Piperidine → {(S)-1-[(S)-2-((2S,4S)-4-Amino-2-benzylcarbamoyl-pyrrolidin-1-yl)-1-cyclohexyl-2-oxo-ethylcarbamoyl]-ethyl}-methyl-carbamic acid tert-butyl ester

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Reaction Steps

((3S,5S)-5-Benzylcarbamoyl-1-{(S)-2-[(S)-2-(tert-butoxycarbonyl-methyl-amino)-propionylamino]-2-cyclohexyl-acetyl}-pyrrolidin-3-yl)-carbamic acid 9H-fluoren-9-ylmethyl ester (100 mg, 0.13 mmol) was dissolved in DMF (0.9 mL) at room temperature and piperidine (0.1 mL) was added. The mixture was stirred at room temperature for 30 minutes, concentrated and the residue purified by silica gel chromatography to give the title compound as a white foam (71 mg, 52%).

Provenance & Evidence