17B-hydroxysteroid dehydrogenase inhibitors

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

Reexamination Certificate

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C514S176000

Reexamination Certificate

active

08003783

ABSTRACT:
There is provided a compound of Formula (III)whereinR1is a selected from an alkyloxyalkyl group, a nitrile group, alkylaryl group, alkenylaryl group, alkylheteroaryl group, alkenylheteroaryl group, ═N—O—alkyl or ═N—O—H group, branched alkenyl, alkyl-alcohol group, amide or alkylamide or —CHO so that R1together with R3provide the enol tautomer or R1together with R3form a pyrazole, wherein (a) R4is ═N—O-alkyl or ═N—O—H group, (b) the pyrazole is substituted with one of alkyl-OH group, alkyl ester group, alkyloxyalkyl group, branched alkyl group, and an amide and/or (c) the 2-position is substituted with a group selected from —OH and —O-hydrocarbyl or a heteroaryl ring;R2is selected from —OH and a sulphamate group; andR3is selected from —OH or ═O; wherein the ring system may be further substituted with one or more hydroxyl, alkyl, alkoxy, alkinyl or halo substituents.

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