PROCEDIMIENTO PARA LA PREPARACION DE 5,6,7,8-TETRAHIDROPIRA-ZOLO (3,4-B)(1,5)DIAZEPIN-1H,4H-5,7-DIONAS

摘要

Compound of the general formula I in which R1 and R2 are identical or different and represent hydrogen atoms or alkyl groups with 1-6 C atoms, it also being possible for one of the radicals R1 and R2 to be, in each case, a benzyl, trifluoromethyl or phenyl group, R3 denotes a hydrogen atom, an alkyl group which has 1-6 C atoms and is optionally substituted by an aryl group, an alkoxy group with 1-6 C atoms, a trifluoromethyl group, a dialkylamino group with 2-12 C atoms or a cycloalkyl group with 3-6 C atoms, an alkenyl or alkynyl group with 2-6 C atoms, a cycloalkyl group with 3-6 C atoms or a carbalkoxy group with 2-6 C atoms, R4 is a hydrogen atom and R5 can be a phenyl group, a phenyl group which is monosubstituted or disubstituted by methyl Cl, Br, F, nitro, cyano and or trifluoromethyl or a pyridyl group and medicaments containing same.