Synthesis of 3-Arylpropenyl, 3-Arylpropynyl and 3-Arylpropyl 2-Azetidinones as Cholesterol Absorption Inhibitors: Application of the Palladium-Catalyzed Arylation of Alkenes and Alkynes
作者:Stuart B. Rosenblum、Tram Huynh、Adriano Afonso、Harry R. Davis
DOI:10.1016/s0040-4020(00)00429-4
日期:2000.7
3-(3′-arylpropenyl)-2-azetidinones 8a–8k and 3-(3′-arylpropynyl)-2-azetidinones 16m–16p were prepared by the palladium-catalyzedarylation of 3-(3′-propenyl)-2-azetidinone 7, or by arylation of 4-pentenoic acid, or via ethyl 4-pentynoate followed by 2-azetidinone ring construction. The unsaturated 2-azetidinones were transformed to their saturated analogs 9a–9p by catalytic hydrogenation. Azetidinones