2,2-Dimethyl cyclopentanones by acid catalyzed ring expansion of isopropenylcyclobutanols. A short synthesis of (±)-α-cuparenone and (±)-herbertene
作者:Angela M. Bernard、Angelo Frongia、Francesco Secci、Pier P. Piras
DOI:10.1039/b505707h
日期:——
catalyzed ring expansion of isopropenylcyclobutanols; the method allows ready access to the family of sesquiterpenes cuparanes and herbertanes, as demonstrated by the synthesis of (+/-)-alpha-cuparenone and the direct precursor of (+/-)-herbertene.
A Ring Closing Metathesis-Based Approach to (±)-Herbertene, (±)-α-Herbertenol, (±)-β-Herbertenol and (±)-Herbertenediol
作者:A. Srikrishna、M. Srinivasa Rao
DOI:10.1055/s-2002-19750
日期:——
An efficient methodology for the synthesis of the aromatic sesquiterpenes (+/-)-herbertene, (+/-)-alpha-herbertenol, (+/-)-beta-herbertenol (+/-)-herbertenediol and (+/-)-alpha-cuparenone, employing a combination of Claisen rearrangement and ring closing metathesis reactions, is described.