Pyranosyl-RNA (‘p-RNA’ ) is an oligonucleotidesystem isomeric to natural RNA and composed of the very same building blocks as RNA. Its generational, chemical, and informational properties are deemed to be those of an alternative nucleic acid system that could have been a candidate in Nature's evolutionary choice of the molecular basis of genetic function. We consider the study of the chemistry of
Direct One-Pot Synthesis of Nucleosides from Unprotected or 5-<i>O</i>-Monoprotected <scp>d</scp>-Ribose
作者:A. Michael Downey、Celin Richter、Radek Pohl、Rainer Mahrwald、Michal Hocek
DOI:10.1021/acs.orglett.5b02332
日期:2015.9.18
implications in life and disease. Current synthetic methods involve multistep procedures employing protected sugars in the glycosylation of nucleobases. Using modified Mitsunobu conditions, we report on the firstdirectglycosylation of purine and pyrimidine nucleobases with unprotected d-ribose to provide β-pyranosyl nucleosides and a one-pot strategy to yield β-furanosides from the heterocycle and 5-O-monoprotected
新的,改进的获取核苷的方法不仅对有机化学家而且对整个科学界都普遍感兴趣,因为它们对生命和疾病具有关键意义。当前的合成方法涉及在核碱基的糖基化中采用受保护的糖的多步骤程序。使用改性的Mitsunobu条件下,我们对嘌呤的第一个直接的糖基化报告,并嘧啶核碱基与未受保护的d -核糖提供β-吡喃核苷和一锅策略以产生β-呋喃糖苷从杂环和5- ö -monoprotected d -核糖。
VERFAHREN ZUR HERSTELLUNG EINES PENTOPYRANOSYL-NUCLEOSIDS
申请人:Nanogen Recognomics GmbH
公开号:EP1019423B1
公开(公告)日:2003-02-26
Why Pentose- and Not Hexose-Nucleic Acids??. Part VII. Pyranosyl-RNA (?p-RNA?). Preliminary communication
Qualitative conformational analysis of the entirety of conceivable hexo- and pentopyranosyloligonucleotidesystems derived from the diastereoisomeric aldohexoses (CH2O)6 and aldopentoses (CH2O)5 predicts the existence of a variety of pairing systems which have not been experimentally investigated so far. In particular, the analysis foresees the existence of a ribopyranosyl isomer of RNA (‘p-RNA’)