Trifluoroacetic acid → (2S,4S)-methyl 4-(4-amino-5-((3,5-dimethoxyphenyl)ethynyl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)pyrrolidine-2-carboxylate

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Reaction Steps

A solution of (2S,4S)-1-tert-butyl 2-methyl 4-(4-amino-5-((3,5-dimethoxyphenyl)ethynyl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)pyrrolidine-1,2-dicarboxylate (24 mg) obtained in Step 6 above in methylene chloride (2.0 ml) and TFA (2.0 ml) was stirred at room temperature for 30 minutes. The solvent was distilled off under reduced pressure, and the resulting residue was purified by basic silica gel column chromatography (developing solvent: chloroform/methanol). The title compound was thus obtained as a light-yellow, amorphous substance (11.9 mg). Physical properties: m/z [M+H]+ 422.1

Provenance & Evidence