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Tomato chlorosis virus (ToCV) has caused great harm to the production of tomato worldwide. To develop efficient anti-ToCV agents, some novel 4(3H)-quinazolinone derivatives containing dithioacetal were designed and synthesized, and their anti-ToCV activities were evaluated by microscale thermophoresis (MST) using ToCV coat protein (ToCV-CP) as a new target. The results showed that some compounds had a strong binding capacity to ToCV-CP. In particular, compounds C5 and C22 have an excellent binding capacity to ToCV-CP, with binding constant values of 0.24 and 0.25 μM, respectively. Additionally, reduced ToCV-CP gene expression levels of 81.05 and 87.59% could be achieved when tomato was treated with compounds C5 and C22, respectively, which were obviously higher than the levels after ningnanmycin (NNM) treatment (43.88%) and lead compound Xiangcaoliusuobingmi (XCLSBM) treatment (63.56%). Therefore, this work indicates that 4(3H)-quinazolinone derivatives containing dithioacetal moiety can be used as novel anti-ToCV agents.

Citation

Guangcheng Zu, Xiuhai Gan, Dandan Xie, Huanyu Yang, Awei Zhang, Shaoyuan Li, Deyu Hu, Baoan Song. Design, Synthesis, and Anti-ToCV Activity of Novel 4(3H)-Quinazolinone Derivatives Bearing Dithioacetal Moiety. Journal of agricultural and food chemistry. 2020 May 20;68(20):5539-5544

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PMID: 32323987

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