反应 #1269875

反应方程式

acetic anhydride

(2S)-2-amino-N-[(1S)-1-benzyl-2-({(1R)-2-cyclobutyl-1-[(3aS,4S,6S,7aR)-3a,5,5-trimethylhexahydro-4,6-methano-1,3,2-benzodioxaborol-2-yl]ethyl}amino)-2-oxoethyl]-4-phenylbutanamide

HCl

N,N-diisopropylethylamine

acetonitrile

→

product

收率 53.0%

(2S)-2-(acetylamino)-N-[(1S)-1-benzyl-2-({(1R)-2-cyclobutyl-1-[(3aS,4S,6S,7aR)-3a,5,5-trimethylhexahydro-4,6-methano-1,3,2-benzodioxaborol-2-yl]ethyl}amino)-2-oxoethyl]-4-phenylbutanamide

收率 53.0%

反应条件

后处理

1. 1
   过滤the precipitate was filtered
2. 2
   洗涤washed with Et2O

实验过程

Into a 20 mL scintillation vial was added (2S)-2-amino-N-[(1S)-1-benzyl-2-({(1R)-2-cyclobutyl-1-[(3aS,4S,6S,7aR)-3a,5,5-trimethylhexahydro-4,6-methano-1,3,2-benzodioxaborol-2-yl]ethyl}amino)-2-oxoethyl]-4-phenylbutanamide.HCl (52.0 mg, 0.0836 mmol), acetonitrile (5.20 mL, 0.0996 mol), acetic anhydride (8.68 μL, 0.092 mmol), N,N-diisopropylethylamine (36.4 μL, 0.209 mmol) and N,N-dimethylaminopyridine (0.0005 g, 0.004 mmol). The mixture was stirred overnight and the precipitate was filtered and washed with Et2O to give 0.028 g (53% yield) of product as a white solid.

来源