Total synthesis of rubrolide M and some of its unnatural congeners
作者:Fabio Bellina、Chiara Anselmi、Renzo Rossi
DOI:10.1016/s0040-4039(02)00202-2
日期:2002.3
Two protocols have been developed for the Pd-catalyzed regioselective synthesis of 4-aryl-3-chloro-2(5H)-furanones starting from 3,4-dichloro-2(5H)-furanone. These monochloro derivatives have then been used as precursors to (Z)-4-aryl-5-[1-(aryl)methylidene]-3-chloro-2(5H)-furanones including naturally-occurring rubrolide M.
Mucochloric Acid: A Useful Synthon for the Selective Synthesis of 4-Aryl-3-chloro-2(5H)-furanones, (Z)-4-Aryl-5-[1-(aryl)methylidene]-3-chloro-2(5H)-furanones and 3,4-Diaryl-2(5H)-furanones
4-Dichloro-2(5H)-furanone, which has been prepared efficiently from mucochloricacid, has been transformed selectively into 4-aryl-3-chloro-2(5H)-furanones either by Suzuki- or Stille-type reactions. These monochloro derivatives have been used as precursors either to (Z)-4-aryl-5-[1-(aryl)methylidene]-3-chloro-2(5H)-furanones, including naturally occurring rubrolide M, or to unsymmetrical 3,4-diaryl-2(5H)-furanones