甲胺 、
(S)-2-Methyl-butyric acid (1S,3R,7S,8S,8aR)-8-(2-{(4R,6R)-3-[2-(4-hydroxy-3-methoxy-phenyl)-ethyl]-4-methoxycarbonylmethyl-2-oxo-[1,3]oxazinan-6-yl}-ethyl)-3,7-dimethyl-1,2,3,7,8,8a-hexahydro-naphthalen-1-yl ester 以
甲醇 为溶剂,
以85%的产率得到[(1S,3R,7S,8S,8aR)-8-[2-[(4R,6R)-3-[2-(4-hydroxy-3-methoxyphenyl)ethyl]-4-[2-(methylamino)-2-oxoethyl]-2-oxo-1,3-oxazinan-6-yl]ethyl]-3,7-dimethyl-1,2,3,7,8,8a-hexahydronaphthalen-1-yl] (2S)-2-methylbutanoate