2-aminoethanesulfonamide

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A reaction flask was charged with copper(I) iodide (268 mg, 1.41 mmol), sarcosine (N-methyl glycine) (188 mg, 2.11 mmol), 2-amino-ethanesulfonic acid amide (1.80 g, 11.2 mmol), cis-1-(4-fluoro-benzyl)-4-hydroxy-3-(7-iodo-1,1-dioxo-1,4-dihydro-1λ6-benzo[1,2,4]thiadiazin-3-yl)-1,4a,5,6,7,7a-hexahydro-[1]pyrindin-2-one (1.0 g, 1.76 mmol) and potassium phosphate (2.61 g, 12.32 mmol). The flask was degassed and backfilled with nitrogen, and then anhydrous N,N-dimethylformamide (16 mL) was added. The resulting suspension was vigorously stirred at 100° C. for 2 h and then at 120° C. for 1.5 h, cooled to 25° C., passed through a plug of Celite and rinsed with 10% methanol-dichloromethane. The filtrate was concentrated in vacuo, and the residue was purified by prep-HPLC [Column ODS-A 5μ 100 Å, 150×21.2 mm, 5 micron, 30%-100% in 13.5 min @ 22 mL/min flow rate, 0.05% trifluoroacetic acid in acetonitrile/0.05% trifluoroacetic acid in water] to afford the desired product, cis-2-amino-ethanesulfonic acid {3-[1-(4-fluoro-benzyl)-4-hydroxy-2-oxo-2,4a,5,6,7,7a-hexahydro-1H-[1]pyrindin-3-yl]-1,1-dioxo-1,4-dihydro-1λ6-benzo[1,2,4]thiadiazin-7-yl}-amide (100 mg, 0.178 mmol, 10%), as a yellow solid. 1H NMR (400 MHz, DMSO-d6) δ: 1.52 (3H, m), 1.99 (2H, m), 2.06 (1H, m), 3.17 (2H, m), 3.30 (1H, m), 3.46 (2H, t, J=6.8 Hz), 3.86 (1H, bs), 4.48 (1H, bs), 4.90 (1H, d, J=14.8 Hz), 7.16 (2H, m), 7.39 (2H, m), 7.51 (1H, m), 7.61 (2H, m), 7.82 (3H, s), 10.55 (1H, s). LC-MS (ESI) calcd for C24H26FN5O6S2 563.13, found 564.2 [M+H+]. The flask was degassed anhydrous N,N-dimethylformamide (16 mL) was added at 120° C. for 1.5 h cooled to 25° C. rinsed with 10% methanol-dichloromethane The filtrate was concentrated in vacuo the residue was purified by prep-HPLC [Column ODS-A 5μ 100 Å, 150×21.2 mm, 5 micron, 30%-100% in 13.5 min @ 22 mL/min flow rate, 0.05% trifluoroacetic acid in acetonitrile/0.05% trifluoroacetic acid in water]

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A reaction flask was charged with copper(I) iodide (268 mg, 1.41 mmol), sarcosine (N-methyl glycine) (188 mg, 2.11 mmol), 2-amino-ethanesulfonic acid amide (1.80 g, 11.2 mmol), cis-1-(4-fluoro-benzyl)-4-hydroxy-3-(7-iodo-1,1-dioxo-1,4-dihydro-1λ6-benzo[1,2,4]thiadiazin-3-yl)-1,4a,5,6,7,7a-hexahydro-[1]pyrindin-2-one (1.0 g, 1.76 mmol) and potassium phosphate (2.61 g, 12.32 mmol). The flask was degassed and backfilled with nitrogen, and then anhydrous N,N-dimethylformamide (16 mL) was added. The resulting suspension was vigorously stirred at 100° C. for 2 h and then at 120° C. for 1.5 h, cooled to 25° C., passed through a plug of Celite and rinsed with 10% methanol-dichloromethane. The filtrate was concentrated in vacuo, and the residue was purified by prep-HPLC [Column ODS-A 5μ 100 Å, 150×21.2 mm, 5 micron, 30%-100% in 13.5 min @ 22 mL/min flow rate, 0.05% trifluoroacetic acid in acetonitrile/0.05% trifluoroacetic acid in water] to afford the desired product, cis-2-amino-ethanesulfonic acid {3-[1-(4-fluoro-benzyl)-4-hydroxy-2-oxo-2,4a,5,6,7,7a-hexahydro-1H-[1]pyrindin-3-yl]-1,1-dioxo-1,4-dihydro-1λ6-benzo[1,2,4]thiadiazin-7-yl}-amide (100 mg, 0.178 mmol, 10%), as a yellow solid. 1H NMR (400 MHz, DMSO-d6) δ: 1.52 (3H, m), 1.99 (2H, m), 2.06 (1H, m), 3.17 (2H, m), 3.30 (1H, m), 3.46 (2H, t, J=6.8 Hz), 3.86 (1H, bs), 4.48 (1H, bs), 4.90 (1H, d, J=14.8 Hz), 7.16 (2H, m), 7.39 (2H, m), 7.51 (1H, m), 7.61 (2H, m), 7.82 (3H, s), 10.55 (1H, s). LC-MS (ESI) calcd for C24H26FN5O6S2 563.13, found 564.2 [M+H+]. The flask was degassed anhydrous N,N-dimethylformamide (16 mL) was added at 120° C. for 1.5 h cooled to 25° C. rinsed with 10% methanol-dichloromethane The filtrate was concentrated in vacuo the residue was purified by prep-HPLC [Column ODS-A 5μ 100 Å, 150×21.2 mm, 5 micron, 30%-100% in 13.5 min @ 22 mL/min flow rate, 0.05% trifluoroacetic acid in acetonitrile/0.05% trifluoroacetic acid in water]

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

Procedure: To a solution of (3S,3aR)-2-(3-chloro-4-cyanophenyl)-3-cyclopentyl-3,3a,4,5-tetrahydro-2H-benzo[g]indazole-7-carboxylic acid, Example 15 (100 mg, 0.24 mmol) in N,N-dimethylformamide (3 mL) was added 1-hydroxybenzotriazole (48 mg, 0.36 mmol), triethylamine (0.07 mL, 0.48 mmol) and O-benzotriazol-1-yl-N,N,N′,N′-tetramethyluronium tetrafluoroborate (115 mg, 0.36 mmol). The solution was stirred for fifteen minutes followed by addition of 2-aminoethanesulfonamide (44 mg, 0.36 mmol). The solution was stirred for twenty hours at ambient temperature. The reaction was partitioned between ethyl acetate and water. The organic layer was washed with water and brine and dried over magnesium sulfate. Chromatography (reverse phase, acetonitrile/water) provided (3S,3aR)-2-(3-chloro-4-cyanophenyl)-3-cyclopentyl-N-(2-sulfamoylethyl)-3,3a,4,5-tetrahydro-2H-benzo[g]indazole-7-carboxamide (yellow solid, 10 mg, 8% yield). LC/MS on 4.6×50 mm C-18 column, tR=5.80 minutes (10 to 90% acetonitrile/water over 6 minutes at 2 mL/minute with detection 254 nm, at 50° C.); ES-MS m/z 526 (M+H). The solution was stirred for twenty hours at ambient temperature The reaction was partitioned between ethyl acetate and water The organic layer was washed with water and brine dried over magnesium sulfate

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

Procedure: To a solution of (3S,3aR)-2-(3-chloro-4-cyanophenyl)-3-cyclopentyl-3,3a,4,5-tetrahydro-2H-benzo[g]indazole-7-carboxylic acid, Example 15 (100 mg, 0.24 mmol) in N,N-dimethylformamide (3 mL) was added 1-hydroxybenzotriazole (48 mg, 0.36 mmol), triethylamine (0.07 mL, 0.48 mmol) and O-benzotriazol-1-yl-N,N,N′,N′-tetramethyluronium tetrafluoroborate (115 mg, 0.36 mmol). The solution was stirred for fifteen minutes followed by addition of 2-aminoethanesulfonamide (44 mg, 0.36 mmol). The solution was stirred for twenty hours at ambient temperature. The reaction was partitioned between ethyl acetate and water. The organic layer was washed with water and brine and dried over magnesium sulfate. Chromatography (reverse phase, acetonitrile/water) provided (3S,3aR)-2-(3-chloro-4-cyanophenyl)-3-cyclopentyl-N-(2-sulfamoylethyl)-3,3a,4,5-tetrahydro-2H-benzo[g]indazole-7-carboxamide (yellow solid, 10 mg, 8% yield). LC/MS on 4.6×50 mm C-18 column, tR=5.80 minutes (10 to 90% acetonitrile/water over 6 minutes at 2 mL/minute with detection 254 nm, at 50° C.); ES-MS m/z 526 (M+H). The solution was stirred for twenty hours at ambient temperature The reaction was partitioned between ethyl acetate and water The organic layer was washed with water and brine dried over magnesium sulfate

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

Procedure: To a solution of 2-phenyl-pyrimidine-5-carboxylic acid chloride (1.51 mmol) and 2-amino-ethanesulfonic acid amide (1.51 mmol) in DCM (15 mL) is added diisopropylethylamine (4.53 mmol). The mixture is stirred at room temperature overnight. The mixture is concentrated in vacuo. The residue is washed with water and DCM to afford 2-phenyl-pyrimidine-5-carboxylic acid (2-sulfamoyl-ethyl)-amide as a solid. MS: 307 (M+H); 1H NMR (300 MHz, DMSO-d6): δ 3.25 (q, 2H), 3.67 (m, 2H), 6.93 (s, N—H), 7.47-7.60 (m, 3H), 8.36-8.48 (m, 2H), 8.92-9.15 (m, N—H), 9.16-9.36 (m, 2H); IC50=55 nM. The mixture is concentrated in vacuo The residue is washed with water and DCM

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

Procedure: To a solution of 2-phenyl-pyrimidine-5-carboxylic acid chloride (1.51 mmol) and 2-amino-ethanesulfonic acid amide (1.51 mmol) in DCM (15 mL) is added diisopropylethylamine (4.53 mmol). The mixture is stirred at room temperature overnight. The mixture is concentrated in vacuo. The residue is washed with water and DCM to afford 2-phenyl-pyrimidine-5-carboxylic acid (2-sulfamoyl-ethyl)-amide as a solid. MS: 307 (M+H); 1H NMR (300 MHz, DMSO-d6): δ 3.25 (q, 2H), 3.67 (m, 2H), 6.93 (s, N—H), 7.47-7.60 (m, 3H), 8.36-8.48 (m, 2H), 8.92-9.15 (m, N—H), 9.16-9.36 (m, 2H); IC50=55 nM. The mixture is concentrated in vacuo The residue is washed with water and DCM

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: 4-(4-(1-(4-chlorophenyl)cyclopropylamino)-6-(2,2,2-trifluoroethoxy)-1,3,5-triazin-2-ylamino)benzoic acid (500 mg, 1.042 mmol), 2-aminoethanesulfonamide (142 mg, 1.146 mmol), HATU (594 mg, 1.563 mmol), and Hunig's Base (0.910 mL, 5.21 mmol) were stirred in DCM (Volume: 5 mL) for 16 h. The solvent was removed and the crude material was purified by silica gel chromatography using EtOAc to give 4-(4-(1-(4-chlorophenyl)cyclopropylamino)-6-(2,2,2-trifluoroethoxy)-1,3,5-triazin-2-ylamino)-N-(2-sulfamoylethyl)benzamide (150 mg). 1H NMR (400 MHz, MeOD) δ ppm 1.31-1.42 (m, 4H), 3.34-3.40 (m, 2H), 3.79-3.89 (m, 2H), 4.86-4.92 (m, 2H), 7.20-7.33 (m, 4H), 7.58-7.71 (m, 3H), 7.76-7.89 (m, 1H); LC-MS (Condition A), MS m/z (M++H) 585.9. The solvent was removed the crude material was purified by silica gel chromatography