反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
PROCEDURE
实验过程
To a 0° C. solution of (3S,4S)-5-acetyl-3-amino-4-methyl-1-((2-methylnaphthalen-1-yl)methyl)-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepine-7-carbonitrile hydrochloride (162 mg, 361 μmol) in DMF (1.2 ml) was added Boc-N-methyl-L-alanine (80.7 mg, 397 μmol), N,N-diisopropylethylamine (250 μl, 1.44 mmol), and HBTU (151 mg, 397 μmol). The reaction was stirred at rt for 30 min, then diluted with H2O and the solids were collected by vacuum filtration, taken up in EtOAc, washed with H2O, sat. aq. NaHCO3, and sat. aq. NaCl, dried over Na2SO4, filtered, and concentrated. The crude material was purified by flash chromatography to provide tert-butyl(S)-1-((3S,4S)-5-acetyl-7-cyano-4-methyl-1-((2-methylnaphthalen-1-yl)methyl)-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-3-ylamino)-1-oxopropan-2-yl(methyl)carbamate (189 mg, 88%) as a white solid. MS m/z 620 (MNa)+.
WORKUP
后处理
- filtrationthe solids were collected by vacuum filtration
- washwashed with H2O, sat. aq. NaHCO3, and sat. aq. NaCl
- dry with materialdried over Na2SO4
- filtrationfiltered
- concentrationconcentrated
- customThe crude material was purified by flash chromatography