Abstract: New derivatives of 1,2-dihydro 2-oxo quinoxalines corresponding to the general formula I: ##STR1## in which: R is a hydrogen or halogen atomR.sub.1 is a hydrogen atom or a straight or branched C.sub.1 -C.sub.4 alkyl radicalR.sub.2 is:a hydrogen atoma C(O)R.sub.4 radical in which R.sub.4 is a straight or branched C.sub.1 -C.sub.4 alkyl groupa C(O)NHR.sub.5 radical in which R.sub.5 is a straight or branched C.sub.1 -C.sub.4 alkyl radical or a phenyl groupA is a C.sub.1 -C.sub.4 alkaline chainR.sub.3 represents:a hydrogen atom, a C.sub.1 -C.sub.4 alkyl radical, a C.sub.3 -C.sub.6 cycloalkyl radical, an alcynyl, nitrile, hydroxyl, carboxamido, pyridyl, phenyl group, or a phenyl group substituted by a halogen atom, a C.sub.1 -C.sub.4 alkyl group, a C.sub.1 -C.sub.4 alkoxy group or a nitro groupan alkenyl radical of the formula: ##STR2## in which R.sub.6, R.sub.7 may, independently of each other, be a hydrogen atom, a C.sub.1 -C.sub.

Abstract: The present invention concerns new 5-monoaryl as.-triazin-3-ones substituted in 2-position, a method of preparing them, and their use as medicaments.The compounds according to the present invention have general formula (I) ##STR1## in which: the bond represented by a dashed line indicates the presence of an optional double bond;A represents a direct N--C bond, a straight or branched C.sub.1 to C.sub.5 alkylene, possibly substituted one or more times by --COOR' or by Ar;R represents --H, --OH, ##STR2## R' represents --H, --OH, straight or branched C.sub.1 to C.sub.7 alkyl, --NH.sub.2 ;Ar represents an aromatic ring having 5 or 6 members possibly containing a heteroatom such as O, N, S and possibly substituted one or more times by a radical selected from among --OH, C.sub.1 to C.sub.4 alkyl, C.sub.1 and C.sub.4 alkoxy, halogen, --CF.sub.3, acetonyloxy, ##STR3## and .gamma.-butyrolactone; as well as their pharmaceutically acceptable salts.

Abstract: The present invention concerns new 2-N-cycloalkylmethyl 3-oxo 5,6-diaryl as-triazines, their method of production, pharmaceutical compositions thereof, and their use as medicaments, for treating pain.The derivatives of 2-N-cycloalkylmethyl 3-oxo 5,6-diaryl as-triazine according to the invention have the general formula I ##STR1## in which Ar represents a phenyl, furyl, thienyl, or pyridyl group, which group may possibly be substituted by a lower C.sub.1 to C.sub.4 alkoxy radical, in particular by the methoxy radical, andn is a whole number having a value of 1 to 4.

Abstract: The invention relates to new chemical compounds which can be used as analgesic drugs and their preparation.The new chemical compounds have the general formula: ##STR1## in which: R is a lower alkylR.sub.1, which is always other than H, is a linear or branched lower alkyl, an allyl, amino alkyl of type ##STR2## in which n=2 to 4, R.sub.2 R.sub.3 represent a lower alkyl; they may also form a heterocycle with the nitrogen atom.Y is a hydrogen, halogen, lower alkyl, alkoxy, ##STR3## R being a lower alkyl. The position of Y is variable on the ring.X=oxygen or sulfur atom.The drugs containing these active principles may be used in the treatment of rheumatismal disturbances and various pains.

Abstract: The invention relates to compounds of the formula ##STR1## in which R and R' are identical or different and may be a hydrogen, an alkyl, a dialkylamino, an alkoxy, a halogen, or a hydroxy. These compounds are useful as drugs in the control of thromboses.