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Synthesis of Some N, N′‐Diacylhydrazine Derivatives with Radical‐Scavenging and Antifungal Activity

A series of N,N′‐diacylhydrazines were prepared and their structures were confirmed by 1H NMR, MS and FTICR‐MS. They were tested radical‐scavenging activity in vitro. The preliminary bioassays of title compounds showed that two compounds had excellent radical‐scavenging activity comparable with vitamin C, while the activity is highly relative to the substituents. Surprisingly, several compounds also exhibit favorable fungicidal activities. To further explore the comprehensive structure–activity relationships about the fungicidal activity, a three‐dimensional quantitative structure–activity relationship analysis using the method of comparative molecular field analysis was performed.