Automated RNA-Synthesis with Photocleavable Sugar and Nucleobase Protecting Groups
作者:Alfred Stutz、Stefan Pitsch
DOI:10.1055/s-1999-3098
日期:——
A synthetic method for the N-alkyloxycarbonylation of adenine and guanine nucleosides was developed and used for the prepn. of RNA-phosphoramidites carrying photolabile sugar and nucleobase protectinggroups. From these building blocks, a heptameric oligoribonucleotide was prepd. by automated synthesis, followed by detachment form the solid support and photolytic deprotection under mild conditions
Synthesis, Thermal Stability, Biophysical Properties, and Molecular Modeling of Oligonucleotides of RNA Containing 2′-<i>O</i>-2-Thiophenylmethyl Groups
作者:Joseph C. Nguyen、Yannick Kokouvi Dzowo、Carly Wolfbrandt、Justin Townsend、Stanislav Kukatin、Haobin Wang、Marino J. E. Resendiz
DOI:10.1021/acs.joc.6b01615
日期:2016.10.7
displayed a ca. ΔΔG° of +4 kcal/mol with respect to its canonical analogue. Interestingly, hybridization of two modified strands (13:17, containing a total of eight modifications) resulted in increased stability and a distinct secondary structure, reflected in its CD spectrum. Molecular modeling based on DFT calculations shed light on the nature of this stability, with induced changes in the torsional angle
METHOD FOR DETACHING PROTECTING GROUP ON NUCLEIC ACID
申请人:Shiba Yoshinobu
公开号:US20090149645A1
公开(公告)日:2009-06-11
A method is provided for removing a 2-cyanoethoxymethyl (CEM) group and substituting the 2′-hydroxyl group of each ribose of an oligonucleic acid derivative with good reproducibility and high efficiency.
METHOD FOR REMOVAL OF NUCLEIC ACID-PROTECTING GROUP
申请人:Kitagawa Hidetoshi
公开号:US20090312534A1
公开(公告)日:2009-12-17
A method is provided for efficiently removing the silicon substituent which protects the 3′-hydroxyl group and the 5′-hydroxyl group of a ribose of a ribonucleic acid derivative in which the 2′-hydroxyl group of the ribose is protected with the following substituent (I)
where WG1 represents an electron withdrawing group, and the 3′-hydroxyl group and the 5′-hydroxyl group of the ribose are protected with a silyl protecting group.
Method for detaching protecting group on nucleic acid
申请人:Nippon Shinyaku Co., Ltd.
公开号:US08158775B2
公开(公告)日:2012-04-17
The present invention provides a method for removing a 2-cyanoethoxymethyl (CEM) group, which substitutes the 2′-hydroxyl group of each ribose of an oligonucleic acid derivative, with good reproducibility and high efficiency. The present invention further provides a method for producing an oligonucleic acid derivative represented by the following general formula (11), characterized by using a sulfoxide-based solvent or an amide-based solvent or a mixture thereof as a reaction solvent in the step of removing a protecting group, which protects the 2′-hydroxyl group of each ribose of an oligonucleic acid derivative represented by the following general formula (10) by allowing TBAF to act on the oligonucleic acid derivative.