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 first direct glycosylation 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。