benzyl 2-(5-(4'-(2-methyl-5-(trifluoromethyl)oxazole-4-carboxamido)-[1,1'-biphenyl]-4-yl)tetrahydro-2H-pyran-2-yl)acetate → 2-(5-(4'-(2-Methyl-5-(trifluoromethyl)oxazole-4-carboxamido)-[1,1'-biphenyl]-4-yl)tetrahydro-2H-pyran-2-yl)acetic acid

Participants

Reaction Steps

Benzyl 2-(5-(4′-(2-methyl-5-(trifluoromethyl)oxazole-4-carboxamido)-[1,1′-biphenyl]-4-yl)tetrahydro-2H-pyran-2-yl)acetate was dissolved in EtOAc and hydrogenated with 10% Pd(OH)2/C under H2 balloon for 30 min. The reaction mixture was filtered off to remove the catalyst and the filtrate was concentrated. The residue was purified by reverse HPLC (8 to 50% ACN-water (0.1% NH40H) with X-bridge C8 column) to give the title compound 93 mg (yield 80%) as a mixture of cis/trans isomer (ratio of 1:3). After chiral SFC separation (CL2-20×250 mm, isocratic 45% MeOH in CO2, 75% g/min flow, 220 nM UV) afforded the cis and trans enantiomes:

Provenance & Evidence