| 摘要 |
<p>Compounds of the formula (I): <CHEM> and their salts are histamine H2-antagonists, wherein: R<0> is 2-guanidinothiazol-4-yl or a group R<1>R<2>N(CH2)nZ- wherein R<1> and R<2> are hydrogen or various substituted alkyl groups or are joined together to form a ring; n ist 1 to 6; Z is 2,5-furanyl, 2,5-thienyl, 2,4-pyridyl (wherein R<1>R<2>N(CH2)n- is at position 4), 2,4-thiazolyl (wherein R<1>R<2>N(CH2)n is at position 2) or 1,3-or 1,4-phenylene; m is zero or one; Y is a bond, oxygen, sulphur or methylene; p is 2 to 4; q is zero or one; R<3> is hydrogen or C1-6 @alkyl@; and R<4> is hydrogen or C1-6alkanoyl. Pharmaceutical compositions containing them are described as are processes for their preparation and intermediates therefor.</p> |
