(2R)-2-hydroxypropanamide

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

Procedure: Alternatively, to a solution of (R)-2-hydroxy-propionamide (10 g, 0.11 mmol) and triethylamine (17.2 mL, 0.12 mmol) in THF (130 mL) at 0° C. was added dropwise, methanesulfonyl chloride (9.56 mL, 0.12 mmol) causing a thick white precipitate to form. The reaction mixture was stirred at RT for 2 hours. The reaction mixture was diluted with water (150 mL) and extracted with ethyl acetate (3×50 mL). The combined organic extracts were washed with brine, dried (MgSO4) and concentrated in vacuo. The resultant residue was triturated with TBME to yield methanesulfonic acid (R)-1-carbamoyl-ethyl ester as a white solid (13.1 g, 70%). 1H NMR (400 MHz, d6-DMSO) 7.56 (1H, br s), 7.41 (1H, br s), 4.91 (1H, t, J=6.6 Hz), 3.23 (3H, s), 1.44 (3H, d, J=6.6 Hz) to form extracted with ethyl acetate (3×50 mL) The combined organic extracts were washed with brine dried (MgSO4) concentrated in vacuo The resultant residue was triturated with TBME

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

Procedure: A mixture of (2R)-2-hydroxypropanamide (0.29 g, 3.3 mmol) and triethyloxonium tetrafluoroborate (0.61 g, 3.2 mmol) in THF (5.6 mL) was stirred at room temperature for 2 h. The solvent was removed and the residue dissolved in ethanol (2.4 mL) and added to a suspension of tert-butyl ({trans-4-[(6-aminothieno[3,2-b]pyridin-7-yl)amino]cyclohexyl}methyl)carbamate (0.30 g, 0.80 mmol) in ethanol (8.6 mL). The mixture was stirred at 85° C. for 2 h. The mixture was concentrated and purified with flash chromatography (0-10% methanol/dichloromethane) to give the desired product (0.21 g, 61%). LCMS calculated for C22H31N4O3S (M+H)+: m/z=431.2. Found: 431.1. The solvent was removed the residue dissolved in ethanol (2.4 mL) The mixture was stirred at 85° C. for 2 h The mixture was concentrated purified with flash chromatography (0-10% methanol/dichloromethane)

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

Procedure: A mixture of (2R)-2-hydroxypropanamide (0.29 g, 3.3 mmol) and triethyloxonium tetrafluoroborate (0.61 g, 3.2 mmol) in THF (5.6 mL) was stirred at room temperature for 2 h. The solvent was removed and the residue dissolved in ethanol (2.4 mL) and added to a suspension of tert-butyl ({trans-4-[(6-aminothieno[3,2-b]pyridin-7-yl)amino]cyclohexyl}methyl)carbamate (0.30 g, 0.80 mmol) in ethanol (8.6 mL). The mixture was stirred at 85° C. for 2 h. The mixture was concentrated and purified with flash chromatography (0-10% methanol/dichloromethane) to give the desired product (0.21 g, 61%). LCMS calculated for C22H31N4O3S (M+H)+: m/z=431.2. Found: 431.1. The solvent was removed the residue dissolved in ethanol (2.4 mL) The mixture was stirred at 85° C. for 2 h The mixture was concentrated purified with flash chromatography (0-10% methanol/dichloromethane)

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

Procedure: A mixture of (2R)-2-hydroxypropanamide (17.1 mg, 0.192 mmol) and triethyloxonium tetrafluoroborate (34.2 mg, 0.180 mmol) in tetrahydrofuran (0.36 mL) was stirred at room temperature for 75 min and then concentrated. The residue was dissolved in ethanol (0.14 mL), and this solution was then added to a solution of benzyl [(1R,2R,5S)-5-[(6-aminothieno[3,2-b]pyridin-7-yl)amino]-2-(cyanomethyl)cyclohexyl]carbamate (26 mg, 0.060 mmol) in ethanol (0.36 mL) in a vial. The resulting mixture was stirred at 80° C. overnight. After cooling, the mixture was concentrated and purified on silica gel, eluted with 0-10% MeOH in dichloromethane to give 18 mg of the desired product. LCMS calculated for C26H28N5O3S (M+H)+: m/z=490.2. Found: 490.0. concentrated The residue was dissolved in ethanol (0.14 mL) The resulting mixture was stirred at 80° C. overnight After cooling the mixture was concentrated purified on silica gel eluted with 0-10% MeOH in dichloromethane

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

Procedure: A mixture of (2R)-2-hydroxypropanamide (197 mg, 2.21 mmol) and triethyloxonium tetrafluoroborate (395 mg, 2.08 mmol) in tetrahydrofuran (4.0 mL) was stirred at room temperature for 75 min then concentrated. The residue was dissolved in ethanol (1.5 mL) and this solution was then added to a solution of tert-butyl (3S)-3-[(6-aminothieno[3,2-b]pyridin-7-yl)amino]piperidine-1-carboxylate (0.24 g, 0.69 mmol) in ethanol (3.5 mL) in a vial. The resulting mixture was stirred at 80° C. for 2 h. The solvent was evaporated and the crude purified on silica gel, eluted with 0-10% MeOH in dichloromethane to give 250 mg (86%) of the desired product. LCMS calculated for C20H27N4O3S (M+H)+: m/z=403.2. Found: 403.1. then concentrated The residue was dissolved in ethanol (1.5 mL) The resulting mixture was stirred at 80° C. for 2 h The solvent was evaporated the crude purified on silica gel eluted with 0-10% MeOH in dichloromethane

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

Procedure: A mixture of (2R)-2-hydroxypropanamide (197 mg, 2.21 mmol) and triethyloxonium tetrafluoroborate (395 mg, 2.08 mmol) in tetrahydrofuran (4.0 mL) was stirred at room temperature for 75 min then concentrated. The residue was dissolved in ethanol (1.5 mL) and this solution was then added to a solution of tert-butyl (3S)-3-[(6-aminothieno[3,2-b]pyridin-7-yl)amino]piperidine-1-carboxylate (0.24 g, 0.69 mmol) in ethanol (3.5 mL) in a vial. The resulting mixture was stirred at 80° C. for 2 h. The solvent was evaporated and the crude purified on silica gel, eluted with 0-10% MeOH in dichloromethane to give 250 mg (86%) of the desired product. LCMS calculated for C20H27N4O3S (M+H)+: m/z=403.2. Found: 403.1. then concentrated The residue was dissolved in ethanol (1.5 mL) The resulting mixture was stirred at 80° C. for 2 h The solvent was evaporated the crude purified on silica gel eluted with 0-10% MeOH in dichloromethane

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

Procedure: A mixture of (2R)-2-hydroxypropanamide (194 mg, 2.18 mmol) and triethyloxonium tetrafluoroborate (0.41 g, 2.2 mmol) in tetrahydrofuran (2 mL) was stirred at room temperature for 1 h and then concentrated. A mixture of 3-{3-[(6-aminothieno[3,2-b]pyridin-7-yl)amino]cyclohexyl}propanenitrile (131 mg, 0.436 mmol) and the above made reagent in ethanol (4.7 mL) was heated at reflux for 2 h. The mixture was filtered, diluted with MeOH and purified on prep-HPLC (XBridge C18 column, eluting with a gradient of acetonitrile/water containing 0.1% ammonium hydroxide, at flow rate of 60 mL/min) to give the desired product (60 mg, 39%). LCMS calculated for C19H23N4OS (M+H)+: m/z=355.2. Found: 355.0. concentrated at reflux for 2 h The mixture was filtered diluted with MeOH purified on prep-HPLC (XBridge C18 column eluting with a gradient of acetonitrile/water containing 0.1% ammonium hydroxide, at flow rate of 60 mL/min)

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

Procedure: A mixture of (2R)-2-hydroxypropanamide (170 mg, 1.9 mmol) and triethyloxonium tetrafluoroborate (0.36 g, 1.9 mmol) in tetrahydrofuran (2 mL) was stirred at room temperature for 1 h and then concentrated. A mixture of ethyl {trans-4-[(6-aminothieno[3,2-b]pyridin-7-yl)amino]cyclohexyl}acetate (150 mg, 0.45 mmol) and the above made reagent in ethanol (4.8 mL) was heated at reflux for 2 h. The mixture was concentrated and purified on silica gel column (eluting with 0-5% MeOH in methylene chloride) to give the desired product (0.15 g, 86%). LCMS calculated for C20H26N3O3S (M+H)+: m/z=388.2. Found: 388.1. concentrated at reflux for 2 h The mixture was concentrated purified on silica gel column (eluting with 0-5% MeOH in methylene chloride)

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

Procedure: A mixture of (2R)-2-hydroxypropanamide (320 mg, 3.6 mmol) and triethyloxonium tetrafluoroborate (0.69 g, 3.6 mmol) in tetrahydrofuran (3 mL) was stirred at room temperature for 1 h and then concentrated. A mixture of tert-butyl {4-[(6-aminothieno[3,2-b]pyridin-7-yl)amino]cyclohexyl}carbamate (191 mg, 0.527 mmol) and the above made reagent in ethanol (4.8 mL) was heated at reflux for 2 h. The mixture was concentrated and purified on silica gel column (eluting with 0-10% MeOH in methylene chloride) to give the desired product. LCMS calculated for C21H29N4O3S (M+H)+: m/z=417.2. Found: 417.0. concentrated at reflux for 2 h The mixture was concentrated purified on silica gel column (eluting with 0-10% MeOH in methylene chloride)

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

Procedure: A mixture of (2R)-2-hydroxypropanamide (320 mg, 3.6 mmol) and triethyloxonium tetrafluoroborate (0.69 g, 3.6 mmol) in tetrahydrofuran (3 mL) was stirred at room temperature for 1 h and then concentrated. A mixture of tert-butyl {4-[(6-aminothieno[3,2-b]pyridin-7-yl)amino]cyclohexyl}carbamate (191 mg, 0.527 mmol) and the above made reagent in ethanol (4.8 mL) was heated at reflux for 2 h. The mixture was concentrated and purified on silica gel column (eluting with 0-10% MeOH in methylene chloride) to give the desired product. LCMS calculated for C21H29N4O3S (M+H)+: m/z=417.2. Found: 417.0. concentrated at reflux for 2 h The mixture was concentrated purified on silica gel column (eluting with 0-10% MeOH in methylene chloride)

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

Procedure: A mixture of (2R)-2-hydroxypropanamide (131 mg, 1.47 mmol) and triethyloxonium tetrafluoroborate (263 mg, 1.38 mmol) in THF (2 mL) was stirred at room temperature for 2 h. The solvent was removed and the residue dissolved in ethanol (0.85 mL) and added to a suspension of {(5S)-5-[(6-aminothieno[3,2-b]pyridin-7-yl)amino]tetrahydro-2H-pyran-2-yl}methyl acetate (145 mg, 0.451 mmol) in ethanol (3.1 mL). The mixture was stirred at 80° C. for 1 h. The reaction was cooled to room temperature and diluted with water (1.0 mL). Lithium hydroxide (32.4 mg, 1.35 mmol) was added, and the mixture was stirred for 2 h. The reaction mixture was diluted with methanol and purified with prep-LCMS (XBridge C18 column, eluting with a gradient of acetonitrile/water containing 0.1% ammonium hydroxide, at flow rate of 60 mL/min) to give the desired product as white solid (95 mg, 63%). LCMS calculated for C16H20N3O3S (M+H)+: m/z=334.1. Found: 334.0. The solvent was removed the residue dissolved in ethanol (0.85 mL) The mixture was stirred at 80° C. for 1 h The reaction was cooled to room temperature the mixture was stirred for 2 h purified with prep-LCMS (XBridge C18 column eluting with a gradient of acetonitrile/water containing 0.1% ammonium hydroxide, at flow rate of 60 mL/min)

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

Procedure: A mixture of (2R)-2-hydroxypropanamide (0.468 g, 5.26 mmol) and triethyloxonium tetrafluoroborate (0.941 g, 4.95 mmol) in tetrahydrofuran (7.2 mL) was stirred at room temperature for 2 h. The solvent was removed and the residue dissolved in ethanol (3.0 mL) and added to a suspension of tert-butyl 4-[(6-aminothieno[3,2-b]pyridin-7-yl)amino]piperidine-1-carboxylate (0.57 g, 1.6 mmol) in ethanol (11 mL). The mixture was stirred at 80° C. for 1 h. The solvent was removed and the residue was purified on RP-HPLC (XBridge C18 column, eluting with a gradient of acetonitrile/water containing 0.1% ammonium hydroxide, at flow rate of 60 mL/min) to give the desired product (85 mg, 13%). LCMS calculated for C20H27N4O3S (M+H)+: m/z=403.2. Found: 403.2. The solvent was removed the residue dissolved in ethanol (3.0 mL) The mixture was stirred at 80° C. for 1 h The solvent was removed the residue was purified on RP-HPLC (XBridge C18 column eluting with a gradient of acetonitrile/water containing 0.1% ammonium hydroxide, at flow rate of 60 mL/min)