Both dibenzyl N,N- diethylphosphoramidite and di -t-butyl N,N- diethylphosphoramidite are shown to be suitable reagents for the efficient 1H-tetrazole-catalysed 'phosphite-triester' phosphorylation of the protected serine derivative Boc-Ser-OCH2C6H4NO2-p. Both these reagents were also used for the phosphorylation of the protected serine derivative Boc-Glu ( OBut )-Ser- Leu-OBut, and subsequent hydrogenolytic treatment of Boc-Glu ( OBut )-Ser(PO3Bzl2)- Leu-OBut or acidolytic treatment of Boc-Glu ( OBut )-Ser(PO3But2)- Leu-OBut gave the O- phosphoseryl tripeptide Glu -Ser(PO3H2)- Leu in near-quantitive yield.
N,N-二乙基亚磷酰胺二苄酯和 N,N-二乙基亚磷酰胺二叔丁酯都被证明是高效的 1H 四氮唑催化的受保护丝氨酸衍生物 Boc-Ser-OCH2C6H4NO2-p 的 "亚磷酸三酯 "磷酸化的合适试剂。这两种试剂还用于受保护的丝氨酸衍生物 Boc-Glu ( OBut )-Ser- Leu-OBut 的磷酸化、随后对 Boc-Glu ( OBut )-Ser(PO3Bzl2)-Leu-OBut 进行氢解处理,或对 Boc-Glu ( OBut )-Ser(PO3But2)-Leu-OBut 进行酸解处理,得到 O-磷酸丝氨酰三肽 Glu -Ser(PO3H2)-Leu,产量接近定量。