Novel isoxazoline amide benzoxaboroles were designed and synthesized to optimize the ectoparasiticide activity of this chemistry series against ticks and fleas. The study identified an orally bioavailable molecule, (S)-N-((1-hydroxy-3,3-dimethyl-1,3-dihydrobenzo[c][1,2]oxaborol-6-yl)methyl)-2-methyl-4-(5-(3,4,5-trichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)benzamide (23), with a favorable
设计并合成了新型
异恶唑啉
酰胺苯并恶唑,以优化该
化学系列对tick和跳蚤的杀外寄生虫活性。该研究确定了一种口服
生物可利用的分子,(S)-N -((1-羟基-3,3-二
甲基-1,3-二
氢苯并[c] [1,2]
氧杂
硼-6-基)
甲基)-
2-甲基-4-(5-(3,4,5-
三氯苯基)-5-(三
氟甲基)-4,5-二
氢异恶唑-3-基)
苯甲
酰胺(23),在犬中具有良好的药效学特征(C max = 7.42 ng / mL;T max = 26.0 h;终末半衰期t 1/2 = 127 h)。化合物23,一种发展中的候选药物,在治疗后24小时内显示出100%的治疗效果,单次口服后第30天对美国的狗虱(Dermacentor variabilis)的残留功效为97%,对猫蚤(Ctenocephalides felis)的残留功效为98%剂量为25 mg / kg。