Triethylamine → HCID 68708584, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of (R)-2-tert-butoxycarbonylamino-2-methyl-3-phenylpropanal oxime (Intermediate L, 30 mg, 0.11 mmol) in 0.5 mL DMF, cooled to 5° C., was added a solution of N-bromosuccinimide from Step B (29 mg, 0.165 mmol) in 0.5 mL DMF dropwise. After stirring at 5° C. for 1 h, a solution of 3-(N-methyl-N-(methylsulfonyl)amino)-5-ethynyl-N—((R)-1-(4-fluorophenyl)ethyl)benzamide (124 mg, 0.33 mmol) and triethylamine (0.023 mL, 0.165 mmol) in 0.2 mL DMF was added. The reaction was stirred at rt for 1 week and then heated to 50° C. overnight. Purification by reverse phase preparative HPLC (5-95% CH3CN in water containing 0.1% TFA) gave 3-(N-methyl-N-(methylsulfonyl)amino)-5-(3-((R)-2-tert-butoxycarbonylamino-1-phenylpropan-2-yl)isoxazol-5-yl)-N—((R)-1-(4-fluorophenyl)ethyl)benzamide. 1H NMR (CDCl3) δ 8.02 (s, 1H), 7.90 (m, 1H), 7.86 (m, 1H), 7.38 (m, 2H), 7.26 (m, 3H), 7.08 (m, 4H), 6.60 (s, 1H), 6.44 (d, J=7.6 Hz, 1H), 5.31 (m, 1H), 5.01 (bs, 1H), 3.53 (d, J=12.9 Hz, 1H), 3.39 (s, 3H), 3.34 (m, 1H), 2.89 (s, 3H), 1.63 (m, 6H), 1.44 (s, 9H).

Provenance & Evidence