反应详情

2-[(Morpholine-4-carbonyl)-amino]-3-phenylmethanesulfonyl-propionic acid (50 mg, 0. 14 mmol), N-(3-amino-2-hydroxy-propyl)-benzenesulfonamide TFA salt (60 mg, 0.17 mmol), EDC (100 mg, 0.52 mmol), and HOBt (100 mg, 0.64 mmol) were combined. DMF (3 mL) was added and then 4-methylmorpholine (0.3 mL). The mixture was stirred at ambient temperature for 3 hours. After dilution with ethyl acetate (100 mL) the solution was washed with 1N HCl, saturated aqueous NaHCO3 and brine, dried with MgSO4 and evaporated under vacuum. The residue was dissolved in acetone (5 mL). Jones reagent was added until the orange color persisted. The mixture was stirred for 2 hours, quenched with isopropanol, and diluted with ethyl acetate (100 mL). The solution was washed with water, saturated aqueous NaHCO3 and brine, dried with MgSO4 and evaporated under vacuum. The crude product was recrystallized from ethyl acetate/diethyl ether to give morpholine-4-carboxylic acid [1-(3-benzenesulfonylamino-2-oxo-propylcarbamoyl)-2-phenylmethanesulfonyl-ethyl]-amide as white solid (19 mg); 1H NMR: (DMSO) 8.17 (t, J=5.7 Hz, 1H), 7.93 (t, J=5.9 Hz, 1H), 7.76–7.48 (m, 5H), 7.36–7.29 (m, 5H), 7.05 (d, J=8.1 Hz, 1H), 4.68–4.59 (m, 1H), 4.45 (s, 2H), 3.89 (d, J=5.7 Hz, 2H), 3.79–3,75 (m, 2H), 3.56–3.22 (m, 10H); MS: (M+H)+ 567.

1. washAfter dilution with ethyl acetate (100 mL) the solution was washed with 1N HCl, saturated aqueous NaHCO3 and brine
2. dry with materialdried with MgSO4
3. customevaporated under vacuum
4. dissolutionThe residue was dissolved in acetone (5 mL)
5. additionJones reagent was added until the orange color
6. stirringThe mixture was stirred for 2 hours
7. customquenched with isopropanol
8. additiondiluted with ethyl acetate (100 mL)
9. washThe solution was washed with water, saturated aqueous NaHCO3 and brine
10. dry with materialdried with MgSO4
11. customevaporated under vacuum
12. customThe crude product was recrystallized from ethyl acetate/diethyl ether