Use of 2-Cyano-1-<i>t</i>-butylethyl or 2-Cyano-1-(1,1-diethyl-3-butenyl)ethyl as a Phosphorus Protecting Group in Oligonucleotide Synthesis via<i>in situ</i>Phosphoramidite Methods
作者:Akinori Kitamura、Yoji Horie、Tadao Yoshida
DOI:10.1246/cl.2000.1134
日期:2000.10
situ by the use of 2-cyano-1-t-butylethyl or 2-cyano-1-(1,1-diethyl-3-butenyl)ethyl phosphorobisimidazolidite as a new phosphitylating reagent. The phosphorimidazolidites were found to be key intermediates for preparing 5′-O-protected nucleoside 3′-O-monoalkylphosphoramidites in situ useful in the solid-phase oligonucleotide synthesis, and for synthesizing conveniently 3′-OH free dinucleoside phosphates
2-氰基-1-叔丁基乙基或2-氰基-1-(1,1-二乙基-3-丁烯基)乙基3'-O-磷咪唑烷的5'-O-保护的核苷是通过使用原位制备的2-氰基-1-叔丁基乙基或2-氰基-1-(1,1-二乙基-3-丁烯基)乙基磷酰双咪唑烷酯作为一种新的亚磷酸化试剂。发现磷咪唑烷是用于原位制备 5'-O-保护的核苷 3'-O-单烷基亚磷酰胺的关键中间体,可用于固相寡核苷酸合成,并用于在溶液中方便地合成 3'-OH 游离磷酸二核苷和硫代磷酸酯。