(R)-2-acetoxy-2-((R)-4-(2-methyl-3-oxoisoindolin-5-yl)-3-oxomorpholin-2-yl)acetic acid 、
6-氨基-2-N-BOC-1,2,3,4-四氢-异喹啉 以to afford compound 72-1 (52 mg) as a light yellow solid的产率得到tert-butyl 6-((R)-2-acetoxy-2-((R)-4-(2-methyl-3-oxoisoindolin-5-yl)-3-oxomorpholin-2-yl)acetamido)-3,4-dihydroisoquinoline-2(1H)-carboxylate