Enzymatic regioselective deacylation of 2′, 3′, 5′-tri-O-acylribonucleosides: Enzymatic synthesis of 2′, 3′-di-O-acylribonucleosides
摘要:
A simple and convenient method was developed for the synthesis of 2'.3'-di-O-acetylribonucleoside in good yields by the regioselective enzymatic hydrolysis at the primary hydroxyl group of 2',3',5'- tri-O-acetylribonucleosides.
Synthesis of Nucleoside Triphosphates from 2′-3′-Protected Nucleosides Using Trimetaphosphate
作者:Samy Mohamady、Scott D. Taylor
DOI:10.1021/acs.orglett.5b03624
日期:2016.2.5
Chemists have been attempting to triphosphorylate nucleosides and other alcohols using trimetaphosphate (TriMP) since the 1960s. However, this route appears to have been abandoned due to poor yields. The first practical syntheses of nucleoside triphosphates (NTPs) are reported using TriMP as the key reagent. This was achieved by reacting the tetrabutylammonium salt of TriMP with mesitylenesulfonyl
could be removed from 2′-O-cyanoethylated ribonucleoside derivatives by treatment with Bu4NF. This finding was successfully applied to the synthesis of oligoribonucleotides via their 2′-O-cyanoethylated derivatives as key intermediates where a cyanoethyl group was used as the 2′-hydroxyl protecting group. The rate of condensation using this protecting group in the presence of various activators was generally
One-Flask Synthesis of Dinucleoside Tetra- and Pentaphosphates
作者:Qianwei Han、Barbara L. Gaffney、Roger A. Jones
DOI:10.1021/ol060491d
日期:2006.5.1
We report a one-flask route for the synthesis of dinucleoside tetra- and pentaphosphates, in isolated yields of 50-85%. This route relies on a mixture of P(Ill) and P(V) chemistries, using phosphitylation of a protected nucleoside with 2-chloro-4H-1,3,2-benzo-dioxaphosphorin-4-one (salicylchlorophosphite), followed by sequential reaction with inorganic pyrophosphate and a nucleoside 5' mono- or diphosphate.
Selective deacetylation using iodine–methanol reagent in fully acetylated nucleosides
Selective deprotection of primary acetyl ester in nucleosides and carbohydrates using 1% iodine-methanol solution (w/v) was described and the mechanism was also discussed. (c) 2005 Elsevier Ltd. All rights reserved.