Acid-Induced Rearrangement of Epoxygermacra-8,12-olides: Synthesis and Absolute Configuration of Guaiane and Eudesmane Derivatives from Artemisiifolin
作者:Sergio Rosselli、Antonella Maggio、Rosa Angela Raccuglia、Maurizio Bruno
DOI:10.1002/ejoc.201000171
日期:——
A study on the acid-induced rearrangement of 4,5-epoxy- and 1,10-epoxygermacra-8,12-olides was carried out. From a 4,5-epoxy derivative, guaianes were obtained, whereas 1,10-epoxy derivatives furnished, depending on the stereochemistry of the C-1/C-10 epoxy ring, trans-5β,10α- or trans-5α,10β-eudesmanolides.