Abstract: Compounds of formula (I) (and pharmaceutically acceptable salts thereof) are histamine H3 receptor ligands.

Abstract: Pharmaceutical compositions comprising a proton pump inhibitor and a compound of the formula (I) or its pharmaceutically acceptable salts, are useful in treating gastrointestinal disorders.

Abstract: Compounds of formula (I) and their pharmaceutically acceptable salts are ligands at gastrin and/or cholecystokinin receptors. X and Y are independently ═N—, —N(R5)—═CH—, —S— or —O—.

Abstract: Compounds of formula (I) or (II) wherein R.sup.1 is C.sub.4 to C.sub.20 hydrocarbyl (in which one or more hydrogen atoms may be replaced by halogen, and up to three carbon atoms may be replaced by oxygen, nitrogen or sulphur atoms, provided that R.sup.1 does not contain an --O--O-- group), R.sup.2 is H or C.sub.1 to C.sub.3 alkyl, m is from 1 to 15, n is from 2 to 6, each X group is independently (a), or one X group is --N(R.sup.4)--, --O-- or --S-- and the remaining X groups are independently (a), wherein R.sup.3 is H, C.sub.1 to C.sub.6 alkyl, --CO.sub.2 R.sup.5, --CONR.sup.5.sub.2, --CR.sup.5.sub.2 OR.sup.6 or --OR.sup.5 (in which R.sup.5 and R.sup.6 are H or C.sub.1 to C.sub.3 alkyl), and R.sup.4 is H or C.sub.1 to C.sub.6 alkyl, each Y group is independently --C(R.sup.3)R.sup.4 --, or up to two Y groups are --N(R.sup.4)--, --O-- or --S-- and the remaining Y groups are independently --C(R.sup.3)R.sup.4 --, wherein R.sup.3 is as defined above, one R.sup.

Abstract: Described herein are compounds of formula (I) or a pharmaceutically acceptable salt thereof, ##STR1## wherein L is N or C, one of X and Y is --NH--CH.sub.2 --R.sup.2 and the other is the substituent of formula (II). The compounds are potent gastrin and/or CCK antagonists.