Synthesis of Enantiomerically Pure (<i>S</i>)-Methanocarbaribo Uracil Nucleoside Derivatives for Use as Antiviral Agents and P2Y Receptor Ligands
作者:Artem Melman、Minghong Zhong、Victor E. Marquez、Kenneth A. Jacobson
DOI:10.1021/jo801224j
日期:2008.10.17
We have developed an approach toward enantiomerically pure (S)-methanocarba ribonucleosides based on several functional group transformations on a sensitive bicyclo[3.1.0]-hexane system. D-Ribose was transformed into methanocarba alcohol 3 followed by conversion of the OH group to a nitrile with inversion of configuration at C4. The nitrile group was subsequently reduced in two stages to the 5'-hydroxymethyl group. An ester group appended to a tertiary carbon (Cl) was transformed to an amino group as a nucleobase precursor.