2017年12月
Quantitative structure-activity relationship of substituted imidazothiadiazoles for their binding against the ecdysone receptor of Sf-9 cells
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
- ,
- ,
- 巻
- 27
- 号
- 23
- 開始ページ
- 5305
- 終了ページ
- 5309
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.bmcl.2017.10.013
- 出版者・発行元
- PERGAMON-ELSEVIER SCIENCE LTD
Imidazothiadiazoles (ITDs) are a class of potent nonsteroidal ecdysone agonists with larvicidal activity. Previously, we performed the Hansch-Fujita type of quantitative structure-activity relationship (QSAR) analysis for ITD analogs (Yokoi et al., Pestic. Biochem. Physiol. 2015, 120, 40-50). The activity was reasonably explained by hydrophobicity and electronegativity of substituents on the imidazothiadiazole ring system. However, the limited data points (n = 8) hampered the examination of other physicochemical parameters. In the present study, we expanded the library of ITD congeners and evaluated their receptor-binding affinity using intact Sf-9 cells. The QSAR analysis for the expanded set revealed the significance of the third physicochemical parameter, the negative steric effect for long substituents. We also evaluated the larvicidal activity of the synthesized compounds against Spodoptera litura; however, it was not correlated to the binding affinity. The results obtained here suggests that the pharmacokinetic properties must be improved to enhance the larvicidal activity of ITDs. (C) 2017 Elsevier Ltd. All rights reserved.
- リンク情報
- ID情報
-
- DOI : 10.1016/j.bmcl.2017.10.013
- ISSN : 0960-894X
- eISSN : 1464-3405
- PubMed ID : 29074255
- Web of Science ID : WOS:000415643400040