Enantiospecific synthesis of antifungal dasyscyphin E from cupressic acid
作者:Antonio Fernández、Ettahir Boulifa、Fermín Jiménez、Soumicha Mahdjour、Ahmed I. Mansour、Rachid Chahboun、Enrique Alvarez-Manzaneda
DOI:10.1016/j.tet.2017.09.048
日期:2017.11
The first synthesis of the sesquiterpene quinol dasyscyphin E has been achieved starting from cupressic acid. Key steps of the synthetic sequence are the oxidative degradation of the diterpene side chain to give a methylketone, the diastereoselective α-methylation of a protected ketoaldehyde, the subsequent intramolecular aldol condensation and the further Diels-Aldercycloaddition of a dienol ester