A series of 10 pyrimethamine analogues containing 3'- and 4'-trifluoromethyl and 3',4'-methylenedioxy groups has been prepared and tested for in vitro antimalarial activity against the FC-27 and K-1isolates of Plasmodium falciparum. Several of these compounds were almost as active as pyrimethamine against the drug-sensitive FC-27 isolate, and like pyrimethamine , they were much less active against the drug-resistant K-1 isolate. The 4'-trifluoromethyl compunds, however, showed much smaller differences.
一系列含有3'-和4'-三
氟甲基和3',4'-亚甲二氧基基团的10个
嘧啶胺类似物已经制备并针对Plasmodium falciparum的FC-27和K-1菌株进行了体外抗疟活性测试。其中几种化合物对于对药物敏感的FC-27菌株的活性几乎与
嘧啶胺相当,而像
嘧啶胺一样,它们对于对药物耐药的K-1菌株的活性要低得多。然而,4'-三
氟甲基化合物显示出较小的差异。