Indenoindolone compounds

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C514S410000

Reexamination Certificate

active

06844445

ABSTRACT:
Compound of formula (I):wherein:R represents hydrogen or a group selected from alkenyl and optionally substituted alkyl,each of R1to R8, which may be identical or different, represents hydrogen or a group selected from alkyl, alkenyl, hydroxy, alkoxy, alkenyloxy, arylalkyl, arylalkoxy, carboxy, acyloxy and arylcarbonyloxy,or one of R1to R8forms with an adjacent one R1to R8an alkylenedioxy group,its optical isomers when they exist, and addition salts thereof with a pharmaceutically acceptable acid or base,with the proviso that:when R does not represent hydrogen, then at least one of R1to R8represents hydroxy or acyloxy,and the compounds of formula (I) are other than indeno[1,2-b]indol-10(5H)-one and medicinal products containing the same which are useful for treatment of disorders of the melatoninergic system.

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