Design, Prins-cyclization reaction promoting diastereoselective synthesis of 10 new tetrahydropyran derivatives and in vivo antinociceptive evaluations
作者:Saulo L. Capim、Paulo H.P. Carneiro、Paloma C. Castro、Maithê R.M. Barros、Bruno G. Marinho、Mário L.A.A. Vasconcellos
DOI:10.1016/j.ejmech.2012.09.046
日期:2012.12
Prins-cyclization reaction as synthetic key-step to tetrahydropyran rings construction of 10 new congeners compounds (3–12) designed from Naproxen structure. These tetrahydropyran derivatives were in vivo bioevaluated on antinociceptive effect in the acetic acid-induced abdominal writhing test, the tail-flick test, the rota-rod performance and open field tests. All new compounds showed greater antinociceptive
我们在本文中描述了Prins环化反应非常有效的2,6-顺式或2,4,6-顺式非对映选择性合成(2或3步,全球收率62-65%),是四氢吡喃环构建的关键步骤的10份新的同源物的化合物(3 - 12)从萘普生结构设计。这些四氢吡喃衍生物在乙酸诱导的腹部扭体试验,甩尾试验,旋转杆性能和开阔地域试验中具有体内抗伤害感受的生物活性。与化合物1a相比,所有新化合物均显示出更大的抗伤害感受活性,以前由我们描述的止痛四氢吡喃衍生物。我们可以分离出高活性的四氢吡喃衍生物10,它在乙酸诱导的腹部扭体试验中表现出87.5%的抑制作用(1a表现出14%的抑制作用)。除此之外,甩尾测试表明化合物7和10的活性最高。在所有生物学研究的模型中,所有这些新化合物对小鼠均未显示毒性。