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