Abstract In the present work, 117 N-phenylbenzamides (NPDs) were prepared and evaluated against recombinant AOX from the fungal pathogen Moniliophthora perniciosa. 1H, 13C NMR, FTIR, and mass spectra provided structural information on NPDs. The library compounds were tested as Alternative Oxidase inhibitors in two different assays using the model yeast Pichia pastoris: cell growth and oxygen consumption assays. The most active compound, 3FH, was further characterized by DRX and 1H-NMR-STD. Single crystal X-ray diffraction showed intra- and intermolecular interactions of 3FH in solid-state and elucidated its 3D structural configuration. 1H-NMR-STD allowed us to derive protein-ligand interactions in a membrane-mimetic system and evidenced an outstanding interaction of 3FH with this enzyme. Results of both biological assays were used as input to Quantitative Structure-Activity Relationship models, which highlighted the more important molecular fragments contributions for protein-ligand interaction.

中文翻译：

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作为替代氧化酶抑制剂的 N-苯基苯甲酰胺衍生物：合成、分子特性、1H-STD NMR 和 QSAR

摘要 在目前的工作中，制备了 117 种 N-苯基苯甲酰胺 (NPD)，并针对来自真菌病原体 Moniliophthora perniciosa 的重组 AOX 进行了评估。1H、13C NMR、FTIR 和质谱提供了 NPD 的结构信息。使用模型酵母毕赤酵母在两种不同的测定中测试文库化合物作为替代氧化酶抑制剂：细胞生长和耗氧量测定。活性最强的化合物 3FH 通过 DRX 和 1H-NMR-STD 进一步表征。单晶 X 射线衍射显示固态 3FH 的分子内和分子间相互作用，并阐明了其 3D 结构构型。1H-NMR-STD 使我们能够在膜模拟系统中推导出蛋白质-配体相互作用，并证明了 3FH 与这种酶的显着相互作用。