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A compound selected from the group consisting of compounds of the formulae XI and XX, ##STR17## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.6 and R.sup.7 are independently selected from the group consisting of:

• hydrogen;
• C.sub.1 to C.sub.6 alkyl;
• CH.sub.1 to C.sub.6 alkoxy-C.sub.1 to C.sub.6 alkyl;
• C.sub.3 to C.sub.12 cycloalkyl;
• -C.tbd.N;
• phenyl;
• benzyl;
• substituted phenyl;
• substituted benzyl;
• wherein the substituted phenyl and substituted benzyl are substituted with one or more substituents, each of said substituents being independently selected from the group consisting of C.sub.1 to C.sub.6 alkyl, methoxy and hydroxy;
• COOR.sup.8, wherein R.sup.8 is selected from the group consisting of hydrogen, C.sub.1 to C.sub.6 alkyl, C.sub.1 to CH.sub.6 alkoxy-C.sub.1 to C.sub.6 alkyl, C.sub.3 to C.sub.12 cycloalkyl, benzyl, phenyl, substituted phenyl and substituted benzyl, wherein the substituted phenyl and substituted benzyl are substituted with one or more substituents, each of said substituents being independently selected from the group consisting of C.sub.1 to C.sub.6 alkyl, methoxy and hydroxy;
• -CONR.sup.9 R.sup.10, wherein R.sup.9 and R.sup.10 are independently selected from the group consisting of hydrogen, C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy-C.sub.1 to C.sub.6 alkyl, C.sub.3 to C.sub.12 cycloalkyl, phenyl, benzyl, substituted phenyl and substituted benzyl, wherein the substituted phenyl and substituted benzyl are substituted with one or more substituents, each of said substituents being independently selected from the group consisting of C.sub.1 to C.sub.6 alkyl, methoxy and hydroxy, or R.sup.9 and R.sup.10 taken together with the nitrogen to which they are attached form an N-methyl piperazino, morpholino, piperidino, or pyrrolidino ring;
• ##STR18## --COR.sup.12 ;
• --CHO;
• ##STR19## wherein X is halogen, and wherein R.sup.11 and R.sup.12 are independently selected from the group consisting of C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy-C.sub.1 to C.sub.6 alkyl, C.sub.3 to C.sub.12 cycloalkyl, phenyl, benzyl, substituted phenyl and substituted benzyl, wherein the substituted phenyl and substituted benzyl are substituted with one or more substituents, each of said substituents being independently selected from the group consisting of C.sub.1 to C.sub.6 alkyl, methoxy and hydroxy, with the proviso that in a compound of the formula XI at least one of R.sup.1, R.sup.3, R.sup.6 and R.sup.7 is an amide, a nitrile, a carboxylic acid, a carboxylic acid ester, or a salt of a carboxylic acid, and with the provisos that in a compound of the formula XX at least one of R.sup.2, R.sup.3, R.sup.6 and R.sup.7 is an amide, a nitrile, a carboxylic acid, a carboxylic acid ester, or a salt of a carboxylic acid, and that R.sup.6 cannot be -COOH or C.tbd.N or CONH.sub.2 when R.sup.2, R.sup.3 and R.sup.7 are hydrogen.

A compound selected from the group consisting of compounds of the formulae VIII, IX, X, XVIII and XIX, ##STR20## wherein the broken line indicates that one double bond is present in the formula, and wherein R.sup.1, R.sup.2, R.sup.3, R.sup.6 and R.sup.7 are independently selected from the group consisting of:

• hydrogen;
• C.sub.1 to C.sub.6 alkyl;
• C.sub.1 to C.sub.6 alkoxy-C.sub.1 to C.sub.6 alkyl;
• C.sub.3 to C.sub.12 cycloalkyl;
• phenyl;
• benzyl;
• substituted phenyl;
• substituted benzyl;
• wherein the substituted phenyl and substituted benzyl are substituted with one or more substituents, each of said substituents being independently selected from the group consisting of C.sub.1 to C.sub.6 alkyl, methoxy and hydroxy;
• --C.tbd.N;
• COOR.sup.8 ;
• wherein R.sup.8 is selected from the group consisting of C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy-C.sub.1 to C.sub.6 alkyl, C.sub.3 to C.sub.12 cycloalkyl, benzyl, phenyl, substituted phenyl, substituted benzyl, wherein the substituted phenyl and substituted benzyl are substituted with one or more substituents, each of said substituents being independently selected from the group consisting of C.sub.1 to C.sub.6 alkyl, methoxy and hydroxy;
• --CONR.sup.9 R.sup.10, wherein R.sup.9 and R.sup.10 are independently selected from the group consisting of hydrogen, C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy-C.sub.1 to C.sub.6 alkyl, C.sub.3 to C.sub.12 cycloalkyl, phenyl, benzyl, substituted phenyl, substituted benzyl, wherein the substituted phenyl and substituted benzyl are substituted with one or more substituents, each of said substituents being independently selected from the group consisting of C.sub.1 to C.sub.6 alkyl, methoxy and hydroxy, or R.sup.9 and R.sup.10 taken together with the nitrogen to which they are attached form an N-methyl piperazino, morpholino, piperidino, or pyrrolidino ring;
• ##STR21## --COR.sup.12 ;
• --CHO;
• ##STR22## wherein X is halogen, and wherein R.sup.11 and R.sup.12 are independently selected from C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy-C.sub.1 to C.sub.6 alkyl, C.sub.3 to C.sub.12 cycloalkyl, phenyl, benzyl, substituted phenyl, and substituted benzyl, wherein the substituted phenyl and substituted benzyl are substituted with one or more substituents, each of said substituents being independently selected from the group consisting of C.sub.1 to C.sub.6 alkyl, methoxy and hydroxy.

A compound selected from the group consisting of compounds of the formulae XXI and XXII, ##STR23## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.6 and R.sup.7 are independently selected from the group consisting of:

• hydrogen;
• C.sub.1 to C.sub.6 alkyl;
• C.sub.1 to C.sub.6 alkoxy-C.sub.1 to C.sub.6 alkyl;
• C.sub.3 to C.sub.12 cycloalkyl;
• phenyl;
• benzyl;
• substituted phenyl and substituted benzyl, wherein the substituted phenyl and substituted benzyl are substituted with one or more substituents, each of said substituents being independently selected from the group consisting of C.sub.1 to C.sub.6 alkyl, methoxy and hydroxy;
• --C.tbd.N;
• COOR.sup.8, wherein R.sup.8 is selected from the group consisting of C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxyC.sub.1 to C.sub.6 alkyl, C.sub.3 to C.sub.12 cycloalkyl, phenyl, benzyl, substituted phenyl, substituted benzyl, wherein the substituted phenyl and substituted benzyl are substituted with one or more substituents, each of said substituents being independently selected from the group consisting of C.sub.1 to C.sub.6 alkyl, methoxy and hydroxy;
• --CONR.sup.9 R.sup.10, wherein R.sup.9 and R.sup.10 are independently selected from the group consisting of hydrogen, C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy-C.sub.1 to C.sub.6 alkyl, C.sub.3 to C.sub.12 cycloalkyl, phenyl, benzyl, substituted phenyl, substituted benzyl, wherein the substituted phenyl and substituted benzyl are substituted with one or more substituents, each of said substituents being independently selected from the group consisting of C.sub.1 to C.sub.6 alkyl, methoxy and hydroxy, or R.sup.9 and R.sup.10 taken together with the nitrogen to which they are attached form an N-methyl piperazino, morpholino, piperidino, or pyrrolidino ring;
• ##STR24## --COR.sup.12 ;
• --CHO;
• ##STR25## wherein X is halogen, and wherein R.sup.11 and R.sup.12 are independently selected from C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy-C.sub.1 to C.sub.6 alkyl, C.sub.3 to C.sub.12 cycloalkyl, phenyl, benzyl, substituted phenyl, substituted benzyl, wherein the substituted phenyl and substituted benzyl are substituted with one or more substituents, each of said substituents being independently selected from the group consisting of C.sub.1 to C.sub.6 alkyl, methoxy and hydroxy, and wherein Z and Y are independently selected from the group consisting of --C.tbd.N, --COOR.sup.13, --CONR.sup.14 R.sup.15, wherein R.sup.13, R.sup.14 and R.sup.15 are independently selected from the group consisting of hydrogen, C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy-C.sub.1 to C.sub.6 alkyl, C.sub.3 to CH.sub.12 cycloalkyl, phenyl, benzyl, substituted phenyl, substituted benzyl, wherein the substituted phenyl and substituted benzyl are substituted with one or more substituents, each of said substituents being independently selected from the group consisting of C.sub.2 to C.sub.6 alkyl, methoxy and hydroxy, or and R.sup.14 and R.sup.15 taken together with the nitrogen to which they are attached form an N-methyl piperazino, morpholino, piperidino, or pyrrolidino ring.