Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-04-26
2005-04-26
Huang, Evelyn Mei (Department: 1625)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Heterocyclic carbon compounds containing a hetero ring...
C514S256000, C514S297000, C514S298000, C514S255050, C544S333000, C544S405000, C544S238000, C544S284000, C544S353000, C546S109000, C546S065000, C546S074000, C546S102000
Reexamination Certificate
active
06884802
ABSTRACT:
Compounds of formula 1, in which Het is an unsubstituted or R6- and/or R7-substituted pyrrolyl, furanyl, thiophenyl, pyrazolyl, imidazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, thiadiazolyl, pyrimidinyl, pyrazinyl or pyradazinyl radical, or an unsubstituted or R6- and/or R7-substituted fused bi- or tricyclic ring system comprising at least one aromatic ring and up to 4 heteroatoms-selected from the group consisting of O (oxygen), S (sulfur), N (nitrogen)- which is bonded to the phenanthridinyl radical via one of the rings comprising one or more heteroatoms, are active PDE4 inhibitors.
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Burunouf et al. Annual Reports in Medicinal Chemistry, 1998, Academic Press, Chapter 10, pp. 91-109.*
Kametani, T. et al., “Cyclised Products in the Synthesis of 6-Substituted Phenanthridines by Phenolic Cyclisation”,J. Chem. Soc.( C ) , pp 1805-1808, (1971).
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ALTANA Pharma AG
Huang Evelyn Mei
McGee Sheldon M.
Nath Gary M.
Nath & Associates PLLC
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