作者:Tobias Brückl、Florian Klepper、Katrin Gutsmiedl、Thomas Carell
DOI:10.1039/b713309j
日期:——
Modified nucleosides in tRNAs play an important role in the translational process. They fine tune the codon-anticodon interactions and they influence the folding and stabilisation of the tRNA structure. Herein, we present a novel synthetic route to the highly modified nucleosides PreQ(0) and archaeosine. The synthesis involves coupling of a protected 7-cyano-7-deazaguanosine nucleobase with a TBDMS
tRNA中修饰的核苷在翻译过程中起重要作用。他们微调密码子-反密码子的相互作用,并影响tRNA结构的折叠和稳定。在这里,我们提出了一种新的合成途径,以高度修饰的核苷PreQ(0)和archaeosine。合成涉及将保护的7-氰基-7-脱氮鸟嘌呤核苷碱基与TBDMS和异亚丙基保护的氯核糖单元偶联,脱保护后产生PreQ(0)核苷。然后将此PreQ(0)核苷用作合成古生物碱的起始材料,从而提供对该超修饰RNA核苷的首次总合成途径。