1-methyl-2-oxabicyclo[3.1.1]heptane-5-carboxylic acid 、 rac-(3aR,6aR)-2-((2-methyl-6-(trifluoromethyl)pyridin-3-yl)sulfonyl)octahydropyrrolo[3,4-c]pyrrole hydrochloride 在
1-丙基磷酸酐 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以72 %的产率得到rac-((3aR,6aR)-5-((2-methyl-6-(trifluoromethyl)pyridin-3-yl)sulfonyl)hexahydropyrrolo[3,4-c]pyrrol-2(1H)-yl)(1-methyl-2-oxabicyclo[3.1.1]heptan-5-yl)methanone