Dimethylformamide dimethyl acetal → (S)-N-(3-bromophenyl)-N'-(N-((dimethylamino)methylene)sulfamoyl)-2-methyl-4-(5-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperazine-1-carboximidamide

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Reaction Steps

Crude (S)—N-(3-bromophenyl)-2-methyl-4-(5-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-N′-sulfamoylpiperazine-1-carboximidamide from Example 20, step C, (˜25 mg, 0.068 mmol) was dissolved in MeOH (0.5 ml) and N,N-dimethylformamide dimethyl acetal (7 μl) added. The mixture was stirred at room temperature for 20 minutes and then concentrated. The mixture was purified by preparative HPLC to afford the desired compound (5 mg, 0.0088 mmol, 13%) as a white solid.

Provenance & Evidence