(1R)-N-methyl-1,2,3,4-tetrahydronaphthalen-1-amine

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 3′,4′,5′,6′-tetrahydro-2′H-[2,4′]bipyridinyl-6,1′-dicarboxylic acid 1′-tert-butyl ester (150 mg, 0.49 mmol), methyl-(R)-1,2,3,4-tetrahydro-naphthalen-1-yl-amine (0.079 g, 0.49 mmol), and diisopropylethylamine (0.50 mL, 0.49 mmol) in DMF (10 mL) was added dropwise BOP (238 mg, 0.49 mmol) at RT. After stirring overnight at RT, the reaction mixture was poured on water (10 mL) and extracted with ethylacetate (20 mL). The aqueous phase was re-extracted with ethylacetate (20 mL). The combined organic layers were washed with aq. sat. sodium bicarbonate solution (30 mL), 1M HCl solution (30 mL) and brine (30 mL), dried over sodium sulfate, filtered, and evaporated under reduce pressure. The crude mixture was purified by column chromatography on silica gel (ethylacetate/hexane 4:1) to give 6-[methyl-(1,2,3,4-tetrahydro-naphthalen-1-yl)-carbamoyl]-3′,4′,5′,6′-tetrahydro-2′H-[2,4′]bipyridinyl-1′-carboxylic acid tert-butyl ester (215 mg, 97%). 1H-NMR (400 MHz, CDCl3): δ=1.47 (s, 9H), 1.64-2.05 (m, 8H), 2.18-2.22 (m, 1H), 2.72-2.81 (m, 4H), 2.82 (s, 3H), 4.15-4.25 (m, 2H), 5.15-5.20 (m, 1H), 7.18-7.25 (m, 5H), 7.53-7.71 (m, 1H), 7.73-7.74 (m, 1H). the reaction mixture was poured on water (10 mL) extracted with ethylacetate (20 mL) The aqueous phase was re-extracted with ethylacetate (20 mL) The combined organic layers were washed with aq. sat. sodium bicarbonate solution (30 mL), 1M HCl solution (30 mL) and brine (30 mL) dried over sodium sulfate filtered evaporated The crude mixture was purified by column chromatography on silica gel (ethylacetate/hexane 4:1)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1-(1,1-dimethylethyl) 4-(4-chloromethyl-2-thiazolyl)-1-piperidinecarboxylate (i.e. the product of Example 1, Step C) (0.15 g, 0.47 mmol), (1R)-1,2,3,4-tetrahydro-N-methyl-1-naphthalenamine (0.076 g, 0.47 mmol) and potassium carbonate (0.072 g, 0.52 mmol) in dry acetonitrile (5 mL) was heated at reflux for two days. Then the reaction mixture was filtered, concentrated under reduced pressure, diluted with dichloromethane, and washed with 1 N aqueous hydrochloric acid and water. The organic layers were dried (MgSO4) and concentrated under reduced pressure to give 0.19 g of the title compound as a tan foam. was heated at reflux for two days Then the reaction mixture was filtered concentrated under reduced pressure diluted with dichloromethane washed with 1 N aqueous hydrochloric acid and water The organic layers were dried (MgSO4) concentrated under reduced pressure

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-[3-(tert-butoxycarbonyl-methyl-amino)-prop-1-ynyl]-thiazole-4-carboxylic acid (1.11 g, 3.75 mmol) in DMF (20 mL) was added diisopropylethylamine (1.93 mL, 11.3 mmol), followed by 2-(1H-7-azabenzotriazol-1-yl)-1,1,3,3-tetramethyl uronium hexafluorophosphate methanaminium (1.57 g, 4.13 mmol). After stirring 15 min at RT, (1R)-1,2,3,4-tetrahydro-N-methyl-1-naphthalenamine (0.60 g, 3.75 mmol) was added to the reaction mixture. After stirring overnight at RT, solvent was evaporated and the resulting brown oil was dissolved in ethylacetate (30 mL), washed with saturated aqueous sodium bicarbonate solution (50 mL), 1M HCl solution (50 mL), and brine (50 mL). The organic layer was dried over sodium sulfate, filtered, and evaporated under reduced pressure. The crude mixture was purified by column chromatography on silica gel (ethylacetate/cyclohexane 2:8 to 3:7) to give methyl-{3-[4-((R)-methyl-1,2,3,4-tetrahydronaphthalen-1-yl-carbamoyl)-thiazol-2-yl]-prop-2-ynyl}-carbamic acid tert-butyl ester (1.01 g, 61%). 1H-NMR (400 MHz, CDCl3): δ=7.75 (s, 1H (conformers)), 7.03-6.92 (m, 4H), 5.58-5.46 (m, 1H (conformers)), 4.18-4.09 (br, 2H), 2.75 (s, 3H (conformers)), 2.61 (s, 3H), 2.11-1.63 (m, 6H), 1.33 (s, 9H (conformers)). MS: m/z=462 (M+23). After stirring overnight at RT solvent was evaporated the resulting brown oil was dissolved in ethylacetate (30 mL) washed with saturated aqueous sodium bicarbonate solution (50 mL), 1M HCl solution (50 mL), and brine (50 mL) The organic layer was dried over sodium sulfate filtered evaporated under reduced pressure The crude mixture was purified by column chromatography on silica gel (ethylacetate/cyclohexane 2:8 to 3:7)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-[3-(tert-butoxycarbonyl-methyl-amino)-prop-1-ynyl]-thiazole-4-carboxylic acid (1.11 g, 3.75 mmol) in DMF (20 mL) was added diisopropylethylamine (1.93 mL, 11.3 mmol), followed by 2-(1H-7-azabenzotriazol-1-yl)-1,1,3,3-tetramethyl uronium hexafluorophosphate methanaminium (1.57 g, 4.13 mmol). After stirring 15 min at RT, (1R)-1,2,3,4-tetrahydro-N-methyl-1-naphthalenamine (0.60 g, 3.75 mmol) was added to the reaction mixture. After stirring overnight at RT, solvent was evaporated and the resulting brown oil was dissolved in ethylacetate (30 mL), washed with saturated aqueous sodium bicarbonate solution (50 mL), 1M HCl solution (50 mL), and brine (50 mL). The organic layer was dried over sodium sulfate, filtered, and evaporated under reduced pressure. The crude mixture was purified by column chromatography on silica gel (ethylacetate/cyclohexane 2:8 to 3:7) to give methyl-{3-[4-((R)-methyl-1,2,3,4-tetrahydronaphthalen-1-yl-carbamoyl)-thiazol-2-yl]-prop-2-ynyl}-carbamic acid tert-butyl ester (1.01 g, 61%). 1H-NMR (400 MHz, CDCl3): δ=7.75 (s, 1H (conformers)), 7.03-6.92 (m, 4H), 5.58-5.46 (m, 1H (conformers)), 4.18-4.09 (br, 2H), 2.75 (s, 3H (conformers)), 2.61 (s, 3H), 2.11-1.63 (m, 6H), 1.33 (s, 9H (conformers)). MS: m/z=462 (M+23). After stirring overnight at RT solvent was evaporated the resulting brown oil was dissolved in ethylacetate (30 mL) washed with saturated aqueous sodium bicarbonate solution (50 mL), 1M HCl solution (50 mL), and brine (50 mL) The organic layer was dried over sodium sulfate filtered evaporated under reduced pressure The crude mixture was purified by column chromatography on silica gel (ethylacetate/cyclohexane 2:8 to 3:7)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 3′,4′,5′,6′-tetrahydro-2′H-[2,4′]bipyridinyl-6,1′-dicarboxylic acid 1′-tert-butyl ester (150 mg, 0.49 mmol), methyl-(R)-1,2,3,4-tetrahydro-naphthalen-1-yl-amine (0.079 g, 0.49 mmol), and diisopropylethylamine (0.50 mL, 0.49 mmol) in DMF (10 mL) was added dropwise BOP (238 mg, 0.49 mmol) at RT. After stirring overnight at RT, the reaction mixture was poured on water (10 mL) and extracted with ethylacetate (20 mL). The aqueous phase was re-extracted with ethylacetate (20 mL). The combined organic layers were washed with aq. sat. sodium bicarbonate solution (30 mL), 1M HCl solution (30 mL) and brine (30 mL), dried over sodium sulfate, filtered, and evaporated under reduce pressure. The crude mixture was purified by column chromatography on silica gel (ethylacetate/hexane 4:1) to give 6-[methyl-(1,2,3,4-tetrahydro-naphthalen-1-yl)-carbamoyl]-3′,4′,5′,6′-tetrahydro-2′H-[2,4′]bipyridinyl-1′-carboxylic acid tert-butyl ester (215 mg, 97%). 1H-NMR (400 MHz, CDCl3): δ=1.47 (s, 9H), 1.64-2.05 (m, 8H), 2.18-2.22 (m, 1H), 2.72-2.81 (m, 4H), 2.82 (s, 3H), 4.15-4.25 (m, 2H), 5.15-5.20 (m, 1H), 7.18-7.25 (m, 5H), 7.53-7.71 (m, 1H), 7.73-7.74 (m, 1H). the reaction mixture was poured on water (10 mL) extracted with ethylacetate (20 mL) The aqueous phase was re-extracted with ethylacetate (20 mL) The combined organic layers were washed with aq. sat. sodium bicarbonate solution (30 mL), 1M HCl solution (30 mL) and brine (30 mL) dried over sodium sulfate filtered evaporated The crude mixture was purified by column chromatography on silica gel (ethylacetate/hexane 4:1)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 3′,4′,5′,6′-tetrahydro-2′H-[2,4′]bipyridinyl-6,1′-dicarboxylic acid 1′-tert-butyl ester (150 mg, 0.49 mmol), methyl-(R)-1,2,3,4-tetrahydro-naphthalen-1-yl-amine (0.079 g, 0.49 mmol), and diisopropylethylamine (0.50 mL, 0.49 mmol) in DMF (10 mL) was added dropwise BOP (238 mg, 0.49 mmol) at RT. After stirring overnight at RT, the reaction mixture was poured on water (10 mL) and extracted with ethylacetate (20 mL). The aqueous phase was re-extracted with ethylacetate (20 mL). The combined organic layers were washed with aq. sat. sodium bicarbonate solution (30 mL), 1M HCl solution (30 mL) and brine (30 mL), dried over sodium sulfate, filtered, and evaporated under reduce pressure. The crude mixture was purified by column chromatography on silica gel (ethylacetate/hexane 4:1) to give 6-[methyl-(1,2,3,4-tetrahydro-naphthalen-1-yl)-carbamoyl]-3′,4′,5′,6′-tetrahydro-2′H-[2,4′]bipyridinyl-1′-carboxylic acid tert-butyl ester (215 mg, 97%). 1H-NMR (400 MHz, CDCl3): δ=1.47 (s, 9H), 1.64-2.05 (m, 8H), 2.18-2.22 (m, 1H), 2.72-2.81 (m, 4H), 2.82 (s, 3H), 4.15-4.25 (m, 2H), 5.15-5.20 (m, 1H), 7.18-7.25 (m, 5H), 7.53-7.71 (m, 1H), 7.73-7.74 (m, 1H). the reaction mixture was poured on water (10 mL) extracted with ethylacetate (20 mL) The aqueous phase was re-extracted with ethylacetate (20 mL) The combined organic layers were washed with aq. sat. sodium bicarbonate solution (30 mL), 1M HCl solution (30 mL) and brine (30 mL) dried over sodium sulfate filtered evaporated The crude mixture was purified by column chromatography on silica gel (ethylacetate/hexane 4:1)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: By a procedure analogous to that of Example 32, Step D, 1-[1-[[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetyl]-4-piperidin yl]-1H-pyrazole-4-carboxylic acid (0.081 g, 0.21 mmol) (i.e. the product of Example 33, Step C) was reacted with oxalyl chloride (0.05 mL) and the resulting product was reacted with (R)—N-methyl-1,2,3,4-tetrahydronaphthalen-1-ylamine (0.038 g, 0.23 mmol) and triethylamine (0.038 mL, 0.27 mmol) to afford 0.073 g of the title compound, a compound of the present invention as an oil after purification by medium pressure liquid chromatography.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a slurry of 2-[1-[[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetyl]-4-piperidinyl]-2H-1,2,3-triazole-4-carboxylic acid (0.070 g, 0.18 mmol) (i.e. the product of Example 32, Step C) in dichloromethane (2 mL) was added oxalyl chloride (0.05 mL, 0.35 mmol) and one drop of N,N-dimethylformamide. After 45 minutes the reaction mixture was concentrated in vacuo and the resulting residue was dissolved in dichloromethane (10 mL). The reaction mixture was then added to a solution of (R)—N-methyl-1,2,3,4-tetrahydronaphthalen-1-ylamine (32 mg, 0.20 mmol) and triethylamine (0.033 mL, 0.24 mmol) in dichloromethane (2 mL) at 0° C. The reaction mixture was stirred at room temperature overnight. The organic layer was washed with saturated aqueous sodium bicarbonate, dried (Na2SO4) and the solvent was removed with a rotary evaporator. The residue was purified by medium pressure liquid chromatography (MPLC) using 35-60% ethyl acetate in hexanes as eluant to afford 74 mg of the title product, a compound of the present invention as an oil. After 45 minutes the reaction mixture was concentrated in vacuo the resulting residue was dissolved in dichloromethane (10 mL) The organic layer was washed with saturated aqueous sodium bicarbonate dried (Na2SO4) the solvent was removed with a rotary evaporator The residue was purified by medium pressure liquid chromatography (MPLC)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2-[4-[[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetyl]-1-piperazin yl]-4-thiazolecarboxylic acid (200 mg, 0.5 mmol) (i.e. the product of Example 30, Step D) was suspended in 5 mL of dry dichloromethane and treated with triethylamine (150 μl, 1.08 mmol) to give a homogeneous solution. To this reaction mixture was added O-benzotriazol-1-yl-N,N,N′,N′-tetramethyluronium hexafluorophosphate (HBTU, 210 mg, 0.55 mmol) followed by (1R)-1,2,3,4-tetrahydro-N-methyl-1-naphthalenamine (106 mg, 0.60 mmol) (i.e. the product of Example 6, Step A). The reaction mixture was stirred at ambient temperature for 3 h, passed through a Varian Chem Elut™ CE1010 column pretreated with 5 mL of 20% aqueous citric acid solution. The column was flushed with three column volumes of dichloromethane, concentrated and purified by silica gel chromatography eluting with ethyl acetate to give 223 mg of the title product, the compound of present invention as white foam. to give a homogeneous solution The column was flushed with three column volumes of dichloromethane concentrated purified by silica gel chromatography eluting with ethyl acetate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1-[1-[[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetyl]-4-piperidinyl]-1H-pyrazole-3-carboxylic acid (270 mg, 0.7 mmol) (i.e. the product of Example 18, Step E), N-(3-dimethylaminopropyl)-Y-ethylcarbodiimide hydrochloride (EDC) (147.61 mg, 0.77 mmol) and N-methylmorpholine (0.088 mL, 0.8 mmol) in 5 mL of dichloromethane was stirred at room temperature for 15 minutes. (1R)-1,2,3,4-tetrahydro-N-methyl-1-naphthalenamine (124.16 mg, 0.77 mmol) (i.e. the product of Example 6, Step A) was added and the reaction mixture was stirred at room temperature for 16 h. The reaction mixture was poured in water, and the organic layer was subsequently washed with water, 1 M aqueous hydrochloric acid, water, saturated aqueous solution of sodium bicarbonate, brine. The filtered reaction mixture was dried over magnesium sulfate and evaporated in vacuo. The crude product was purified by medium-pressure liquid chromatography on silica gel using 75-100 of ethyl acetate in hexanes as eluant to give 55 mg of the title compound, a compound of the present invention as an oil. the reaction mixture was stirred at room temperature for 16 h the organic layer was subsequently washed with water, 1 M aqueous hydrochloric acid, water, saturated aqueous solution of sodium bicarbonate, brine The filtered reaction mixture was dried over magnesium sulfate evaporated in vacuo The crude product was purified by medium-pressure liquid chromatography on silica gel using 75-100 of ethyl acetate in hexanes as eluant

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1-(1,1-dimethylethyl) 4-(4-carboxy-2-oxazolyl)-1-piperidinecarboxylate (600 mg, 2.02 mmol), 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (425.57 mg, 2.22 mmol) and N-methylmorpholine (224.55 mg, 2.22 mmol) in 4 mL dichloromethane was stirred for 15 minutes at room temperature. To the reaction mixture was added 424 mg (2.63 mmol) of (1R)-1,2,3,4-tetrahydro-N-methyl-1-naphthalenamine was added and the reaction mixture was stirred for 16 h. The reaction mixture was concentrated under reduced pressure, and the residue was purified by silica gel chromatography using 25-75% of ethyl acetate in hexanes as eluant to give 360 mg of the title compound as an oil. was added the reaction mixture was stirred for 16 h The reaction mixture was concentrated under reduced pressure the residue was purified by silica gel chromatography

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1-(1,1-dimethylethyl) 4-[4-carboxy-2-thiazolyl]-1-piperidinecarboxylate (i.e. the product of Example 1, Step B) (3.84 g, 12.29 mmol), 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (2.36 g, 12.29 mmol) and triethylamine (2.3 mL, 16.76 mmol) in 50 mL dichloromethane was stirred for 15 minutes at room temperature. (1R)-1,2,3,4-Tetrahydro-N-methyl-1-naphthalenamine (i.e. the product of Example 6, Step A) (2.18 g, 13.5 mmol) was added and the reaction mixture was stirred for 16 h. The reaction mixture was diluted with 20 mL of dichloromethane, washed with 1 N aqueous hydrochloric acid, water, saturated aqueous sodium bicarbonate solution, water and brine, dried over MgSO4 and concentrated under reduced pressure. The residue was purified by silica gel chromatography using 20% to 100% of ethyl acetate in hexanes to give 2.4 g of the title compound as an oil. the reaction mixture was stirred for 16 h washed with 1 N aqueous hydrochloric acid, water, saturated aqueous sodium bicarbonate solution, water and brine dried over MgSO4 concentrated under reduced pressure The residue was purified by silica gel chromatography