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Insecticidal activity and mode of action of 2,4-diaminopyrimidines

机译:2,4-二氨基嘧啶的杀虫活性和作用方式

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摘要

Three 2,4-diaminopyrimidines were rested against several insect species. They were active against lepidopteran pests with LC50 values <3 mg liter(-1) for most species tested. They were also active against two-spotted spider mite, Tetranychus urticae, (LC50 10-40mg liter(-1)). Folinate, but not hypoxanthine or thymidine was found to be an effective rescue agent, requiring a concentration of 100 mg liter(-1) diet to rescue half of the intoxicated larvae. The results confirm dihydrofolate reductase to be the site of action for these insecticides and are consistent with the mode of action of folinate rescue in mammals.
机译:三个3,2,4-二氨基嘧啶分别针对几种昆虫。它们对大多数种类的LC50值均小于3 mg升(-1)的鳞翅目害虫具有活性。它们还对二斑叶螨Tetranychus urticae(LC50 10-40mg升(-1))有活性。发现叶酸,但不是次黄嘌呤或胸腺嘧啶是有效的拯救剂,需要以100 mg升(-1)的饮食浓度来拯救一半的陶醉幼虫。结果证实二氢叶酸还原酶是这些杀虫剂的作用位点,并且与哺乳动物中叶酸的拯救作用方式一致。

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