The invention relates to compounds of the general formula (I) ##STR1## and physiologically acceptable salts, hydrates and bioprecursors thereof, in which the variables are as defined in the specification. The compounds of formula (I) show pharmacological activity as selective histamine H.sub.2 -antagonists. Also disclosed are intermediates in the preparation of the compounds of the formula (I).
本发明涉及通式(I)的化合物及其生理上可接受的盐、
水合物和
生物前体,其中变量如规范中所定义。式(I)化合物显示出作为选择性
组胺H.sub.2 -
拮抗剂的药理活性。本发明还揭示了制备式(I)化合物的
中间体。