Discovery of 1-(4-Fluorophenyl)-(3R)-[3-(4-fluorophenyl)-(3S)- hydroxypropyl]-(4S)-(4-hydroxyphenyl)-2-azetidinone (SCH 58235): A Designed, Potent, Orally Active Inhibitor of Cholesterol Absorption
Discovery of 1-(4-Fluorophenyl)-(3R)-[3-(4-fluorophenyl)-(3S)- hydroxypropyl]-(4S)-(4-hydroxyphenyl)-2-azetidinone (SCH 58235): A Designed, Potent, Orally Active Inhibitor of Cholesterol Absorption
Selective α,δ-hydrocarboxylation of conjugated dienes utilizing CO<sub>2</sub> and electrosynthesis
作者:Ahmed M. Sheta、Mohammad A. Mashaly、Samy B. Said、Saad S. Elmorsy、Andrei V. Malkov、Benjamin R. Buckley
DOI:10.1039/d0sc03148h
日期:——
processes afford the α,δ-dicarboxylated product, the selective mono-carboxylation of dienes is a significant challenge and the major product reported under transition metal catalysis arises from carboxylation at the α-carbon. Herein we report a new electrosynthetic approach, that does not rely on a sacrificial electrode, the reported method allows unprecedented direct access to carboxylic acids derived from
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