WO2007065942A2 - Bis-heterocyclic imidazolyl compounds - Google Patents
Bis-heterocyclic imidazolyl compounds Download PDFInfo
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- WO2007065942A2 WO2007065942A2 PCT/EP2006/069462 EP2006069462W WO2007065942A2 WO 2007065942 A2 WO2007065942 A2 WO 2007065942A2 EP 2006069462 W EP2006069462 W EP 2006069462W WO 2007065942 A2 WO2007065942 A2 WO 2007065942A2
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Definitions
- the invention relates to new heterocyclic compounds, to processes for preparing the compounds, to pharmaceutical products comprising them, and to their use as active pharmaceutical ingredients, particularly as aldosterone synthase inhibitors.
- the present invention first provides compounds of the general formula
- R a) is deuterium, halogen, tri-CrC 4 -alkylsilyl, trifluoromethoxy, trifluoromethyl or hydrogen; or
- b) is d-C ⁇ -alkoxy or CrC 8 -alkyl
- R 1 is aryl-Co-C 4 -alkyl or unsaturated heterocyclyl-Co-C 4 -alkyl, which radicals are substituted by 1-4 Ci-C 8 -alkoxy, CrC 8 -alkoxycarbonyl, CrC 8 -alkyl, C 0 -C 8 -alkylcarbonyl, Ci-C 8 -alkyl- sulphanyl, Ci-C 8 -alkylsulphonyl, unsubstituted or substituted aryl, aryl-Co-C 4 -alkoxycarbonyl, cyano, halogen, unsubstituted or substituted heterocyclyl, hydroxyl, nitro, oxide, oxo, tri- Ci-C 4 -alkylsilyl, trifluoromethoxy or trifluoromethyl;
- R 2 a is deuterium, halogen, hydroxyl or hydrogen
- b) is C 2 -C 8 -alkenyl, C 2 -C 8 -alkynyl, Ci-C 8 -alkoxy, Ci-C 4 -alkoxycarbonyl-Ci-C 4 -alkyl, Ci-C 8 -alkyl, C 0 -C 4 -alkylcarbonyl, aryl-C 0 -C 4 -alkyl, carboxy-CrC 4 -alkyl, C 3 -C 8 -cycloalkyl or unsaturated heterocyclyl-Co ⁇ -alkyl, which radicals are unsubstituted or substituted by 1-4 Ci-C 8 -alkoxy, Ci-C 8 -alkoxycarbonyl, Ci-C 8 -alkyl, C 0 -C 8 -alkylcarbonyl, CrC 8 -alkylsulphonyl, unsubstituted or substituted aryl, aryl-C 0 -C 4
- R 3 a) is deuterium, halogen, hydroxyl, trifluoromethoxy, trifluoromethyl or hydrogen; or
- R 4 a) is deuterium, halogen, trifluoromethoxy, trifluoromethyl or hydrogen; or
- n is a number 0, 1 or 2;
- R 1 is not carbazolyl, fluorenyl or naphthyl
- R 1 is not CrC 8 -alkoxy- or halobenzothiophen-2-yl, unalkylated or N-mono- or N,N-di-Ci_8-alkylated carbamoylnaphthyl, unsubstituted or substituted biphenyl or 4-bromophenyl.
- the present invention further provides compounds of the general formula (I), in which
- R 1 is phenyl or pyridyl if R, R 2 , R 3 and R 4 are hydrogen and n is 0, whereby phenyl or pyridyl is substituted by 1-4 CrC 8 -alkoxy, CrC 8 -alkoxycarbonyl, Ci.C 8 -alkyl, C 0 -C 8 - alkylcarbonyl, CrC 8 -alkylsulphonyl, unsubstituted or substituted aryl, aryl-C o -C 4 - alkoxycarbonyl, cyano, halogen, unsubstituted or substituted heterocyclyl, hydroxyl, tri-CrC 4 -alkylsilyl, trifluoromethoxy or trifluoromethyl, at least one substituent being located in the "para" position (relative to the 6,7-dihydro-5H-pyrrolo[1 ,2-c]imidazol-7-yl ring system);
- R 1 is phenyl or unsaturated heterocyclyl if R, R 2 , R 3 and R 4 are hydrogen and n is 1 , whereby phenyl or unsaturated heterocyclyl is substituted by 3-4 Ci-C 8 -alkoxy, CrC 8 - alkoxycarbonyl, Ci-C 8 -alkyl, C o -C 8 -alkylcarbonyl, CrC 8 -alkylsulphonyl, unsubstituted or substituted aryl, aryl-C o -C 4 -alkoxycarbonyl, cyano, halogen, unsubstituted or substituted heterocyclyl, tri-CrC 4 -alkylsilyl, trifluoromethoxy or trifluoromethyl; or
- R 1 is aryl or unsaturated heterocyclyl, which radicals are substituted by 1-4 Ci-C 8 -alkoxy,
- Ci-C 8 -alkoxycarbonyl Ci-C 8 -alkyl, C o -C 8 -alkylcarbonyl, CrC 8 -alkylsulphanyl, CrC 8 - alkylsulphonyl, unsubstituted or substituted aryl, aryl-C o -C 4 -alkoxycarbonyl, cyano, halogen, unsubstituted or substituted heterocyclyl, hydroxyl, nitro, oxide, oxo, tri-d- C 4 -alkylsilyl, trifluoromethoxy or trifluoromethyl, at least one substituent being CrC 8 - alkylsulphanyl, hydroxyl, nitro or oxide; or
- R 1 is aryl or unsaturated heterocyclyl if R 3 and R 4 are both not simultaneously deuterium or hydrogen, whereby aryl or unsaturated heterocyclyl is substituted by 1-4 CrC 8 - alkoxy, CrC 8 -alkoxycarbonyl, CrC 8 -alkyl, C o -C 8 -alkylcarbonyl, CrC 8 -alkylsulphonyl, unsubstituted or substituted aryl, aryl-C o -C 4 -alkoxycarbonyl, cyano, halogen, unsubstituted or substituted heterocyclyl, oxo, tri-CrC 4 -alkylsilyl, trifluoromethoxy or trifluoromethyl; or
- R 1 is aryl or unsaturated heterocyclyl if R 2 is hydroxyl or Ci-C 8 -alkoxy, whereby aryl or unsaturated heterocyclyl is substituted by 1-4 CrC 8 -alkoxy, CrC 8 -alkoxycarbonyl, d- C 8 -alkyl, Co-C ⁇ -alkylcarbonyl, CrC 8 -alkylsulphonyl, unsubstituted or substituted aryl, aryl-C 0 -C 4 -alkoxycarbonyl, cyano, halogen, unsubstituted or substituted heterocyclyl, oxo, tri-Ci-C 4 -alkylsilyl, trifluoromethoxy or trifluoromethyl;
- R a) is deuterium, halogen, tri-Ci-C 4 -alkylsilyl, trifluoromethoxy, trifluoromethyl or hydrogen; or
- b) is d-C ⁇ -alkoxy or CrC 8 -alkyl
- R 2 a is deuterium, halogen, hydroxyl or hydrogen
- b) is C 2 -C 8 -alkenyl, C 2 -C 8 -alkynyl, CrC 8 -alkoxy,
- R 3 a) is deuterium, halogen, hydroxyl, trifluoromethoxy, trifluoromethyl or hydrogen; or
- R 4 a) is deuterium, halogen, trifluoromethoxy, trifluoromethyl or hydrogen; or
- n is a number 0, 1 or 2;
- R 1 is not carbazolyl, fluorenyl or naphthyl
- R 1 is not Ci-C 8 -alkoxy- or halobenzothiophen-2-yl, unsubstituted or substituted biphenyl or 4-bromophenyl.
- aryl stands for an aromatic hydrocarbon which contains generally 5-14, preferably 6-10, carbon atoms and is for example phenyl, or naphthyl, e.g. 1- or 2-naphthyl. Preference is given to aryl having 6-10 carbon atoms, particularly phenyl. Preferred is aryl which conforms to the H ⁇ ckel rule.
- the stated radicals may be unsubstituted or substituted one or more times, such as once or twice, in which case the substituent may be in any position, such as in the o, m or p position of the phenyl radical or in the 3 or 4 position of the 1 - or 2-naphthyl radical, and there may also be two or more identical or different substituents.
- substituents on aryl radicals or on the preferred phenyl or naphthyl radicals are as follows: CrC 8 -alkoxy, Ci-C 8 -alkoxycarbonyl, Ci-C 8 -alkyl, C 0 -C 8 -alkylcarbonyl, CrC 8 -alkylsulphonyl, unsubstituted or - A - substituted aryl, aryl-c 0 -c 4 -alkoxycarbonyl, cyano, halogen, unsubstituted or substituted heterocyclyl, hydroxyl, nitro, tri-CrC 4 -alkylsilyl, trifluoromethoxy or trifluoromethyl.
- Aryl-Co-C 4 -alkyl is for example phenyl, naphthyl or benzyl.
- the heterocyclyl term stands for a saturated, partially saturated or unsaturated, 4-8- membered, more preferably 5-membered, monocyclic ring system, for a saturated, partially saturated or unsaturated, 7-12-membered, more preferably 9-10-membered, bicyclic ring system and also for a partially saturated or unsaturated, 7-12-membered tricyclic ring system which contains an N, O or S atom in at least one of the rings, it being possible for an additional N, O or S atom to be present in one ring.
- the stated radicals may be unsubstituted or may be substituted one or more times, such as once or twice, and there may also be two or more identical or different substituents.
- substituents on heterocyclyl radicals are as follows: CrC 8 -alkoxy, CrC 8 -alkoxycarbonyl, CrC 8 -alkyl, C 0 -C 8 -alkylcarbonyl, CrC 8 - alkylsulphonyl, unsubstituted or substituted aryl, aryl-Co-C 4 -alkoxycarbonyl, cyano, halogen, unsubstituted or substituted heterocyclyl, hydroxyl, nitro, oxide, oxo, tri-CrC 4 -alkylsilyl, trifluoromethoxy or trifluoromethyl.
- Saturated heterocyclyl-Co-C 4 -alkyl is for example azepanyl, azetidinyl, aziridinyl,
- Partially saturated bicyclic heterocyclyl-C 0 -C 4 -alkyl is for example 3,4-dihydro-2H-benzo- [1 ,4]oxazinyl, 4,5,6,7-tetrahydrobenzofuranyl or 4,5,6,7-tetrahydrobenzothiazolyl.
- Unsaturated bicyclic heterocyclyl-Co-C 4 -alkyl is for example benzofuranyl, benzoimidazolyl, benzo[d]isothiazolyl, benzo[d]isoxazolyl, benzothiophenyl, quinolinyl, imidazo[1 ,5-a]pyridinyl, indazolyl, indolyl or isoquinolinyl.
- Unsaturated monocyclic heterocyclyl-C 0 -C 4 -alkyl is for example imidazolyl, oxazolyl, pyridyl, pyrrolyl, tetrazolyl, thiazolyl or thiophenyl.
- C 2 -C ⁇ -Alkenyl is for example ethenyl, propenyl, isopropenyl, butenyl, isobutenyl, secondary- butenyl, tertiary-butenyl, or a pentenyl, hexenyl or heptenyl group.
- C 2 -C 8 -Alkynyl is for example ethynyl, propynyl, butynyl, or a pentynyl, hexynyl or heptynyl group.
- d-C ⁇ -Alkoxy is for example CrC 5 -alkoxy, such as methoxy, ethoxy, propyloxy,
- Ci-C 8 -Alkoxycarbonyl is preferably CrC 4 -alkoxycarbonyl, such as methoxycarbonyl, ethoxy- carbonyl, propyloxycarbonyl, isopropyloxycarbonyl, butyloxycarbonyl, isobutyloxycarbonyl, secondary-butyloxycarbonyl or tertiary-butyloxycarbonyl.
- Ci-C 4 -Alkoxycarbonyl-Ci-C 4 -alkyl is for example methoxycarbonyl- or ethoxycarbonyl-methyl, 2-methoxycarbonyl- or 2-ethoxycarbonyl-ethyl, 3-methoxycarbonyl- or 3-ethoxycarbonyl- propyl or 4-ethoxycarbonylbutyl.
- Ci-C 8 -Alkyl can be linear or branched and/or bridged and is for example methyl, ethyl, propyl, isopropyl, butyl, isobutyl, secondary-butyl, tertiary-butyl, or a pentyl, hexyl or heptyl group.
- Co-C ⁇ -Alkylcarbonyl is for example formyl, acetyl, propionyl, propylcarbonyl, isopropyl- carbonyl, butylcarbonyl, isobutylcarbonyl, secondary-butylcarbonyl or tertiary-butylcarbonyl.
- Carboxy-CrC 4 -alkyl is for example carboxymethyl, 2-carboxyethyl, 2- or 3-carboxypropyl, 2-carboxy-2-methylpropyl, 2-carboxy-2-ethylbutyl or 4-carboxybutyl, especially
- C3-C8-Cycloalkyl is preferably 3-, 5- or 6-membered cycloalkyl, such as cyclopropyl, cyclopentyl, cyclohexyl.
- Halogen is for example fluorine, chlorine, bromine or iodine.
- the groups of compounds specified below should not be considered as being closed; on the contrary, parts of these groups of compounds may be replaced by one another or by the definitions given above, or may be omitted, in a meaningful way, such as in order to replace general definitions by more specific definitions.
- the stated definitions apply within the bounds of the general chemical principles, such as of the customary valencies for atoms, for example.
- a preferred group for compounds of the formula (I) are compounds in which
- R 1 is phenyl or pyridyl if R, R 2 , R 3 and R 4 are hydrogen and n is 0, whereby phenyl or pyridyl is substituted by 1-4 CrC 8 -alkoxy, CrC 8 -alkoxycarbonyl, Ci.C 8 -alkyl, C 0 -C 8 - alkylcarbonyl, CrC 8 -alkylsulphanyl, CrC 8 -alkylsulphonyl, unsubstituted or substituted aryl, aryl-C o -C 4 -alkoxycarbonyl, cyano, halogen, unsubstituted or substituted heterocyclyl, hydroxyl, nitro, oxide, tri-CrC 4 -alkylsilyl, trifluoromethoxy or trifluoro- methyl, at least one substituent being located in the "para" position (relative to the 6,7-dihydro-5H-pyrrol
- a further, preferred group of compounds of the formula (I) are compounds in which
- R 1 is phenyl or unsaturated heterocyclyl if R, R 2 , R 3 and R 4 are hydrogen and n is 1 , whereby phenyl or unsaturated heterocyclyl is substituted by 3-4 Ci-C 8 -alkoxy, CrC 8 - alkoxycarbonyl, Ci-C 8 -alkyl, C o -C 8 -alkylcarbonyl, CrC 8 -alkylsulphanyl, Ci-C 8 -alkyl- sulphonyl, unsubstituted or substituted aryl, aryl-C o -C 4 -alkoxycarbonyl, cyano, halogen, unsubstituted or substituted heterocyclyl, hydroxyl, nitro, tri-CrC 4 -alkylsilyl, trifluoromethoxy or trifluoromethyl.
- a further, preferred group of compounds of the formula (I) are compounds in which
- R 1 is aryl or unsaturated heterocyclyl, which radicals are substituted by 1-4 Ci-C 8 -alkoxy,
- Ci-C 8 -alkoxycarbonyl Ci-C 8 -alkyl, C o -C 8 -alkylcarbonyl, CrC 8 -alkylsulphanyl, CrC 8 - alkylsulphonyl, unsubstituted or substituted aryl, aryl-C o -C 4 -alkoxycarbonyl, cyano, halogen, unsubstituted or substituted heterocyclyl, hydroxyl, nitro, oxide, oxo, tri-d- C 4 -alkylsilyl, trifluoromethoxy or trifluoromethyl, at least one substituent being CrC 8 - alkylsulphanyl, hydroxyl, nitro or oxide.
- a further, preferred group of compounds of the formula (I) are compounds in which (D) R 1 is aryl or unsaturated heterocyclyl if R 3 and R 4 are both not simultaneously deuterium or hydrogen, whereby aryl or unsaturated heterocyclyl is substituted by 1-4 CrC 8 - alkoxy, Ci-C 8 -alkoxycarbonyl, CrC 8 -alkyl, C 0 -C 8 -alkylcarbonyl, CrC 8 -alkylsulphanyl, Ci-C 8 -alkylsulphonyl, unsubstituted or substituted aryl, aryl-Co-C 4 -alkoxycarbonyl, cyano, halogen, unsubstituted or substituted heterocyclyl, hydroxyl, nitro, oxide, oxo, tri-Ci-C 4 -alkylsilyl, trifluoromethoxy or trifluoromethyl.
- a further, preferred group of compounds of the formula (I) are compounds in which
- R 1 is aryl or unsaturated heterocyclyl if R 2 is hydroxyl or Ci-C 8 -alkoxy, whereby aryl or unsaturated heterocyclyl is substituted by 1-4 Ci-C 8 -alkoxy, C-i-C ⁇ -alkoxycarbonyl, d-C ⁇ -alkyl, Co-C ⁇ -alkylcarbonyl, CrC 8 -alkylsulphanyl, CrC 8 -alkylsulphonyl, unsubstituted or substituted aryl, aryl-Co-C 4 -alkoxycarbonyl, cyano, halogen, unsubstituted or substituted heterocyclyl, hydroxyl, nitro, oxide, oxo, tri-CrC 4 - alkylsilyl, trifluoromethoxy or trifluoromethyl.
- a further, preferred group of compounds of the formula (I) are compounds in which
- R 1 is pyridyl, under the conditions as specified for (A); or is phenyl, under the conditions as specified for (A) or (B); or is aryl or unsaturated heterocyclyl, substituted as specified under (C), (D) or (E), heterocyclyl being selected with particular preference from benzofuranyl, benzoimidazolyl, benzo[d]isothiazolyl, benzo[d]isoxazolyl, benzothiophenyl, imidazolyl, indazolyl, indolyl, oxazolyl, pyridyl, pyrrolyl, thiazolyl or thiophenyl;
- a further, preferred group of compounds of the formula (I) are compounds in which
- R 1 has the definition as specified for (A), (B), (C), (D) or (E), more preferably as specified for (A) 1 (B) Or (C);
- R is C-i-C ⁇ -alkyl, deuterium, tri-Ci-C 4 -alkylsilyl or hydrogen;
- R 2 a is deuterium, halogen, hydroxyl or hydrogen
- R 3 a) is deuterium, halogen, hydroxyl or hydrogen
- R 4 a) is deuterium, halogen or hydrogen; or b) is d-C ⁇ -alkoxy or CrC 8 -alkyl;
- n 0 or 1 ;
- R is preferably CrC 8 -alkyl, deuterium, tri-Ci-C 4 -alkylsilyl or hydrogen, particularly preferably deuterium or hydrogen; and their salts, preferably their pharmaceutically useful salts.
- R 2 is preferably CrCe- alkoxy, CrC 8 -alkyl, aryl-C 0 -C 4 -alkyl, deuterium, hydroxyl or hydrogen, particularly preferably d-C ⁇ -alkyl, deuterium, hydroxyl or hydrogen; and their salts, preferably their
- R 3 is preferably CrC 8 -alkyl, deuterium, halogen or hydrogen; and their salts, preferably their pharmaceutically useful salts.
- R 4 is preferably d-C ⁇ -alkyl, deuterium, halogen or hydrogen; and their salts, preferably their pharmaceutically useful salts.
- n is preferably a number 0 or 1.
- Preferred substituents for aryl or unsaturated heterocyclyl are CrC 8 -alkoxy, CrC 8 -alkyl, d-C ⁇ -alkylcarbonyl, d-C ⁇ -alkylsulphonyl, cyano, halogen, nitro, oxide, unsubstituted or substituted aryl, in particular unsubstituted or substituted phenyl, or unsubstituted or substituted heterocycyl, in particular unsubstituted or substituted tetrazolyl, unsubstituted or substituted thiazolyl or unsubstituted or substituted thiophenyl.
- Especially preferred substituents for aryl or unsaturated heterocyclyl are acetyl, chlorine, cyano, fluorine, methan- esulphonyl, nitro or oxide.
- R 1 is unsubstituted or substituted 4-acetylphenyl, unsubstituted or substituted 4-cyanophenyl, unsubstituted or substituted 4-fluorophenyl, unsubstituted or substituted 4-methanesulphonylphenyl or unsubstituted or substituted 4-nitrophenyl.
- R 1 is a mono-, di- or tri-substituted unsaturated heterocyclyl substituent, the substituents being preferably selected from the group consisting of Ci-C 8 -alkyl, Ci-C 8 -alkoxy, CrC 8 -alkoxycarbonyl, Co-C ⁇ -alkylcarbonyl, CrC 8 -alkylsulphonyl, unsubstituted or substituted aryl, aryl-Co-C 4 -alkoxycarbonyl, cyano, halogen, unsubstituted or substituted heterocyclyl, hydroxyl, nitro, oxide, oxo, tri-CrC 4 -alkylsilyl, trifluoromethoxy and
- R 1 is benzofuran-3-yl, 1 H-benzoimidazol-1-yl,
- R 1 is 1 H-benzoimidazol-1-yl, benzo[d]isothiazol-3-yl, benzo[d]isoxazol-3-yl, imidazol-1-yl or pyridin-4-yl, which radicals are substituted, and the substituents are preferably selected from the group consisting of CrC 8 -alkyl, CrC 8 -alkoxy, Ci-C 8 -alkoxycarbonyl, Co-C 8 -alkylcarbonyl, Ci-C 8 -alkylsulphonyl, unsubstituted or substituted aryl, aryl-C 0 -C 4 -alkoxycarbonyl, halogen, cyano, unsubstituted or substituted heterocyclyl, hydroxyl, nitro, oxide, oxo, tri-Ci-C 4 -alkylsilyl, trifluoromethoxy and trifluoromethyl.
- R 1 is a mono-, di- or tri-substituted phenyl radical which has at least one substituent, preferably cyano, fluoro, acetyl, methanesulphonyl, nitro or unsubstituted or substituted heterocyclyl, the heterocycle preferably containing at least one nitrogen atom, in position 4.
- R 2 is hydrogen, deuterium, halogen, hydroxyl or Ci-C 8 -alkyl and R 4 is hydrogen, deuterium or Ci-C 8 -alkyl and in which R 1 is a mono-, di- or trisubstituted phenyl radical which has at least one substituent, preferably acetyl, methanesulphonyl, nitro or unsubstituted or substituted heterocyclyl, the heterocycle preferably containing at least one nitrogen atom, in position 4.
- R 2 is deuterium, halogen, hydroxyl or Ci-C 8 -alkyl and/or R 4 is deuterium or Ci-C 8 -alkyl and in which R 1 is an unsubstituted or mono- or di-substituted 4-cyanophenyl radical or 4-fluorophenyl radical.
- R 1 is a 4-cyano-3-trifluoromethyl- phenyl, 4-cyano-3-methoxyphenyl, 4-cyano-3-trifluoromethoxyphenyl, 3-bromo-4-cyano- phenyl or 3-chloro-4-cyanophenyl, 3,5-difluoro-4-cyanophenyl, which if desired may be substituted by a further substituent on the phenyl radical, and R 2 and R 4 are hydrogen.
- R 1 is an unsubstituted or mono- or di- substituted 4-cyanophenyl radical which is substituted in position 3 by an unsubstituted or mono-, di- or trisubstituted phenyl radical
- R 2 is hydrogen, deuterium, halogen, hydroxyl or d-C ⁇ -alkoyl and R 4 is hydrogen, deuterium or d-C ⁇ -alkyl.
- Particularly preferred compounds of the formula (I) are those of the general formula (Ia)
- R, R 1 , R 2 , R 3 , R 4 and n have the definitions specified above for the compounds of the formula (I), the above preferences applying analogously.
- the compounds of the formula (I) which possess at least one asymmetric carbon atom can exist in the form of optically pure enantiomers, mixtures of enantiomers, or racemates.
- Compounds having a second asymmetric carbon atom can exist in the form of optically pure diastereomers, mixtures of diastereomers, diastereomeric racemates, mixtures of diastereomeric racemates, or meso compounds.
- the invention embraces all of these forms.
- Mixtures of enantiomers, racemates, mixtures of diastereomers, diastereomeric racemates, or mixtures of diastereomeric racemates can be fractionated by conventional methods, such as by racemate resolution, column chromatography, thin-layer chromatography, HPLC and the like.
- the compounds of the formula (Ia) have at least one asymmetric carbon atom, which is labelled " * ".
- the compounds mentioned are to be understood as a single compound having a specific configuration around the designated asymmetric carbon atom. If a synthesis method is used which leads to racemic compounds, the racemate resolution is carried out in accordance with conventional methods, such as via a chiral HPLC column. Details are described in the examples.
- Compounds of the formula (Ia) as described in the present invention exhibit a pronounced aldosterone synthase and/or 11- ⁇ -hydroxylase inhibitory activity. The aforementioned activity can, readily and as described below, be determined via cellular assays based on the NCI-H295R human adrenocortical carcinoma cell line.
- compounds of the formula (Ia) have an activity which is at least 20 times better, but preferably 40 times better, than the substances of the formula (Ia) with the opposite configuration around the asymmetric carbon atom labelled * .
- salts embraces salts with organic or inorganic acids, such as hydrochloric acid, hydrobromic acid, nitric acid, sulphuric acid, phosphoric acid, citric acid, formic acid, maleic acid, acetic acid, succinic acid, tartaric acid, methane- sulphonic acid, p-toluenesulphonic acid and the like.
- Salts of compounds containing salt- forming groups are, in particular, acid addition salts, salts with bases or else, if appropriate, if two or more salt-forming groups are present, are mixed salts or inner salts.
- the compounds of the formula (I) can be prepared analogously to preparation processes known from the literature (scheme).
- n 0, 1 or 2
- the compounds of the formula (I) can also be prepared in optically pure form. Separation into antipodes is possible by methods known per se, either, preferably, at an early stage in synthesis, by salt formation with an optically active acid such as, for example, (+)- or (-)-mandelic acid and separation of the diastereomeric salts by fractional crystallization, or, preferably, at a fairly late stage, by derivatization with a chiral auxiliary component, such as, for example, (+)- or (-)-camphanyl chloride and separation of the diastereomeric products by chromatography and/or crystallization and subsequent cleavage of the bond to the chiral auxiliary.
- the pure diastereomeric salts and derivatives can be analysed to determine the absolute configuration of the compound present, using customary spectroscopic methods, with single-crystal X-ray spectroscopy representing one particularly appropriate method.
- Salts are primarily the pharmaceutically useful or non-toxic salts of compounds of the formula (I).
- Such salts are formed for example by compounds of the formula (I) containing an acidic group, such as a carboxyl or sulpho group and are, for example, salts thereof with suitable bases, such as non-toxic metal salts derived from metals of group Ia, Ib, Ma and Hb of the Periodic Table of the Elements, such as alkali metal salts, especially lithium, sodium or potassium salts, alkaline earth metal salts, magnesium or calcium salts for example, and also zinc salts or ammonium salts, and additionally salts formed with organic amines, such as unsubstituted or hydroxyl-substituted mono-, di- or trialkylamines, especially mono-, di- or tri- lower alkylamines, or with quaternary ammonium bases, e.g.
- methyl-, ethyl-, diethyl- or triethylamine mono-, bis- or tris(2-hydroxyl-lower alkyl)amines, such as ethanolamine, diethanolamine or triethanolamine, tris(hydroxylmethyl)methylamine or 2-hydroxyl-tertiary- butylamine, N,N-di-lower alkyl-N-(hydroxyl-lower alkyl)amine, such as N,N-di-N-dimethyl-N- (2-hydroxylethyl)amine, or N-methyl-D-glucamine, or quaternary ammonium hydroxides, such as tetrabutylammonium hydroxide.
- the compounds of the formula (I) containing a basic group, such as an amino group can form acid addition salts, with suitable inorganic acids for example, such as hydrohalic acid, such as hydrochloric acid, hydrobromic acid, or sulphuric acid with replacement of one or both protons, phosphoric acid with replacement of one or more protons, orthophosphoric acid or metaphosphoric acid for example, or pyrophosphoric acid with replacement of one or more protons, or with organic carboxylic, sulphonic or phosphonic acids or N-substituted sulphamic acids, e.g.
- suitable inorganic acids for example, such as hydrohalic acid, such as hydrochloric acid, hydrobromic acid, or sulphuric acid with replacement of one or both protons, phosphoric acid with replacement of one or more protons, orthophosphoric acid or metaphosphoric acid for example, or pyrophosphoric acid with replacement of one or more protons, or with organic carboxylic, sulphonic or phosphonic acids or N
- ethanesulphonic acid 2-hydroxylethanesulphonic acid, ethane-1 ,2-disulphonic acid, benzenesulphonic acid, 4-toluenesulphonic acid, naphthalene-2-sulphonic acid, 2- or 3- phosphoglycerate, glucose 6-phosphate, N-cyclohexylsulphamic acid (to form cyclamates), or with other acidic organic compounds, such as ascorbic acid.
- Compounds of the formula (I) containing acidic and basic groups can also form inner salts.
- the compounds of the formula (I) also include those compounds in which one or more atoms have been replaced by their stable, non-radioactive isotopes: for example, a hydrogen atom by deuterium.
- Prodrug derivatives of the presently described compounds are derivatives thereof which when employed in vivo release the original compound as a result of a chemical or physiological process.
- a prodrug may be converted into the original compound, for example, when a physiological pH is reached or as a result of enzymatic conversion.
- Examples of possible prodrug derivatives include esters of freely available carboxylic acids, S- and O-acyl derivatives of thiols, alcohols or phenols, the acyl group being defined as above.
- ester derivatives which are converted by solvolysis in physiological medium into the original carboxylic acid, such as, for example, lower alkyl esters, cycloalkyl esters, lower alkenyl esters, benzyl esters, mono- or disubstituted lower alkyl esters, such as lower ⁇ -(amino, mono- or dialkylamino, carboxyl, lower alkoxycarbonyl)- alkyl esters or such as lower ⁇ -(alkanoyloxy, alkoxycarbonyl or dialkylaminocarbonyl)alkyl esters; pivaloyloxymethyl esters and similar esters are conventionally used as ester derivatives of this kind.
- a defined compound in this invention also includes its prodrug derivative and salt form, insofar as this is possible and appropriate.
- Aldosterone is a steroidal hormone which is synthesized in the zona glomerulosa cells of the adrenal cortex by the enzyme aldosterone synthase (CYP1 1 B2). Aldosterone production and secretion is regulated by the adrenocorticotropic hormone (ACTH), angiotensin II, potassium and sodium ions.
- ACTH adrenocorticotropic hormone
- the primary biological function of aldosterone is the regulation of the salt balance, with aldosterone controlling the reabsorption of sodium ions from the renal filtrate and the secretion of potassium ions into the renal filtrate.
- aldosterone secretion also called hyperaldosteronism
- hyperaldosteronism The state of excessive aldosterone secretion, also called hyperaldosteronism, can lead to high blood pressure, hypokalaemia, alkalosis, muscle weakness, polyuria, polydipsia, edemas, vasculitis, increased collagen formation, fibrosis and endothelial dysfunction.
- the chemical compounds described in this invention inhibit the cytochrome P450 enzyme aldosterone synthase (CYP11 B2) and can therefore be used to treat states induced by aldosterone.
- the compounds described can be employed for preventing, delaying the progression of or treating states such as hypokalaemia, hypertension, congestive heart failure, acute and - in particular - chronic renal failure, cardiovascular restenosis, atherosclerosis, metabolic syndrome (syndrome X), adiposity (obesity), vasculitis, primary and secondary hyperaldosteronism, nephropathy, myocardial infarction, coronary heart disease, increased collagen formation, fibrosis, vascular and coronary tissue changes (remodelling) secondary to high blood pressure, endothelial dysfunction, and oedemas secondary to cirrhosis, nephrosis and congestive heart failure.
- states such as hypokalaemia, hypertension, congestive heart failure, acute and - in particular - chronic renal
- Cortisol is a steroidal hormone which is synthesized almost exclusively in the zona fasciculata cells of the adrenal cortex by the cytochrome P450 enzyme 11- ⁇ -hydroxylase (CYP11 B1 ). Cortisol production is regulated by ACTH. The primary biological function of Cortisol is to regulate the production and the provision of carbohydrates for the brain and other metabolically active tissues. Increased Cortisol production and secretion is a normal physiological response to stress and leads to the essential mobilization of fats, proteins and carbohydrates to cover increased physical energy demand. Chronically excessive Cortisol release describes the condition of Cushing's syndrome.
- Cushing's syndrome may come about on the one hand as a result of Cortisol hypersynthesis, which may be generated by an adrenocortical tumour, or on the other hand as the consequence of excessive stimulation of the adrenal cortex by ACTH.
- the first form is referred to as primary hypercortisolism
- the second form as secondary hypercortisolism.
- An excessive and persistent Cortisol secretion may also accompany a stress response, which can lead to depression and the suppression of the immune system.
- the chemical compounds described in this invention inhibit the enzyme 1 1- ⁇ -hydroxylase (CYP11 B1 ) and may therefore, owing to the inhibition of Cortisol synthesis, be employed for preventing, delaying the progression of or treating Cushing's syndrome and also the physical and mental consequences of excessive and persistent Cortisol secretion in states of stress.
- CYP11 B1 enzyme 1 1- ⁇ -hydroxylase
- the cell line NCI-H295R was originally derived from an adrenal carcinoma and was subsequently characterized in the literature for the inducible secretion of steroidal hormones and the presence of the key enzymes necessary for steroidogenesis. These include Cyp11 A (cholesterol side-chain cleavage), Cyp1 1 B1 (steroid 1 1 ⁇ -hydroxylase), Cyp11 B2 (aldosterone synthase), Cyp17 (steroid 17 ⁇ -hydroxylase and 17,20 lyase), Cyp19 (aromatase), Cyp21 B2 (steroid 21 -hydroxylase) and 3 ⁇ -HSD (hydroxysteroid dehydrogenase).
- the cells have the physiological characteristics of zonally undifferentiated human fetal adrenal cells, with the ability to produce the steroid hormones of each of the three phenotypically distinct zones found in the adult adrenal cortex.
- the NCI-295R cells are cultured in Dulbecco's Modified Eagle'Ham F-12 medium (DME/F12) that is supplemented with Ultroser SF serum (Soprachem, Cergy-Saint-Christophe, France) as well as insulin, transferrin, selenit (I-T-S, Becton Dickinson Biosiences, Franklin Lakes, NJ, USA) and antibiotics in 75 cm 2 cell culture flasks at a temperature of 37 0 C and a 95% air / 5% CO 2 humidified atmosphere.
- DME/F12 Dulbecco's Modified Eagle'Ham F-12 medium
- Ultroser SF serum Soprachem, Cergy- Saint-Christophe, France
- I-T-S Selenit
- Becton Dickinson Biosiences Franklin Lakes, NJ, USA
- the cells are subsequently transferred to a 24-well plate and seeded in the presence of DME/F12 medium that is supplemented with 0.1 % bovine serum albumin instead of Ultroser SF serum.
- the experiment is initiated by incubating the cells for 72 hours in DME/F12 medium supplemented with 0.1 % bovine serum albumin and test compounds in the presence of cell stimulatory agents.
- the test compound is added in a concentration range of 0.2 nanomolar to 20 micromolar.
- Angiotensin-ll e.g. at 10 or 100 nanomolar concentration
- potassium ions e.g. at 16 millimolar
- forskolin e.g. at 10 micromolar
- a combination of two agents may serve as cell-stimulatory agents.
- the cellular secretion of aldosterone, Cortisol, corticosterone and estradiol/estrone into the cell culture medium can be quantitatively assessed with commercially available radioimmunoassays and specific antibodies (e.g. Diagnostics Products Corporation, Los Angeles, CA, USA) according to the manufacturer's instructions.
- the degree of secretion of a selective steroid is used as a measure of enzyme activity, respectively enzyme inhibition, in the presence or absence of a test compound.
- the dose-dependent enzyme inhibitory activity of a compound is reflected in an inhibition curve that is characterized by an IC50 value.
- the IC50 values for active test compounds are generated by simple linear regression analysis to establish inhibition curves without data weighting.
- the inhibition curve is generated by fitting a 4-parameter logistic function to the raw data of the samples using the least squares approach. The function is described as follows:
- the compounds of the present invention show in the herein described in vitro test systems inhibitory activities with IC 50 values for aldosterone synthesis inhibition ranging from 10 "4 to
- aldosterone- and corticosterone-suppressing activity of herein described compounds may be assessed with the following in vivo protocol.
- An alternative method to stimulate aldosterone secretion consists in subjecting rats to a low salt diet for 48 hours and applying the diuretic furosemide at 10 mg/kg by subcutaneous or intraperitoneal administration 16 hours, respectively 2 hours prior to the start of the experiment.
- the animals are divided into test groups of 5 animals and subjected to a first bleed 1 hour prior to the administration of test compound.
- the animals receive either vehicle or test compound dissolved in vehicle in a variable dose range from 0..02 to 20 mg/kg by oral gavage.
- the animals are bled two more times from the vena subclavia under isoflurane anesthesia 2 and 6 hours after dosing.
- the blood is collected in heparin-treated tubes.
- the plasma samples are obtained by centrifu- gation and stored at -20°C.
- An alternative method to bleed animals time-dependently consists in using animals that are chronically carotid catheterized which allows the periodical sampling of up to 0.2 ml of blood using an AccuSampler (DiLab Europe, Lund, Sweden).
- the blood sampling with the AccuSampler may occur 1 hour prior to the administration of a test compound and 2, 4, 6, 8, 12, 16 and 24 hours thereafter.
- the blood samples are anti- coagulated with heparin and centrifuged.
- the aldosterone and corticosterone concentrations of the plasma samples can be determined with a radioimmunoassay as described above for the in vitro test systems.
- the selective suppression of plasma steroid levels as for instance aldosterone in comparison to corticosterone may serve as a measure for in vivo bioavailability and pharmacodynamic enzyme inhibitory activity of the herein described compounds.
- the evaluation of the data may occur relative to the application of vehicle or quantitatively by determination of the area under the curve (AUC).
- the compounds of the present invention can be administered orally or enterally, such as, for example, intravenously, intraperitoneal ⁇ , intramuscularly, rectally, subcutaneously or else by direct injection of the active substance locally into tissues or tumours.
- patient encompasses warm-blooded species and mammals such as, for example, human, primate, bovine, dog, cat, horse, sheep, mouse, rat and pig.
- the compounds can be administered as pharmaceutical product or be incorporated into an administration device which ensures sustained release of the compound.
- the amount of substance to be administered can vary over a wide range and represent every effective dose.
- the dose of the effective substance each day can be between about 0.005 and 50 milligrams per kilogram of body weight, but is preferably between about 0.05 and 5 milligrams per kilogram of body weight each day.
- the compounds can be formulated in solid or liquid pharmaceutical forms such as, for example, as capsules, pills, tablets, coated tablets, granules, powders, solutions, suspensions or emulsions.
- the dose of a solid pharmaceutical form can be one usual hard gelatine capsule which may be filled with active ingredients and excipients such as lubricants and fillers, such as, for example, lactose, sucrose and maize starch.
- Another form of administration may be represented by tableting of the active substance of the present invention.
- the tableting can take place with conventional tableting excipients such as, for example, lactose, sucrose, maize starch, combined with binder from gum acacia, maize starch or gelatine, disintegrants such as potato starch or crosslinked polyvinylpyrrolidone (PVPP) and lubricants such as stearic acid or magnesium stearate.
- conventional tableting excipients such as, for example, lactose, sucrose, maize starch, combined with binder from gum acacia, maize starch or gelatine, disintegrants such as potato starch or crosslinked polyvinylpyrrolidone (PVPP) and lubricants such as stearic acid or magnesium stearate.
- excipients suitable for soft gelatine capsules are vegetable oils, waxes, fats, semisolid and liquid polyols etc.
- excipients suitable for producing solutions and syrups are water, polyols, sucrose, invert sugar, glucose etc.
- the compounds can be formulated in solid or liquid pharmaceutical forms such as, for example, suppositories.
- excipients suitable for suppositories are natural or hardened oils, waxes, fats, semiliquid or liquid polyols etc.
- the compounds can be formulated as injectable dosage of the active ingredient in a liquid or suspension.
- the preparations usually comprise a physiologically tolerated sterile solvent which may comprise a water-in-oil emulsion, with or without surfactant, and other pharmaceutically acceptable excipients.
- Oils which can be used for such preparations are paraffins and triglycerides of vegetable, animal or synthetic origin, such as, for example, peanut oil, soya oil and mineral oil.
- injectable solutions generally comprise liquid carriers such as, preferably, water, saline, dextrose or related sugar solutions, ethanol and glycols such as propylene glycol or polyethylene glycol.
- the substances may be administered as transdermal patch system, as depot injection or implant if the formulation makes sustained delivery of the active ingredient possible.
- the active substance can be compressed as granules or to narrow cylinders and be administered subcutaneously or intramuscularly as depot injection or implant.
- the pharmaceutical products may in addition also comprise preservatives, solubilizers, viscosity-increasing substances, stabilizers, wetting agents, emulsifiers, sweeteners, colorants, aromatizing agents, salts to change the osmotic pressure, buffers, coating agents or antioxidants. They may also comprise other therapeutically valuable substances too.
- a product or of a kit which is composed of individual components consisting of a compound described herein, in free form or as pharmaceutically useful salt, and at least one pharmaceutical form whose active ingredient has a blood pressure-lowering, an inotropic, an antidiabetic, an obesity-reducing or a lipid- lowering effect, which can be used either simultaneously or sequentially.
- the product and the kit may comprise instructions for use.
- renin inhibitors such as aliskiren
- angiotensin Il receptor blockers such as candesartan, irbesartan, olmesartan, losartan, valsartan, telmisartan etc.;
- ACE inhibitors such as quinapril, ramipril, trandolapril, lisinopril, captopril, enalapril etc.
- calcium antagonists such as nifedipine, nicardipine, verapamil, isradipine, nimodipine, amlodipine, felodipine, nisoldipine, diltiazem, fendiline, flunarizine, perhexiline, gallopamil etc.;
- diuretics such as hydrochlorothiazide, chlorothiazide, acetazolamide, amiloride, bumetanide, benzthiazide, etacrynic acid, furosemide, indacrinone, metolazone, triamterene, chlorthalidone, etc.;
- aldosterone receptor blockers such as spironolactone, eplerenone
- endothelin receptor blockers such as bosentan; phosphodiesterase inhibitors such as amrinone, sildenafil;
- vasodilators such as dihydralazine, minoxidil, pinacidil, diazoxide, nitroprusside, flosequinan etc.
- ⁇ - and ⁇ -receptor blockers such as phentolamine, phenoxybenzamine, prazosin, doxazosin, terazosin, carvedilol, atenolol, metoprolol, nadolol, propranolol, timolol, carteolol etc.;
- NEP neutral endopeptidase
- sympatholytics such as methyldopa, clonidine, guanabenz, reserpine
- cardiac glycosides such as digoxin
- ⁇ -receptor stimulators such as dobutamine
- thyroid hormone such as thyroxine
- insulins such as insulin aspart, insulin human, insulin lispro, insulin glargine and further fast-, medium- and long-acting insulin derivatives and combinations
- insulin sensitizers such as rosiglitazone, pioglitazone;
- sulphonylureas such as glimepiride, chlorpropamide, glipizide, glyburide etc.
- biguanides such as metformin
- glucosidase inhibitors such as acarbose, miglitol
- meglitinides such as repaglinide, nateglinide
- lipase inhibitors such as orlistat
- appetite suppressants such as sibutramine, phentermine
- lipid-lowering ingredients such as, for example, one or more lipid-lowering ingredients, such as, for example, one or more lipid-lowering ingredients, such as, for example, one or more lipid-lowering ingredients, such as, for example, one or more lipid-lowering ingredients, such as, for example, one or more lipid-lowering ingredients, such as, for example, one or more lipid-lowering ingredients, such as, for example, one or more lipid-lowering ingredients, such as, for example,
- HMG-CoA reductase inhibitors such as lovastatin, fluvastatin, pravastatin, atorvastatin, simvastatin, rosuvastatin etc.;
- fibrate derivatives such as fenofibrate, gemfibrozil etc.
- bile acid-binding active ingredients such as colestipol, colestyramine, colesevelam cholesterol absorption inhibitors such as ezetimibe
- nicotinic acid such as niacin
- diagnosis-therapy combinations can be used separately or in products which comprise a plurality of components.
- the starting materials are prepared as follows:
- the aqueous phase is rendered basic with saturated sodium hydrogen carbonate solution, stirred thoroughly, extracted with tert-butyl methyl ether (in order to separate unreacted ketone) and then extracted with dichloromethane (3 ⁇ ).
- the combined dichloromethane phases are dried with sodium sulphate and evaporated. From the residue the title compound is obtained by means of flash chromatography (SiO 2 60F) as a white foam.
- the starting material is prepared as follows:
- a suspension of 1.7 mmol of pulverized iodine in 10 ml of glacial acetic acid is admixed with 3 mmol of 5,7-dichloro-2-methylbenzofuran [42969-85-7] and with 0.3 mmol of sodium nitrate.
- the mixture is stirred at 85°C for 6 hours. If necessary further sodium nitrate is added after 1 hour.
- the reaction mixture is cooled to room temperature and quenched with 10% sodium hydrogen sulphite solution, and tert-butyl methyl ether is added.
- the phases are separated and the aqueous phase is extracted with tert-butyl methyl ether (3X).
- the combined organic phases are washed with brine, dried with sodium sulphate and
- the starting material is prepared as follows:
- the Grignard reagent prepared from 3.68 mmol of 1-bromo-4-(1 ,1-dimethoxyethyl)benzene
- the starting material is prepared as follows:
- 0.055 ml of sulphuric acid is added slowly dropwise at 0°C to 0.046 ml of nitric acid.
- the nitrating acid is subsequently added slowly dropwise at 0°C to 0.69 mmol of 8-phenyl- 5,6,7,8-tetrahydroimidazo[1 ,5-a]pyridine.
- the reaction mixture is subsequently stirred at 0°C for 5 minutes and then poured into ice-water.
- the aqueous phase is rendered neutral with saturated aqueous sodium hydrogen carbonate solution and extracted with dichloromethane (3 ⁇ ).
- the combined organic phases are dried over magnesium sulphate and evaporated.
- the starting material is prepared as follows:
- the starting materials are prepared as follows:
- the starting material is prepared as follows:
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BRPI0619536-9A BRPI0619536A2 (en) | 2005-12-09 | 2006-12-08 | bisheterocyclic imidazolyl compounds |
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- 2006-12-08 CN CN201010539281XA patent/CN102115473A/en active Pending
- 2006-12-08 JP JP2008543841A patent/JP5258573B2/en not_active Expired - Fee Related
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- 2006-12-08 US US12/086,193 patent/US8008334B2/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
TW200804378A (en) | 2008-01-16 |
CN102115473A (en) | 2011-07-06 |
US20090197909A1 (en) | 2009-08-06 |
CN101326184A (en) | 2008-12-17 |
WO2007065942A3 (en) | 2007-07-26 |
IL191844A0 (en) | 2008-12-29 |
BRPI0619536A2 (en) | 2011-10-04 |
US8008334B2 (en) | 2011-08-30 |
EP1957489A2 (en) | 2008-08-20 |
US20110028512A1 (en) | 2011-02-03 |
JP5258573B2 (en) | 2013-08-07 |
CN101326184B (en) | 2011-11-23 |
AR056888A1 (en) | 2007-10-31 |
US8263615B2 (en) | 2012-09-11 |
JP2009518365A (en) | 2009-05-07 |
CA2629137A1 (en) | 2007-06-14 |
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