(E)-ethyl 3-(2-(((tert-butoxycarbonyl)((R)-1-(naphthalen-1-yl)ethyl)amino)methyl)-4-methyl-3,4-dihydro-2H-benzo[b][1,4]oxazin-7-yl)acrylate 在
5%-palladium/activated carbon
氢气 作用下,
以
甲醇 为溶剂,
以94%的产率得到ethyl 3-(2-(((tert-butoxycarbonyl)((R)-1-(naphthalen-1-yl)ethyl)amino)methyl)-4-methyl-3,4-dihydro-2H-benzo[b][1,4]oxazin-7-yl)propanoate