Pyrazole compounds

Organic compounds -- part of the class 532-570 series – Organic compounds – Four or more ring nitrogens in the bicyclo ring system

Reexamination Certificate

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Details

C544S060000, C544S140000, C544S364000, C544S367000, C544S370000, C544S371000, C546S210000

Reexamination Certificate

active

07612201

ABSTRACT:
Compounds of formula (IA) or (IB) or a salt, N-oxide, hydrate or solvate thereof are inhibitors of HSP90, and are of value in the treatment of diseases responsive to HSP90 inhibition such as cancers. In the formulae, Ar is an aryl, aryl(C1-C6alkyl), aryl(C1-C6alkyl), heteroaryl, heteroarylaryl(C1-C6alkyl), or heteroarylaryl(C1-C6alkyl) group, any of which being optionally substituted in the aryl or heteroaryl part thereof; R1, is hydrogen or optionally substituted C1-C6alkyl; R2is hydrogen, optionally substituted cycloalkyl, cycloalkenyl, C1-C6alkyl, C1-C6alkenyl, or C1-C6alkynyl; or a carboxyl, carboxamide or carboxyl ester group; and ring A is a non aromatic carbocyclic or heterocyclic ring wherein (i) a ring carbon is optionally substituted, and/or (ii) a ring nitrogen is optionally substituted by a group of formula -(Alk1)p(Cyc)n-(Alk3)m-(Z)r (Alk2)sQ where Alk1, Alk2and Alk3are optionally substituted C1-C3alkyl, Cyc is an optionally substituted carbocyclic or heterocyclic radical; m, n, p, r and s are independently 0 or 1, Z is -0-, —S—, —(C═O)—, —S02-, —C(═O)O—, —OC(═O)—, —NW—, —C(═O)NRA-, —NRAC(═O)—, —SO2NRA—, or —NRASO2— wherein RAis hydrogen or C1-C6alkyl, and Q is hydrogen or an optionally substituted carbocyclic or heterocyclic radical.

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Database CA 'On

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