Synthesis and biological activity of N-substituted naphthalimide acetic acid derivatives
According to active group splicing method,three novel compounds with plant growth-regulating activity were synthesized,using 1,8-naphthalene dicarboxylic anhydride as the basic skeleton.The structures of the compounds were determined by 1H NMR and elemental analysis.The indoor biological activity tests showed that the compound 4a could increase the rooting and germination activity of mung beans,with the germination promotion rate of 254.55％,the bud length promotion rate of 136.36％,the root length promotion rate reached of 75.00％at the concentration of 1 mg/L.Under low temperature,compound 4a could significantly improve the germination rate of wheat seeds.At the temperature of 4℃,the concentration of 0.67 mg/L,the germination promotion rate of wheat seeds reached 240％.Target compound 4a exhibited excellent resistance to low temperature stress and plant growth-regulating activity.
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