反应详情

Lithium aluminum hydride (1 M, 0.703 mL, 0.703 mmol) was added to a solution of N-({[1-(tert-butoxycarbonyl)piperidin-4-yl]amino}carbonyl)-O-[tert-butyl(diphenyl)silyl]serine (373 mg, 0.639 mmol) in tetrahydrofuran (20 mL) at −78° C. The reaction was quenched with saturated ammonium chloride solution and partitioned between dichloromethane and saturated sodium bicarbonate solution. The organic layer was dried over sodium sulfate, filtered, and concentrated. Purification by silica gel chromatography (1%→8% methanol {1% ammonium hydroxide}/dichloromethane) gave the title compound (100 mg). MS 556.3 (M+1)

1. customThe reaction was quenched with saturated ammonium chloride solution
2. custompartitioned between dichloromethane and saturated sodium bicarbonate solution
3. dry with materialThe organic layer was dried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated
6. customPurification by silica gel chromatography (1%→8% methanol {1% ammonium hydroxide}/dichloromethane)