CHROMENE DERIVATIVES, METHOD FOR PREPARING SAME, AND PHARMACEUTICAL COMPOSITIONS CONTAINING SAME

摘要

The invention relates to the compounds of formula (I), where R1 and R2 together form the carbon chain of formula (II), where: R3 is a hydrogen atom or an alkyl grouping, R4 is a hydrogen atom, an alkyl, aryl, heteroaryl, 3,4-dioxocyclobutenyle, alkylcarbonyl, cycloalkylcarbonyl, heterocycloalkylcarbonyl, benzoyl, arylsulfonyl or heteroarylsulfonyl grouping, each of said groups being optionally substituted, R3 and R4 forming, together with the nitrogen atom having the sane, a ring comprising 5 to 8 members, the thus formed ring being optionally substituted. The invention can be used for drugs.