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Serving leading biopharmaceutical companies globally:

Chinese Patent Office
Argus Health
Johnson and Johnson

Generated: November 17, 2017

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Details for Patent: 4,734,416

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Summary for Patent: 4,734,416

Title: Pharmaceutically useful carbostyril derivatives
Abstract:Carbostyril derivatives having antihistamic action and central nervous controlling action are useful as antihistamic agents or central nervous controlling agents. The derivatives are represented by the general formula, ##STR1## wherein R.sup.1 is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms or a phenylalkyl group having an alkylene group containing 1 to 4 carbon atoms; R.sup.2 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or a phenyl group; R.sup.3 is a hydrogen atom, a hydroxy group, an alkyl group having 1 to 4 carbon atoms, an alkanolyoxy group having 1 to 4 carbon atoms or a 3,4,5-trimethoxybenzoyloxy group; R.sup.4 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R.sup.5 is a cycloalkyl group having 3 to 8 carbon atoms, a phenyl group (which may have 1 to 3 substituted groups selected from the group consisting of halogen atoms, alkyl groups having 1 to 4 carbon atoms and alkoxy groups having 1 to 4 carbon atoms), an alkyl group having 1 to 4 carbon atoms (having one substituted group such as a hydroxy group, a phenyl group or an alkanoyloxy group having 1 to 4 carbon atoms), an alkanoyl group having 1 to 4 carbon atoms or benzoyl group; X is a halogen atom; n is 0, or an integer of 1 or 2; Q is an integer of 2 or 3, l and m are respectively an integer of 0 or 1-6, but the sum of l and m should not exceed 6; the carbon-carbon bond at the 3- and 4-positions in the carbostyril skeleton is a single or double bond; and the substituted position of the side chain of ##STR2## is any one of the 4-, 5-, 6-, 7- or 8-positions.
Inventor(s): Banno; Kazuo (Tokushima, JP), Fujioka; Takafuni (Tokushima, JP), Oshiro; Yasuo (Tokushima, JP), Nakagawa; Kazuyuki (Tokushima, JP)
Assignee: Otsuka Pharmaceutical Co., Ltd. (JP)
Application Number:06/024,602
Patent Claim Types:
see list of patent claims
Compound; Composition; Use;

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Foreign Priority and PCT Information for Patent: 4,734,416

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan53-37783Mar 30, 1978

International Patent Family for Patent: 4,734,416

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria376432► Subscribe
Austria376433► Subscribe
Austria376434► Subscribe
Austria376435► Subscribe
AustriaA235179► Subscribe
AustriaA391583► Subscribe
AustriaA391683► Subscribe
AustriaA391783► Subscribe
Australia4548079► Subscribe
Australia515531► Subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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Serving leading biopharmaceutical companies globally:

Daiichi Sankyo
Boehringer Ingelheim
Argus Health

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