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Imazethapyr 유도체의 제초활성에 미치는 3 - ( N - methyl - N - ( X ) - 치환 - phenylaminooxoacetyl ) group 의 영향
성낙도(N . D . Sung),김현재(H . J . Kim),장해성(H . S . Chang),김대황(D . W . Kim) 한국응용생명화학회 1993 Applied Biological Chemistry (Appl Biol Chem) Vol.36 No.5
New twenty five Imazethapyr derivatives, [2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-3-(N-methyl-N-X(sub.)-phenylaminooxoacetyl)-5-methylpyridine] were synthesized. and The quantitative structure activity relationships (QSARs) between their post-emergence herbicidal activity(pI_(50)) values in vivo against Barnyard grass (Echinochloa crus-galli) and physicochemical parameters of substituents(X) of 3-(N-methyl-N-X(sub.)-phenylaminooxoacetyl) group have been studied. From the basis on the findings, in case of post-emergence, the activities were dependent on the steric constant(E_s$lt;0) and electron donating (σ$lt;0) effect by subsitituents(X) of 3-(N-methyl-N-X(sub.)phenylaminooxoacetyl) group. Therefore, The most effective compound, 15 (4-t-butyl group) and 20 (3,5-dimethyl group) were examined in this study. And the conditions on the compounds predicted to show higher herbicidal activity were also discussed.
Imazapyr 유도체의 제초활성에 미치는 3 - ( N - methyl - N ( X ) - 치환 - Phenylaminooxoacetyl ) Group 의 영향
성낙도(N . D . Sung),유택승(T . S . Ryu),장해성(H . S . Chang),김대황(D . W . Kim) 한국응용생명화학회 1994 Applied Biological Chemistry (Appl Biol Chem) Vol.37 No.6
New seventeen imazapyr derivatives, 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-3-(N-methyl-N-X(sub.)-phenylaminooxoacetyl)pyridine, 6 were synthesized and their pre-emergence herbicidal activity(pI_(50) in vivo against Corn (Zea mays L.) and Pigweed (Amaranthus viridis L.) were studied by the pot test under paddly conditions. (quantitative structure activity relationships (QSARs) were analyzed using the physicochemical parameters of substituent(X) on the phenyl ring of 3-(N-methyl-N-X(sub.)-phenylaminooxoacetyl) group and regression analysis. The herbicidal activities were related to the steric effect of X-substituent. The effect was rationalized by paraholic function of MR and L₁, where the optimal values were MR=5.56 (Zea mays L.) and L₁=3.34 Å (Amaranthus viridis L.). Among them, 2,5-difluoro substituted compound, 6i showed good herbicidal activity against Pigweed with excellent tolerance to Corn.
특별강연(特別講演) 및 학술연구(學術硏究) 발표요지(發表要旨) : 제1분야: 잡초방제 ; 피리미딘기를 포함하는 새로운 PPO 저해제의 합성과 제초활성
김준영 ( J. Y. Kim ),고영관 ( Y. K. Ko ),류재욱 ( J. W. Ryu ),정근희 ( K. H. Chung ),우재춘 ( J. C. Woo ),구동완 ( D. W. Koo ),김태준 ( T. J. Kim ),최정섭 ( J. S. Choi ),권오연 ( O. Y. Kwon ),김대황 ( D. W. Kim ) 한국잡초학회 2005 한국잡초학회 별책(학술대회 초록집) Vol.25 No.1
심포지엄 및 학술연구(學術硏究) 발표요지(發表要旨) : 제1분야: 잡초방제 ; 신규 합성된 N-phenylphtalimide 화합물의 제초활성 및토양 중 잔효지속성
최정섭 ( J. S. Choi ),김태준 ( T. J. Kim ),이병희 ( B. H. Lee ),송재은 ( J. E. Song ),고영관 ( Y. K. Ko ),장해성 ( H. S. Chang ),류재욱 ( J. W. Ryu ),김대황 ( D. W. Kim ),권오연 ( O. Y. Kwon ),조광연 ( K. Y. Cho ) 한국잡초학회 2004 한국잡초학회 별책(학술대회 초록집) Vol.24 No.2
Imazethapyr 유도체의 제초활성에 미치는 3-(N-methyl-N-(X)-치환-phenylaminooxoacetyl) group의 영향
성낙도,김현재,장해성,김대황 충남대학교 생물공학연구소 1993 생물공학연구지 Vol.3 No.-
새로운 25종의 Imazethapyr 유도체, (2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-3-(N-methyl-N-(X)치환 -phenylaminooxoacetyl)-5-methylpyridine)들을 합성하여 치환기(X) 변화에 따른 발아 전 후, 피(Echinochla crus-galli.)의 제초활성에 미치는 3-(N-methyl-N-(X)치환 -phenylaminoozoacetyl) group의 영향을 검토한 바, 발아 전보다 발아 후의 제초활성에 더 큰 영향을 미침을 알 수 있었다. 발아 후의 제초활성은 X-치환기의 전자밀게 효과와 입체상수(E_s)에 의존적이었으며 가장 큰 제초활성을 나타내는 화합물로는 bulky(E_s<O)하고 전자밀게 (б<O)가 치환된 화합물, 15(4-t-butyl group)와 20(3,5-dimethyl group)이었다. 그리고 높은 제초활성을 나타낼 것으로 예상되는 화합물의 조건들이 검토되었다. (1993년 9월 18일 접수, 1993년 9월 22일 수리). New twenty five Imazethapyr derivatives, [2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-3-(N-methyl-N-X(sub.)-phenylaminooxoacetyl)-5-methylpyridine] were synthesized. and The quantitative structure activity relationships (QSARs) between their post-emergence herbicidal activity(pI_50) values in vivo against Barnyard grass (Echinochloa crus-galli) and physicochemical parameters of substituents(X) of 3-(N-methyl-N-X(sub.)-phenylaminoo-xoacetyl) group have been studied. From the basis on the findings, in case of post-emergence, the activities were dependent on the steric constant(E_s<θ)and electron donating (o<O) effect by subsitituents(X) of 3-(N-methyl-N-X(sub.)phenylaminooxacetyl) group. Therefore, The most effective compound, 15 (4-t-butyl group) and 20 (3,5-dimethyl group) were examined in this study. And the conditions on the compounds predicted to show higher herbicidal activity were also discussed.