Enantioselective Total Synthesis of the Guaianolide (−)-Dehydrocostus Lactone by Enediyne Metathesis
作者:Felix Kaden、Peter Metz
DOI:10.1021/acs.orglett.1c00008
日期:2021.2.19
The hydroazulene core of the bioactive sesquiterpenoid (−)-dehydrocostus lactone was generated by domino enediyne metathesis. A triple hydroboration/oxidation of the resultant conjugated triene installed three out of four stereogenic centers of the target in a single step. The enantiopure acyclic metathesis substrate was readily available by an asymmetric anti aldol reaction. Masking of the γ-lactone