Palladium-catalyzed Chemoselective Reaction of Allylic Carbonate with Nucleoside Bases and Its Application for the Synthesis of Carbocyclic Nucleosides. (−)- and (+)-Carbovirs
Palladium(0)-catalyzed reaction of 2-cyclopenten-1-yl methyl carbonate derivatives with nucleoside bases gave carbocyclic nucleosides chemo- and regioselectively under the neutral reaction conditions. The reaction was effectively used for the synthesis of (−)- and (+)-carbovir and its analogues.
[2+3]-cycloadditions of enantiomerically pure oxazoline-N-oxides1:A short stereoselective synthesis of (+)-carbovir
作者:Thierry Berranger、Yves Langlois
DOI:10.1016/0040-4039(95)01060-u
日期:1995.7
A short stereoselective synthesis of the potent antiviral agent carbovir 1 has been achieved by using a new [2+3] asymmetric cycloaddition between oxazoline-N-oxide 3 and cyclopentadiene.