Novel 2-Amino-4,5,6,8-Tetrahydropyrazolo[3,4-b]Thiazolo [4,5-d]Azepine Derivatives and Their Use as Allosteric Modulators of Metabotropic Glutamate Receptors

A compound having the Formula (I) wherein:

• a pharmaceutically acceptable acid or base addition salt thereof, a stereochemically isomeric form thereof and an N-oxide form thereof, wherein:
• M is an optionally substituted heteroaryl;
• R1 is hydrogen or an optionally substituted radical selected from the group of —(C3-C7)cycloalkyl, —(C1-C6)alkylene-(C3-C7)cycloalkyl, —(C3-C7)cycloalkylene-(C1-C6)alkyl, —(C0-C6)alkylene-(C3-C7)spiroalkylene-(C0-C6)alkyl, —(C1-C6)alkylene-aryl, aryl, —(C1-C6)alkylene-hetero aryl, heteroaryl, —(C1-C6)alkylene-hetero cycle, heterocycle, —(C2-C6)alkylene-OR2, —(C2-C6)alkylene-NR2R3, —(C0-C6)alkylene-C(═O)—NR2R3, —(C0-C6)alkylene-C(═O)—R2;
• R2 and R3 are each independently hydrogen or an optionally substituted radical selected from the group of —(C1-C6)haloalkyl, —(C1-C6)alkyl, —(C1-C6)cyanoalkyl, —(C3-C7)cycloalkyl, —(C1-C6)alkylene-(C3-C7)cycloalkyl, —(C3-C7)cycloalkylene-(C1-C6)alkyl, —(C0-C6)alkylene-(C3-C7)spiroalkylene-(C0-C6)alkyl, heteroaryl, —(C1-C6)alkylene-hetero aryl, aryl, —(C1-C6)alkylene-aryl, —(C1-C6)alkylene-heterocycle, heterocycle, —(C2-C6)alkylene-O—(C0-C6)alkyl and —(C2-C6)alkylene-N-((C0-C6)alkyl)2;
• R2 and R3 may be taken together to form an optionally substituted 3 to 10 membered carbocyclic or heterocyclic ring;
• and
• provided that the compound is not:
• 6-(Cyclopropylmethyl)-N-(5-fluoropyrimidin-2-yl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-(2-Methoxyethyl)-N-(4-methylpyrimidin-2-yl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(4-Methylpyrimidin-2-yl)-6-((tetrahydrofuran-2-yl)methyl)-4,5,6,8-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-(1-Methoxypropan-2-yl)-N-(4-methylpyrimidin-2-yl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-(2-methoxyethyl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-(2-Methoxyethyl)-N-(6-methylpyridin-2-yl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(6-Fluoropyridin-2-yl)-6-(2-methoxyethyl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyridin-2-yl)-6-(2-methoxyethyl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-((1-Methyl-1H-pyrazol-3-yl)methyl)-N-(4-methylpyrimidin-2-yl)-4,5,6,8-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N,N-Dimethyl-2-(2-(4-methylpyrimidin-2-ylamino)-4,5-dihydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-6(8H)-yl)acetamide
• 6-(2-Methoxyethyl)-N-(4-methoxypyrimidin-2-yl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-(2-Methoxyethyl)-N-(5-methyl-1,2,4-thiadiazol-3-yl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 2-(2-(5-Fluoropyrimidin-2-ylamino)-4,5-dihydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-6(8H)-yl)ethanol
• N2-(6-(2-Methoxyethyl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-yl) pyridine-2,6-diamine
• N-(5-Fluoropyrimidin-2-yl)-6-((5-methylisoxazol-3-yl)methyl)-4,5,6,8-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-((3,5-Dimethylisoxazol-4-yl)methyl)-N-(5-fluoropyrimidin-2-yl)-4,5,6,8-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-((2-isopropyloxazol-4-yl)methyl)-4,5,6,8-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-(pyridin-2-ylmethyl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-(pyridin-4-ylmethyl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-(tetrahydrofuran-3-yl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-(2-(methylamino)ethyl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-(3-methoxypropyl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-((3-methylisoxazol-5-yl)methyl)-4,5,6,8-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-(Cyclopentylmethyl)-N-(5-fluoropyrimidin-2-yl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-(Cyclopropylmethyl)-N-(4-methylpyrimidin-2-yl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-(Cyclohexylmethyl)-N-(5-fluoropyrimidin-2-yl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-(Cyclopropylmethyl)-N-(6-methylpyridin-2-yl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-(Cyclopropylmethyl)-N-(6-fluoropyridin-2-yl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-((5-Chloropyridin-2-yl)methyl)-N-(5-fluoropyrimidin-2-yl)-4,5,6,8-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-((5-isopropylisoxazol-3-yl)methyl)-4,5,6,8-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-(2-isopropoxyethyl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-(Cyclobutylmethyl)-N-(5-fluoropyrimidin-2-yl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-Benzyl-N-(5-fluoropyrimidin-2-yl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-((3-Methylisoxazol-5-yl)methyl)-N-(4-methylpyrimidin-2-yl)-4,5,6,8-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-((tetrahydrofuran-2-yl)methyl)-4,5,6,7-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-(pyrimidin-2-ylmethyl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 2-(6-(2-Methoxyethyl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-ylamino)pyrimidin-5-ol
• N-(5-Fluoropyrimidin-2-yl)-6-(((R)-tetrahydrofuran-2-yl)methyl)-4,5,6,7-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-((2-methyl-2H-1,2,3-triazol-4-yl)methyl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• (6-(6-(2-Methoxyethyl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-ylamino)pyridin-2-yl)methanol
• 6-(2-Methoxyethyl)-N-(2-methylpyrimidin-4-yl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-(2-Methoxyethyl)-N-(pyrimidin-4-yl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-((1H-Pyrazol-5-yl)methyl)-N-(5-fluoropyrimidin-2-yl)-4,5,6,8-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-((4-Bromo-1H-pyrazol-5-yl)methyl)-N-(5-fluoropyrimidin-2-yl)-4,5,6,8-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-c]azepin-2-amine
• 6-(4-Chlorobenzyl)-N-(5-fluoropyrimidin-2-yl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-(2-methylbenzyl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-(3-methoxybenzyl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-((5-Fluoropyridin-2-yl)methyl)-N-(5-fluoropyrimidin-2-yl)-4,5,6,7-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-((5-(trifluoromethyl)pyridin-2-yl)methyl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-((4-methylpyridin-2-yl)methyl)-4,5,6,7-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-((3-Chloropyridin-2-yl)methyl)-N-(5-fluoropyrimidin-2-yl)-4,5,6,7-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-phenethyl-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(3-Fluoro-6-methylpyridin-2-yl)-6-(2-methoxyethyl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-(3-Chlorobenzyl)-N-(5-fluoropyrimidin-2-yl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 4-((2-(5-Fluoropyrimidin-2-ylamino)-4,5-dihydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-6(7H)-yl)methyl)benzonitrile
• N-(5-Fluoropyrimidin-2-yl)-6-(4-(trifluoromethyl)benzyl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-((6-methylpyridin-2-yl)methyl)-4,5,6,7-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-(2-(pyridin-2-yl)ethyl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-((1-methyl-1H-1,2,4-triazol-5-yl)methyl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-((1-methyl-1H-1,2,4-triazol-3-yl)methyl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-(2-Chlorobenzyl)-N-(5-fluoropyrimidin-2-yl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-(4-Fluorobenzyl)-N-(5-fluoropyrimidin-2-yl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-((2-(5-Fluoropyrimidin-2-ylamino)-4,5-dihydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-6(7H)-yl)methyl)nicotinonitrile
• N-(5-Fluoropyrimidin-2-yl)-6-((5-methoxypyridin-2-yl)methyl)-4,5,6,7-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-(piperidin-4-ylmethyl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-((5-Chlorothiazol-2-yl)methyl)-N-(5-fluoropyrimidin-2-yl)-4,5,6,7-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• N-(5-Fluoropyrimidin-2-yl)-6-((1-methyl-1H-imidazol-4-yl)methyl)-4,5,6,7-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-(1-(5-Chloropyridin-2-yl)ethyl)-N-(5-fluoropyrimidin-2-yl)-4,5,6,7-tetrahydro pyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine
• 6-Cyclobutyl-N-(5-fluoropyrimidin-2-yl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine and
• N-(6-(Fluoromethyl)pyridin-2-yl)-6-(2-methoxyethyl)-4,5,6,7-tetrahydropyrazolo[3,4-b]thiazolo[4,5-d]azepin-2-amine.