2-[2-(S)-[Bis-(2-methylbenzyl)-amino]-3-(3,5-difluorophenyl)-1-(S)-hydroxypropyl]-pyrrole-1-carboxylic acid tert-butyl ester → 2-(R)-[2-(S)-[Bis-(2-methylbenzyl)-amino]-3-(3,5-difluorophenyl)-1-(S)-hydroxypropyl]-pyrrolidine-1-carboxylic acid tert-butyl ester

Participants

Reaction Steps

Add 2-[2-(S)-[bis-(2-methylbenzyl)-amino]-3-(3,5-difluorophenyl)-1-(S)-hydroxypropyl]-pyrrole-1-carboxylic acid tert-butyl ester (0.415 g, 0.74 mmol), 10% platinum on carbon (0.087 g) and methanol (15 mL) and hydrogenate at one atmosphere hydrogen gas for 1-8 h. Add filter agent and filter, concentrate and purify (silica gel chromatography, eluting with hexanes and ethyl acetate) to give the title compound as a white foam (0.116 g, 28%).

Provenance & Evidence