Reaction Steps
2″-({(4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-4-methyl-2-oxo-1,3-oxazolidin-3-yl}methyl)-4′-methoxy-2-methyl-4″-(trifluoromethyl)-1,1′:3′,1″-terphenyl-4-carboxylic acid (EXAMPLE 30, 200 mg, 0.281 mmol), methyl hydroxyacetate (0.022 mL, 0.281 mmol), N-[3-(dimethylamino)propyl]-N′-ethylcarbodiimide hydrochloride (81 mg, 0.422 mmol) and triethylamine (0.059 ml; 0.422 mmol) were stirred in DCM (2.811 mL) at room temperature overnight. LCMS of aliquot indicated formation of the desired product and complete consumption of starting material. Volatiles were evaporated from the reaction crude. The pot residue was purified by prep HPLC to afford a light yellow solid as the titled compound. LCMS (ESI) calc.=783.19; found=784.0 (M+1)+. 1H NMR (CDCl3, 400 MHz, 1:1 mixture of atropisomers): δ 7.99 (d, J=6.8 Hz, 1H), 7.92 (d, J=8 Hz, 1H), 7.85 (s, 1H), 7.72-7.68 (m, 1.5H), 7.67-7.61 (m, 2.5H), 7.45-7.36 (m, 2H), 7.32-7.26 (m, 1H), 7.13 (s, 1H), 7.08 (d, J=5.6 Hz, 0.5H), 7.06 (d, J=5.6 Hz, 0.5H), 5.59 (d, J=8 Hz, 0.5H), 5.30 (d, J=8 Hz, 0.5H), 4.97 (d, J=14 Hz, 0.5H), 4.93 (d, J=14 Hz, 0.5H), 4.87 (s, 2H), 4.16 (d, J=15.6 Hz, 0.5H), 3.95 (d, J=16 Hz, 0.5H), 3.86 (s, 3H), 3.80 (s, 3H), 3.80-3.75 (m, 1H), 2.37 (s, 1.5H), 2.32 (s, 1.5H), 0.54 (d, J=6.8 Hz, 1.5H), 0.42 (d, J=6.8 Hz, 1.5H).
