Protecting-Group-Mediated Diastereoselective Synthesis of C4′-Methylated Uridine Analogs and Their Activity against the Human Respiratory Syncytial Virus
作者:Christoph Köllmann、Svenja M. Sake、Peter G. Jones、Thomas Pietschmann、Daniel B. Werz
DOI:10.1021/acs.joc.9b03425
日期:2020.3.20
Adjusting the protecting group strategy, from an alkyl ether to a bidentate ketal at the carbohydrate backbone of uridine, facilitates a switchable diastereoselective α- or β-C4'/C5'-spirocyclopropanation. Using these spirocyclopropanated nucleosides as key intermediates, we synthesized a variety of C4'-methylated d-ribose and l-lyxose-configured uridine derivatives by a base-mediated ring-opening of the spirocyclopropanol