• Title/Summary/Keyword: 2-benzylimino-1,3-thiazolines

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Construction of a Focused Library of 2-benzylimino-1,3-thiazolines and Their Fungicidal Activities (2-벤질이미노-1,3-티아졸린 유도체의 집중 라이브러리의 구축 및 이들의 살균활성)

  • Park, Ik-Kyu;Lim, Chul-Soo;Nam, Kee-Dal;Shin, Dong-Yoon;Choi, Kyung-Ja;Cho, Kwang-Yun;Hahn, Hoh-Gyu
    • The Korean Journal of Pesticide Science
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    • v.10 no.2
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    • pp.149-152
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    • 2006
  • Construction of focused library of 2-benzylimino-1,3-thiazolines 7 through molecular modification of 3-alkyl-2-phenylimino-1,3-thiazolines 1 which showed selective fungicidal activity against rice blast and their fungitoxic activity against 6 kinds of typical plant diseases was described. Fifty four compounds of focused library of 2-benzylimino-1,3-thiazolines 7 were synthesized from the reaction of the corresponding $\gamma$-chloroacetoacetanilides 6 with N-benzyl thioureas 5 by parallel synthetic methodology. As results of fungicidal screening against the typical plant diseases, twenty eight kinds of 7 at 100 ${\mu}g$ $mL^{-1}$ showed the control value over 50% against tomato late blight.

Excavation of 3-amino-2-benzylimino-1,3-thiazolines, Selective Fungicide against Phytophthora infestans and Magnaporthe grisea (토마토 역병균과 벼 도열병균에 선택적인 살균활성의 3-아미노-2-벤질이미노-1,3-티아졸린 유도체 발굴)

  • Hahn, Hoh-Gyu;Nam, Kee-Dal;Shin, Dong-Yoon;Choi, Gyung-Ja;Cho, Kwang-Yun
    • The Korean Journal of Pesticide Science
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    • v.10 no.3
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    • pp.165-171
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    • 2006
  • A new 3-amino-1,3-thiazoline chemical library was synthesized through parallel synthetic technology and in vivo antifungal activity of the compounds were investigated against the typical 6 plant diseases (100 ppm). The characteristic feature of these derivatives was that both a benzyl moiety in C-2 imino and an amino group in C-3 of 2-imino-1,3-thiazoline scaffold were substituted in the molecule respectively. Some compounds showed antifungal activity with selectivity against tomato late blight and rice blast. The fungitoxicity would be attributed to 3,4-dichlorophenyl moiety of the benzyl group.