Enhanced reactivity of twisted amides inside a molecular cage
作者:Hiroki Takezawa、Kosuke Shitozawa、Makoto Fujita
DOI:10.1038/s41557-020-0455-y
日期:2020.6
When an amide group is distorted from its planar conformation, the conjugationbetween the nitrogen lone pair and the π* orbital of the carbonyl is disrupted and the reactivity towards nucleophiles is enhanced. Although there are several reports on the synthesis of activated twisted amides, amide activation through mechanical twisting is much less common. Here, we report twisted amides that are stabilized
Within this manuscript the synthesis and potential antioxidative and antiproliferative activity of novel methoxy amidinosubstituted bezamides 6–17 and benzimidazoles 23–28 and 32–35 is presented. Their antioxidative potency has been evaluated by in vitro spectrophotometric assays and preliminary structure–activity relationships among the synthesized compounds are discussed. The compound 28 bearing