The invention discloses generic compound (2) and its analog (6) and pharmaceutically acceptable salts and methods of using these compounds for therapeutically and prophylactically treating a patient for an illness consisting of the group of Pneumocystis carinii and Toxoplasmosis gondii ##STR1## In compound (2), X and Y may be the same or different and are selected from the group consisting of OH and NH.sub.2 ; Z is one of either nitrogen or carbon and Q is one of either nitrogen or carbon, but when Z equals nitrogen, Q does not equal nitrogen, and when Q equals nitrogen, Z does not equal nitrogen; A is selected from the group consisting of nitrogen, carbon and sulfur and B equals carbon when A is selected from the group consisting of sulfur, carbon and nitrogen, B equals nitrogen when A equals carbon and B equals sulfur when A equals carbon; .sub.3 is one of either hydrogen or methyl except where Z is nitrogen wherein R.sub.3 is zero; R.sub.4 is one of either a hydrogen or a first lower alkyl group except when A equals sulfur wherein R.sub.4 is zero; R.sub.1 is selected from the group consisting of hydrogen, nitroso group, aldehyde, a second lower alkyl group except when B is equal to sulfur wherein R.sub.1 is zero; and R.sub.2 is selected from the group consisting alkyl, dialkyl and trialkyl groups, alkylaryl, diaryl and triaryl groups, substituted aryl, diaryl and triaryl groups, an alkoxy, substituted alkoxy and halogen.
本发明揭示了通用化合物(2)及其类似物(6)和药学上可接受的盐,以及使用这些化合物治疗和预防患有肺孢子虫和弓形虫病的患者的方法。在化合物(2)中,X和Y可以相同也可以不同,并且从OH和NH.sub.2组成的组中选择;Z是氮或碳之一,Q是氮或碳之一,但当Z等于氮时,Q不等于氮,当Q等于氮时,Z不等于氮;A从氮、碳和
硫组成的组中选择,当A从
硫、碳和氮组成的组中选择时,B等于碳,当A等于碳时,B等于氮,当A等于碳时,B等于
硫;.sub.3是氢或甲基之一,除非Z是氮,其中R.sub.3为零;R.sub.4是氢或第一低烷基之一,除非A等于
硫,其中R.sub.4为零;R.sub.1从氢、亚硝基、醛、第二低烷基组成的组中选择,除非B等于
硫,其中R.sub.1为零;R.sub.2从烷基、二烷基和三烷基基团、烷基芳基、二芳基和三芳基基团、取代芳基、二芳基和三芳基基团、烷氧基、取代烷氧基和卤素中选择。