反应详情

(R/S)-2-Hydroxy-2-(4-(5-(3-phenyl-4-(trifluoromethyl)isoxazol-5-yl)-1,2,4-oxadiazol-3-yl)phenyl)acetic acid (Int-V, 20 mg, 0.046 mmol), (1H-indol-2-yl)methanamine (10.17 mg, 0.070 mmol), 4-methylmorpholine (18.76 mg, 0.185 mmol), and HATU (22.92 mg, 0.060 mmol) were added to DMF (1 mL). This was stirred for 1 h before it was purified by prep HPLC (YMC S5 ODS 5u 20×100 mm, gradient elution with Method 1—MeOH/water containing 0.1% trifluoroacetic acid as defined above, 0% B to 100% B over 10 min, 20 mL/min, 220 nM, product retention=12.3 min) to provide (R/S)-N-((1H-indol-2-yl)methyl)-2-hydroxy-2-(4-(5-(3-phenyl-4-(trifluoromethyl)isoxazol-5-yl)-1,2,4-oxadiazol-3-yl)phenyl)acetamide (13 mg, 0.02 mmol, 43.7% yield): LCMS=560.3 [M+H]+; 1H NMR (400 MHz, methanol-d4) δ ppm 8.15-8.20 (2 H, m), 7.55-7.75 (9 H, m), 7.27-7.46 (2 H, m), 6.92-7.08 (2 H, m), 6.29 (1 H, s), 5.20 (1 H, s), 4.48-4.64 (2 H, m); HPLC peak RT=10.7 min (Method A).

1. customwas purified by prep HPLC (YMC S5 ODS 5u 20×100 mm, gradient elution with Method 1—MeOH/water containing 0.1% trifluoroacetic acid as defined above, 0% B to 100% B over 10 min, 20 mL/min, 220 nM, product retention=12.3 min)