This invention provides 2,4-diamino-5-benzylpyrimidines represented by the formula ##STR1## wherein R.sub.1 is H or loweralkyl; R.sub.2 is H, loweralkyl or R.sub.3 CO-- wherein R.sub.3 is H, alkyl, or cycloalkyl-loweralkyl; and X is a halogen; and the acid addition salts thereof. These pyrimidine compounds are useful as antibacterial agents, and as potentiators of the antibacterial activity of sulfonamides.
本发明提供了由式##STR1##所表示的2,4-二
氨基-5-苄基
嘧啶,其中R.sub.1是H或低碳基;R.sub.2是H,低碳基或R.sub.3 CO-,其中R.sub.3是H,烷基或环烷基-低碳基;X是卤素;以及它们的酸加成盐。这些
嘧啶化合物可用作抗菌剂,并作为磺
胺类抗菌活性的增强剂。