(S)-2-amino-N-((S)-5-((6-bromo-2-methoxynaphthalen-1-yl)methyl)-4-oxo-2,3,4,5-tetrahydrobenzo[b][1,4]oxazepin-3-yl)butanamide hydrochloride 在
silica 作用下,
以
methanol-dichloromethane 为溶剂,
反应 1.0h,
以to provide (S)-2-amino-N -((S)-5-((6-bromo-2-methoxynaphthalen-1-yl)methyl)-4-oxo-2,3,4,5-tetrahydrobenzo[b][1,4]oxazepin-3-yl)butanamide (264 mg) as a white foam的产率得到(S)-2-amino-N-((S)-5-((6-bromo-2-methoxynaphthalen-1-yl)methyl)-4-oxo-2,3,4,5-tetrahydrobenzo[b][1,4]oxazepin-3-yl)butanamide