Quantitative Structure-Activity Relationships of Fungicidal <i>N</i>-(3, 4-Diethoxyphenyl)carbamates

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  • TAKAHASHI Junya
    Pesticides Research Laboratory, Takarazuka Research Center, Sumitomo Chemical Co., Ltd.
  • KIRINO Osamu
    Pesticides Research Laboratory, Takarazuka Research Center, Sumitomo Chemical Co., Ltd.
  • TAKAYAMA Chiyozo
    Pesticides Research Laboratory, Takarazuka Research Center, Sumitomo Chemical Co., Ltd.
  • NAKAMURA Shigeko
    Pesticides Research Laboratory, Takarazuka Research Center, Sumitomo Chemical Co., Ltd.
  • NOGUCHI Hiroshi
    Pesticides Research Laboratory, Takarazuka Research Center, Sumitomo Chemical Co., Ltd.
  • KATO Toshiro
    Pesticides Research Laboratory, Takarazuka Research Center, Sumitomo Chemical Co., Ltd.
  • KAMOSHITA Katsuzo
    Pesticides Research Laboratory, Takarazuka Research Center, Sumitomo Chemical Co., Ltd.

Bibliographic Information

Other Title
  • 殺菌活性を有する<i>N</i>-(3,4-diethoxyphenyl)-carbamate 類の定量的構造活性相関
  • 殺菌活性を有するN-(3,4-diethoxyphenyl)carbamate類の定量的構造活性相関〔英文〕
  • サッキン カッセイ オ ユウスル N 3 4 diethoxyphenyl c
  • Fungicidal Activity of <i>N</i>-Phenylcarbamates (Part 6)

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For 30 N-(3, 4-diethoxyphenyl)carbamoyl esters with various alcoholic moiety substituents, their fungicidal activity against Botrytis cinerea resistant to benzimidazole fungicides was determined by the agar medium dilution method and the structure-activity relationships were analyzed by using the multiple regression technique. The hydrophobicity of the substituents was favorable to the activity. The activity was related parabolically to the maximum width of the substituents and the “β-branching” of the substituents was detrimental to the activity. The preventive activity of compounds against gray mold of cucumber caused by the resistant B. cinerea was determined by the foliar application in pot tests. The preventive activity was dependent on the magnitude of the fungicidal activity and the α-branching of the substituents on analysis by the adaptive least-squares method.

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