WO2005099703A1 - Utilisation de derives d'indazolecarboxamides pour la preparation d'un medicament destine au traitement et a la prevention du paludisme - Google Patents
Utilisation de derives d'indazolecarboxamides pour la preparation d'un medicament destine au traitement et a la prevention du paludisme Download PDFInfo
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- WO2005099703A1 WO2005099703A1 PCT/FR2005/000612 FR2005000612W WO2005099703A1 WO 2005099703 A1 WO2005099703 A1 WO 2005099703A1 FR 2005000612 W FR2005000612 W FR 2005000612W WO 2005099703 A1 WO2005099703 A1 WO 2005099703A1
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- indazole
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- 0 C*NC(c1n[n]c2c1cc(*)cc2)=O Chemical compound C*NC(c1n[n]c2c1cc(*)cc2)=O 0.000 description 4
- YSLRQMSHWBDRRB-UHFFFAOYSA-N Cc(cc1)ccc1S(C[N]#C)(=O)=O Chemical compound Cc(cc1)ccc1S(C[N]#C)(=O)=O YSLRQMSHWBDRRB-UHFFFAOYSA-N 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/4353—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems
- A61K31/437—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems the heterocyclic ring system containing a five-membered ring having nitrogen as a ring hetero atom, e.g. indolizine, beta-carboline
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- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/47—Quinolines; Isoquinolines
- A61K31/472—Non-condensed isoquinolines, e.g. papaverine
- A61K31/4725—Non-condensed isoquinolines, e.g. papaverine containing further heterocyclic rings
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- A—HUMAN NECESSITIES
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- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
- A61K31/403—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil condensed with carbocyclic rings, e.g. carbazole
- A61K31/404—Indoles, e.g. pindolol
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
- A61K31/415—1,2-Diazoles
- A61K31/416—1,2-Diazoles condensed with carbocyclic ring systems, e.g. indazole
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
- A61K31/4164—1,3-Diazoles
- A61K31/4184—1,3-Diazoles condensed with carbocyclic rings, e.g. benzimidazoles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
- A61K31/4427—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems
- A61K31/4439—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems containing a five-membered ring with nitrogen as a ring hetero atom, e.g. omeprazole
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
- A61K31/4427—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems
- A61K31/444—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems containing a six-membered ring with nitrogen as a ring heteroatom, e.g. amrinone
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/47—Quinolines; Isoquinolines
- A61K31/4706—4-Aminoquinolines; 8-Aminoquinolines, e.g. chloroquine, primaquine
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
- A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
- A61K31/506—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim not condensed and containing further heterocyclic rings
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/55—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having seven-membered rings, e.g. azelastine, pentylenetetrazole
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P33/00—Antiparasitic agents
- A61P33/02—Antiprotozoals, e.g. for leishmaniasis, trichomoniasis, toxoplasmosis
- A61P33/06—Antimalarials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Definitions
- the subject of the invention is the use of derivatives of 7H-indazole-3-carboxamides, and their pharmaceutically acceptable salts, for the preparation of a medicament for the treatment and prevention of malaria.
- Malaria is a parasitic disease transmitted by anopheles mosquitoes. This disease represents a major public health problem, with 300 to 500 million people infected and 2.7 million deaths each year, mostly children. Although eradicated in many regions of the world, malaria continues to progress endemically in Africa, Southeast Asia and South America, notably due to the parasite's resistance to certain molecules used as medicines antimalarials, especially against chloroquine which has long been the most used molecule.
- Plasmodium falciparum causes the deadly forms of the disease.
- Ri represents a hydrogen or halogen atom or a group -NH 2 , -NHR 2 , -NHCOR 2 , -NO 2 , -CN, -CH 2 NH 2 or -CH 2 NHR 2 ; or Ri represents a phenyl optionally substituted by one or two substituents chosen independently of one another from the halogen atoms and the groups C "alkyl, d- 6 alkoxy, -OH, -NH 2 , -NHR 2 and -NR 2 R 3 ; or else Ri represents a heteroaromatic group optionally substituted by one or two substituents chosen independently of one another from halogen atoms and heteroaromatic groups, C ⁇ .
- Ar represents a phenyl group optionally substituted by one or two substituents chosen independently of one another from the halogen atoms and the C-
- 6 thioalkyls C- ⁇ - 6 alkoxy, -CH 2 OH, phenoxy, morpholinyl, -CH 2 -morpholinyl, -NH 2 , -NHR 2 , -NR 2 R 3 , -NHSO 2 R 2 , -CN, -SO 2 R 2 , -SO 2 NH 2 , -SO 2 NHR 2 , -COOH, -COOR 2 , -CONH 2 , -CONHNH 2 , -CONHR 2 , -CH 2 NHR 2 and
- R 2 and R 3 identical or different from each other, represent a C ⁇ e alkyl group optionally substituted by a group -CONH 2 , by a phenyl group or by a heteroaromatic group; or R 2 and R 3 , identical or different from each other, represent a phenyl group or a heteroaromatic group; and n is 0, 1, 2 or 3, for the preparation of a medicament for the treatment and prevention of malaria.
- the compounds of general formula (I) may contain one or more asymmetric carbon atoms. They can therefore exist in the form of enantiomers or diastereoisomers. These enantiomers, diastereoisomers, as well as their mixtures, including racemic mixtures, form part of the invention.
- the compounds of general formula (I) can also exist in the form of tautomers. Thus, the subject of the invention is also the compounds of the invention in all their tautomeric forms.
- the compounds of general formula (I) can exist in the form of bases or of addition salts with acids. Such addition salts form part of the invention. These salts are advantageously prepared with pharmaceutically acceptable acids, but the salts of other acids useful, for example, for the purification or isolation of the compounds of general formula (I) also form part of the invention.
- the compounds of general formula (I) can also be in the form of hydrates or solvates, namely in the form of associations or combinations with one or more molecules of water or with a solvent. Such hydrates and solvates are also part of the invention.
- t and z can take the values from 1 to 6: a carbon chain comprising from t to z carbon atoms .
- C- ⁇ - 6 represents a carbon chain comprising from 1 to 6 carbon atoms;
- - alkyl a saturated, linear or branched aliphatic group.
- a C ⁇ _ 6 alkyl group represents a carbon chain comprising from 1 to 6 carbon atoms, linear or branched, more particularly methyl, ethyl, propyl, isopropyl, butyl, isobutyl, secbutyl, tertbutyl, pentyl ...;
- - alkoxy an alkyloxy (-O-alkyl) group in which the alkyl chain is saturated, linear or branched;
- - thioalkyle a group -S-alkyl, the alkyl chain of which is saturated, linear or branched;
- halogen atom fluorine, chlorine, bromine or iodine;
- - a heteroaromatic group an aromatic group comprising between 5 and 9 carbon atoms and comprising between 1 and 4 heteroatoms, such as nitrogen, oxygen or sulfur.
- heteroaromatic groups examples include pyrrolyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, thiazolyl, isothiazolyl, 1, 3,4-thiadiazolyl, oxazolyl, isoxazolyl, oxadiazolyl, pyridinyl, pyridazinyl, piriminin 1, 3,5-triazinyle, indolyle, isoindolyle, indazolyle, benzimidazolyle, benzothiazolyle, quinolinyle, isoquinolinyle and pyrrolo [2,3-c] pyridinyle.
- R 1 t R 2 , R 3 , Ar and n are as defined above, the following compounds being excluded: - N-phenyl- 7A / -indazole-3-carboxamide; - N- ⁇ 2-chlorophenyl) -7H-indazole-3-carboxamide; - N-3-chlorophenyl) -7b -indazole-3-carboxamide; - N-4-chlorophenyl) -7H-indazole-3-carboxamide; - N-2,4-dichlorophenyl) -7H-indazole-3-carboxamide; - N-3,4-dichlorophenyl) -7H-indazole-3-carboxamide; - N-2-methylphenyl) -7b -indazole-3-carboxamide; - N-2-methoxyphenyl) -7H-indazole-3-
- R 1 f R 2 , R 3 , Ar and n are as defined above, provided that: - when Ri represents an atom hydrogen: if n is equal to 0 and Ar is phenyl, then this phenyl is necessarily substituted as defined above, the substituents methyl, methoxy, thiomethyl and chlorine atom being excluded; if n is equal to 1 and Ar is phenyl, then this phenyl is necessarily substituted as defined above, the methyl and chlorine atom substituents being excluded; if n is equal to 1 and Ar is a pyridinyl, then this pyridinyl is necessarily substituted as defined above; if n is equal to 2 and Ar is phenyl, then this phenyl is necessarily substituted as defined above, the methoxy substituent being excluded; if n is equal to 3 and Ar is a pyridinyl, then this pyridinyl is necessarily substituted
- R 1 ( R 2 , R 3 , Ar and n are as defined above, provided that:
- Ar represents a phenyl group substituted by one or two substituents chosen independently of one another from bromine or iodine atoms, C 2 .6 alkyl groups, C 2 . 6 thioalkyls, C 2 - 6 alkoxy, -CH 2 OH, phenoxy, morpholinyl, -CH 2 -morpholinyl, -NH 2 , -NHR 2 , -NR 2 R 3 , -NHSO 2 R 2 , -CN, -SO 2 R 2 , -SO 2 NH 2 , -SO 2 NHR 2 , -COOH, -COOR 2 , -CONH 2 , -CONHNH 2 , -CONHR 2 , -CH 2 NHR 2 and -CH 2 NR 2 R 3 ; or Ar represents a heteroaromatic group chosen from a pyrrolyl, imidazolyl, pyrazolyl, triazo
- Ri represents a halogen atom, a group -NH 2 , -NHR 2 , -NHCOR 2 , -NO 2 , -CN, -CH2NH2 or -CH 2 NHR 2 ; or when R 1 represents a phenyl optionally substituted by one or two substituents chosen independently of one another from the halogen atoms and the groups C 1 -6 alkyl, C ⁇ - 6 alkoxy, -OH, -NH 2 , -NHR 2 , -NR 2 R 3 ; or when Ri represents a heteroaromatic group optionally substituted by one or two substituents chosen independently of one another from halogen atoms and heteroaromatic groups, C ⁇ - 6 alkyls, -OH, -NH 2 , -NHR 2 , -NHCOR 2 , -COOR 2 , -CONH 2 , -CONHR 2 and -CH 2 XR 2 , where X is selected from O,
- Ar represents a phenyl substituted by one or two substituents chosen independently of one another from a bromine atom or a group -CH 2 OH, phenoxy, -NH 2 , - NHR 2 , -NR 2 R 3 , -CN, -SO 2 NH 2 , -COOH, -COOR 2 , -CONH 2 ; or Ar represents a heteroaromatic group chosen from an imidazolyl, 1, 3,4-thiadiazolyl, pyrazinyl, indolyl, indazolyl, quinolinyl or isoquinolinyl, said heteroaromatic group being optionally substituted with one or two substituents; or Ar represents a pyridinyl substituted with one or two substituents; the substituents being chosen from halogen atoms (more particularly chlorine) and the groups -COOH, C ⁇ - 6 alkyls (more particularly methyl) and C t
- Ar represents a heteroaromatic group (more particularly a pyridinyl) optionally substituted by a C ⁇ - 6 alkoxy group, preferably a methoxy;
- R 2 and R 3 identical or different from each other, represent a C ⁇ _ 6 alkyl group (more particularly a methyl, ethyl or 2-methylpropyl) optionally substituted by a -CONH 2 group or by a phenyl group; or
- R 2 and R 3 identical or different from each other, represent a phenyl group or a heteroaromatic group, more particularly a pyridinyl
- Ri represents a heteroaromatic group optionally substituted by one or two substituents chosen independently of one another from atoms of halogen and heteroaromatic groups, d- 6 alkyls, -OH, -NH 2 , -NHR 2 , -NHCOR 2 , -COOR 2 , -CONH 2 , -CONHR2 and -CH 2 XR 2 , where X is chosen from O, NH and S; and / or Ar represents a phenyl group optionally substituted by one or two substituents chosen independently of one another from halogen atoms and groups alkyls, C- ⁇ .
- 6 thioalkyls C ⁇ - 6 alkoxy, -CH 2 OH, phenoxy, morpholinyl, -CH 2 -morpholinyl, -NH 2 , -NHR 2 , -NR 2 R 3 , -NHSO 2 R 2 , -CN, -SO 2 R 2 , -SO 2 NH 2 , -SO2NHR2, -COOH, -COOR2, -CONH2, -CONHNH 2 , -CO HR 2 , -CH 2 NHR 2 and -CH 2 NR 2 R 3 ; or Ar represents a heteroaromatic group optionally substituted by one or two substituents chosen independently of one another from the atoms halogen and C- ⁇ - 6 alkyl, C ⁇ - 6 thioalkyl, C- ⁇ - 6 alkoxy, -CH 2 OH, phenoxy, morpholinyl, -CH 2 -morpholinyIe, -MH 2 , -NHR
- R 6 alkyl optionally substituted by a -CONH 2 group, by a phenyl group or by a heteroaromatic group; or R 2 and R 3 , identical or different from each other, represent a phenyl group or a heteroaromatic group; and / or n is 0, 1, 2 or 3.
- R 1 represents a heteroaromatic group, more particularly a pyrazolyl, thiazolyl, tetrazolyl, oxazolyl, pyridinyl, isoquinolinyl or pyrrolo [2,3 -c] pyridinyl, optionally substituted by one or two substituents chosen independently of one another from halogen atoms (more particularly chlorine) and heteroaromatic groups (more particularly a pyridinyl), C ⁇ .
- R 1 represents a heteroaromatic group, more particularly a pyrazolyl, thiazolyl, tetrazolyl, oxazolyl, pyridinyl, isoquinolinyl or pyrrolo [2,3 -c] pyridinyl, optionally substituted by one or two substituents chosen independently of one another from halogen atoms (more particularly chlorine) and heteroaromatic groups (more particularly a pyridinyl), C ⁇ .
- 6 alkyls (more particularly methyl), -NH 2 and -CONHR 2 ; and / or Ar represents a phenyl group optionally substituted by one or two substituents chosen independently of one another from the groups -NHSO 2 R 2 , -CN, -SO 2 R 2 , -SO 2 NH 2 , -SO 2 NHR 2 and -CH 2 NHR 2 ; or Ar represents a heteroaromatic group (more particularly a pyridinyl) optionally substituted by one or two substituents chosen independently of one another from the halogen atoms and the C ⁇ groups.
- Ar represents a heteroaromatic group (more particularly a pyridinyl) optionally substituted by one or two substituents chosen independently of one another from the halogen atoms and the C ⁇ groups.
- the present invention also relates to the use, for the preparation of a medicament intended for the treatment and prevention of malaria, of any of the subgroups of the compounds of formula (I) defined above.
- protecting group PG is intended to mean a group which makes it possible to prevent the reactivity of a function or position, during a chemical reaction which may affect it, and which restores this function or position after selo n cleavage of methods known to those skilled in the art.
- protective groups as well as methods of protection and deprotection are given, among others, in Protective groups in Organic Synthesis, Green et al., 3 rd Ed. (John Wiley & Sons, I nc., New York).
- Ri represents a halogen atom, a group -N 0 2 or -CN
- the compounds of general formula (l) can be prepared by the method illustrated in scheme 1.
- This method consists in transforming an indole of general formula ( II), where Ri is a -NO 2 , a -CN or a halogen atom, into indazole-3-carbaldehyde of general formula (III), for example with nitrous acid.
- the compound of general formula (III) is then protected in basic medium by a PG group, of trimethylsilylethoxymethyl (SEM) or mesitylenesulfonyl (Mts) group, to give the indazole-3-carbaldehyde protected in position 1 of general formula (IV) .
- the compound (IV) is oxidized to indazole-3-carboxylic acid of general formula (V), for example by reaction with sodium chlorite.
- Obtaining the indazole-3-carboxamide protected in position 1 of general formula (VII) is done by coupling the compound of general formula (V) with an amine of general formula Ar (CH 2 ) nNH 2 (VI) in which Ar and n are as defined in the general formula (I).
- This coupling reaction can be carried out by activation of a compound of general formula (V) with reagents of coupling, such as carbonyldiimidazole or isopropyl or isobutyl chloroformate.
- the deprotection of the compound of general formula (VII) can be done either by the action of a base such as sodium hydroxide, or in the presence of tetrabutylammonium fluoride (TBAF) and ethylenediamine, or in the presence of trifluoroacetic acid and then heating with ethylenediamine.
- a base such as sodium hydroxide
- TBAF tetrabutylammonium fluoride
- ethylenediamine or in the presence of trifluoroacetic acid and then heating with ethylenediamine.
- the compounds of general formula (I) where Ri represents a -NHR 2 or a -NHCOR 2 are obtained by functionalization of the compounds of general formula (I) corresponding, where Ri is a -NH 2 , according to techniques known to man of career.
- the compounds of general formula (I) where Ri represents a -CH 2 NH 2 are obtained by hydrogenation at atmospheric pressure of a compound of general formula (I), where R ⁇ is a -CN, as obtained according to the scheme 1, for example in the presence of palladium on carbon.
- the compounds of general formula (I) can be obtained according to one of the methods illustrated in schemes 1, 2 and 3. Furthermore, when Ri represents an oxazolyl group, the compounds of formula (I) can be obtained according to scheme 4 and when R 1 represents a thiazolyl group, the compounds of formula (I) can be obtained according to scheme 5.
- Scheme 2 illustrates an alternative method of preparing the compound of general formula (VII) from 5-iodoindole.
- the compound of general formula (IVa), where SEM is a trimethylsilylethoxymethyl group, is obtained by repeating the first two steps illustrated in scheme 1.
- a Suzuki reaction carried out for example in the presence of a boronic acid of general formula R- ⁇ B (OH) 2 (VIII), where Ri represents an optionally substituted phenyl or heteroaromatic group as defined in the formula 12
- general (I) a mineral base, such as sodium carbonate (Na 2 CO 3 ), and palladium (0), makes it possible to obtain the compound of general formula (IV), in which PG represents a SEM group.
- Scheme 3 illustrates a method of preparation from 5-iodo- or 5-bromoisatin.
- 5-iodo- or 5-bromoindazolecarboxylic acid can be obtained by opening the indoledione cycle of 5-iodo- or 5-bromoisatin, for example in the presence of sodium hydroxide, then by diazotization, for example by means of nitrous acid, and finally by reduction and formation of the indazole cycle, for example in the presence of tin chloride (SnCI 2 ).
- the 5-iodo- or 5-bromoindazole-3-carboxylic acid obtained is then protected in basic medium, for example by an SEM group, to give the compound of general formula (IX), in which X represents a bromine or iodine atom.
- Indazole-3-carboxamide of general formula (X) can be obtained by coupling the compound of general formula (IX) with an amine of general formula Ar (CH 2 ) nNH 2 (VI), in which Ar and n are such as defined in general formula (1) _
- This coupling reaction can be carried out by activation of a compound of general formula (IX) by coupling reagents, such as carbonyldiimidazole or isopropyl or isobutyl chloroformate.
- Obtaining the compound of general formula (VII) from the compound of general formula (X) can be done by 2 methods: - either by a Suzuki reaction, carried out in the presence of a boronio acid; eue of general formula R 1 B (OH) 2 (VIII), where R 1 represents an optionally substituted phenyl or heteroaromatic group as defined in the general formula (I), of a base and of palladium (0); - Either via a dioxaborolane of general formula (XI) obtained by reaction of bis (pinacolato) diborane and 1,1'-bis (diphenylphosphino) -ferrocenedichloropalladium on the compound of general formula (X); the intermediate of general formula (XI) then being placed in the presence of a mineral base, such as sodium or potassium acetate, palladium (0) and a compound of general formula RX (XII), where Ri represents an optionally substituted phenyl or heteroaromatic group as defined in the general formula (I
- Scheme 4 illustrates a method of preparing the compounds of general formula (Vlla), that is to say the compounds of general formula (VII) for which Ri represents an oxazolyl group and PG represents a SEM group.
- X represents an iodine atom, is formylated for example in the presence of carbon monoxide and a palladium complex, such as tetrakis (triphenylphosphine) - palladium, then a reducing agent, such as tributyltin hydride in a solvent, such as tetrahydrofuran (THF).
- a solvent such as methanol
- TosMIC tosylmethylisocyanate
- K 2 CO 3 potassium carbonate
- the compound of general formula (I), where Ri represents an oxazolyl group is obtained from the compound of general formula (Vlla) by deprotection as illustrated in the last step of scheme 1.
- Scheme 5 illustrates a method of preparing the compounds of general formula (Vllb), that is to say the compounds of general formula (VII) for which R 1 represents a thiazolyl group and PG represents a SEM group.
- the thiazolyl group is introduced by heating the compound of general formula (X), as defined above and in which X represents an iodine atom, in the presence of the derivative of formula (XIV) illustrated in scheme 5, of tetrakis (triphenylphosphine) palladium in anhydrous THF then by acidification.
- the derivative of formula (XIV) is prepared from 2-trimethylsilyl (thiazole), in the presence of a strong base, such as butyllithium, by reaction of zinc chloride (ZnCI 2 ) in solution in anhydrous ether .
- the compound of general formula (Vllb) thus obtained is deprotected according to the last step of scheme 1 in order to obtain the compound of general formula (I), where R 1 represents a thiazolyl group.
- the paste obtained is added in small portions, with vigorous stirring, to a solution of sulfuric acid (3.40 g, 34.8 mmol in 37 ml H 2 O) pre-cooled to 0 ° C so that the temperature doesn’t not exceed 4 ° C. Stirring is continued for 15 min and then a solution of tin chloride (SnCI 2 .2H 2 O, 9.91 g, 43.9 mmol in 15 ml concentrated HCl) is added slowly so that the temperature does not exceed 4 ° C. Leave to react for several hours. The reaction mixture is filtered. The solid is washed with boiling water and then taken up with hot ethanol. Insoluble impurities are removed by filtration. 2 g of product are obtained.
- the reactor is degassed several times with argon then, under argon, tetrakis- (triphenylphosphine) palladium (48 mg, 0.03 equiv.) Is added.
- the reaction mixture is heated to 85 ° C overnight.
- the solvents are evaporated in vacuo and the residue is extracted with AcOEt / H 2 O.
- the organic phase is dried and evaporated.
- the crude product is chromatographed on silica gel (200 g). Elution with AcOEt / MeOH (95/5) provides, after evaporation, 370 mg of product.
- reaction mixture is acidified with 4N HCl (1.2 ml), concentrated in vacuo and then diluted with H 2 O.
- the precipitate is filtered, washed with CH 3 OH and diethyl ether.
- the solid obtained is recrystallized from CH 2 CI 2 / MeOH. 190 mg of product are obtained in the form of a white powder.
- reaction mixture is stirred for 30 min and then methyl iodide (2.17 ml, 1.4 equiv.) Is added dropwise. Stirring is continued for 2 h at -78 ° C. A saturated aqueous solution of NH CI (120 ml) is added. After evaporation of the solvents, the reaction mixture is extracted with AcOEt. The organic phase is washed with brine, dried over MgSO 4 and evaporated. The yellow solid obtained is taken up in AcOEt. The suspension is filtered. The filtrate is evaporated and then the residue is chromatographed on silica gel, eluting with a petroleum ether / AcOEt mixture (97.5 / 2.5).
- 1,1 '-bis (diphenylphosphino) ferrocene-dichloropalladium III (310 mg, 0.38 mmol, 0.05 equiv.) Is added under argon.
- the reaction mixture is heated at 80 ° C for 1.5 h.
- the extraction with AcOEt / H 2 O makes it possible to isolate an orange oil which is chromatographed on silica gel, eluting with AcOEt.
- the yellow oil obtained is crystallized from diethyl ether. 2.56 g of product are obtained in the form of a white powder.
- Example 3 N- (pyridin-4-yl) -5-isoquinolin-4-yl-1H-indazole-3-carboxamide Intermediate 3.1 5-iodo-1H-indazole-3-carbaldehyde Under argon, at a suspension of 5-iodoindole (9.722 g, 40 mmol) in water is added in portions of 1 g of sodium nitrite (27.6 g, 400 mmol) and then dropwise a 6N HCl solution (59 ml ). The temperature of the reaction mixture is maintained in below 15 ° C then the reaction mixture is left under vigorous stirring at room temperature overnight.
- reaction mixture is heated using an oil bath controlled at 85 ° C for 5 h and then concentrated in vacuo.
- the residue is taken up in AcOEt.
- the organic solution is washed with brine, dried and then evaporated to give a crude product which is purified on silica gel (150 g). Elution in a gradient from CH 2 CI 2 to CH 2 CI 2 / AcOEt (9/1) provides 0.84 g of product.
- reaction mixture The temperature of the reaction mixture is maintained at 0 ° C for 30 min, then the reaction mixture is stirred for 4.5 h at room temperature and, after acidification with HCl 6N (5ml), overnight. The reaction mixture is evaporated. The residue is taken up in AcOEt. This solution is washed with H 2 0 and brine, dried over Na 2 SO 4 and evaporated to give 0.50 g of product in the form of a white solid.
- reaction mixture is stirred for 30 min at 0 ° C. and then overnight at room temperature. It is then evaporated and taken up in AcOEt. The organic solution is washed with brine, dried over Na 2 SO 4 and evaporated. The oil obtained is purified on silica gel. Elution with a CH 2 CI 2 / MeOH mixture (9/1) makes it possible to isolate 250 mg of product in the form of a yellow oil.
- the solid obtained is washed with diethyl ether and then purified on silica gel (50 g).
- the compound obtained is eluted with an AcOEt / MeOH mixture (9/1).
- a diethyl ether / petroleum ether mixture is taken up and then filtered. 182 mg of product are obtained in the form of a white solid.
- Example 4 (compound No. 9) N- (pyridin-4-yl) -5- (1, 3-thiazol-5-yl) -1 H-indazole-3-carboxamide
- Intermediate 4.1 N-pyridin-4-yl-5- (1, 3-thiazol-5-yl) - (2-trimethylsilylethoxymethyl) -1 H-indazole-3-carboxamide
- n -butyllithium 8.25 ml, 1.6 N in hexane, 13.2 mmol
- anhydrous diethyl ether (12 ml) cooled to -78 ° C is added dropwise a solution of 2-trimethylsilyl (thiazole) (1.97 ml, 12 mmol) in anhydrous diethyl ether (12 ml).
- the reaction mixture is acidified to pH 2 by addition of 1N HCl and then concentrated in vacuo. 1N sodium hydroxide is added to reach pH 10.
- the solid obtained is stirred in the presence of CH 2 CI 2 and the zinc salts are separated by filtration. The filtrate is washed with water. The organic phase is dried over MgSO and then evaporated.
- the brown oil obtained (5.10 g) is quickly filtered through silica. After crystallization from diethyl ether, a yellow solid (2.40 g) is obtained. This solid is chromatographed on silica (300 g). A petroleum ether / AcOEt (2/3) to petroleum ether / AcOEt (1/3) elution gradient makes it possible to separate 2 isomers.
- the expected compound is the most polar. 1.08 g of product are obtained in the form of a white powder.
- N-pyridin-4-yl-5- (1, 3-thiazol-5-yl) -1H-indazole-3-carboxamide This compound is obtained by cleavage of the protecting group SEM of intermediate 4.1 (452 mg, 1 mmol ).
- the crude product is recrystallized from a MeOH / AcOEt mixture in the presence of a trace of water and then is filtered. 22.5 g of product are obtained in the form of a yellow solid.
- Example 9 (Compound No. 14) N- ⁇ 3 - [(ethylamino) methyl] phenyl ⁇ -5-isoquinolin-4-yl-1 H-indazole-3-carboxamide hydrochloride Intermediate 9.1 N- (3-nitrobenzyl hydrochloride ) ethanamine Under argon, to a solution of N- (3-n itrobenzyl) acetamide (3.89 g, 20 mmol) in anhydrous THF (100 ml) is added dropwise a solution of BH 3 -THF (1 M , 60 ml). The reaction mixture is stirred at 40 ° C overnight. MeOH (40 ml) is added.
- intermediate 9.2 (3-aminobenzyl) ethylamine Under argon, intermediate 9.1 (3.90 g, 18 mmol) in glacial acetic acid (100 ml) is stirred at 110 ° C for 30 min in the presence of iron (6.64 g, 118.8 mmol). After cooling, the iron salts are filtered and washed with acetic acid (15 ml). The filtrate is diluted in water (200 ml) then brought to pH 9 by addition of solid K 2 CO 3 and to pH 12 by addition of NaOH. The resulting suspension is extracted with CH 2 CI 2 . The organic solution is dried and then evaporated to give the expected product. 2.65 g of product are obtained in the form of a yellow oil.
- the compounds of formula (I) have been the subject of pharmacology tests! ues in vitro, which have shown their inhibitory activity on P. falciparum.
- Two strains of P. falciparum are used, originating from Colombia (FcB1, strain moderately resistant to chloroquine) and Cameroon (FcM29, strain highly resistant to chloroquine).
- FcB1 strain moderately resistant to chloroquine
- FcM29 strain highly resistant to chloroquine.
- These P. falciparum strains are continuously cultivated in human red cells according to the method of Trager and Jensen (W. Trager, J. Jensen, Science, 1976, 193, 673-675): the parasites are maintained in human red blood cells.
- Each daughter dilution is then diluted 1/50 in RPMI 1640 supplemented with 5% human serum, the set of dilutions are being carried out at 37 ° C. These dilutions are then added to the parasites in culture in the microplates. After adding the test compound, the parasites are cultured in RPMI 1640 at 5% human serum and 1% dimethyl sulfoxide. The growth of the parasites is measured by the incorporation of tritiated hypoxanthine (added 24 h after the start of exposure to the test compound) compared to the incorporation in the absence of the test compound (taken as 100%).
- Cl 50 values concentration of compound required to inhibit 50% parasite growth are determined by plotting the percentage of inhibition versus log dose using the GraphPad Prism 4 software processing ® (GraphPad software, Inc., 5755 Oberlin Drive, # 110, San Diego, CA 92121, USA).
- the Cl 50 values measured for the compounds of formula (I) on one or other of the P. falciparum strains used are, for the most active compounds, less than 1 ⁇ M.
- compounds 3, 10, 11, 12, 14 and 21 in the table above present respectively CI 50 of 600, 130, 800, 800, 272 and 406 nM on the strain FcM29.
- the compounds of formula (I) and their salts can be presented in all pharmaceutical forms suitable for administration by the oral, sublingual, injectable (such as the subcutaneous, intramuscular and intravenous), topical routes. , local, intratracheal, intranasal, transdermal or rectal, in combination with appropriate excipients.
- the present invention also relates to a method of treatment and / or prevention of malaria which comprises the administration, to a patient, of an effective dose of a compound of formula (I), or a of its pharmaceutically acceptable salts or hydrates or solvates.
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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JP2007503371A JP2007529479A (ja) | 2004-03-16 | 2005-03-15 | マラリアの治療及び予防を意図する医薬品を調製するためのインダゾールカルボキサミド誘導体の使用 |
EP05739655A EP1727544A1 (fr) | 2004-03-16 | 2005-03-15 | Utilisation de derives d'indazolecarboxamides pour la preparation d'un medicament destine au traitement et a la prevention du paludisme |
IL177914A IL177914A0 (en) | 2004-03-16 | 2006-09-06 | Use of indazolecarboxamide derivatives for the preparation of a medicament that is intended for the treatment and prevention of paludism |
US11/531,332 US7842711B2 (en) | 2004-03-16 | 2006-09-13 | Indazolecarboxamide derivatives for the treatment and prevention of malaria |
US12/896,203 US20110021467A1 (en) | 2004-03-16 | 2010-10-01 | Indazolecarboxamide derivatives for the treatment and prevention of malaria |
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FR0402702A FR2867778B1 (fr) | 2004-03-16 | 2004-03-16 | Utilisation de derives d'indazolecarboxamides pour la preparation d'un medicament destine au traitement et a la prevention du paludisme |
FR0402702 | 2004-03-16 |
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US11/531,332 Continuation US7842711B2 (en) | 2004-03-16 | 2006-09-13 | Indazolecarboxamide derivatives for the treatment and prevention of malaria |
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WO2005099703A1 true WO2005099703A1 (fr) | 2005-10-27 |
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PCT/FR2005/000612 WO2005099703A1 (fr) | 2004-03-16 | 2005-03-15 | Utilisation de derives d'indazolecarboxamides pour la preparation d'un medicament destine au traitement et a la prevention du paludisme |
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US (2) | US7842711B2 (fr) |
EP (1) | EP1727544A1 (fr) |
JP (1) | JP2007529479A (fr) |
CN (1) | CN1933834A (fr) |
AR (1) | AR048859A1 (fr) |
FR (1) | FR2867778B1 (fr) |
IL (1) | IL177914A0 (fr) |
MY (1) | MY146377A (fr) |
TW (1) | TW200602043A (fr) |
WO (1) | WO2005099703A1 (fr) |
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FR2867778B1 (fr) * | 2004-03-16 | 2006-06-09 | Sanofi Synthelabo | Utilisation de derives d'indazolecarboxamides pour la preparation d'un medicament destine au traitement et a la prevention du paludisme |
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TW200602043A (en) | 2006-01-16 |
EP1727544A1 (fr) | 2006-12-06 |
FR2867778B1 (fr) | 2006-06-09 |
AR048859A1 (es) | 2006-06-07 |
US7842711B2 (en) | 2010-11-30 |
JP2007529479A (ja) | 2007-10-25 |
FR2867778A1 (fr) | 2005-09-23 |
CN1933834A (zh) | 2007-03-21 |
US20110021467A1 (en) | 2011-01-27 |
MY146377A (en) | 2012-08-15 |
US20070185187A1 (en) | 2007-08-09 |
IL177914A0 (en) | 2006-12-31 |
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