3-Nitro-2-substituted aminopyrroles are histamine H.sub.2 -receptor antagonists. The 2-position substituent is a fully-unsaturated heterocyclyl alkyl group preferably with alkyl group interrupted by sulfur or oxygen. The 4- and 5-positions of the pyrrole ring can also be substituted.
3-硝基-2-取代
氨基
吡咯是
组胺H.sub.2-受体拮抗剂。2-位取代基是完全不饱和的杂环烷基烷基,最好是被
硫或氧中断的烷基。
吡咯环的4位和5位也可以被取代。