Total Synthesis of (±)-2-Debromohymenin via Gold-Catalyzed Intramolecular Alkyne Hydroarylation
作者:Ravi P. Singh、Manojkumar R. Bhandari、Fatima M. Torres、Thomas Doundoulakis、Delphine Gout、Carl J. Lovely
DOI:10.1021/acs.orglett.0c00883
日期:2020.5.1
An intramolecular, gold-catalyzed alkyne hydroarylation results in the formation of the core pyrroloazepinone framework of the hymenin group of oroidin alkaloids. Elaboration of the cyclic adduct via C2-azidation, bromination of the pyrrole, and deprotection set the stage for global reduction with Mo(CO)6 resulting in the formation 2-debromohymenin.
分子内,金催化的炔烃加氢芳基化导致形成了类固醇激素生物碱的处女膜基团的核心吡咯并ze庚酮骨架。通过C2-叠氮化,吡咯的溴化和脱保护形成环状加合物,为通过Mo(CO)6整体还原而形成2-脱溴膜精的形成奠定了基础。