反应详情

To a solution of (R)-3-(5-amino-2-methyl-pyridin-4-ylamino)-3-phenyl-propionic acid ethyl ester (594 mg, 1.98 mmol) in THF (20 mL) was added CDI (483 mg, 2.98 mmol). The reaction mixture was stirred at room temperature for 20 hours. The reaction mixture was diluted with ethyl acetate and washed with water. The organic phase was dried over Na2SO4 and concentrated. The resulting residue was purified by silica gel prep TLC using 95:5 CH2Cl2:MeOH as an eluent to afford 484 mg (75%) of the title compound as light brown solid. LCMS, M++1, m/z: 326.85.

1. washwashed with water
2. dry with materialThe organic phase was dried over Na2SO4
3. concentrationconcentrated
4. customThe resulting residue was purified by silica gel prep TLC