Three new hydrazide and five new hydrazonoyl derivatives were synthesized. The chemical structures of these compounds were confirmed by 1H-NMR, IR spectroscopy and elemental analysis. The prepared compounds were tested for their activity to inhibit photosynthetic electron transport in spinach chloroplasts and growth of the green algae Chlorella vulgaris. IC50 values of these compounds varied in wide range, from a strong to no inhibitory effect. EPR spectroscopy showed that the active compounds interfered with intermediates Z•/D•, which are localized on the donor side of photosystem II. Fluorescence spectroscopy suggested that the mechanism of inhibitory action of the prepared compounds possibly involves interactions with aromatic amino acids present in photosynthetic proteins.
合成了三种新的酰肼和五种新的酰肼衍生物。 通过 1H-NMR、红外光谱和元素分析确认了这些化合物的化学结构。测试了所制备化合物抑制菠菜叶绿体光合电子传递和绿藻小球藻生长的活性。这些化合物的 IC50 值变化很大,有的具有很强的抑制作用,有的则没有。EPR 光谱显示,这些活性化合物干扰了光系统 II 供体侧的中间体 Z-/D-。荧光光谱表明,制备的化合物的抑制作用机制可能涉及与光合作用蛋白质中的芳香族氨基酸的相互作用。