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  • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
  • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
  • C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
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  • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
  • C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
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  • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
  • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
  • C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
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  • C07D233/56—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached to ring carbon atoms
  • C07D233/60—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached to ring carbon atoms with hydrocarbon radicals, substituted by oxygen or sulfur atoms, attached to ring nitrogen atoms
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  • C07D295/00—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
  • C07D295/22—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with hetero atoms directly attached to ring nitrogen atoms
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  • C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
  • C07D307/26—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
  • C07D307/30—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
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  • C07D405/12—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links
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  • C07D417/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings linked by a chain containing hetero atoms as chain links

Definitions

• the present invention relates to substituted 2-thio-3,5-dicyano-4-aryl-6-aminopyridines, a process for their preparation and their use as active ingredients for
• the present invention furthermore relates to the use of adenosine receptor-selective ligands for the prophylaxis and / or treatment of various diseases.
• Adenosine a nucleoside of adenine and D-ribose, is an endogenous factor with cell-protective activity, especially under cell-damaging conditions with limited oxygen and substrate supply, e.g. with ischemia in various organs (e.g. heart and brain).
• Adenosine arises intracellularly during the breakdown of adenosine 5'-monophosphate (AMP) and S-adenosylhomocyte as an intermediate, but can be released from the cell and then functions as a hormone-like substance or neurotransmitter by binding to specific receptors.
• AMP adenosine 5'-monophosphate
• S-adenosylhomocyte as an intermediate, but can be released from the cell and then functions as a hormone-like substance or neurotransmitter by binding to specific receptors.
• adenosine Under normoxic conditions, the concentration of free adenosine in the extracellular space is very low. The extracellular concentration of adenosine increases dramatically in the affected organs under ischemic or hypoxic conditions. For example, it is known that adenosine inhibits platelet aggregation and increases blood flow to the coronary arteries. It also affects the heart rate, the release of neurotransmitters and lymphocyte differentiation.
• adenosine aim to increase the oxygen supply of the affected organs or to reduce the metabolism of these organs in order to do so to achieve an adaptation of the organ metabolism to the organ blood flow under ischemic or hypoxic conditions.
• adenosine The action of adenosine is mediated via specific receptors. So far, the subtypes AI, A2a, A2b and A3 are known. The effects of these adenosine
• Receptors are mediated intracellularly by the messenger cAMP.
• the messenger cAMP In the case of the binding of adenosine to the A2a or A2b receptors, activation of the membrane-bound adenylate cyclase leads to an increase in the intracellular cAMP, while the binding of the adenosine to the AI or A3 receptors results in a decrease in the adenylate cyclase intracellular cAMP content caused.
• adenosine receptor-selective ligands refer to substances which bind selectively to one or more subtypes of the adenosine receptors and which either mimic the action of the adenosine (adenosine
• Agonists or block its effects (adenosine antagonists).
• Adenosine receptor-selective ligands can be divided into different classes according to their receptor selectivity, e.g. in ligands that bind selectively to the AI or A2 receptors of adenosine, in the latter also, for example, those that bind selectively to the A2a or A2b receptors of adenosine.
• Adenosine receptor ligands are also possible, which bind selectively to several subtypes of the adenosine receptors, e.g. Ligands that bind selectively to the AI and A2, but not the A3 receptors of adenosine.
• the previously mentioned receptor selectivity can be determined by the action of the substances on cell lines which, after stable transfection with the corresponding cDNA, express the respective receptor subtypes (see in this regard the publication ME Olah, H. Ren, J. Ostrowski ⁇ KA Jacobson, GL Stiles , "Cloning, expression, and characterization of the unique bovine AI adenosine receptor. Studies on the ligand binding site by site-directed mutagenesis.” In J Biol. Chem. 267 (1992) Pages 10764-10770, the disclosure of which is hereby fully incorporated by reference).
• ligands known from the prior art which are considered to be “adenosine receptor-specific", are predominantly derivatives based on natural adenosine (S.-A. Poulsen and RJ Quinn, "Adenosine receptors: new oppor- tunities for future drugs "in Bioorganic and Medicinal Chemistry 6 (1998)
• the object of the following invention is now to find or provide compounds which have a wide therapeutic range and can serve as active ingredients for the prophylaxis and / or treatment of various diseases.
• diseases of the cardiovascular system cardiovascular diseases
• inflammatory diseases besides also Disorders of the genitourinary system, the respiratory tract, the central nervous system, diabetes (especially diabetes mellitus) and cancer.
• Another object of the present invention is to find or provide adenosine receptor-selective ligands of high activity specificity for the aforementioned purposes.
• the present invention thus relates to compounds of the general formula (I)
• R 1 , R 2 , R 3 are the same or different and are independently selected from the group of the following substituents: hydrogen;
• R 5 denotes:
• R 5 represents optionally substituted 5- to 6-membered heteroaryl with up to 3 heteroatoms from the series N, O and / or S,
• heterocycle and the heteroaryl ring each have two adjacent ring atoms with optionally substituted (C 6 -C ⁇ o) aryl or optionally substituted (C 4 -C) -
• Cycloalkyl can be fused
• R 6 and R 7 are the same or different and are for
• Hydrogen optionally substituted (-CC 8 ) alkyl; optionally substituted (C 6 -C ⁇ o) aryl; or represent optionally substituted 5- to 6-membered heteroaryl with up to 3 heteroatoms from the series N, O and / or S.
• R 4 represents straight-chain or branched (dC 8 ) alkyl or (C 2 -C 8 ) alkenyl, which are optionally substituted one or more times with
• heterocycle and the heteroaryl ring can in each case be fused via two adjacent ring atoms with optionally substituted (C 6 -C 10 ) aryl,
• the present invention therefore also relates to the use of the abovementioned compounds of the general formula (I), including the compounds excepted above, for the prophylaxis and / or treatment of diseases.
• the compounds of the formula (I) can exist in stereoisomeric forms which either behave like image and mirror image (enantiomers) or do not behave like image and mirror image (diastereomers).
• the invention relates both to the enantiomers or diastereomers and to their respective mixtures. Like the diastereomers, the racemic forms can be separated into the stereoisomerically uniform constituents in a known manner.
• the present invention also relates to the other tautomers of the compounds of the
• Physiologically acceptable salts of the compounds of formula (I) can be salts of the substances according to the invention with mineral acids, carboxylic acids or sulfonic acids.
• mineral acids for example, particular preference is given to Salts with hydrochloric acid, hydrobromic acid,
• Sulfuric acid phosphoric acid, methanesulfonic acid, ethanesulfonic acid, toluenesulfonic acid, benzenesulfonic acid, naphthalenedisulfonic acid, trifluoroacetic acid, acetic acid, propionic acid, lactic acid, tartaric acid, citric acid, fumaric acid, maleic acid or benzoic acid.
• Salts which can also be mentioned are salts with customary bases, such as, for example, alkali metal salts (for example sodium or potassium salts), alkaline earth metal salts (for example calcium or magnesium salts) or ammonium salts derived from ammonia or organic amines such as, for example, diethylamine, triethylamine, ethyldiisopropylamine, procaine, dibenzylamine , N-methylmorpholine, dihydroabietylamine, 1-ephenamine or methylpiperidine.
• alkali metal salts for example sodium or potassium salts
• alkaline earth metal salts for example calcium or magnesium salts
• ammonium salts derived from ammonia or organic amines such as, for example, diethylamine, triethylamine, ethyldiisopropylamine, procaine, dibenzylamine , N-methylmorpholine, dihydroabietylamine, 1-ephenamine or
• Halogen generally represents fluorine, chlorine, bromine or iodine. Fluorine, chlorine or bromine are preferred. Fluorine or are very particularly preferred
• (-C 8 ) alkyl, (C] -C 6 ) alkyl or (C r C 4 ) alkyl in the context of the present invention is a straight-chain or branched alkyl radical having 1 to 8; 1 to 6 or 1 to 4 carbon atoms. Examples include:
• a straight-chain or branched alkyl radical having 1 to 6 carbon atoms is preferred.
• a straight-chain or branched alkyl radical having 1 to 4 carbon atoms is particularly preferred.
• Optionally substituted (dC 8 ) -alkyl, (-CC 6 ) -alkyl or (-C-C 4 ) -Akkyl stands for a straight-chain or branched alkyl radical as defined above with 1 to 8; 1 to 6 or 1 to 4 carbon atoms, which in turn can be substituted one or more times, identically or differently.
• substituents can be mentioned in particular as substituents: halogen (fluorine, chlorine, bromine, iodine); cyano; nitro; carboxyl; hydroxy; straight-chain or branched (dC 8 ) alkoxy, preferably (dC 6 ) alkoxy, in particular (C] -C 4 ) alkoxy, the alkoxy radical in turn being optionally substituted; straight-chain or branched (C -C 8 ) alkenyl, preferably (C 2 -C 6 ) alkenyl, in particular (C 2 -C) alkenyl, it being possible for the alkenyl radical in turn to be optionally substituted; (C 6 -C ⁇ 0 ) aryl, in particular phenyl or naphthyl, where the (C 6 -C 10 ) aryl radical may in turn be optionally substituted; (C] -C 4 ) -alkylsulfonyloxy, where the (dC) )
• aryl in the context of the present invention is an aromatic radical having 6 to 10 carbon atoms.
• Preferred aryl radicals are phenyl and naphthyl.
• optionally substituted (C 6 -C] p) aryl in the context of the present invention stands for an aromatic radical having 6 to 10 carbon atoms as defined above, which in turn can be substituted one or more times, identically or differently, in particular with: halogen (fluorine, chlorine, bromine, iodine); cyano; nitro; carboxyl; hydroxy; straight-chain or branched (dC 8 ) -alkyl, preferably (-C-C 6 ) -alkyl, in particular (dC) -
• Alkyl where the alkyl radical may in turn be optionally substituted; straight-chain or branched (-C-C 8 ) alkoxy, preferably (dC 6 ) alkoxy, in particular (dC 4 ) alkoxy, where the alkoxy radical in turn can be optionally substituted; straight-chain or branched (C 2 -C 8 ) alkenyl, preferably (C 2 -C 6 ) alkenyl, in particular (C 2 -C 4 ) alkenyl, it being possible for the alkenyl radical in turn to be optionally substituted; straight-chain or branched (dC 8 ) thioalkyl, where the thioalkyl radical in turn can be optionally substituted; straight-chain or branched mono-, di- and / or trihalo (C 1 -C 8 ) alkyl, in particular trifluoromethyl; straight-chain or branched mono-, di- and / or trihalo (-C-C 8 ) al
• (C 6 -C ⁇ 0 ) aryloxy stands for a group -O- (C 6 -C ⁇ o) aryl, in particular a group -O-phenyl or -O-naphthyl, where otherwise the previous definition of (C 6 - C ⁇ o) aryl can be referenced.
• Optionally substituted (C 6 -C ⁇ 0 ) aryloxy denotes a group as defined above -O- (C 6 -C 10 ) aryl, with regard to the substituents of the (C 6 -C 10 ) aryl group on the above definition under optionally substituted (C 6 -C 10 ) aryl can be referenced.
• a straight-chain or branched alkoxy radical having 1 to 6 carbon atoms is preferred.
• a straight-chain or branched alkoxy radical having 1 to 4 carbon atoms is particularly preferred.
• Optionally substituted (-C 8 -C) alkoxy, (-C 6 -C) alkoxy or (-C -C 4 ) alkoxy in the context of the present invention denotes a straight-chain or branched alkoxy radical as defined above with 1 to 8, 1 to 6 or 1 to 4 carbon atoms, which may optionally be substituted one or more times, identically or differently, in particular with the following substituents tuenten: halogen (fluorine, chlorine, bromine, iodine); cyano; nitro; carboxyl; hydroxy; straight-chain or branched (C -C 8 ) alkenyl, preferably (C 2 -C 6 ) alkenyl, in particular (C 2 -C 4 ) alkenyl, it being possible for the alkenyl radical in turn to be optionally substituted; straight-chain or branched (-C-C 8 ) thioalkyl, where the thioalkyl radical may in turn be optionally
• (C 3 -C 7 ) cycloalkyl generally represents a carbon ring having 3 to 7 carbon atoms, such as, for example, cyclopropyl,
• Optionally substituted (C 3 -C 7 ) cycloalkyl in the context of the invention generally represents a (C 3 -C 7 ) cycloalkyl radical as defined above, which can optionally be substituted one or more times, identically or differently, in particular with a (-C 8 ) alkyl group, preferably a (C 6 -C 6 ) alkyl group, very particularly preferably a (C 1 -C 8) alkyl group, which in turn can be substituted one or more times as previously defined.
• a 5- to 6-membered aromatic heterocycle with up to 3 heteroatoms from the series S, N and / or O generally stands for a monocyclic heteroaromatic in the context of the invention, which has a ring carbon atom of the heteroaromatic, optionally also a ring nitrogen atom of Heteroaromatics, is linked.
• Examples include: furanyl (e.g. furan-2-yl, furan-3-yl), pyrrolyl (e.g. pyrrol-1-yl, pyrrol-2-yl, pyrrol-3-yl),
• heterocycle as defined above which can be substituted one or more times, identically or differently, with nitro; amino; guanidino; aminocarbonyl; Halogen, preferably chlorine or fluorine; in turn optionally substituted (dC 6 ) alkyl, preferably (C 1 -C 4 ) alkyl, as previously defined; or with in turn optionally substituted (C 6 -C ⁇ o) aryl as previously defined.
• R 1 , R 2 , R 3 are the same or different and are independently selected from the group of the following substituents: hydrogen;
• R> 5 denotes:
• Hydrogen hydroxy; optionally substituted (-C-C ⁇ ) alkyl; optionally substituted (C 3 -C 7 ) cycloalkyl; optionally substituted (dd) alkoxy; optionally substituted phenyl or naphthyl; optionally substituted phenyloxy or naphthyloxy; or
• phenyl or naphthyl gum can be fused via two adjacent ring atoms with optionally substituted (C 4 -C 7 ) cycloalkyl,
• R 5 represents optionally substituted 5- to 6-membered heteroaryl with up to 3 heteroatoms from the series N, O and / or S,
• heterocycle and the heteroaryl ring can in each case be fused via two adjacent ring atoms with optionally substituted phenyl or naphthyl or optionally substituted (C -C) cycloalkyl,
• R 6 and R 7 are the same or different and are hydrogen; optionally substituted (-CC 6 ) alkyl; optionally substituted phenyl or naphthyl; or represent optionally substituted 5- to 6-membered heteroaryl with up to 3 heteroatoms from the series N, O and / or S.
• R 8 NR 6 R 7 with R 6 and R 7 as previously defined; optionally substituted (-C-C ö ) alkyl; (C, -C 6 ) alkoxy; optionally substituted phenyl or naphthyl;
• Phenyloxy or naphthyloxy; or -O- (CH 2 ) n -phenyl with n 1, 2 or 3,
• R 4 stands for straight-chain or branched (-CC 6 ) -alkyl or (C 2 -C 6 ) -alkenyl, which are optionally substituted one or more times with
• heteroatoms from the series N, O and / or S optionally substituted phenyl or naphthyl; or with a 5- to 7-membered saturated or unsaturated heterocycle with up to 3 heteroatoms from the series N, O and / or S, which in turn may be one or more, identical or different, with an oxo group
• heterocycle and the heteroaryl ring each have two adjacent ring atoms with optionally substituted phenyl or
• Particularly preferred compounds are the compounds of the general formula
• R 1 , R 2 , R 3 are the same or different and are independently selected from the group of the following substituents: Hydrogen;
• R 5 denotes:
• phenyl group can be fused via two adjacent ring atoms with optionally substituted (C 5 -d) cycloalkyl, or
• R 5 for optionally substituted 5- to 6-membered heteroaryl having up to 3 heteroatoms from the series N, O and / or S, which is selected from the group consisting of furanyl, pyrrolyl, thienyl, thiazolyl, oxazolyl,
• heterocycle and the heteroaryl ring can in each case be fused via two adjacent ring atoms with optionally substituted phenyl or optionally substituted (C 5 -C 6 ) cycloalkyl,
• R 6 and R 7 are the same or different and are for Hydrogen; optionally substituted (-CC 4 ) alkyl; optionally substituted phenyl; or for optionally substituted 5- to 6-membered heteroaryl with up to 3 heteroatoms from the series N, O and / or S, which is selected from the group of furanyl, pyrrolyl, thienyl, thiazolyl, oxazolyl, imidazolyl, triazolyl, pyridyl, Pyrimidyl and pyridazinyl
• R 8 NR 6 R 7 with R 6 and R 7 as previously defined; optionally substituted (-CC) alkyl; (dC 4 ) alkoxy; optionally substituted phenyl; phenyloxy; or denotes -O- (CH 2 ) n -phenyl with n - 1,
• R 4 represents straight-chain or branched (-CC 4 ) -alkyl or (C 2 -C 4 ) -alkenyl, which are optionally substituted one or more times with hydroxy; Fluorine, chlorine;
• phenyl or can be substituted with (CC 4 ) - alkoxy and which can optionally be fused via two adjacent ring atoms with optionally substituted phenyl or optionally substituted (C 5 -C 6 ) cycloalkyl,
• R 1 , R 2 , R 3 are the same or different and are independently selected from the group of the following substituents:
• R 4 represents straight-chain or branched (-CC 4 ) alkyl, which is optionally substituted one or more times with hydroxy;
• Phenyl which can be substituted by nitro, cyano, fluorine, methoxy, difluoromethoxy, methoxycarbonyl or p-tolylsulfonylmethyl;
• Oxadiazolyl which may be substituted by phenyl or methoxyphenyl; or a residue of the formula
• R 4 represents allyl or 3, 3-dimethylallyl
• R 1 , R 2 , R 3 are the same or different and are independently selected from the group of the following substituents:
• Radicals of the formulas -O-CH 2 -CH 2 -OH, -O-CH 2 -COOH or -O-CH 2 -CH CH 2 ; Fluorine or chlorine; nitro;
• R 4 stands for straight-chain or branched (CC 4 ) alkyl, which is optionally substituted one or more times with
• R 4 represents allyl
• the present invention also relates to a process for the preparation of the compounds of the general formula (I).
• the compounds of the general formula (I) are prepared by:
• X represents a nucleofugic group (preferably halogen, in particular chlorine, bromine or iodine, or mesylate, tosylate, triflate or 1-imidazolyl),
• R 6 where R and R are as previously defined,
• the compounds of the general formula (I) can also alternatively be prepared by first reacting the compounds of the general formula (II) with 2-bromoethylamine to give the compounds of the general formula (IV)
• R y has the meaning -C (O) -R 8 , -C (O) -OR 8 , -C (O) -NR .6 ° rR> 7 ', -SO 2 -R 8 with R ⁇ as previously defined
• Y represents a nucleofugic group, preferably halogen, in particular chlorine, bromine or iodine, or mesylate, tosylate, triflate or 1-imidazolyl,
• R, 9 y has the meaning R b
• the nucleofugic group X sometimes also referred to as a leaving or leaving group, can be added to the reaction separately or else according to the usual methods
• Methods are generated in situ, e.g. about the so-called Mitsunobu reaction.
• Suitable solvents for the process according to the invention are all organic solvents which are inert under the reaction conditions. These include alcohols such as methanol, ethanol and isopropanol, ketones such as acetone and methyl ethyl ketone, acyclic and cyclic ethers such as diethyl ether and tetrahydrofuran, esters such as ethyl acetate or butyl acetate, hydrocarbons such as benzene, xylene, toluene, hexane or cyclohexane, dimethylformamide, acetonitrile, pyridine, dimethylsulfoxide (DMSO), chlorinated hydrocarbons such as dichloromethane or dichloromethane, chlorobenzene dichloromethane, chlorobenzene dichloromethane, chlorobenzene dichloromethane, chlorobenzenemethane, chlorobenzene. Water is also suitable as a solvent. Dimethyl
• bases are suitable as bases.
• bases preferably include alkali metal hydroxides such as sodium or potassium hydroxide or alkali metal carbonates such as sodium or potassium carbonate or sodium or potassium hydrogen carbonate or sodium or potassium methoxide or sodium or potassium ethanolate or potassium tert-butoxide or amides such as sodium amide, lithium bis (trimethylsilyl) amide or Lithium diisopropylamide or organometallic compounds such as butyllithium or phenyllithium or amines such as
• Triethylamine and pyridine Triethylamine and pyridine.
• the alkali carbonates and bicarbonates are preferred.
• the base can be present in an amount of 1 to 10 mol, preferably 1 to 5 mol, in particular 1 to 4 mol, based on 1 mol of the compounds of the general
• the reaction generally takes place in a temperature range from -78 ° C. to the reflux temperature, preferably in the range from -78 ° C. to + 40 ° C., in particular at room temperature.
• the reaction can be carried out at normal, elevated or reduced pressure (for example in the range from 0.5 to 5 bar). Generally one works at normal pressure. Numerous modifications to the aforementioned conditions are known to the person skilled in the art, which lie within the average technical skill and do not depart from the scope of the present invention.
• the compounds of the general formula (II) can also be prepared from compounds of the general formula (VI) by reaction with an alkali metal sulfide. This production method can be explained using the following formula scheme:
• the alkali sulfide used is preferably sodium sulfide in an amount of 1 to 10 mol, preferably 1 to 5 mol, in particular 1 to 4 mol, based on 1 mol of the compounds of the general formula (VI).
• All organic solvents which are inert under the reaction conditions are suitable as solvents. These include N, N-dimethylformamide, N-methylpyrrolidinone, hexamethylphosphoric triamide, pyridine and acetonitrile. N, N-Dimethylformamide is particularly preferred. It is also possible to use mixtures of the solvents mentioned above.
• the reaction generally takes place in a temperature range from + 20 ° C. to the reflux temperature, preferably in the range from + 20 ° C. to + 120 ° C., in particular at + 60 ° C. to + 100 ° C.
• the reaction can be carried out at normal, elevated or reduced pressure (e.g. in the range from 0.5 to 5 bar). Generally one works at normal pressure.
• the compounds of the general formula (I) have an unforeseeable, valuable pharmacological activity spectrum and are therefore particularly suitable for the prophylaxis and / or treatment of diseases. It has now been found, unexpectedly, that the substances of the formula (I) above are suitable for the prophylaxis and / or treatment of a whole series of diseases, for example in particular diseases of the cardiovascular system (cardiovascular diseases); Diseases of the genitourinary system; Respiratory diseases; inflammatory and neuroinflammatory diseases; Diabetes, especially diabetes mellitus; Cancer; and finally also neurodegenerative diseases, such as Parkinson's disease, as well as painful conditions.
• cardiovascular diseases for example, to understand in particular the following diseases: coronary heart disease; Hypertension (high blood pressure); Restenosis such as Restenosis after balloon dilation of peripheral blood vessels; Arteriosclerosis; tachycardia; arrhythmias; peripheral and cardiac vascular diseases; stable and unstable angina pectoris; and atrial fibrillation.
• the compounds of the general formula (I) are also suitable for reducing the myocardial area affected by an infarction.
• the compounds of the general formula (I) are also suitable for the treatment and prophylaxis of thromboembolic disorders and ischemia such as myocardial infarction, stroke, transient ischemic attacks.
• Another area of indication for which the compounds of the general formula (I) are suitable are the prophylaxis and / or therapy of diseases of the
• Urogenital area such as irritable bladder, erectile dysfunction and female sexual dysfunction, but also the prophylaxis and / or treatment of inflammatory diseases, such as asthma and inflammatory dermatoses, of neuroinflammatory diseases of the central nervous system, such as conditions after a cerebral infarction, Alzheimer's disease, also neurodegenerative diseases such as Parkinson's disease and pain.
• inflammatory diseases such as asthma and inflammatory dermatoses
• neuroinflammatory diseases of the central nervous system such as conditions after a cerebral infarction, Alzheimer's disease, also neurodegenerative diseases such as Parkinson's disease and pain.
• Another area of indication is diseases of the respiratory tract such as asthma, chronic bronchitis, pulmonary emphysema, bronchiectasis, cystic fibrosis (cystic fibrosis) and pulmonary hypertension.
• the compounds of the general formula (I) can also be used for the prophylaxis and / or therapy of liver fibrosis and cirrhosis.
• the compounds of the general formula (I) can also be used for the prophylaxis and / or therapy of diabetes, in particular diabetes mellitus.
• the present invention thus also relates to the use of the substances of the general formula (I) for the production of medicaments and pharmaceutical compositions for the prophylaxis and / or treatment of the aforementioned
• the present invention further relates to a method for the prophylaxis and / or treatment of the aforementioned clinical pictures with the substances of the general formula (I).
• the pharmaceutical activity of the aforementioned compounds of the general formula (I) can be determined by their action as selective ligands on one or more subtypes of the adenosine receptors, in particular as selective ligands on adenosine Al, adenosine A2a and / or adenosine Explain A2b receptors, preferably as selective ligands on adenosine Al and / or adenosine A2b receptors.
• selective means those adenosine receptor ligands in which, on the one hand, a clear effect on one or more adenosine receptor subtypes and, on the other hand, none or one significantly weaker activity can be observed on one or more other adenosine receptor subtypes, reference being made to the test methods described in section A. II.
• compounds of the general formula (I) in which R 4 is (-C 1 -C 4 ) -alkyl which is substituted by a group of the formula -C (O) NR 6 R 7 , where R 6 and R 7 are identical or are different and are hydrogen or optionally substituted (-C 3 ) alkyl, generally selectively on adenosine A2b receptors.
• compounds of the general formula (I) in which R represents (C 1 -C 4 ) -alkyl which is substituted by one or more hydroxyl groups generally act selectively on adenosine-Al receptors.
• This receptor selectivity can be determined by the biochemical measurement of the intracellular messenger cAMP in cells which specifically express only a subtype of the adenosine receptors.
• agonists an increase in the intracellular cAMP content is observed, in the case of antagonists a decrease in the intracellular cAMP content after pre-stimulation with adenosine or adenosine-like substances (see B. Kuli, G. Arslan, C. Nilsson, C Owman, A. Lorenzen, U. Schwabe, BB Fredholm, "Differences in the order of potency for agonists but not antagonists at human and rat adenosine A2A receptors", Biochem.
• the present invention therefore also relates to the use of selective adenosine receptor ligands, in particular of selective adenosine Al,
• Adenosine A2a and / or adenosine A2b receptor ligands for the manufacture of medicaments and pharmaceutical compositions for the prophylaxis and / or treatment of diseases, e.g. in particular diseases of the cardiovascular system (cardiovascular diseases); Diseases of the genitourinary system; inflammatory and neuroinflammatory diseases; neurodegenerative diseases; Respiratory diseases; Liver fibrosis, cirrhosis; Cancer; and finally diabetes, in particular diabetes mellitus, reference being made to the above explanations regarding the individual indication areas.
• compounds of the general formula (I) which bind selectively to adenosine-A1 receptors are preferred, preferably for myocardial protection and for the prophylaxis and / or treatment of tachycardias, atrial arrhythmias, heart failure, acute kidney failure, diabetes and pain.
• Compounds of the general formula (I) which bind selectively to adenosine A2a receptors are, on the other hand, preferably suitable for the prophylaxis and / or treatment of thrombo-embolic diseases, of neurodegenerative diseases such as Parkinson's disease and for wound healing.
• Compounds of the general formula (I) which bind selectively to adenosine A2b receptors are in turn preferably suitable for the prophylaxis and / or therapy of liver fibrosis, heart attack, neuroinflammatory diseases, Alzheimer's disease, urogenital incontinence and respiratory diseases such as for example asthma and chronic bronchitis.
• the present invention therefore furthermore relates to pharmaceuticals and pharmaceutical compositions which comprise at least one selective adenosine and / or adenosine A2b receptor ligands, preferably at least one compound of the general formula (I), together with one or more pharmacologically acceptable auxiliaries or excipients, and their use for the aforementioned purposes.
• all customary application forms come into consideration, i.e. i.e. oral, parenteral, inhalative, nasal, sublingual, rectal or external, e.g. transdermally, particularly preferably orally or parenterally.
• parenteral administration intravenous, intramuscular, subcutaneous administration should be mentioned in particular, e.g. as a subcutaneous depot.
• Oral application is very particularly preferred.
• compositions can be administered alone or in the form of preparations.
• suitable preparations include Tablets, capsules, pellets, dragees, pills, granules, solid and liquid aerosols, syrups,
• the active ingredient must be present in such an amount that a therapeutic effect is achieved.
• the active ingredient can be present in a concentration of 0.1 to 100% by weight, in particular 0.5 to 90% by weight, preferably 5 to 80% by weight.
• the concentration of the active ingredient should be 0.5-90% by weight, i.e. the active substance should be present in amounts sufficient to achieve the dosage range indicated.
• the active ingredients can be converted into the customary preparations in a manner known per se. This is done using inert, non-toxic, pharmaceutically suitable carriers, auxiliaries, solvents, vehicles, emulsifiers and / or dispersants.
• auxiliary substances are: water, non-toxic organic solvents such as e.g. Paraffins, vegetable oils (e.g. sesame oil), alcohols (e.g.
• Ethanol, glycerin Ethanol, glycerin
• glycols e.g. polyethylene glycol
• solid carriers such as natural Liche or synthetic rock powder (e.g. talc or silicates)
• sugar e.g. milk sugar
• emulsifiers e.g. polyvinylpyrrolidone
• lubricants e.g. magnesium sulfate
• tablets can of course also contain additives such as sodium citrate together with additives such as starch, gelatin and the like.
• additives such as sodium citrate together with additives such as starch, gelatin and the like.
• Aqueous preparations for oral administration can also be mixed with flavor enhancers or colorants.
• the amount is approximately 0.1 to approximately 10 mg / kg, preferably approximately 0.5 to approximately 5 mg / kg, in particular approximately 1 to approximately 4 mg / kg of body weight.
• anesthetized rats have their hearts quickly removed and inserted into a conventional Langendorff apparatus.
• the coronary arteries are perfused at a constant volume (10 ml / min) and the resulting perfusion pressure is registered via a corresponding pressure transducer.
• a decrease in the perfusion pressure in this arrangement corresponds to a relaxation of the coronary arteries.
• the pressure that is developed by the heart during each contraction is measured via a balloon inserted into the left ventricle and another pressure transducer.
• the frequency of the isolated beating heart is calculated from the number of contractions per unit of time.
• Cells of the CHO (Chinese Hamster Ovary) permanent line were stably transfected with the cDNA for the adenosine receptor subtypes AI, A2a, A2b and A3.
• Binding of the substances to the A2a or A2b receptor subtypes was determined by measuring the intracellular cAMP content in these cells using a conventional radioimmunological assay (cAMP-RIA, IBL GmbH, Hamburg, Germany).
• the reference compound used in these experiments was the adenosine-analogue compound NECA (5-N-ethylcarboxamido-adenosine), which does not bind selectively but with high affinity to all adenosine receptor subtypes and has an agonistic effect
• the adenosine receptors AI and A3 are coupled to a Gi protein, i.e. stimulation of these receptors leads to an inhibition of adenylate cyclase and thus to a lowering of the intracellular cAMP level.
• the adenylate cyclase is stimulated with forskolin.
• additional stimulation of the A1 / A3 receptors inhibits adenylate cyclase, so that Al / A3 receptor agonists can be detected via a comparatively low level of cAMP in the cell.
• the recombinant cells transfected with the corresponding receptor were used
• NECA pre-stimulated and the effect of the substances on a reduction of the intra- cellular cAMP content was investigated by this pre-stimulation.
• XAC xanthine amine congener
• the intracellular cAMP content in CHO cells that were transfected with the cDNA for the AI receptor was determined.
• the percentage cAMP concentration in all cells of a well of a microtiter plate is given based on the control value without exposure to the substance, but after pre-stimulation with 1 ⁇ M forskolin for 15 min (the cAMP content without forskolin pre-stimulation is 18% in these measurements):
• the compound from Example A 1 thus has a clear agonistic effect on cells which express the adenosine receptor A2b and has almost no effect
• the compounds from Examples A 43 and A 104 have a pronounced agonistic effect on cells with the AI receptor, almost no effect on cells with A2a receptors and a significantly weaker effect on cells with the A2b receptor and thus provide selective adenosine Al receptor agonists.
• the compound from Example A 379 on the other hand shows one significant agonistic effect on cells with the A2b receptor, almost no effect on cells with A2a receptors and a comparatively weaker effect on cells with the AI receptor and is therefore a selective adenosine A2b receptor agonist.
• the crystals are dissolved in 1 ml of CH 2 Cl 2 / CH 3 OH 1: 1 mixture and a few drops of concentrated ammonia are added (removal of diacylated by-product). The mixture is stirred at RT for 5 hours. When the reaction solution is concentrated, the product crystallizes out. It is suctioned off and washed with methanol.
• the mixture is stirred at -20 ° C for 30 minutes, then the mixture is allowed to come to 0 ° C within 1 hour.
• the mixture is concentrated in vacuo, mixed with 4 ml of a 2 molar NH 3 solution in methanol and stirred at RT for 1 hour.
• the mixture is then concentrated, dissolved in 600 ⁇ l DMSO and purified by preparative HPLC.
• reaction solution is purified by preparative HPLC.
• reaction solution was purified by preparative HPLC.
• Examples A 1 to A 413 were either isolated as crystals or, if they did not crystallize directly from the reaction solution, purified by preparative HPLC.
• a group -NH- is always meant for structures which contain a group -N- and a group -NH 2 is always meant for structures which contain a group -N.

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