Trifluoroacetic acid → 2-(N-(4-((4-(heptyloxy)benzoyl)oxy)benzyl)-5-(2-(4-methoxy-2-(trifluoromethyl)phenyl)acetamido)picolinamido)acetic acid

Participants

Reaction Steps

Prepared using General Procedure 8: To a stirred solution of 4-((N-(2-(tert-butoxy)-2-oxoethyl)-5-(2-(4-methoxy-2 (trifluoromethyl)phenyl)acetamido)picolinamido)methyl)phenyl 4-(heptyloxy)benzoate INT-16 (18 mg, 0.02 mmol) in DCM (1 mL) was added a solution of TFA (0.1 mL) and DCM (0.2 mL). The reaction mixture was stirred at room temperature for 12 h. The solvent was evaporated under high vacuum to give 12 mg (75%) of 2-(N-(4-((4-(heptyloxy)benzoyl)oxy)benzyl)-5-(2-(4-methoxy-2-(trifluoromethyl)phenyl)acetamido)picolinamido)acetic acid 298 as a white solid. LCMS-ESI (m/z) calculated for C39H40F3N3O8: 736; no m/z observed, tR=11.36 min (Method 2). 1H NMR (400 MHz, DMSO) δ 12.65 (s, 1H), 10.60 (s, 1H), 8.72 (dd, J=11.1, 2.1 Hz, 1H), 8.19-8.09 (m, 1H), 8.09-7.97 (m, 2H), 7.71 (dd, J=28.2, 8.7 Hz, 1H), 7.43 (dd, J=16.8, 8.3 Hz, 3H), 7.27-7.15 (m, 4H), 7.10 (d, J=8.9 Hz, 2H), 4.75 (d, J=23.0 Hz, 2H), 4.30 (s, 1H), 4.08 (t, J=6.5 Hz, 2H), 3.97 (s, 1H), 3.89 (s, 2H), 3.82 (d, J=2.0 Hz, 3H), 1.73 (dd, J=14.5, 6.6 Hz, 2H), 1.50-1.15 (m, 8H), 0.87 (t, J=6.9 Hz, 3H).

Provenance & Evidence