Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Reexamination Certificate
2005-06-13
2009-10-06
Wilson, James O (Department: 1624)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
C544S255000
Reexamination Certificate
active
07598254
ABSTRACT:
The invention relates to compounds of the following formula (I) or their salts:in which R1is a group of phenyl, naphthyl, pyridyl or the like which may have a substituent such as an alkyl group having 1-8 carbon atoms, an alkoxy group having 1-8 carbon atoms, an alkoxycarbonyl group having 2-8 carbon atoms, carboxyl, halogen, hydroxyl, nitro, or cyano; R2is cyano, nitro, or the like; R3is hydroxyl or the like; X is oxygen, sulfur, or the like; and Y is oxygen or sulfur, and a xanthine oxidase inhibitor containing the compound.
REFERENCES:
patent: 7253154 (2007-08-01), Yoshida et al.
patent: 2007/0265283 (2007-11-01), Yoshida et al.
Falco et. al., JACS, 1952, 74, 4897-4902.
Kobayashi Kunio
Kobayashi Tadashi
Mochiduki Nobutaka
Shinohara Yoriko
Yamakawa Tomio
Costellia Jeffrey L.
Moore Susanna
Nippon Chemiphar Co., Ltd.
Nixon & Peabody LLP
Wilson James O
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