Cl.[CH3:2][N:3]([CH3:33])[C:4]([C:6]1[N:27]([CH:28]2[CH2:32][CH2:31][CH2:30][CH2:29]2)[C:9]2[N:10]=[C:11]([NH:14][C:15]3[CH:20]=[CH:19][C:18]([N:21]4[CH2:26][CH2:25][NH:24][CH2:23][CH2:22]4)=[CH:17][N:16]=3)[N:12]=[CH:13][C:8]=2[CH:7]=1)=[O:5].[CH3:34][N:35]([CH3:40])[CH2:36][C:37](O)=[O:38].C(N(C(C)C)CC)(C)C.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.[B-](F)(F)(F)F>CN(C=O)C.CO>[CH3:2][N:3]([CH3:33])[C:4]([C:6]1[N:27]([CH:28]2[CH2:32][CH2:31][CH2:30][CH2:29]2)[C:9]2[N:10]=[C:11]([NH:14][C:15]3[CH:20]=[CH:19][C:18]([N:21]4[CH2:22][CH2:23][N:24]([C:37](=[O:38])[CH2:36][N:35]([CH3:40])[CH3:34])[CH2:25][CH2:26]4)=[CH:17][N:16]=3)[N:12]=[CH:13][C:8]=2[CH:7]=1)=[O:5]To a solution of 7-cyclopentyl-2-(5-piperazin-1-yl-pyridin-2-ylamino)-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide hydrochloride (80 mg, 0.170 mmol), N,N-dimethylglycine (18 mg, 0.170 mmol) and diisopropylethylamine (0.089 mL, 0.509 mmol) in DMF (1 mL) is added TBTU (55 mg, 0.170 mmol) and the reaction mixture is stirred at room temperature for 1 hour. Methanol (0.5 mL) is added and the reaction mixture purified by silica gel chromatography (gradient of 0-10% 2M NH3 in methanol/dichloromethane) to give 7-cyclopentyl-2-{5-[4-(2-dimethylamino-acetyl)-piperazin-1-yl]-pyridin-2-ylamino}-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide, which is further purified by trituration with acetonitrile, as an off white solid (69 mg, 78%).
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