Organic compounds -- part of the class 532-570 series – Organic compounds – Nitrogen attached directly or indirectly to the purine ring...
Reexamination Certificate
2006-03-28
2006-03-28
Saeed, Kamal A. (Department: 1626)
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitrogen attached directly or indirectly to the purine ring...
Reexamination Certificate
active
07019136
ABSTRACT:
A compound of formula (I):R1is hydrogen or alkyl optionally substituted by hydroxy, alkoxy, or alkylthio, R2is hydrogen, alkyl, hydroxyalkyl, alkylcarbonyloxyalkyl, alkoxyalkyl, alkylthioalkyl, alkenyl, cycloalkylalkyl, heterocyclylalkyl, aralkyl in which the aryl ring thereof is optionally fused to a 5-membered heterocyclic group or is optionally substituted by one or more substituents selected from alkoxy, amino, alkylamino, dialkylamino, acylamino, halogen, hydroxy, aminosulfonyl, alkylaminosulfonyl, dialkylaminosulfonyl, alkylsulfonylamino or dialkylaminosulfonylamino, R3is hydrogen or alkyl optionally substituted by hydroxy, alkoxy, or alkylthio, R4is hydrogen or alkyl, R5is a quinolinyl, isoquinolinyl or oxodihydroisoquinolinyl group optionally fused to a 5-membered heterocyclic group and optionally substituted by one or more substituents selected from halogen, cyano, hydroxy, alkyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkoxy, alkylthio, alkenyl, alkoxycarbonyl, alkynyl, carboxyl, acyl, a group of formula —N(R6)R7, aryl optionally substituted by one or more substituents selected from halogen or alkoxy, or heteroaryl having 5 or 6 ring atoms attached through a ring carbon atom to the indicated carbon atom, and R6and R7are each independently hydrogen or alkyl optionally substituted by hydroxy or alkoxy or one of R6and R7is hydrogen and the other is acyl, or R6and R7together with the nitrogen atom to which they are attached denote a 5- or 6-membered heterocyclyl group.
REFERENCES:
patent: 2879271 (1959-03-01), Kallischnigg
patent: 4599338 (1986-07-01), Regnier et al.
patent: 94/28902 (1994-12-01), None
patent: 94/28904 (1994-12-01), None
patent: 99/62905 (1999-12-01), None
patent: 00/37061 (2000-06-01), None
Bhalay Gurdip
Collingwood Stephen Paul
Fairhurst Robin Alec
Gomez Sylvie Felicite
Naef Reto
Houghton Gregory C.
Novartis AG
Saeed Kamal A.
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