Abstract
In recent years, the diamondback moth (DBM), Plutella xylostella has become one of the most important pests for cruciferous plants in the world. A new type of the thiophosphoryl pyrazole insecticide, called KH502. Its outstanding insecticidal activity could be effective alternative against DBM. We investigated, using the comparative molecular field analysis (CoMPA) method, The structure-activity relationship of various thiophosphorylpyrazole derivatives and structure requirement for insecticidal activity. We found, the key substructures in pyrazole derivatives, the trifluoro-methyl group and the thiophosphoryl group. Both play an important role in insecticidal activity with the binding site. The three dimensional Quantitative Structure Activity Relationship (QSAR) analysis could provide useful information for the structural requirements of pyrazole insecticide as an insecticidal and the design of a new insecticide.
십자화과 식물을 가해하는 세계적으로 중요한 해충의 하나인 배추좀나방(diamondback moth, Plutella xylostella)을 방제를 하기위하여 개발된 새로운 형태의 thiophosphoryl pyrazole계 살충제 KH502 유도체들의 구조와 살충활성을 CoMFA 방법으로 조사한 결과 효소의 결합부위에서 가장 중요한 역할을 하는 작용기는 trifluoro-methyl group과 thiophosphoryl group으로 밝혀졌다. 이와 같은 3D-QSAR 분석결과는 새로운 배추좀나방 방제용 살충제를 설계하는데 유용한 정보로 이용할 수 있을 것이다.
