9-(Dihalobenzyl)adenines are prepared uncontaminated with other positional isomers in a series of mild transformations starting from 4,5,6-triaminopyrimidine and proceeding via 7-(N-formyl-N-dihalobenzyl)-amino[1,2,5]thiadiazolo[3,4-d]pyrimidine. The resulting compounds have anticoccidial activity and are useful in controlling cecal and/or intestinal coccidiosis when administered in minor quantities to animals, in particular to poultry usually in admixture with animal sustenance.
9-(二卤苯基)
腺嘌呤是通过一系列温和的转化反应从4,5,6-三
氨基嘧啶开始制备的,并且没有与其他位置异构体混合。这些化合物具有抗球虫活性,并在动物体内以少量给药的形式,特别是与动物食物混合后,对控制盲肠和/或肠球虫病非常有用。制备过程经过7-(N-甲酰-N-二卤苯基)-
氨基[1,2,5]
噻二唑并环[3,4-d]
嘧啶。