A new stereoselective route to the carbocyclic nucleoside cyclobut-A
作者:Jagannath Panda、Sarita Ghosh、Subrata Ghosh
DOI:10.1039/b106542b
日期:2001.11.15
A new synthesis of cyclobut-A, a carbocyclic nucleoside analogue of oxetanocin is described. The key step involves a stereoselective intramolecular [2+2] photocycloaddition to provide a trisubstituted cyclobutane derivative with the desired stereochemistry. The nucleoside linkage was established through nucleophilic displacement of an acetate group by adenine.
Intramolecular [2+2] photocycloaddition for the direct stereoselective synthesis of cyclobutane fused γ-lactols
作者:Jagannath Panda、Subrata Ghosh
DOI:10.1016/s0040-4039(99)01379-9
日期:1999.9
A direct stereoselective route for the synthesis of γ-lactols fused to cyclobutanes via intramolecular [2+2] photocycloaddition of 1,6-dienes is described.