1-环戊基乙胺 、 (6aR)-8-tert-butoxycarbonyl-3-(2-((tert-butoxycarbonyl)oxy)-6-fluorophenyl)-4-chloro-1-fluoro-6,6a,7,8,9,10-hexahydro-12H-pyrazino[2,1-c]pyrido[3,4-f][1,4]oxazepin-12-one 在
N,N-二异丙基乙胺 作用下,
以
乙腈 为溶剂,
以98 %的产率得到(6aR)-8-tert-butoxycarbonyl-1-(((R)-1-cyclopentylethyl)amino)-4-chloro-3-(2-fluoro-6-hydroxyphenyl)-6,6a,7,8,9,10-hexahydro-12H-pyrazino[2,1-c]pyrido[3,4-f][1,4]oxazepin-12-one