3-(3′-arylpropenyl)-2-azetidinones 8a–8k and 3-(3′-arylpropynyl)-2-azetidinones 16m–16p were prepared by the palladium-catalyzed arylation 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
通过
钯催化3-(3'-
丙烯基)芳基化反应,制备了一系列3-(3'-芳
丙烯基)-
2-氮杂环丁酮8a - 8k和3-(3'-芳基
丙炔基)-
2-氮杂环丁酮16m - 16p。)-
2-氮杂环丁酮7,或通过
4-戊烯酸的芳基化,或通过4-
戊酸乙酯,然后进行
2-氮杂环丁酮环的构建。通过催化加氢将不饱和2-氮杂
环丁烷酮转化为饱和的类似物9a – 9p。氮杂
环丁烷8a - 8k,9a - 9p和16m - 16p 对它们作为仓鼠中
胆固醇吸收
抑制剂的
生物活性进行了评估。