Patent number: 8148421
Abstract: A compound represented by the formula (1) or a salt thereof ( represents a single bond, or a double bond; R1 represents hydrogen atom, or an alkyl group; R2 and R3 represent hydrogen atom, or an alkyl group; R4 and R5 represent hydrogen atom, hydroxy group, an alkoxyl group, a halogen atom, or a mono- or di-alkyl-substituted amino group; R6 represents hydrogen atom, cyano group, an alkoxycarbonyl group, or carboxy group; R7 represents one or two of substituents on the benzene ring (the substituents are selected from hydrogen atom, a halogen atom, nitro group, cyano group, hydroxy group, amino group, an alkyl group, and an alkoxyl group); A represents a 5-membered or 6-membered non-aromatic heterocyclic ring containing one or two contiguous sulfur atoms (the sulfur atoms may independently form oxide); W represents oxo group, hydrogen atom, an alkyl group, hydroxy group, an alkoxyl group, or a halogen atom; and X represents oxygen atom, or sulfur atom), or a salt thereof, which has a superior suppressing action
Type:
Grant
Filed:
September 10, 2007
Date of Patent:
April 3, 2012
Assignee:
Fuji Yakuhin Co., Ltd.
Inventors:
Hideo Kato, Osamu Nagata, Yoshiyuki Iwabuchi, Takahiro Sato, Junichiro Uda, Tutomu Inoue, Hiroshi Nakamura, Nobuhide Kawasaki, Ippei Tanaka, Naoki Kurita, Tomohiko Ishikawa