反应详情

(±)-(4R*,5R*)-5-{(1S*) [5-(3-aminophenyl) (2-thienyl)]hydroxymethyl}-1-methyl-4-phenylpyrrolidin-2-one was prepared from (±)-(4R*,5R*)-5-[(1S*)(5-bromo(2-thienyl))hydroxymethyl]-1-methyl-4-phenylpyrrolidin-2-one (Example 5, step 2) and 3-aminophenylboronic acid, using a procedure analogous to that described for Examples 5, step 3. A mixture of the resulting compound (0.2 g, 0.53 mmol) and 4-fluorophenylisocyanate (0.073 g, 0.53 mmol) in THF (5 mL) were heated at the reflux temperature for 4 h. The resulting mixture was treated with water and extracted with CH2Cl2. The organic layers were dried (MgSO4) and concentrated under reduced pressure. The crude product was purified by flash chromatography (EtOAc) to give (±)-(4R*,5R*)-5-{1(1S*)[5-(3-{[(4-fluorophenyl)amino]carbonylamino}phenyl)(2-thienyl)]hydroxymethyl}-1-methyl-4-phenylpyrrolidin-2-one (0.15 g, 55%) as an off-white solid: mp: 181° C.; TLC (EtOAc) Rf 0.26.

1. temperaturewere heated at the reflux temperature for 4 h
2. extractionextracted with CH2Cl2
3. dry with materialThe organic layers were dried (MgSO4)
4. concentrationconcentrated under reduced pressure
5. customThe crude product was purified by flash chromatography (EtOAc)