Imidazolinone derivatives as histamine H2-antagonists.

摘要

Compounds of the formula (I):
<CHEM>
and their salts are histamine H2-antagonists, wherein: R1 and R2 are hydrogen or various substituted alkyl groups; n is 1 to 6; Z is 2,5-furanyl, 2,5-thienyl, 2,4-pyridyl (wherein R1R2N(CH2)n is at position 4) or 1,3 or 1,4-phenylene; m is zero or one; Y is oxygen, sulphur or methylene; p is 2 to 4; R4 and R5 are hydrogen, optionally substituted alkyl or phenyl, and R3 is hydrogen or optionally substituted alkyl.
<??>Pharmaceutical compositions containing them are described as are processes for their preparation and intermediates therefor.