The pyrimidine derivatives of formula I ##STR1## wherein R.sup.1 is naphthyl, substituted naphthyl or substituted phenyl; R.sup.2 is hydrogen or lower alkoxy; and A is an optionally present ethylene or 1,3-propylene, and wherein the diaminopyridine group has the exo-configuration when A is present, are described. These compounds are useful as antibacterial agents, antimalarial agents and antitumor agents, and can be used in combination with sulfonamides in the control of bacterial infections.
本发明揭示了式I的
嘧啶衍
生物,其中R.sup.1是
萘基,取代
萘基或取代苯基; R.sup.2是氢或低级烷氧基; A是可选的
乙烯或1,3-
丙二烯,并且当A存在时,二
氨基吡啶基团具有外向构型。这些化合物可用作抗菌剂,抗疟疾剂和抗肿瘤剂,并可与磺
胺类药物联合使用以控制细菌感染。