Structure−Activity Relationships of 2‘-Deoxy-2‘,2‘-difluoro-<scp>l</scp>-<i>erythro</i>-pentofuranosyl Nucleosides
作者:Lakshmi P. Kotra、Yuejun Xiang、M. Gary Newton、Raymond F. Schinazi、Yung-C. Cheng、Chung K. Chu
DOI:10.1021/jm970275y
日期:1997.10.1
-pentofuranosyl nucleosides as potential antiviral agents. The target compounds were synthesized via the key intermediates 7a or 7b from L-gulono gamma-lactone. Compound 2 was oxidatively cleaved and coupled with ethyl bromodifluoroacetate in the presence of activated zinc under Reformatsky conditions to obtain a diasteomeric mixture of 4(R) and 4(S), in a 4:1 ratio. The major 4(R) isomer was cyclized