The development of novel natural product-derived nano-pesticide systems with loading capacity and sustained releasing performance of bioactive compounds is considered an effective and promising plant protection strategy. In this work, 25
L-carvone-based thiazolinone–hydrazone compounds
4a~
4y were synthesized by the multi-step
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The development of novel natural product-derived nano-pesticide systems with loading capacity and sustained releasing performance of bioactive compounds is considered an effective and promising plant protection strategy. In this work, 25
L-carvone-based thiazolinone–hydrazone compounds
4a~
4y were synthesized by the multi-step modification of
L-carvone and structurally confirmed. Compound
4h was found to show favorable and broad-spectrum antifungal activity through the in vitro antifungal activity evaluation of compounds
4a~
4y against eight phytopathogenic fungi. Thus, it could serve as a leading compound for new antifungal agents in agriculture. Moreover, the
L-carvone-based nanochitosan carrier
7 bearing the 1,3,4-thiadiazole-amide group was rationally designed for the loading and sustained releasing applications of compound
4h, synthesized, and characterized. It was proven that carrier
7 had good thermal stability below 200 °C, dispersed well in the aqueous phase to form numerous nanoparticles with a size of~20 nm, and exhibited an unconsolidated and multi-aperture micro-structure. Finally,
L-carvone-based thiazolinone–hydrazone/nanochitosan complexes were fabricated and investigated for their sustained releasing behaviors. Among them, complex
7/4h-2 with a well-distributed, compact, and columnar micro-structure displayed the highest encapsulation efficiency and desirable sustained releasing property for compound
4h and thus showed great potential as an antifungal nano-pesticide for further studies.
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