(2S)-3-[(2-methylpropan-2-yl)oxycarbonyl]-1,3-thiazolidine-2-carboxylic acid

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

Procedure: {1-[6-(4-{6-[4-(2-tert-Butoxycarbonylamino-acetyl)-phenyl]-naphthalen-2-yl}-1H-imidazol-2-yl)-5-aza-spiro[2.4]heptane-5-carbonyl]-2-methyl-propyl}-carbamic acid methyl ester (395.0 mg, 0.581 mmol) was dissolved in DCM (4 mL) and HCl in dioxane (4M, 4 mL) was added and stirring at room temperature was continued. After 60 minutes, all volatiles were removed in vacuo. The crude material was used in the next step without further purification. The crude material was dissolved in DMF (2.0 mL) and DIEA (110.8 mg, 0.860 mmol) was added. A solution of N-Boc (S) thiazolidine-2-carboxylic acid (100.0 mg, 0.430 mmol), HATU (163.0 mg, 0.430 mmol) and DIEA (55.4 mg, 0.430 mmol) in DMF (1 mL) was added. The reaction was stirred at room temperature. After 20 minutes, the reaction was diluted with EtOAc and was washed with brine, sodium hydroxyl solution (1M), brine, and was dried over sodium sulfate. Filtration and removal of solvents in vacuo gave the crude material (350 mg), which was used in the next step without further purification. all volatiles were removed in vacuo The crude material was used in the next step without further purification The crude material was dissolved in DMF (2.0 mL) The reaction was stirred at room temperature After 20 minutes was washed with brine, sodium hydroxyl solution (1M), brine was dried over sodium sulfate Filtration and removal of solvents in vacuo

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

Procedure: (S)-Thiazolidine-2,3-dicarboxylic acid 3-tert-butyl ester (49.4 mg, 0.21 mmol) was dissolved in DMF (2 mL). DIEA (74 μL, 0.42 mmol) was added followed by HATU (80.7 mg, 0.21 mmol). The reaction was stirred at ambient temperature for 15 minutes. Then 4-(2-Amino-thiazol-4-yl)-N-cyclopropyl-benzamide (54.6 mg, 0.21 mmol) was added. The reaction was stirred at ambient temperature overnight and then heated to 50° C. for 7 hours. The reaction was cooled, filtered, and purified by reverse phase HPLC to give the desired product. Yield 30.5 mg. MS: 475.1 (M+H+); H1 NMR (DMSO-d6): δ(ppm) 0.54-0.75 (m, 4H), 1.22-1.47 (m, 9H), 2.79-2.90 (m, 1H), 3.05-3.25 (m, 2H), 3.55-3.75 (m, 1H), 5.33-5.50 (m, 2H), 7.78-7.98 (m, 5H), 8.40-8.48 (d, 1H), 12.50-12.59 (s, 1H). The reaction was stirred at ambient temperature overnight heated to 50° C. for 7 hours The reaction was cooled filtered purified by reverse phase HPLC

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

Procedure: (S)-Thiazolidine-2,3-dicarboxylic acid 3-tert-butyl ester (49.4 mg, 0.21 mmol) was dissolved in DMF (2 mL). DIEA (74 μL, 0.42 mmol) was added followed by HATU (80.7 mg, 0.21 mmol). The reaction was stirred at ambient temperature for 15 minutes. Then 4-(2-Amino-thiazol-4-yl)-N-cyclopropyl-benzamide (54.6 mg, 0.21 mmol) was added. The reaction was stirred at ambient temperature overnight and then heated to 50° C. for 7 hours. The reaction was cooled, filtered, and purified by reverse phase HPLC to give the desired product. Yield 30.5 mg. MS: 475.1 (M+H+); H1 NMR (DMSO-d6): δ(ppm) 0.54-0.75 (m, 4H), 1.22-1.47 (m, 9H), 2.79-2.90 (m, 1H), 3.05-3.25 (m, 2H), 3.55-3.75 (m, 1H), 5.33-5.50 (m, 2H), 7.78-7.98 (m, 5H), 8.40-8.48 (d, 1H), 12.50-12.59 (s, 1H). The reaction was stirred at ambient temperature overnight heated to 50° C. for 7 hours The reaction was cooled filtered purified by reverse phase HPLC

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

Procedure: {1-[6-(4-{6-[4-(2-tert-Butoxycarbonylamino-acetyl)-phenyl]-naphthalen-2-yl}-1H-imidazol-2-yl)-5-aza-spiro[2.4]heptane-5-carbonyl]-2-methyl-propyl}-carbamic acid methyl ester (395.0 mg, 0.581 mmol) was dissolved in DCM (4 mL) and HCl in dioxane (4M, 4 mL) was added and stirring at room temperature was continued. After 60 minutes, all volatiles were removed in vacuo. The crude material was used in the next step without further purification. The crude material was dissolved in DMF (2.0 mL) and DIEA (110.8 mg, 0.860 mmol) was added. A solution of N-Boc (S) thiazolidine-2-carboxylic acid (100.0 mg, 0.430 mmol), HATU (163.0 mg, 0.430 mmol) and DIEA (55.4 mg, 0.430 mmol) in DMF (1 mL) was added. The reaction was stirred at room temperature. After 20 minutes, the reaction was diluted with EtOAc and was washed with brine, sodium hydroxyl solution (1M), brine, and was dried over sodium sulfate. Filtration and removal of solvents in vacuo gave the crude material (350 mg), which was used in the next step without further purification. all volatiles were removed in vacuo The crude material was used in the next step without further purification The crude material was dissolved in DMF (2.0 mL) The reaction was stirred at room temperature After 20 minutes was washed with brine, sodium hydroxyl solution (1M), brine was dried over sodium sulfate Filtration and removal of solvents in vacuo

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

Procedure: {1-[6-(4-{6-[4-(2-tert-Butoxycarbonylamino-acetyl)-phenyl]-naphthalen-2-yl}-1H-imidazol-2-yl)-5-aza-spiro[2.4]heptane-5-carbonyl]-2-methyl-propyl}-carbamic acid methyl ester (395.0 mg, 0.581 mmol) was dissolved in DCM (4 mL) and HCl in dioxane (4M, 4 mL) was added and stirring at room temperature was continued. After 60 minutes, all volatiles were removed in vacuo. The crude material was used in the next step without further purification. The crude material was dissolved in DMF (2.0 mL) and DIEA (110.8 mg, 0.860 mmol) was added. A solution of N-Boc (S) thiazolidine-2-carboxylic acid (100.0 mg, 0.430 mmol), HATU (163.0 mg, 0.430 mmol) and DIEA (55.4 mg, 0.430 mmol) in DMF (1 mL) was added. The reaction was stirred at room temperature. After 20 minutes, the reaction was diluted with EtOAc and was washed with brine, sodium hydroxyl solution (1M), brine, and was dried over sodium sulfate. Filtration and removal of solvents in vacuo gave the crude material (350 mg), which was used in the next step without further purification. all volatiles were removed in vacuo The crude material was used in the next step without further purification The crude material was dissolved in DMF (2.0 mL) The reaction was stirred at room temperature After 20 minutes was washed with brine, sodium hydroxyl solution (1M), brine was dried over sodium sulfate Filtration and removal of solvents in vacuo

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

Procedure: {1-[6-(4-{6-[4-(2-tert-Butoxycarbonylamino-acetyl)-phenyl]-naphthalen-2-yl}-1H-imidazol-2-yl)-5-aza-spiro[2.4]heptane-5-carbonyl]-2-methyl-propyl}-carbamic acid methyl ester (395.0 mg, 0.581 mmol) was dissolved in DCM (4 mL) and HCl in dioxane (4M, 4 mL) was added and stirring at room temperature was continued. After 60 minutes, all volatiles were removed in vacuo. The crude material was used in the next step without further purification. The crude material was dissolved in DMF (2.0 mL) and DIEA (110.8 mg, 0.860 mmol) was added. A solution of N-Boc (S) thiazolidine-2-carboxylic acid (100.0 mg, 0.430 mmol), HATU (163.0 mg, 0.430 mmol) and DIEA (55.4 mg, 0.430 mmol) in DMF (1 mL) was added. The reaction was stirred at room temperature. After 20 minutes, the reaction was diluted with EtOAc and was washed with brine, sodium hydroxyl solution (1M), brine, and was dried over sodium sulfate. Filtration and removal of solvents in vacuo gave the crude material (350 mg), which was used in the next step without further purification. all volatiles were removed in vacuo The crude material was used in the next step without further purification The crude material was dissolved in DMF (2.0 mL) The reaction was stirred at room temperature After 20 minutes was washed with brine, sodium hydroxyl solution (1M), brine was dried over sodium sulfate Filtration and removal of solvents in vacuo

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

Procedure: {1-[6-(4-{6-[4-(2-tert-Butoxycarbonylamino-acetyl)-phenyl]-naphthalen-2-yl}-1H-imidazol-2-yl)-5-aza-spiro[2.4]heptane-5-carbonyl]-2-methyl-propyl}-carbamic acid methyl ester (395.0 mg, 0.581 mmol) was dissolved in DCM (4 mL) and HCl in dioxane (4M, 4 mL) was added and stirring at room temperature was continued. After 60 minutes, all volatiles were removed in vacuo. The crude material was used in the next step without further purification. The crude material was dissolved in DMF (2.0 mL) and DIEA (110.8 mg, 0.860 mmol) was added. A solution of N-Boc (S) thiazolidine-2-carboxylic acid (100.0 mg, 0.430 mmol), HATU (163.0 mg, 0.430 mmol) and DIEA (55.4 mg, 0.430 mmol) in DMF (1 mL) was added. The reaction was stirred at room temperature. After 20 minutes, the reaction was diluted with EtOAc and was washed with brine, sodium hydroxyl solution (1M), brine, and was dried over sodium sulfate. Filtration and removal of solvents in vacuo gave the crude material (350 mg), which was used in the next step without further purification. all volatiles were removed in vacuo The crude material was used in the next step without further purification The crude material was dissolved in DMF (2.0 mL) The reaction was stirred at room temperature After 20 minutes was washed with brine, sodium hydroxyl solution (1M), brine was dried over sodium sulfate Filtration and removal of solvents in vacuo

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

Procedure: {1-[6-(4-{6-[4-(2-tert-Butoxycarbonylamino-acetyl)-phenyl]-naphthalen-2-yl}-1H-imidazol-2-yl)-5-aza-spiro[2.4]heptane-5-carbonyl]-2-methyl-propyl}-carbamic acid methyl ester (395.0 mg, 0.581 mmol) was dissolved in DCM (4 mL) and HCl in dioxane (4M, 4 mL) was added and stirring at room temperature was continued. After 60 minutes, all volatiles were removed in vacuo. The crude material was used in the next step without further purification. The crude material was dissolved in DMF (2.0 mL) and DIEA (110.8 mg, 0.860 mmol) was added. A solution of N-Boc (S) thiazolidine-2-carboxylic acid (100.0 mg, 0.430 mmol), HATU (163.0 mg, 0.430 mmol) and DIEA (55.4 mg, 0.430 mmol) in DMF (1 mL) was added. The reaction was stirred at room temperature. After 20 minutes, the reaction was diluted with EtOAc and was washed with brine, sodium hydroxyl solution (1M), brine, and was dried over sodium sulfate. Filtration and removal of solvents in vacuo gave the crude material (350 mg), which was used in the next step without further purification. all volatiles were removed in vacuo The crude material was used in the next step without further purification The crude material was dissolved in DMF (2.0 mL) The reaction was stirred at room temperature After 20 minutes was washed with brine, sodium hydroxyl solution (1M), brine was dried over sodium sulfate Filtration and removal of solvents in vacuo

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

Procedure: {1-[6-(4-{6-[4-(2-tert-Butoxycarbonylamino-acetyl)-phenyl]-naphthalen-2-yl}-1H-imidazol-2-yl)-5-aza-spiro[2.4]heptane-5-carbonyl]-2-methyl-propyl}-carbamic acid methyl ester (395.0 mg, 0.581 mmol) was dissolved in DCM (4 mL) and HCl in dioxane (4M, 4 mL) was added and stirring at room temperature was continued. After 60 minutes, all volatiles were removed in vacuo. The crude material was used in the next step without further purification. The crude material was dissolved in DMF (2.0 mL) and DIEA (110.8 mg, 0.860 mmol) was added. A solution of N-Boc (S) thiazolidine-2-carboxylic acid (100.0 mg, 0.430 mmol), HATU (163.0 mg, 0.430 mmol) and DIEA (55.4 mg, 0.430 mmol) in DMF (1 mL) was added. The reaction was stirred at room temperature. After 20 minutes, the reaction was diluted with EtOAc and was washed with brine, sodium hydroxyl solution (1M), brine, and was dried over sodium sulfate. Filtration and removal of solvents in vacuo gave the crude material (350 mg), which was used in the next step without further purification. all volatiles were removed in vacuo The crude material was used in the next step without further purification The crude material was dissolved in DMF (2.0 mL) The reaction was stirred at room temperature After 20 minutes was washed with brine, sodium hydroxyl solution (1M), brine was dried over sodium sulfate Filtration and removal of solvents in vacuo

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

Procedure: {1-[6-(4-{6-[4-(2-tert-Butoxycarbonylamino-acetyl)-phenyl]-naphthalen-2-yl}-1H-imidazol-2-yl)-5-aza-spiro[2.4]heptane-5-carbonyl]-2-methyl-propyl}-carbamic acid methyl ester (395.0 mg, 0.581 mmol) was dissolved in DCM (4 mL) and HCl in dioxane (4M, 4 mL) was added and stirring at room temperature was continued. After 60 minutes, all volatiles were removed in vacuo. The crude material was used in the next step without further purification. The crude material was dissolved in DMF (2.0 mL) and DIEA (110.8 mg, 0.860 mmol) was added. A solution of N-Boc (S) thiazolidine-2-carboxylic acid (100.0 mg, 0.430 mmol), HATU (163.0 mg, 0.430 mmol) and DIEA (55.4 mg, 0.430 mmol) in DMF (1 mL) was added. The reaction was stirred at room temperature. After 20 minutes, the reaction was diluted with EtOAc and was washed with brine, sodium hydroxyl solution (1 M), brine, and was dried over sodium sulfate. Filtration and removal of solvents in vacuo gave the crude material (350 mg), which was used in the next step without further purification. all volatiles were removed in vacuo The crude material was used in the next step without further purification The crude material was dissolved in DMF (2.0 mL) The reaction was stirred at room temperature After 20 minutes was washed with brine, sodium hydroxyl solution (1 M), brine was dried over sodium sulfate Filtration and removal of solvents in vacuo

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

Procedure: (S)-Thiazolidine-2,3-dicarboxylic acid 3-tert-butyl ester (49.4 mg, 0.21 mmol) was dissolved in DMF (2 mL). DIEA (74 μL, 0.42 mmol) was added followed by HATU (80.7 mg, 0.21 mmol). The reaction was stirred at ambient temperature for 15 minutes. Then 4-(2-Amino-thiazol-4-yl)-N-cyclopropyl-benzamide (54.6 mg, 0.21 mmol) was added. The reaction was stirred at ambient temperature overnight and then heated to 50° C. for 7 hours. The reaction was cooled, filtered, and purified by reverse phase HPLC to give the desired product. Yield 30.5 mg. MS: 475.1 (M+H+); H1 NMR (DMSO-d6): δ(ppm) 0.54-0.75 (m, 4H), 1.22-1.47 (m, 9H), 2.79-2.90 (m, 1H), 3.05-3.25 (m, 2H), 3.55-3.75 (m, 1H), 5.33-5.50 (m, 2H), 7.78-7.98 (m, 5H), 8.40-8.48 (d, 1H), 12.50-12.59 (s, 1H). The reaction was stirred at ambient temperature overnight heated to 50° C. for 7 hours The reaction was cooled filtered purified by reverse phase HPLC

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

Procedure: {1-[6-(4-{6-[4-(2-tert-Butoxycarbonylamino-acetyl)-phenyl]-naphthalen-2-yl}-1H-imidazol-2-yl)-5-aza-spiro[2.4]heptane-5-carbonyl]-2-methyl-propyl}-carbamic acid methyl ester (395.0 mg, 0.581 mmol) was dissolved in DCM (4 mL) and HCl in dioxane (4M, 4 mL) was added and stirring at room temperature was continued. After 60 minutes, all volatiles were removed in vacuo. The crude material was used in the next step without further purification. The crude material was dissolved in DMF (2.0 mL) and DIEA (110.8 mg, 0.860 mmol) was added. A solution of N-Boc (S) thiazolidine-2-carboxylic acid (100.0 mg, 0.430 mmol), HATU (163.0 mg, 0.430 mmol) and DIEA (55.4 mg, 0.430 mmol) in DMF (1 mL) was added. The reaction was stirred at room temperature. After 20 minutes, the reaction was diluted with EtOAc and was washed with brine, sodium hydroxyl solution (1M), brine, and was dried over sodium sulfate. Filtration and removal of solvents in vacuo gave the crude material (350 mg), which was used in the next step without further purification. all volatiles were removed in vacuo The crude material was used in the next step without further purification The crude material was dissolved in DMF (2.0 mL) The reaction was stirred at room temperature After 20 minutes was washed with brine, sodium hydroxyl solution (1M), brine was dried over sodium sulfate Filtration and removal of solvents in vacuo