Chinese Journal of Organic Chemistry ›› 2021, Vol. 41 ›› Issue (2): 708-718.DOI: 10.6023/cjoc202008006 Previous Articles     Next Articles

Article

含喹唑啉硫醚的杨梅素衍生物的设计、合成及生物活性研究

贺军1, 唐雪梅1, 周清1, 彭峰1, 刘婷婷1, 柳立伟1, 贺鸣1, 谢承卫1, 薛伟1,*()   

  1. 1 贵州大学精细化工研究开发中心 绿色农药与农业生物工程国家重点实验室培育基地 教育部绿色农药与生物工程重点实验室 贵阳 550025
  • 收稿日期:2020-08-07 修回日期:2020-09-04 发布日期:2020-10-12
  • 通讯作者: 薛伟
  • 作者简介:
    * Corresponding author. E-mail:
  • 基金资助:
    国家自然科学基金(21867003); 贵州省自然科学基金(20192452); 贵州省自然科学基金(20191105); 贵州省自然科学基金(20171028)

Design, Synthesis and Biological Activities of Myricetin Derivatives Containing Quinazoline Thioether Moiety

Jun He1, Xuemei Tang1, Qing Zhou1, Feng Peng1, Tingting Liu1, Liwei Liu1, Ming He1, Chengwei Xie1, Wei Xue1,*()   

  1. 1 Laboratory of Green Pesticide and Bioengineering of Ministry of Education, State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025
  • Received:2020-08-07 Revised:2020-09-04 Published:2020-10-12
  • Contact: Wei Xue
  • Supported by:
    the National Natural Science Foundation of China(21867003); the Natural Science Foundation of Guizhou Province(20192452); the Natural Science Foundation of Guizhou Province(20191105); the Natural Science Foundation of Guizhou Province(20171028)

A series of myricetin derivatives containing quinazoline thioether moiety were designed and synthesized using myricetrin as the starting material through active splicing strategy. All target compounds were characterized by 1H NMR, 13C NMR, 19F NMR and HRMS. Their biological activities were evaluated. The results of biological activities showed that these compounds exhibited certain inhibitory activities against X. oryzae, X. citri and R. solanacearum. Among them, 3-(3-((6-bro- moquinazolin-4-yl)thio)propoxy)-5,7-dimethoxy-2-(3,4,5-trimethoxyphenyl)-4H-chromen-4-one (A15) displayed appreciable inhibitory effect against X. oryzae with a half maximal effective concentration (EC50) values of 13.9 μg/mL, which was better than those of the control drugs of bismerthiazol (88.9 μg/mL) and thiodiazole-copper (68.1 μg/mL). The EC50 values of 3-(4- ((6-chloroquinazolin-4-yl)thio)butoxy)-5,7-dimethoxy-2-(3,4,5-trimethoxyphenyl)-4H-chromen-4-one (A3), 3-(3-((6-chloro- quinazolin-4-yl)thio)propoxy)-5,7-dimethoxy-2-(3,4,5-trimethoxyphenyl)-4H-chromen-4-one (A14), 3-(3-((6-chloroquinazolin- 4-yl)thio)propoxy)-5,7-dimethoxy-2-(3,4,5-trimethoxyphenyl)-4H-chromen-4-one (A15) and 3-(3-((6-fluoroquinazolin-4-yl)- thio)propoxy)-5,7-dimethoxy-2-(3,4,5-trimethoxyphenyl)-4H-chromen-4-one (A16) against Ralstonia solanacearum were 1.1, 14.0, 11.9 and 7.5 μg/mL, respectively, which were superior to the control drugs of bismerthiazol (38.5 μg/mL) and thio-diazole-copper (184.8 μg/mL). The results of in vivo experiments showed that compound A15 has good curative and protective activities against X. oryzae. The possible antibacterial mechanisms of target compound A3 against R. solanacearum and A15 against X. oryzae were preliminarily discussed base on scanning electron microscope analyses.

Key words: myricetin derivative, quinazoline thioether, biological activity, in vivo experiment, scanning electron microscope