixture of enantiomers, diastereomers, or of enantiomers and diastereomers in any mixing ratio, or of an individual enantiomer or diastereomer, or in the form of a salt of physiologically acceptable acids or bases.