Diethyl 2-[(4,4',4"-trimethoxytrityl)oxymethyl]-2-hydroxymethylmalonate 、 Chloro bis[(n,n,-diisopropyl)amino]phosphite 、
N-(2-羟乙基)-4-甲氧基苯甲酰胺 在
Diethyl[[[tris(4-methoxyphenyl)methyl]oxy]methyl][[[[bis(1-methylethyl)amino][2-(4-methoxybenzamido)ethoxy]phosphino]oxy]methyl]propanedioate 作用下,
以
EtOAc hexane triethylamine 为溶剂,
以gave 5 (652 mg, 74.4%) as a colorless oil的产率得到Diethyl[[[tris(4-methoxyphenyl)methyl]oxy]methyl][[[[bis(1-methylethyl)amino][2-(4-methoxybenzamido)ethoxy]phosphino]oxy]methyl]propanedioate