Ditert-butyl 4-[[4-amino-4-methyl-7-[[4-methyl-1,7-bis[(2-methylpropan-2-yl)oxy]-1,7-dioxoheptan-4-yl]amino]-7-oxoheptanoyl]amino]-4-methylheptanedioate 、
9-芴甲基-N-琥珀酰亚胺基碳酸酯 在
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
以100%的产率得到ditert-butyl 4-[[4-(9H-fluoren-9-ylmethoxycarbonylamino)-4-methyl-7-[[4-methyl-1,7-bis[(2-methylpropan-2-yl)oxy]-1,7-dioxoheptan-4-yl]amino]-7-oxoheptanoyl]amino]-4-methylheptanedioate