(7S,9R,2'R)-7-[methyl-2'-[N-phthalimidoamino]propionate]-9-methyl-1,4-dithia-8-azaspiro[5.4]decane 在
Amberlyst 15(R) 作用下,
以
氯仿 为溶剂,
反应 192.0h,
以100%的产率得到(2R,6S,8R)-2-methyl-9-oxo-8-[N-phthalimidoamino]spiro-[4,2'-(1',3'-dithiacyclopentyl)-1-azabicyclo[4.3.0]nonane]