Optimization of isoxazoline amide benzoxaboroles for identification of a development candidate as an oral long acting animal ectoparasiticide
作者:Yong-Kang Zhang、Jacob J. Plattner、Eric E. Easom、Tsutomu Akama、Yasheen Zhou、W. Hunter White、Jean M. Defauw、Joseph R. Winkle、Terry W. Balko、Jianxin Cao、Zhixin Ge、Jianzhang Yang
DOI:10.1016/j.bmcl.2016.04.093
日期:2016.7
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。