Abstract: Pharmaceutical formulations are described, which comprise a hydantoin of formula (I): ##STR1## wherein R.sup.1 is C.sub.1-4 alkyl, R.sup.2 is hydrogen or C.sub.1-4 alkyl; or R.sup.1 and R.sup.2 taken together either represent a C.sub.4-6 alkylene group or a group of formula: ##STR2## where R.sup.5 and R.sup.6 independently represent hydrogen or C.sub.1-4 alkyl;R.sup.3 is C.sub.1-6 alkyl or benzyl;R.sup.4 is hydrogen or C.sub.1-6 alkyl;provided that R.sup.2 and R.sup.4 cannot both be hydrogen;or R.sup.1 and R.sup.4 taken together represent a C.sub.2-4 alkylene group;associated with a pharmaceutically-acceptable carrier therefor. The compounds, some of which are novel, are useful in the treatment of immediate hypersensitivity diseases such as asthma.

Abstract: Acylamino heteroaryl compounds in which the heteroaryl nucleus is a 5-membered ring containing a single heteroatom, which may be oxygen, or sulphur, methods of making the compounds and pharmaceutical formulations containing the compounds. The compounds have anti-allergy activity.

Abstract: Novel compounds are described of the formula ##STR1## where R is C.sub.2-6 alkyl, R.sup.1 and R.sup.2 are hydrogen or C.sub.1-4 alkyl and n is 3 to 6. The compounds are useful in the prophylactic treatment of immediate hypersensitivity diseases including asthma.

Abstract: Acylamino heteroaryl compounds in which the heteroaryl nucleus is a 5-membered ring containing a single heteroatom, which may be oxygen, or sulphur, methods of making the compounds and pharmaceutical formulations containing the compounds. The compounds have anti-allergy activity.

Abstract: Acylamino tetrazolyl compounds having anti-allergic activity, methods of making the compounds and pharmaceutical formulations containing the compounds.

Abstract: A class of novel 2-oxazolyl ureas and carbamates having anti-allergic activity are described together with methods of making such compounds and pharmaceutical compositions containing the active compounds of the invention.

Abstract: Acylamino heteroaryl compounds in which the heteroaryl nucleus is a 1,2,4-oxadiazole or 1,2,4-thiadiazole nucelus, methods of making the compounds and pharmaceutical formulations containing the compounds. The compounds have anti-allergy activity.

Abstract: Acylamino pyrazolyl compounds of the formula: ##STR1## wherein Ar represents an optionally substituted pyrazolyl group, the acylamino group --NR.sup.1 COR.sup.2 being attached to a carbon atom of the pyrazolyl ring, which have anti-allergic activity, methods of making the compounds and pharmaceutical formulations containing the compounds.

Abstract: Acylamino heteroaryl compounds in which the heteroaryl nucleus is a 1,2,4-oxadiazole or 1,2,4-thiadiazole nucleus, methods of making the compounds and pharmaceutical formulations containing the compounds. The compounds having anti-allergy activity.

Abstract: Acylamino heteroaryl compounds in which the heteroaryl nucleus is a 1,3,4-oxadiazole or 1,3,4-thiadiazole nucleus, methods of making the compounds and pharmaceutical formulations containing the compounds. The compounds have anti-allergy activity.

Abstract: Acylamino heteroaryl compounds in which the heteroaryl nucleus is a 1,3,4-oxadiazole or 1,3,4-thiadiazole nucleus, methods of making the compounds and pharmaceutical formulations containing the compounds. The compounds have anti-allergy activity.

Abstract: Acylamino pyrrole compounds having anti-allergic activity, methods of making the compounds and pharmaceutical formulations containing the compounds.