Phthalazinone derivatives

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C544S236000, C544S223000, C544S220000, C544S182000

Reexamination Certificate

active

07470688

ABSTRACT:
A compound of the formula (I):wherein:A and B together represent an optionally substituted, fused aromatic ring;D is selected from:(i)where Y1is selected from CH and N, Y2is selected from CH and N, Y3is selected from CH, CF and N; and(ii)where Q is O or S;RDis:whereinRN1is selected from H and optionally substituted C1-10alkyl;X is selected from a single bond, NRN2, CRC3RC4and C═O;RN2is selected from H and optionally substituted C1-10alkyl;RC3and RC4are independently selected from H, R, C(═O)OR, where R is optionally substituted C1-10alkyl, optionally substituted C5-20aryl or optionally substituted C3-20heterocyclyl;Y is selected from NRN3and CRC1RC2;RC1and RC2are independently selected from H, R, C(═O)OR, where R is optionally substituted C1-10alkyl, optionally substituted C5-20aryl or optionally substituted C3-20heterocyclyl; RC1and RC2together with the carbon atom to which they are attached may forman optionally substituted spiro-fused C5-7carbocylic or heterocyclic ring; andwhen X is a single bond RN1and RC2may together with the N and C atoms to which they are bound, form an optionally substituted C5-7heterocyclic ring;and when X is CRC3RC4, RC2and RC4may together form an additional bond, such that there is a double bond between the atoms substituted by RC1and RC3.

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