A short route to avenaciolide & isoavenaciolide via radical cyclization
摘要:
The bicyclic ether/lactone 5 was prepared from 7 in 6 steps including radical cyclization and a Pummerer rearrangement. After 5 was converted to 12 and 13 under KecK's conditions, divergent formal total syntheses of avenaciolide and isoavenaciolide were accomplished in four additional steps.