[NH2:1][C@H:2]([C:4]1[N:9]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[C:8](=[O:16])[C:7]2=[C:17]([CH3:20])[CH:18]=[CH:19][N:6]2[N:5]=1)[CH3:3].Cl[C:22]1[C:23]2[C:30]([C:31]([O:33][CH2:34][C:35]3[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=3)=[O:32])=[CH:29][NH:28][C:24]=2[N:25]=[CH:26][N:27]=1.CCN(C(C)C)C(C)C>C(O)(C)(C)C>[CH3:20][C:17]1[CH:18]=[CH:19][N:6]2[C:7]=1[C:8](=[O:16])[N:9]([C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1)[C:4]([C@@H:2]([NH:1][C:22]1[C:23]3[C:30]([C:31]([O:33][CH2:34][C:35]4[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=4)=[O:32])=[CH:29][NH:28][C:24]=3[N:25]=[CH:26][N:27]=1)[CH3:3])=[N:5]2(S)-2-(1-Aminoethyl)-5-methyl-3-phenylpyrrolo[2,1-f][1,2,4]triazin-4(3H)-one (418 mg, 1.56 mmol) and benzyl 4-chloro-7H-pyrrolo[2,3-d]pyrimidine-5-carboxylate (500 mg, 1.74 mmol) were dissolved in tert-butanol (8 ml) and DIEA (2 ml, 11.45 mmol) was added. After stirring the mixture at 80° C. for 12 h, the solvent was evaporated under reduced pressure and the residue was suspended in water, basified with sodium carbonate and extracted with AcOEt (×3). The organic phase was successively washed with water and brine, dried over magnesium sulphate, filtered and the solvent evaporated under reduced pressure. The residue was purified using SP1® Purification System (0% to 50%, hexane-ethyl acetate) to obtain 560 mg (66% yield) of the title compound as a white solid. Purity 96%.
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