Aminophenol derivatives represented by the following formula (1): ##STR1## wherein X is O or S; A is alkylene, R.sup.1 is phenyl, etc., R.sup.2 and R.sup.3 are H or alkyl; R.sup.4 is substituted carbamoylalkyl, etc.; R.sup.5 is substituted amino, etc.; their salts, and optical isomers of the derivatives and salts. Also disclosed are gastrin receptor antagonists, cholecystokinin receptor antagonists, and medicines for digestive diseases. The compounds have strong binding inhibition against gastrin receptor or CCK-A receptor and also they have higher selectivity to either group of CCK-A receptor or gastrin receptor, and therefore, the compounds are useful for preventing and treating gastrointestinal diseases including peptic ulcers as well as central nervous system diseases.
以下是
化学式(1)所代表的
氨基
酚衍
生物:
##STR1##
其中,X为O或S;A为烷基;R.sup.1为苯基等;R.sup.2和R.sup.3为氢或烷基;R.sup.4为取代的
氨基甲酰烷基等;R.sup.5为取代的
氨基等。还披露了胃泌素受体拮抗剂、胆囊收缩素受体拮抗剂和用于消化系统疾病的药物。这些化合物对胃泌素受体或CCK-A受体具有强大的结合抑制作用,且它们对于CCK-A受体或胃泌素受体中的任意一组具有更高的选择性,因此,这些化合物对于预防和治疗包括消化性溃疡在内的消化系统疾病以及中枢神经系统疾病非常有用。