(S)-3-amino-1-(biphenyl-4-ylmethyl)perhydroazepin-2-one hydrochloride 、
(6E)-6,7,8,9-tetradeoxy-8,8-dimethyl-2-O-methyl-3,5-O-(1-methylethylidene)-gulo-non-6-enonic acid lactone 在
sodium 2-ethylhexanoic acid 作用下,
以
四氢呋喃 为溶剂,
反应 118.0h,
以91%的产率得到(R)-N-[(S)-1-(biphenyl-4-yl-methyl)-2-oxoperhydroazepin-3-yl]-2-[(4R,5S,6R)-6-((E)-3,3-dimethylbut-1-enyl)-5-hydroxy-2,2-dimethyl-1,3-dioxan-4-yl]-2-methoxyacetamide