Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Reexamination Certificate
2005-03-04
2010-06-08
Davis, Zinna N (Department: 1625)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
C514S332000, C514S345000, C544S314000, C546S261000, C546S301000
Reexamination Certificate
active
07732456
ABSTRACT:
The invention provides pyridone derivatives represented by a general formula (I)[in the formula, R1and R2may be same or different and stands for H, etc., or R1and R2may form an aliphatic nitrogen-containing heterocyclic group together with the N to which they bind; X1-X3may be same or different and stand for methine or N, provided not all of them simultaneously stand for nitrogen; X4-X7may be same or different and stand for methine or N, provided that three or more of them do not simultaneously stand for N; Y1and Y3may be same or different and stand for single bond, —O—, —NR—, —S—, etc; Y2stands for lower lkylene, etc.; R stands for H, etc., L stands for methylene; Z1and Z2may be same or different and stand for single bond or lower alkylene; or R1, L and Z2may form an aliphatic nitrogen-containing heterocyclic group with the N to which R1binds; and Ar stands for aromatic carbocyclic group, etc.].
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Haga Yuji
Kanatani Akio
Mizutani Sayaka
Naya Akira
Otake Norikazu
Banyu Pharmaceutical Co. Ltd.
Davis Zinna N
Fair Janet E.
Todaro John C.
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