An Efficient, General Asymmetric Synthesis of Carbocyclic Nucleosides: Application of an Asymmetric Aldol/Ring-Closing Metathesis Strategy
作者:Michael T. Crimmins、Bryan W. King、William J. Zuercher、Allison L. Choy
DOI:10.1021/jo005535p
日期:2000.12.1
A general and efficient synthesis of carbocyclic and hexenopyranosyl nucleosides has been developed. The strategy combines three key transformations: an asymmetric aldol addition to establish the relative and absolute configuration of the pseudosugar, a ring-closing metathesis to construct the pseudosugar ring, and a Trost-type palladium(0)-mediated substitution to assemble the pseudosugar and the
This invention relates to a new process for preparing certain optically active purine substituted cyclopentene derivatives including the antiviral agent, carbovir, and novel intermediates used in this process. In particular, this invention concerns a synthesis of (1R-cis)-4-hydroxymethyl-2-cyclopenten-1-ol, an intermediate in this process.
Synthesis of purine substituted cyclopentene derivatives
申请人:Glaxo Inc.
公开号:US05126452A1
公开(公告)日:1992-06-30
This invention relates to new process for preparing certain optically active purine substituted cyclopentene derivatives and novel intermediates used in this process. In particular, the invention concerns the synthesis of the 1R-cis isomer of carbovir, (1R-cis)-amino-1,9-dihydro-9-[4-(hydroxymethyl)-2-cyclopenten-1-yl]-6H-pur in-6-one, an antiviral agent, and certain intermediates.