Abstract: Compounds of general formula ##STR1## in which R.sub.1, taken separately, denotes a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, andR.sub.2, taken separately, denotes a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group or a phenylthio or phenylsulphonyl group, or alternativelyR.sub.1 and R.sub.2 together form an ethano bridge or, together with the two carbon atoms 8 and 9, form a fused benzene ring,R.sub.3 denotes a hydrogen atom or a methyl group andR.sub.4 denotes a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group or a cation of a base which is acceptable in pharmacology, the group CH(R.sub.3)COOR.sub.4 being at position 2 or 3. have uses in treatment of inflammation, pain and undesirable platelet aggregation.

Abstract: Imidazolidine derivatives of the formula: ##STR1## wherein R.sub.1 represents the hydroxy radical and R.sub.2 represents a grouping --NHSO.sub.2 CH.sub.3, --NHCOR' or --NHCONR'R", R' and R" independently of one another representing a hydrogen atom or an alkyl radical having from 1 to 4 carbon atoms, or alternatively R.sub.2 represents the hydroxy radical and R.sub.1 represents a grouping --NHSO.sub.2 CH.sub.3, --NHCOR' or ?NHCONR'R", R' and R" independently of one another representing a hydrogen atom or an alkyl radical having from 1 to 4 carbon atoms, and pharmacologically-acceptable acid addition salts thereof, are new therapeutically useful compounds. They are more particularly useful in the treatment of gastric hypersecretion or hyperacidity or glaucoma.

Abstract: A method of treating a patient susceptible to thrombosis is provided which comprises treating the said patient with a compound of the formula ##STR1## wherein R' is H or CH.sub.3R is a ##STR2## radical in which Z is 0, S, SO, SO.sub.2 or NR.sub.1, R.sub.1 being H, C.sub.6 H.sub.5, CH.sub.3, CONR.sub.2 R.sub.3, COOR.sub.2, COR.sub.2 or SO.sub.2 R.sub.2, where R.sub.2 and R.sub.3 are, independently, H, C.sub.1-4 alkyl, C.sub.6 H.sub.5 or CF.sub.3.

Abstract: Compounds corresponding to the formula ##STR1## in which R' is a hydrogen atom or a methyl radical and R represents a radical ##STR2## in which Z is O, S, S.fwdarw.O, SO.sub.2 or NR.sub.1, in which R.sub.1 is a hydrogen atom or an alkyl, CONR.sub.2 R.sub.3, COOR.sub.2, COR.sub.2 or SO.sub.2 R.sub.2 radical, R.sub.2 and R.sub.3 each representing, independently of one another, a hydrogen atom, an alkyl radical having 1 to 4 carbon atoms, a phenyl radical or a CF.sub.3 radical, in the form of racemates or enantiomers if R' is CH.sub.3, and also, where appropriate, their addition salts with pharmaceutically acceptable acids.The compounds and salts are useful as anti-inflammatory agents, e.g. for treatment of arthritis. A process for preparing them and pharmaceutical compositions containing them are also claimed.