Julia–Colonna asymmetric epoxidation of furyl styryl ketone as a route to intermediates to naturally-occurring styryl lactones
Abstract
The enone 1 was oxidized stereoselectively using urea-hydrogen peroxide with polyeucine as the catalyst to give the epoxide 2 which was used to make (+)-goniotriol 7, (+)-goniofufurone 8, (+)-8-acetylgonitriol 9 and gonio-pypyrone 10.