Abstract: Dextrorotatory isomer of 6-(5-chloro-2-pyridyl)-5-[(4-methyl-1-piperazinyl)carbonyloxy]-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazine, its preparation and pharmaceutical compositions containing it which are usable as tranquillisers and hypnotics.

Abstract: Dextrorotatory isomer of 6-(5-chloro-2-pyridyl)-5-[(4-methyl-1-piperazinyl)carbonyloxy]-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazine, its preparation and pharmaceutical compositions containing it which are usable as tranquillisers and hypnotics.

Abstract: Dextrorotatory isomer of 6-(5-chloro-2-pyridyl)-5-[(4-methyl-1-piperazinyl)carbonyloxy]-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazine, its preparation and pharmaceutical compositions containing it which are usable as tranquillisers and hypnotics.

Abstract: Dextrorotatory isomer of 6-(5-chloro-2-pyridyl)-5-[(4-methyl-1-piperazinyl)carbonyloxy]-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazine, its preparation and pharmaceutical compositions containing it which are usable as tranquillisers and hypnotics.

Abstract: Dextrorotatory isomer of 6-(5-chloro-2-pyridyl)-5-[(4-methyl-l-piperazinyl)carbonyloxy]-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazine, its preparation and pharmaceutical compositions containing it which are usable as tranquillisers and hypnotics.

Abstract: Dextrorotatory isomer of 6-(5-chloro-2-pyridyl)-5-[(4-methyl-1-piperazinyl)carbonyloxy]-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazine, its preparation and pharmaceutical compositions containing it which are usable as tranquillisers and hypnotics.

Abstract: Dextrorotatory isomer of 6-(5-chloro-2-pyridyl)-5-[(4-methyl-1-piperazinyl)carbonyloxy]-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazine, its preparation and pharmaceutical compositions containing it which are usable as tranquillizers and hypnotics.

Abstract: Dextrorotatory isomer of 6-(5-chloro-2-pyridyl)-5[(4-methyl-1-piperazinyl)carbonyloxy]-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazine, its preparation and pharmaceutical compositions containing it which are usable as tranquillizers and hypnotics.

Abstract: The present invention relates to a novel 2-aminonaphthyridine compounds that are useful in preparing a 2-isoindolinyl napthyridine compound that exhibits remarkable anxiolytic, hypnotic, anticonvulsant, antiepileptic and muscle-relaxant properties. The invention is also directed to the optical isomers of the 2-amino napthyridine compounds and salts thereof, their preparation and the use of the 2-amino napthyridine compounds for preparing the 2-isoindolinyl napthyridine compound.

Abstract: Compounds of formula: ##STR1## in which R.sub.1 represents a hydrogen atom, an alkyl or alkoxycarbonyl radical or a phenyl radical, optionally substituted,R.sub.2 represents an alkoxy, optionally substituted cycloalkyloxy, cycloalkylalkyloxy, phenylalkyloxy, polyfluoroalkyloxy or cinnamyloxy radical or a radical --NR.sub.5 R.sub.6,R.sub.3 represents a phenylamino radical in which the phenyl ring is optionally substituted, an optionally substituted phenyl radical or a naphthyl, indolyl or quinolyl radical,R.sub.4 represents a substituted phenyl radical,R.sub.5 and R.sub.6, which may be identical or different, represent a hydrogen atom or an alkyl, optionally substituted phenyl, indanyl, cycloalkylalkyl, cycloalkyl or phenylalkyl radical, or alternatively R.sub.5 and R.sub.6, together with the nitrogen atom to which they are attached, form a heterocycle, their preparation and medicinal products containing them.

Abstract: Compounds of formula: ##STR1## in which R.sub.1 represents a hydrogen atom or an alkyl, alkoxycarbonyl or an unsubstituted or substituted phenyl radical,R.sub.2 represents a hydrogen atom or an unsubstituted or substituted alkyl radical,R.sub.3 represents an alkyl, phenylalkyl, indanyl, cycloalkylalkyl or an unsubstituted or substituted phenyl radical, orR.sub.2 and R.sub.3 form a heterocycle together with the nitrogen atom to which they are attached, andR.sub.4 represents an unsubstituted or substituted phenyl radical, a naphthyl, indolyl or quinolyl radical or a phenylamino radical in which the phenyl ring is unsubstituted or substituted, their preparation and medicaments containing them.

Abstract: This invention relates to compounds of formula: ##STR1## in which R.sub.1 represents a hydrogen atom or an alkyl or alkoxycarbonyl radical or an unsubstituted or substituted phenyl radical,R.sub.2 represents an alkyl (1-8 C) or polyfluoroalkyl radical or an unsubstituted or substituted cycloalkyl radical,R.sub.3 represents an unsubstituted or substituted phenyl radical, a naphthyl, indolyl, quinolyl or phenylamino radical in which the phenyl ring is optionally substituted, or a quinolylamino radical, andm is 0 or 1, the process for preparing them and the medicaments containing them.

Abstract: Compounds of formula: ##STR1## in which R.sub.1 represents an alkyl radical, R.sub.2 represents a phenyl radical or a chain --(CH.sub.2).sub.m --R.sub.4 in which m is equal to 0, 1 or 2 and R, represents a hydroxyl, alkoxy or amino radical, R.sub.3 represents a hydrogen atom or an alkyl, alkoxy or alkylthio radical and n is equal to 0 or 1, their preparation and medicinal products containing them.

Abstract: Compounds of formula: ##STR1## in which R.sub.1 is (a) a phenyl radical or a substituted phenyl radical, (b) a chain --CH(R.sub.8)--COOR.sub.4, (c) a chain --CH.sub.2 --CO--NR.sub.5 R.sub.6 or (d) a phenylalkyl radical, R.sub.2 is a methylene or ethylene radical or a radical --CH(R.sub.7)--, R.sub.3 is a 1- or 2-naphthyl radical, 2- or 3-indolyl or phenylamino radical in which the phenyl ring is optionally substituted on the understanding that, when R.sub.3 is 1- or 2-naphthyl or 2- or 3-indolyl radical, R.sub.7 cannot represent a benzyl, alkylthioalkyl or phenyl radical, as well as, when R.sub.2 is a radical --CH(R.sub.7)--, their racemates and their stereoisomers, and medicinal products containing them.

Abstract: This invention relates to pyrrole derivatives of formula: ##STR1## in which A forms with the pyrrole ring an isoindoline, 6,7-dihydro-5H-pyrrolo[3,4-b]pyrazine, 2,3,6,7-tetrahydro-5H-[1,4]oxathiino[2,3-c]pyrrole or 2,3,6,7-tetrahydro-5H-[1,4]dithiino[2,3-c]pyrrole ring-system and Hetis naphthyridinyl, pyridyl or quinolyl which is unsubstituted or substituted with halogen, (1 to 4 C) alkyl, (1 to 4 C) alkyloxy, (1 to 4 C) alkylthio or CF.sub.3 and R=(3 to 10 C) straight- or branched-chain alkenyl or alkyl which is unsubstituted or substituted with alkyloxy, alkylthio, (3 to 6 C) cycloalkyl, NH.sub.

Abstract: Substituted alkadienes of formula: ##STR1## in which R.sub.1 is hydroxy or acetoxy, R.sub.2 is hydrogen, carboxy, alkoxycarbonyl, phenyl or benzoyl, andR.sub.3 is alkylthio or alkoxy and R.sub.4 is naphthoyl or optionally substituted benzoyl,or R.sub.3 is alkoxycarbonyl, cycloalkyloxycarbonyl or cyano and R.sub.4 is alkyl, naphthyl, optionally substituted phenyl, alkylthio, naphthylmethanethio, optionally substituted benzylthio, optionally substituted phenylthio, naphthylthio, phenethylthio or allylthio,or R.sub.3 and R.sub.4 form, with the carbon atom to which they are attached, a ring-system of formula: ##STR2## in which R.sub.5 is hydrogen or alkoxy and X is methylene or S inhibit 5-lipoxygenase and are useful, for example, as anti-inflammatories.

Abstract: Pyrrole derivatives of formula (I): ##STR1## in which A forms with the pyrrole ring an isoindoline, 6,7-dihydro-5H-pyrrolo[3,4-b]pyrazine, 2,3,6,7-tetrahydro-5H-[1,4]oxathiino[2,3-c]pyrrole or 2,3,6,7-tetrahydro-5H-[1,4]dithiino[2,3-c]pyrrole ring-system, Het.dbd.naphthyridinyl, pyridyl or quinolyl which are unsubstituted or substituted with halogen, (1 to 4 C) alkyl, (1 to 4 C) alkyloxy, (1 to 4 C) alkylthio or CF.sub.3, Y.dbd.CO, C.dbd.NOH or CHOH and R.dbd.(3 to 10 C) alkenyl, alkyl which is unsubstituted or substituted with OH, alkyloxy, alkylthio, (3 to 6 C) cycloalkyl, NH.sub.2, alkylamino, dialkylamino, alkylcarbonylamino, piperazinyl, piperidyl, 1-azetidinyl, morpholino, pyrrolidinyl, carbamoyl, alkylcarbamoyl, dialkylcarbamoyl, (1-piperazinyl)carbonyl, piperidinocarbonyl, pyrrolidinocarbonyl, phenyl, pyridyl, 1-imidazolyl or alternatively R.dbd.

Abstract: Procedure and apparatus for the continuous analysis of the chloride ion content of overhead waters downstream of a hydrocarbon distillation column for more effectively preventing hydrochloric acid corrosion of downstream equipment while avoiding over-neutralizing the overhead waters to the detriment of the hydrocarbon product. This procedure comprises the following operations, in the order given or in a different order:Drawing from the overhead waters a stream of water for analysis;removing from the sample so drawn the hydrocarbons as well as the suspended matter;blowing nitrogen into the sample to sweep away the hydrogen sulfide ans the residual hydrocarbons;oxidizing the S.sup.2- or HS.sup.- sulfide ions to sulfate ions;acidifying the sample;finally, measuring by ionometry, and more particularly by means of a combined electrode, the content of chloride ions present.

Abstract: Pyrrole derivatives of formula ##STR1## in which A forms with the pyrrole ring an isoindoline, 6,7-dihydro-5H-pyrrolo-[3,4-b]pyrazine, 2,3,6,7-tetrahydro-5H-[1,4]-oxathiino-[2,3-c]pyrrole or 2,3,6,7-tetrahydro-5H-[1,4]dithiino-[2,3-c]pyrrole ring-system, Y+0, S or NH, Het=naphthyridinyl or quinolyl which are unsubstituted or substituted with halogen, (1 to 4 C) alkyl, (1 to 4 C) alkyloxy, (1 to 4 C) alkylthio, CN or CF.sub.3 and R=(3 to 10 C) alkenyl or alkyl which is unsubstituted or substituted with alkyloxy, alkylthio, cycloalkyl, alkylcarbonyl, cycloalkylcarbonyl or cycloalkylcarbamoyl in which the cycloalkyl portions contain 3 to 6 C, NH.sub.

Abstract: Substituted alkadienes of the formula: ##STR1## in which R.sub.1 is hydroxy or acetoxy, R.sub.2 is hydrogen, carboxy, alkoxycarbonyl, phenyl or benzoyl, andR.sub.3 is alkylthio or alkoxy and R.sub.4 is naphthoyl or optionally substituted benzoyl,or R.sub.3 is alkoxycarbonyl, cycloalkyloxycarbonyl or cyano and R.sub.4 is alkyl, naphthyl, optionally substituted phenyl, alkylthio, naphthylmethanethio, optionally substituted benzylthio, optionally substituted phenylthio, naphthylthio, phenethylthio or allylthio,or R.sub.3 and R.sub.4 form, with the carbon atom to which they are attached, a ring-system of formula: ##STR2## in which R.sub.5 is hydrogen or alkoxy and X is methylene or S inhibit 5-lipoxygenase and are useful, for example, as anti-inflammatories.