Delalande S.a.

Etablissements Nativelle, S.a.

Synthelabo

Norwich Eaton Pharmaceuticals, Inc.

Establissements Nativelle S.a.

Jean-Jacques Koenig

Francois X Jarreau

Francois-Xavier Jarreau

Vincenzo Rovei

Alain R Schoffs

Luc L Lebreton

Maryse F Masson

Samir Jegham

Philippe Burnier

Frederic Puech

1,3,4-Oxadiazol-2(3H)-one derivatives, of formula ##STR1## in which R.sub.1 represents either a hydrogen atom or a linear or branched (C.sub.1-4)alkyl group which is substituted with a hydroxyl group, a phenoxy group, a (C.sub.1-4)alkoxy group, a (C.sub.1-4)alkylthio group, a mercapto group, a (C.sub.1-4)alkoxy-(C.sub.1-4)alkoxy group, a di(C.sub.1-4)alkylamino group or an N-(C.sub.1-4)alkyl-N-propynylamino group, or represents a (C.sub.3-4)alkynyl group, and

1,3,4-oxadiazol-2(3H)-one derivatives, their preparation and their

Derivatives having the formula: ##STR1## in which R.sub.1 =C.sub.1 -C.sub.4 alkyl and Ar is an aryl or heteroaryl group chosen from among the following: ##STR2## where R.sub.2 represents a hydrogen atom one or two halogen atoms, a CN, NO.sub.2 or CF.sub.3 group, one, two or three C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy groups or an amino group substituted by two C.sub.1 -C.sub.4 alkyl groups, in which case the --W--V-- chain represents --N.dbd.N-- or ##STR3## and n=2-6; (ii) pyridyl, in which case the --W--V-- chain represents --N.dbd.N-- and n= 1-6, and acid addition salts of those derivatives (I) which are salt-forming. These derivatives are of use in therapy as agents for inhibiting type B monoamine oxydase.

Derivatives of 4-(hetero)arylmethyloxy phenyl diazole, a method of

Derivatives having the formula: ##STR1## where R.sub.1 denotes C.sub.1 -C.sub.4 alkyl; X denotes oxygen or methylene; R.sub.2 denotes C.sub.1 -C.sub.4 alkyl or CF.sub.3 ; R.sub.3 denotes a CH.sub.2 R.sub.4 group in which R.sub.4 is (i) a pentagonal or hexagonal aromatic heterocyclic group comprising one or two nitrogen atoms and optionally fused with a benzene ring or (ii) a group having the formula ##STR2## where n=0 or 1, and R.sub.5 and R.sub.6 independently denote C.sub.1 -C.sub.4 alkyl or benzyl, and R.sub.5 and R.sub.6 also, together with the nitrogen atom to which they are bonded, form a piperidino or pyrrolidino or morpholino or N-methyl piperazino radical, and their N-oxide forms and acid addition salts of these derivatives and their N-oxide forms, the derivatives being in various stereoisomeric forms or in the form of a mixture of these forms, including the racemic form.

3-aryl oxazolidinone compounds and therapeutic use thereof

Derivatives having the formula: ##STR1## in which R.sub.1 =C.sub.1 -C.sub.4 alkyl and Ar is an aryl or heteroaryl group chosen from among the following:

The derivatives of the formula: ##STR1## wherein: R.sub.1 is H or C.sub.1 -C.sub.4 alkyl;

Process of preparing by condensation certain

3-aryloxazolidinone derivatives, process for their preparation and their

3-Aryloxazolidinone derivatives, process for their preparation and their

The invention relates to androstane-17-carboxylic acid esters, represented by general formula (I): ##STR1## wherein R.sub.1 represents a lower alkyl group containing 1 to 4 carbon atoms, a lower alkyl group containing 2 to 4 carbon atoms substituted by an amino group, or an aralkyl group from 6 to 12 carbon atoms, R.sub.2 and R.sub.3, which may be the same or different, represent a hydrogen atom or a lower alkyl group containing 1 to 4 carbon atoms, R.sub.4 represents a hydrogen atom, a hydroxy group or an acetoxy group, R.sub.5 represents a hydroxy or acetoxy group, or R.sub.4 and R.sub.5 represent together a divalent alkylenedioxy group, R.sub.6 represents a hydroxy group, a methoxy group, or an acetoxy group, R.sub.7 represents a methyl group or a hydroxymethyl group, R.sub.8 represents an hydrogen atom or a hydroxy group and ##STR2## represents either a ##STR3## group or a ##STR4## carbon atom having the double linkage in the 4- or 5-position of the steroid nucleus. Such esters are prepared by coupling reaction of the corresponding 14-azido-derivatives with a sugar, followed by a reduction. Application in therapy, especially in the treatment of heart failure.

Novel 14-amino steroids

Quinidine derivatives of general formula (I): ##STR1## wherein R.sub.1 represents a hydrogen atom, an alkyl group, or an acyl group, and R.sub.2 represents a hydrogen atom, a hydroxy group, an alkoxy group, an acyloxy group or an aroyloxy group, as well as the acid addition salts thereof, useful in therapy, particularly, for the treatment of cardiac arrhythmia.

Antiarrhythmic quinidine derivatives

The present invention relates to new 14-aminosteroids and their application in therapy and also to a process for their preparation.

14-aminosteroid derivatives, application in therapy and process of

The invention relates to 4-acylamino-1-azaadamantanes represented by general formula (I): ##STR1## wherein R represents an alkyl group, a substituted alkyl group, an aryl group or a substituted aryl group, useful in particular, for the treatment of cardiovascular diseases.

4-acylamino-1-azaadamantanes, and compositions for use thereof in

The invention relates to 14-amino steroid derivatives of formula (I): ##STR1## wherein R represents a hydrogen atom or a lower alkyl group with 1 to 4 carbon atoms, R.sub.1 represents a substituted or unsubstituted sugar residue, and R.sub.2 represents a hydrogen atom, a hydroxyl group or an --OR.sub.3 group, wherein R.sub.3 is a substituted or unsubstituted sugar residue; and acid salts thereof useful in the treatment of cardiac incapacity.

14-Amino steroid derivatives, a process for the preparation thereof and

The invention relates to new 3-pyridyl-5-alkoxy-pyrazole derivatives of the following formula: ##STR1## wherein R.sub.1 represents a 4-pyridyl, 3-pyridyl or 2-pyridyl group which is unsubstituted or which may be substituted with one or two lower alkyl groups; R.sub.2 represents a hydrogen atom or a lower alkyl group; and R.sub.3 represents a lower alkyl group, a phenyl group or an aralkyl group; and the acid addition salts thereof. The derivatives may be prepared by alkylation of a 3-pyridyl-5-pyrazolone. The derivatives are medicinally useful, particularly for the treatment of cardiac deficiency.

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Maisons Laffitte, France

Jean-Jacques Koenig