Conformational Restriction of Nucleosides by Spirocyclic Annulation at C4‘ Including Synthesis of the Complementary Dideoxy and Didehydrodideoxy Analogues
作者:Leo A. Paquette、Christopher K. Seekamp、Alexandra L. Kahane
DOI:10.1021/jo0301954
日期:2003.10.1
The concept of spirocyclic restriction, when generically applied to nucleoside mimics, allows for the preparation of diastereomeric pairs carrying either a syn- or anti-oriented hydroxyl at C-5'. Reported herein are convenient synthetic routes to enantiomerically pure 1-oxaspiro[4.4]nonanes featuring fully dihydroxylated end products as well as congeners having dideoxy and didehydrodideoxy substitution