Benzimidazoles having antithrombotic activity

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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C514S210210, C514S234500, C514S252060, C514S269000, C514S274000, C514S332000, C514S338000, C514S369000, C514S370000, C514S394000, C544S116000, C544S238000, C544S298000, C544S315000, C544S316000, C544S317000, C544S318000, C544S319000, C544S320000, C544S370000, C546S199000, C546S256000, C546S273400, C548S143000, C548S245000, C548S253000, C548S304400, C548S304700, C548S309700, C548S310100

Reexamination Certificate

active

06248770

ABSTRACT:

DESCRIPTION OF THE INVENTION
The present invention relates to benzimidazoles of general formula
their tautomers, their stereoisomers, the mixtures thereof, their prodrugs, the derivatives thereof which contain a group which is negatively charged under physiological conditions instead of a carboxy group, and the salts thereof, particularly the physiologically acceptable salts thereof with inorganic or organic acids or bases which have valuable properties.
The compounds of the above general formula I wherein R
c
denotes a cyano group are valuable intermediates for preparing the other compounds of general formula I, and the compounds of the above general formula I wherein R
c
denotes one of the following amidino groups, as well as their tautomers, their stereoisomers, the mixtures thereof, their prodrugs, the derivatives thereof which contain a group which is negatively charged under physiological conditions instead of a carboxy group, and their salts, particularly the physiologically acceptable salts thereof with
The present application thus relates to the new compounds of the above general formula I as well as the preparation thereof, the pharmaceutical compositions containing the pharmacologically active compounds, the preparation and use thereof.
In the above general formula
Ar denotes a phenylene or naphthylene group optionally substituted by a fluorine, chlorine or bromine atom, by a trifluoromethyl, C
1-3
-alkyl or C
1-3
-alkoxy group,
a thienylene, thiazolylene, pyridinylene, pyrimidinylene, pyrazinylene or pyridazinylene group optionally substituted in the carbon skeleton by a C
1-3
-alkyl group,
A denotes a C
1-3
-alkylene group,
B denotes an oxygen or sulphur atom, a methylene, carbonyl, sulphinyl or sulphonyl group, an imino group optionally substituted by a C
1-3
-alkyl group wherein the alkyl moiety may be mono- or disubstituted by a carboxy group,
R
a
denotes an R
1
—CO—C
3-5
-cycloalkyl group wherein
R
1
denotes a C
1-3
-alkoxy, amino, C
1-4
-alkylamino or di-(C
1-4
-alkyl)-amino group wherein each alkyl moiety may be substituted by a carboxy group,
a 4- to 7-memberecl cycloalkyleneimino or cycloalkenyleneimino group which may be substituted by a hydroxy group or by one or two C
1-3
-alkyl groups, whilst an alkyl substituent may simultaneously be substituted by a hydroxy, C
1-3
-alkoxy, carboxy, carboxy-C
1-3
-alkoxy, carboxy-C
1-3
-alkylamino, N-(C
1-3
-alkyl)-N-(carboxy-C
1-3
-allyl)-amino, carboxy-C
1-3
-alkylaminocarbonyl, N-(C
1-3
-alkyl)-N-(carboxy-C
1-3
-alkyl)-aminocarbonyl, carboxy-C
1-3
-alkylaminocarbonylamino, 1-(C
1-3
-alkyl)-3-(carboxy-C
1-3
-alkyl)-aminocarbonylamino, 3-(C
1-3
-alkyl)-3-(carboxy-C
1-3
-alkyl)-aminocarbonylamino or 1,3-di-(C
1-3
-alkyl)-3-(carboxy-C
1-3
-alkyl)-aminocarbonylamino group,
a 4- to 7-membered cycloalkenyleneimino group substituted by a hydroxy group,
a 5- to 7-membered cycloalkyleneimino group optionally substituted by a C
1-3
-alkyl group, to which a phenyl ring is fused via two adjacent carbon atoms,
a morpholino, piperazino, N-(C
1-3
-alkyl)-piperazino, pyrrolino, 3,4-dehydro-piperidino or pyrrol-1-yl group,
an R
2
-CX-C
3-5
-cycloalkyl group wherein
R
2
denotes a phenyl, naphthyl or monocyclic 5- or 6-membered heteroaryl group optionally substituted by a C
1-3
-alkyl group, wherein the 6-membered heteroaryl group contains one, two or three nitrogen atoms and the 5-membered heteroaryl group contains an imino group optionally substituted by a C
1-3
-alkyl group, an oxygen or sulphur atom or an imino group optionally substituted by a C
1-3
-alkyl group and an oxygen or sulphur atom or one or two nitrogen atoms and the abovementioned alkyl substituent may be substituted by a carboxy, carboxy-C
1-3
-alkoxy, carboxy-C
1-3
-alkylamino or N-(C
1-3
-alkyl)-carboxy-C
1-3
-alkylamino group, and
X denotes an oxygen atom, a C
1-3
-alkylimino, C
1-3
-alkoxyimino, C
1-3
-alkylhydrazino, di-(C
1-3
-alkyl)-hydrazino, C
2-4
-alkanoyl-hydrazino, N-(C
1-3
-alkyl)-C
2-4
-alkanoylhydrazino or C
1-3
-alkylidene group each of which may be substituted in the alkyl or alkanoyl moiety or in the alkyl and alkanoyl moieties by a carboxy group,
a C
1-3
-alkyl or C
3-5
-cycloalkyl group substituted by an imidazole or imidazolone group wherein
the imidazole ring may be substituted by a phenyl or carboxy group and by one or two C
1-3
-alkyl groups or by one, two or three C
1-3
-alkyl groups, wherein the substituents may be identical or different and one of the abovementioned alkyl substituents may simultaneously be substituted by a carboxy group or may be substituted in the 2 or 3 position by an amino, C
2-4
-alkanoylamino, C
1-3
-alkylamino, N-(C
2-4
-alkanoyl)-C
1-3
-alkylamino or di-(C
1-3
-alkyl)-amino group, and
the imidazolone ring may be substituted by a C
1-3
-alkyl group, whilst the alkyl substituent may be substituted by a carboxy group or in the 2 or 3 position by an amino, C
2-4
-alkanoylamino, C
1-3
-alkylamino, N-(C
2-4
-alkanoyl)-C
1-3
-alkylamino or di-(C
1-3
-alkyl)-amino group, and
additionally a phenyl or pyridine ring may be fused to the abovementioned imidazole or imidazolone rings via two adjacent carbon atoms,
an imidazolidine-2,4-dion-5-yl group which may be substituted by one or two C
1-3
-alkyl groups, whilst at the same time an alkyl substituent may be substituted by a carboxy group,
a C
1-4
-alkyl group which is substituted
by a C
1-3
-alkyl-Y
1
-C
1-3
-alkyl, HOOC-C
1-3
-alkyl-Y
1
-C
1-3
-alkyl, tetrazolyl-C
1-3-
alkyl-Y
2
, R
3
NR
4
— or R
3
NR
4
-C
1-3
-alkyl group and
by an isoxazolidinylcarbonyl group optionally substituted by a C
1-3
-alkyl group, by a pyrrolino-carbonyl, 3,4-dehydropiperidinocarbonyl, pyrrol-1-yl-carbonyl, carboxy, aminocarbonyl, C
1-3
-alkylaminocarbonyl, di-(C
1-3
-alkyl)-aminocarbonyl or 4- to 7-membered cycloalkyleneiminocarbonyl group, whilst in the abovementioned groups the cycloalkyleneimino moiety may be substituted by one or two C
1-3
-alkyl groups and at the same time each alkyl moiety or alkyl substituent in the abovementioned C
1-3
-alkylaminocarbonyl, di-(C
1-3
-alkyl)-aminocarbonyl or cycloalkyleneiminocarbonyl groups may be substituted by a carboxy group, and the remaining hydrogen atoms of the C
1-4
-alkyl group may be wholly or partially replaced by fluorine atoms wherein
R
3
denotes a hydrogen atom or a C
1-3
-alkyl group optionally substituted by a carboxy group and
R
4
denotes a hydrogen atom, a C
1-3
-alkyl-Y
1
-C
1-3
-alkyl-Y
2
, carboxy-C
1-3
-alkyl-Y
1
-C
1-3
-alkyl-Y
2
, C
1-3
-alkyl-Y
2
or carboxy-C
1-3
-alkyl-Y
2
group or
R
3
and R
4
together with the nitrogen atom between them denote an 4- to 7-membered cycloalkyleneimino group optionally substituted by a carboxy, C
1-3
-alkyl or carboxy-C
1-3
-alkyl group wherein
Y
1
denotes a carbon—carbon bond, an oxygen atom, a sulphenyl, sulphinyl, sulphonyl, —NH—, —NH—CO— or —NH—CO—NH— group and
Y
2
denotes a carbon—nitrogen bond or a carbonyl, sulphonyl, imino or —NH—CO— group, wherein the carbonyl group of the —NH—CO— group is linked to the nitrogen atom of the R
3
NR
4
-group, and the imino groups occurring in the definition of the groups Y
1
and Y
2
may each additionally be substituted by a C
1-3
-alkyl or carboxy-C
1-3
-alkyl group,
a C
1-3
-alkyl or C
3-5
-cycloalkyl group substituted by a R
5
NR
6
-group wherein
R
5
denotes a hydrogen atom, a C
1-3
-alkyl, C
5-7
-cycloalkyl, phenylcarbonyl, phenylsulphonyl or pyridinyl group and
R
6
denotes a C
1-3
-alkyl, carboxy-C
1-3
-alkyl or carboxy-C
1-3
-alkylcarbonyl group,
a C
1-3
-alkyl group which is substituted by a C
2-4
-alkanoyl or C
5-7
-cycloalkanoyl group and by a C
1-3
-alkyl group substituted by a chlorine, bromine or iodine atom,
R
b
denotes a hydrogen atom or a C
1-3
-alkyl group and
R
c
denotes a cyano group or an amidino group optionally substituted by one or two C
1-3
-alkyl groups.
The carboxy groups mentioned in the definitions of the abovementioned groups may also be replaced by a group which can be converted in vivo into a carboxy group or by a group which is negatively charged under physiological conditions, or
the amino and imino groups me

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