(2S,3S,3aS,7aR)-methyl 4-((R)-(tert-butylcarbamoyl)(4-chlorophenyl)methyl)-2,3,3a,4,5,7a-hexahydro-2,6-divinylfuro[3,2-b]pyridine-3-carboxylate 、
N-苄基马来酰亚胺 以
二氯甲烷 为溶剂,
反应 24.0h,
以78%的产率得到(2S,3S,3aS,8S,9R,9aS,9bR)-N-benzyl-4-((R)-(tert-butylcarbamoyl)(4-chlorophenyl)methyl)-3-(methoxycarbonyl)-2,3,3a,4,5,7,8,9,9a,9b-decahydro-2-vinylfuro[3,2-c]isoquinoline-8,9-carboximide