反应详情

Prepared using General Procedure 9. To a stirring solution of tert-butyl 2-(4-(2-(2,5-dimethoxyphenyl)acetamido)-N-(4-(3-(4′-methyl-[1,1′-biphenyl]-4-yl)-1,2,4-oxadiazol-5-yl)benzyl)benzamido)acetate INT-66 (45 mg, 0.060 mmol) in THF (2 mL) and MeOH (0.25 mL) was added 1 M LiOH (120 μL, 0.120 mmol). The reaction mixture was stirred at room temperature for 20 h and a precipitate was formed. The mixture was filtered under vacuum and the captured solid washed with diethyl ether (5 mL). The captured solid was dried in a vacuum oven to provide 20 mg (48%) of 2-(4-(2-(2,6-dimethoxyphenyl)acetamido)-N-(4-(3-(4′-methyl-[1,1′-biphenyl]-4-yl)-1,2,4-oxadiazol-5-yl)benzyl)benzamido)acetic acid 458. LCMS-ESI (m/z) calculated for C41H36N4O7: 696; found 697 [M+H]+, tR=9.08 min (Method 9). 1H NMR (400 MHz, DMSO) δ 9.70 (s, 1H), 8.22-8.12 (m, 4H), 7.92-7.83 (m, 2H), 7.70-7.64 (m, 2H), 7.63-7.54 (m, 4H), 7.53-7.46 (m, 2H), 7.33 (d, J=7.9 Hz, 2H), 7.22 (t, J=8.3 Hz, 1H), 6.67 (d, J=8.3 Hz, 2H), 4.80 (s, 2H), 3.78 (s, 6H), 3.67 (s, 2H), 3.47 (s, 2H), 2.39 (s, 3H).

1. customPrepared
2. customa precipitate was formed
3. filtrationThe mixture was filtered under vacuum
4. washthe captured solid washed with diethyl ether (5 mL)
5. customThe captured solid was dried in a vacuum oven