Synthesis of imidacloprid derivatives with a chiral alkylated imidazolidine ring and evaluation of their insecticidal activity and affinity to the nicotinic acetylcholine receptor
作者:Hisashi Nishiwaki、Mituhiro Kuriyama、Hikaru Nagaoka、Akira Kato、Miki Akamatsu、Satoshi Yamauchi、Yoshihiro Shuto
DOI:10.1016/j.bmc.2012.09.007
日期:2012.11
imidazolidine ring were asymmetrically synthesized to evaluate their insecticidal activity against adult female housefly, Musca domestica, and affinity to the nicotinic acetylcholine receptor of the flies. The bulkier the alkyl group, the lower was the receptor affinity, but the derivatives methylated and ethylated at the R-5-position of the imidazolidine ring were equipotent to the unsubstituted compound. Quantitative
不对称合成了一系列具有烷基化咪唑烷环的吡虫啉(IMI)衍生物,以评估其对成年雌性家蝇Musca domestica的杀虫活性以及对果蝇的烟碱乙酰胆碱受体的亲和力。烷基越大,受体亲和力越低,但是在咪唑烷环的R -5-位甲基化和乙基化的衍生物与未取代的化合物等价。受体亲和力的定量结构-活性关系(QSAR)分析表明,将取代基引入咪唑烷环基本上是不利的,但在R处引入取代基如果尺寸较小,则允许-5-位置。合成衍生物与受体的结合模型支持QSAR分析,表明在配体结合位点R -5-位置周围的短烷基存在空间。此外,在杀虫活性和受体亲和力之间观察到正相关,这表明即使修饰了咪唑烷环,受体亲和力也是影响杀虫活性的主要因素。