College of Pharmacy, University of Nebraska Medical Center, 986025 Nebraska Medical Center, Omaha, NE, USA.
Bioorg Med Chem Lett. 2011 Sep 15;21(18):5320-3. doi: 10.1016/j.bmcl.2011.07.024. Epub 2011 Jul 19.
Dispiro 1,2,4-trioxanes and 1,2,4,5-tetraoxanes had superior efficacy against Fasciola hepatica than the corresponding ozonides (1,2,4-trioxolanes). For highest efficacy, spiroadamantane and carboxymethyl substructures were required. Three compounds completely cured F. hepatica-infected mice at single oral doses of 50mg/kg and two were partially curative at single doses of 25mg/kg.
二氧五环和四氧五环对肝片吸虫的疗效优于相应的臭氧化物(1,2,4-三氧杂环戊烷)。为了达到最高的疗效,需要螺环金刚烷和羧甲基取代基。三种化合物在 50mg/kg 的单次口服剂量下完全治愈了感染肝片吸虫的小鼠,两种化合物在 25mg/kg 的单次剂量下部分治愈。