Synthesis, in vitro and in vivo biological evaluation of dihydroartemisinin derivatives with potential anti-Toxoplasma gondii agents
作者:Hao Deng、Xing Huang、Chunmei Jin、Chun-Mei Jin、Zhe-Shan Quan
DOI:10.1016/j.bioorg.2019.103467
日期:2020.1
evaluation of the data generated in the T. gondii mouse infection model indicates that compound A2 treatment was a good inhibitor of T. gondii in vivo and that it was effective in relieving the liver damage induced by T. gondii. In addition, the results of a docking study revealed that A2 could become a better T. gondii calcium-dependent protein kinase1 (TgCDPK1) inhibitor. For this reason, compound A2 has
本研究设计、合成了四个系列的双氢青蒿素衍生物,并对其抗弓形虫活性进行了评价,并计算了选择性指数(SI)。SI 越高,该化合物对抗弓形虫的效果越好。我们的目标是过滤掉 SI 大于先导化合物的化合物。选择具有最高 SI 的化合物进行小鼠体内抗弓形虫病试验。在合成的化合物中,(3R,5aS,6R,8aS,9R,12R,12aR)-3,6,9-trimethyl-decahydro-12H-3,12-epoxy[1,2]di-oxepino[4, 3-i]isochromen-10-yl-(te-rt-butoxycarbonyl)-l-alaninate (A2) 表现出最有效的抗 T。弓形虫活性和低细胞毒性(SI:6.44),在体外产生比先导化合物 DHA(SI:1.00)和临床使用的阳性对照药物螺旋霉素(SI:0.72)更好的结果。此外,化合物A2在体内对弓形虫的生长抑制作用优于螺旋霉素,并显着减少了小鼠腹腔中速殖子的数量(P