Synthesis and antifungal activities of 4-[5-(2-cyclopropylaminopyrimidin-4-yl)-4-arylthiazol-5-yl]piperidine derivatives on Phytophthora capsici

4-[5-(2-cyclopropylaminopyrimidin-4-yl)-4-arylthiazol-5-yl] piperidine 유도체들의 합성과 고추역병균에 대한 살균활성

  • 남석우 (순청향대학교 자연과학대학 생명공학과) ;
  • 이경락 (순청향대학교 자연과학대학 생명공학과) ;
  • 김태준 (동부기술원 농생명연구소) ;
  • 정봉진 (동부기술원 농생명연구소) ;
  • 최원식 (순청향대학교 자연과학대학 생명공학과)
  • Received : 2012.01.08
  • Accepted : 2012.03.14
  • Published : 2012.03.31


Fungicidal activities against phytopathogenic fungi of diarylthiazole compound of 4-[5-(2-cyclopropylaminopyrimidin-4-yl)-4-(4-fluorophenyl)thiazol-5-yl]-1-methylpiperidine (I) have been determined to be excellent and compound I was used as the leading compounds in this study. Furthermore, the compound was synthesized by reacting them with five functional groups, 4-fluoro-3-methylphenyl, 4-fluoro-3-chlorophenyl, 4-chloro-2-fluorophenyl, 4-bromo-3-methylphenyl and 2,4-dichlorophenyl groups instead of 4-fluorophenyl group. Also, 2-amino-, 2-(N-ethoxycarbonyl)piperidin-4-yl-, and 2-piperidin-4-yl-thiazole were introduced as the leads instead of 2-N-methylpiperidine-4-yl-thiazol of compound I. VIII-1~VIII-5 and XIII-1~XV-5 compounds were newly synthesized and their structures were confirmed by $^1H$-NMR-spectrum. The fungicidal activities of all the synthesized compounds against Phytophthora capsici were examined using the whole plant method. Among the VIII-1~VIII-5 and XIII-1~XV-5 chemicals, XIV-3 showed the most potent antifungal activity in vivo. While the $EC_{50}$ and $EC_{90}$ values of the commercial fungicide dimethomorph and I were $4.26{\pm}0.02$, $14.72{\pm}0.05$ and $1.01{\pm}0.11$, $6.31{\pm}0.09mM$, those of 4-[5-(2-cyclopropylaminopyrimidin-4-yl)-4-(4-chloro-2-fluorophenyl)thiazol-5-yl]-1-methylpiperidine (XIV-3) was $0.98{\pm}0.21$ and $5.85{\pm}0.05mM$. Therefore, XIV-3 can be considered as a viable candidate for the control of plant diseases caused by P. capsici, and further studies will be conducted on the mode of action XIV-3.


fungicidal activity;4-[5-(2-cyclopropylaminopyrimidin-4-yl)-4-(4-chloro-2-fluorophenyl)thiazol-5-yl]-1-methylpiperidine (XIV-3);Phytophthora capsici


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