WO2017203083A1 - Triazoles para la regulación de la homeostasis de calcio intracelular - Google Patents
Triazoles para la regulación de la homeostasis de calcio intracelular Download PDFInfo
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- WO2017203083A1 WO2017203083A1 PCT/ES2017/070344 ES2017070344W WO2017203083A1 WO 2017203083 A1 WO2017203083 A1 WO 2017203083A1 ES 2017070344 W ES2017070344 W ES 2017070344W WO 2017203083 A1 WO2017203083 A1 WO 2017203083A1
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- KRSARDYLXWULMH-HNNXBMFYSA-N CC(C)C[C@@H](C(O)=O)[n]1nnc(CSc2cc(OC)ccc2)c1 Chemical compound CC(C)C[C@@H](C(O)=O)[n]1nnc(CSc2cc(OC)ccc2)c1 KRSARDYLXWULMH-HNNXBMFYSA-N 0.000 description 1
- SJNBGQAWOBYNQM-IBGZPJMESA-N COC([C@H](Cc1ccccc1)[n]1nnc(CSc2cc(OC)ccc2)c1)=O Chemical compound COC([C@H](Cc1ccccc1)[n]1nnc(CSc2cc(OC)ccc2)c1)=O SJNBGQAWOBYNQM-IBGZPJMESA-N 0.000 description 1
- UOGHVSYISRWLAG-UHFFFAOYSA-N OC(C[n]1nnc(CSc2cc(Cl)ccc2)c1)=O Chemical compound OC(C[n]1nnc(CSc2cc(Cl)ccc2)c1)=O UOGHVSYISRWLAG-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D249/00—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms
- C07D249/02—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms not condensed with other rings
- C07D249/04—1,2,3-Triazoles; Hydrogenated 1,2,3-triazoles
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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
- A61K31/4192—1,2,3-Triazoles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P19/00—Drugs for skeletal disorders
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P21/00—Drugs for disorders of the muscular or neuromuscular system
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P21/00—Drugs for disorders of the muscular or neuromuscular system
- A61P21/04—Drugs for disorders of the muscular or neuromuscular system for myasthenia gravis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61P25/00—Drugs for disorders of the nervous system
- A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/12—Drugs for disorders of the metabolism for electrolyte homeostasis
- A61P3/14—Drugs for disorders of the metabolism for electrolyte homeostasis for calcium homeostasis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/04—Inotropic agents, i.e. stimulants of cardiac contraction; Drugs for heart failure
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/06—Antiarrhythmics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
- A61K9/0029—Parenteral nutrition; Parenteral nutrition compositions as drug carriers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0053—Mouth and digestive tract, i.e. intraoral and peroral administration
Definitions
- the present invention relates to new substituted 1,2,3-triazoles useful for improving or restoring the function of intracellular calcium homeostasis in human and animal cells. It is also related to methods of synthesis of said compounds, pharmaceutical compositions containing them, and their use to prevent or treat musculoskeletal, cardiac and neurodegenerative disorders.
- Muscular dystrophies are hereditary heterogeneous diseases that are characterized by weakness and progressive atrophy of skeletal muscle.
- Duchenne muscular dystrophy is one of the most frequent forms, it is linked to the X chromosome and occurs in 1 in 3500 males.
- allelic form BMD
- both are produced by mutations in the gene encoding dystrophin, a 427-kDa cytoskeleton protein. Genetic studies are not enough for the eradication of the disease due to the high incidence of sporadic cases, so the search for new effective therapies is urgently needed.
- LGMDs Waist muscular dystrophies
- calpainopathy or LGMD2A is the most frequent form and is caused by mutations in the gene that encodes calpain 3 (CAPN3), a non-lysosomal cysteine protease necessary for the proper functioning and regeneration of muscle.
- Type 1 myotonic dystrophy (DM1) is the most common adult form of muscular dystrophy and is characterized by muscle weakness, myotonia and multisystemic involvement. It is an autosomal dominant hereditary disease caused by an unstable expansion of the CTG triplet repeat located in the 3 ' non-coding region of the DMPK gene, located on the long arm of chromosome 19 and expressed predominantly in skeletal muscle.
- High baseline levels of intracellular Ca 2+ involve the activation of calpain, protein degradation, the opening of mitochondrial permeability transition pores (PTPm) and, finally, the death of muscle fiber due to necrosis.
- the increase in intracellular Ca 2+ levels is a complex process that involves Ca 2+ flows through the sarcolemma, calcium losses from the sarcoplasmic reticulum (RS) and abnormal levels of Ca 2+ in the RS.
- IP3R inositol 1,4,5-triphosphate receptors
- Myotonic dystrophy has been associated with the deregulation of the alternative connection of the CACNAI S gene that encodes the alpha 1 S subunit of the DHPR dihydropyridine receptor, an essential voltage sensor in the excitation-contraction coupling (E-C).
- E-C excitation-contraction coupling
- disorders and diseases are associated with congenital or acquired modifications of the RyRl protein (Kushmir et al. Recent Pat Biotechnol. 2012, 6, 157-166 "Ryanodine receptor patents”).
- Such disorders and diseases include conditions of the skeletal muscle, heart and nervous system. More specifically, they include, but are not limited to, congenital myopathies, muscular dystrophies, sarcopenia, skeletal muscle fatigue, acquired muscle weakness or atrophy, malignant hyperthermia, irregular heart rhythm disorders and diseases associated with exercise, congestive heart failure, hypertrophic cardiomyopathy, Alzheimer's disease and memory loss associated with age.
- JTV-519 4- [3- (4-benzylpiperidinyl) -propanoyl] -2,3,4,5-tetrahydro-l, 4- benzothiazepine
- Compound JTV-519 acts on the ryanodine RyR2 receptor associated with calstabine2 (FKBP12.6), increasing the affinity of FKBP12.6 for the phosphorylated RyR2 receptor via PKA kinase, and also for the mutant RyR2 receptor which, otherwise , have low affinity or do not bind to FKBP12.6.
- This JTV-519 action repairs the Ca 2+ ion leak in RyR2 (Marks, AR et al US2004 / 229781A1 "Compounds and methods for treating and preventing exercise-induced cardiac arrhythmias").
- the authors of the present invention have developed new compounds derived from triazole, in particular 4 - [(phenylthio) alkyl] -lH-1, 2,3-triazoles, suitable for modulating RyR receptors that regulate calcium function in animal or human cells.
- said compounds are designated as "AHK”.
- the compounds according to the present invention have the capacity to modulate intracellular calcium homeostasis in muscular dystrophic fibers, reversing the observed increases in intracellular calcium.
- said compounds have a modulating effect on RyR, their ability to recover the RyRl-calstabine interaction on healthy human myotubes subjected to nitro-oxidative stress having been demonstrated.
- a first aspect of the invention is related to a 1,4,3-disubstituted 1,2,3-triazole compound of Formula (I):
- R 1 is a biradical C1-C4 alkylene optionally substituted by one or more substituents independently selected from the group consisting of C 1-4 alkyl, C 6 -aryl aryl, F, Cl, CN and N0 2 ;
- R 2 is a biradical Ci-C 6 alkylene, in which 1, 2 or 3 -CH 2 groups - may optionally be replaced by groups selected from -O- and -S-; and wherein the biradical Ci-C 6 alkylene may be optionally substituted with one or more groups independently selected from C 1-4 alkyl, allyl, propargyl, hydroxymethyl, 1- ethyl hydroxy, 2-hydroxy ethyl, 3-aminopropyl, 4 -aminobutyl, 3-guanidylpropyl, 3- indolylmethyl, C 6 -io aryl, benzyl, 4-hydroxybenzyl, C 6 -io heteroaryl, F, Cl, OH, 0 (C M alkyl), CN, N0 2 , CO (C M alkyl), C0 2 (C M alkyl), -CO H (C M alkyl), - CON (C M alkyl) 2 ;
- R 3 is a group independently selected from H, C 1-4 alkyl, C 6 -aryl aryl, F, Cl,
- X is independently selected from the group consisting of OH, 0 (C 1-4 alkyl), 0 (C 6- aryl), OCF 3 , S (C M alkyl), S (C 6- aryl aryl), alkyl Ci- 6 , CF 3 , HC (0) (C1-4 alkyl) and halogen; or two X groups may represent a birradical methylenedioxy, ethylenedioxy or propylenedioxy; and
- Y is selected from the group consisting of -OH, -C0 2 H, -C0 2 (C 1-4 alkyl), -C0 2 (allyl), -C0 2 (benzyl), -S0 3 H, - H 2 , - H (C M alkyl), -N (C M alkyl) 2 , N (C M alkyl) 3 and - N (heterocyclyl or heteroaryl), wherein said heterocyclyl or heteroaryl is optionally substituted by a C 1-4 alkyl group and where the N atom is part of the heterocyclyl or heteroaryl; or a stereoisomer, pharmaceutically acceptable salt, solvate or complex thereof, or an isotopically labeled derivative or a prodrug thereof.
- Another aspect of the invention comprises a method of synthesis of the compounds of Formula (I), comprising: a) reacting an alkyne of Formula (II) with an azide of Formula (III),
- Y is a group as defined above, optionally protected with a carboxyl protecting group, a hydroxyl protecting group or an amino protecting group; b) when n is 0 in the compound of formula (I) obtained in step a), optionally treating said compound of formula (I) with an oxidizing agent to give a compound of formula (I) wherein n is 1 or 2 , R 1 , R 2 , R 3 , m and X are as previously defined, and Y is a group as defined previously optionally protected with a carboxyl protecting group, a hydroxyl protecting group or an amino protecting group; and c) when the compound of formula (I) obtained in step a) or b) has a Y group protected with a protective group, remove said protective group to give a compound of formula (I) wherein R 1 , R 2 , R 3 , m, n, X and Y are as previously defined.
- Another aspect of the invention is related to pharmaceutical compositions containing a compound of Formula (I), defined as indicated above, together with one or more pharmaceutically acceptable excipients or carriers.
- a further aspect of the present invention relates to the use of a compound of formula (I) as defined above for the preparation of a medicament.
- Figure 1 shows the toxicity curves of the compounds AHK1, AHK2 and S-107 on human myotubes after 24 h of incubation using the Citotox 96 colorimetric assay.
- Figure 2 shows the in vitro effect of the AHK1 and AHK2 compounds on intracellular calcium levels at rest in mouse muscle fibers:
- Figure 3 shows the in vitro effect of the AHK1 and AHK2 compounds on the RyRl-calstabinal interaction in healthy human myotube cultures exposed to peroxynitrite stress.
- Figure 5 shows the in vivo effect of the compounds AHKl and AHK2 on muscle degeneration / regeneration in dystrophic mdx mice:
- Figure 6 shows the effect of AHKl treatment on the gene expression pattern of the anterior tibial muscle of mdx mice.
- Figure 7 shows the in vivo effect of AHK2 compounds on abnormal CNS function in dystrophic mdx mice:
- Figure 8 shows the in vivo effect of AFD 2 compounds on the cardiomyopathy of mdx mice induced by isoproterenol.
- Upper panel representative images of heart cuts of control mice BL10 (Ctl), mdx mice (mdx) and mdx mice treated with AFD 2 (mdx AFD 2).
- Calibration bar lmm. Evans Blue uptake is visualized by fluorescence microscopy.
- the present invention provides new triazole compounds that are capable of treating or preventing disorders or diseases associated with intracellular calcium dysregulation or RyR receptor dysfunction.
- the first aspect of the present invention is directed to a compound of formula (I): NN m
- R is a biradical C1-C4 alkylene optionally substituted by one or more substituents independently selected from the group consisting of C 1-4 alkyl, C 6 -aryl aryl, F, Cl, CN and N 2 ;
- R 2 is a biradical Ci-C 6 alkylene, in which 1, 2 or 3 -CH 2 groups - may optionally be replaced by groups selected from -O- and -S-; and wherein the biradical Ci-C 6 alkylene may be optionally substituted with one or more groups independently selected from C 1-4 alkyl, allyl, propargyl, hydroxymethyl, 1- ethyl hydroxy, 2-hydroxy ethyl, 3-aminopropyl, 4 -aminobutyl, 3-guanidylpropyl, 3- indolylmethyl, C 6 -io aryl, benzyl, 4-hydroxybenzyl, C 6 -io heteroaryl, F, Cl, OH, 0 (C M alkyl), CN, N0 2 , CO (alkyl C M ), C0 2 (C M alkyl), -CO H (C M alkyl), - CON (C M alkyl) 2 ; R 3 is a group independently
- X is independently selected from the group consisting of OH, 0 - alkyl (C 1 -4), 0 (aryl C 6- io), OCF 3, S - alkyl (C M), S (aryl C 6- io) alkyl Ci- 6 , CF 3 , HC (0) (C1-4 alkyl) and halogen; or two X groups may represent a birradical methylenedioxy, ethylenedioxy or propylenedioxy; and
- Y is selected from the group consisting of -OH, -C0 2 H, -C0 2 (C 1 -4 alkyl), -C0 2 (allyl), -C0 2 (benzyl), -S0 3 H, - H 2, - H alkyl (C M), -N (Ci -4) 2 and N (alkyl C M) 3 and - N (heterocyclyl or heteroaryl), wherein said heterocyclyl or heteroaryl is optionally substituted by a C 1 alkyl - 4 and where the N atom is part of the heterocyclyl or heteroaryl; or a stereoisomer, pharmaceutically acceptable salt, solvate or complex thereof, or a derivative thereof isotopically labeled, or a prodrug thereof.
- biradical alkylene refers to a biradical formed by a linear or branched hydrocarbon chain consisting of atoms of carbon and hydrogen, which has no unsaturation and is attached at its ends to the rest of the molecule through simple bonds, such as, for example, methylene, ethylene, propylene, butylene, etc.
- the reference to biradical C 1 -C 4 alkylene refers to when said birradical has between 1 and 4 carbon atoms
- the mention to birradical Ci-C 6 alkylene refers to when said birradical has between 1 and 6 carbon atoms .
- the biradical alkylene may be substituted as specified in the definitions of the substituents R 1 and R 2 in the compound of formula (I).
- alkyl refers to a radical formed by a linear or branched hydrocarbon chain consisting of carbon and hydrogen atoms, which contains no saturation and is linked to the rest of the molecule by a single bond, for example methyl, ethyl, n-propyl, i-propyl, n-butyl, t-butyl, n-pentyl, etc.
- C 1 -C 4 alkyl refers to when said radical has between 1 and 4 carbon atoms.
- Ce-Cw aryl refers to a radical formed by an aromatic ring of between 6 and 10 members consisting of carbon and hydrogen atoms, preferably a phenyl radical.
- Ce-Cw heteroaryl refers to a radical formed by an aromatic ring of between 6 and 10 members consisting of carbon and hydrogen atoms and one or more heteroatoms selected from O, N and S.
- -N heterocyclyl
- -N heterocyclyl
- -N heterocyclyl
- -N heteroaryl
- -N heteroaryl
- R 2 a radical formed by an aromatic ring of between 6 and 10 members consisting of carbon and hydrogen atoms and one or more heteroatoms selected from O, N and S, at least one of them being N and this being directly attached to the radical R 2 .
- halogen refers to F, Cl, Br or I.
- isotopically labeled derivative refers to a compound of formula (I) in which at least one of its atoms is isotopically enriched.
- compounds of formula (I) in which a hydrogen is replaced by a deuterium or tritium, a carbon is replaced by a 13 C or 14 C enriched atom, or a nitrogen is replaced by a 15 N enriched atom they are inside of the scope of this invention.
- salt preparation refers to any pharmaceutically acceptable salt, ester, solvate, or any other compound that, in its administration to the recipient, is capable of providing (directly or indirectly) a compound of formula (I) such and as described herein. Salt preparation can be carried out by methods known in the state of the art.
- salts of the compounds provided herein are synthesized from the compound described above containing a basic or acidic unit by conventional chemical methods.
- such salts are prepared, for example, by reacting the free acidic or basic forms of these compounds with a stoichiometric amount of the appropriate base or acid in water or in an organic solvent or in a mixture of both.
- non-aqueous media such as ether, ethyl acetate, ethanol, isopropanol or acetonitrile are preferred.
- acid addition salts include addition salts of mineral acids such as, for example, hydrochloride, hydrobromide, hydroiodide, sulfate, nitrate, phosphate, and organic acid addition salts such as, for example, acetate, maleate, fumarate , citrate, oxalate, succinate, tartrate, malate, mandelate, methanesulfonate and p-toluenesulfonate.
- mineral acids such as, for example, hydrochloride, hydrobromide, hydroiodide, sulfate, nitrate, phosphate
- organic acid addition salts such as, for example, acetate, maleate, fumarate , citrate, oxalate, succinate, tartrate, malate, mandelate, methanesulfonate and p-toluenesulfonate.
- alkaline addition salts include inorganic salts such as, for example, sodium, potassium, calcium, ammonium, magnesium, aluminum and lithium, and organic alkaline salts such as, for example, ethylenediamine, ethanolamine, ⁇ , ⁇ -dialkylene ethanolamine, glucamine and basic amino acid salts.
- Solvates refer to a salt of the compound of formula (I) in which the molecules of a pharmaceutically suitable solvent are incorporated into the crystalline network. Solvation methods in general are known in the state of the art. Examples of pharmaceutically suitable solvents are ethanol, water and the like. In a particular embodiment the solvate is a hydrate.
- the compounds of formula (I) or their salts or solvates are preferably in pharmaceutically acceptable form or in substantially pure form.
- a pharmaceutically acceptable form it is understood, inter alia, that they have a pharmaceutically acceptable level of purity, excluding normal pharmaceutical additives such as diluents and excipients, and not including any material considered toxic at normal dosage levels.
- the purity levels for the drug are preferably above 50%, more preferably above 70%, and even more preferably above 90%. In a preferred embodiment it is above 95% of the compound of formula (I), or of its salts or solvates.
- the compounds of the present invention represented by the formula (I) described above may include any stereoisomer depending on the presence of chiral centers, including enantiomers and diastereoisomers.
- the individual isomers, enantiomers or diastereomers and mixtures thereof are within the scope of the present invention.
- prodrug is used in its broadest sense and encompasses those derivatives that are converted in vivo into the compounds of the invention. Such derivatives include, depending on the functional groups present in the molecule and without limitation, esters, amino acid esters, phosphate esters, sulphonate esters of metal salts, carbamates and amides. Examples of methods for producing a prodrug of a given active compound are known to one skilled in the art and can be found, for example, in Krogsgaard-Larsen et al. "Textbook of Drugdesign and Discovery” Taylor & Francis (April 2002).
- R 1 is -CH 2 -.
- R 2 is a birradical C 1-4 alkylene optionally substituted with one or two independently selected substituents from the group consisting of methyl, ethyl, propyl, isopropyl, allyl, propargyl, butyl, isobutyl, sec-butyl, tere-butyl, hydroxymethyl, 1-hydroxy ethyl, 2-hydroxyethyl, 3- aminopropyl, 4-aminobutyl, 3- guanidylpropyl, 3-indolylmethyl, phenyl, 1-naphthyl, 2- naphthyl, benzyl, 4-hydroxybenzyl, and C 6 -io- heteroaryl More preferably, R 2 is a birradical -CH 2 - or -CH 2 -CH 2 -, optionally substituted with one or two substituents from the group consisting of methyl, ethyl, propyl,
- R 2 is a birradical -CH 2 - optionally substituted with two methyl substituents or with a substituent selected from the group consisting of isopropyl, isobutyl and benzyl, or R 2 is a birradical -CH 2 -CH 2 - .
- R 2 is a birradical -CH 2 - or -CH 2 -CH 2 -.
- R 3 is H.
- m is 1.
- n is 0.
- X is -0 - alkyl (C 1 -4) or halogen, more preferably is a methoxy group in meta or para or chlorine position.
- Y is selected from the group consisting of C0 2 H, C0 2 Me, H 2 , - HMe, - Me 2 , - Me 3 , - HEt, - Et 2 , - Et 3 ,
- Y is selected from the group consisting of C0 2 H, C0 2 Me, H 2, -NHMe, -NMe 2, -NMe 3, -NHEt, -NEt 2 -NEt 3, pyrrolidin-l- ilo, piperidin-l-yl, morpholin-4-yl, 4-piperazin-l-yl, 4-methyl-piperazin-l-yl, pyridin-l-yl, more preferably C0 2 H and -NMe 2 , even more preferably Y is -C0 2 H or a pharmaceutically acceptable salt thereof.
- the compounds of formula (I) are selected from the group consisting of: l-carboxymethyl-4- [3- (methoxy) phenylthiomethyl] -lH-1, 2,3-triazole, l- [2- (N, N-dimethylamino) ethyl] -4 4- (methoxy) phenylthiomethyl] -lH-l, 2,3-triazole, l-carboxymethyl-4- [4- (methoxy) phenylthiomethyl] -lH -l, 2,3-triazole, (S) -l- (1-carboxy-2-phenylethyl) -4- [3 - (methoxy) phenylthiomethyl] -1 H- 1, 2, 3 -triazole, (R) -l- (l-carboxy-2-phenylethyl) -4- [3- (methoxy) phenylthiomethyl] -lH-l, 2,
- R 2 is an alkylene biradical C 1 -4 wherein one or two -CH 2 - are replaced by -O-, and wherein said alkylene biradical C 1 -C 4 is optionally substituted with one or two C 1 -C 4 alkyl groups, preferably selected from methyl, ethyl, n-propyl, isopropyl, n-butyl and tert-butyl.
- R 2 is a birradical -CH 2 - or -CH 2 -CH 2 -, optionally substituted with one or two substituents independently selected from the group consisting of methyl, isopropyl and isobutyl. Even more preferably, R 2 is a birradical -CH 2 - optionally substituted with two methyl substituents or with a substituent selected from the group consisting of isopropyl and isobutyl, or R 2 is a birradical -CH 2 -CH 2 -.
- R 3 is H.
- m is 1.
- n 0.
- X is -0 (C 1-4 alkyl) or halogen, more preferably it is a methoxy group in meta or para position or chlorine.
- Y is selected from the group consisting of H 2 , - H (C1-C4 alkyl), -N (Ci-C 4 alkyl) 2 , -N (Ci- alkyl C 4 ) 3 ,
- Y is selected from - H 2 , - HMe, - Me 2 , - Me 3 , - HEt, - Et 2 , - Et 3 , pyrrolidin-l-yl, piperidin-l-yl, morpholin-4-yl, 4-piperazin-l-yl, 4-methyl-piperazin-l-yl, pyridin-l-yl or a pharmaceutically acceptable salt of said groups. More preferably, Y is -Me 2 , or a pharmaceutically acceptable salt thereof.
- the radical R 1 is -CH 2 -.
- R 2 is a biradical C 1-4 alkylene optionally substituted with one or two substituents independently selected from the group consisting of methyl, ethyl, propyl, isopropyl, allyl, propargyl, butyl, isobutyl , sec-butyl, tere-butyl, hydroxymethyl, 1-hydroxy ethyl, 2-hydroxyethyl, 3- aminopropyl, 4-aminobutyl, 3-guanidylpropyl, 3-indolylmethyl, phenyl, 1-naphthyl, 2- naphthyl, benzyl, 4- hydroxybenzyl, and C 6 -io- heteroaryl More preferably, R 2 is a birradical -CH 2 - or -CH 2 -CH 2 -, optionally substituted with one or two substituents independently selected from the group consisting of methyl, isopropyl, isobuty
- R 2 is a birradical -CH 2 - optionally substituted with two methyl substituents or with a substituent selected from the group consisting of isopropyl, isobutyl and benzyl, or R 2 is a birradical -CH 2 -CH 2 - .
- R 2 is a birradical -CH 2 - or -CH 2 -CH 2 -.
- R 3 is H.
- n is 0.
- X is -0 (C 1-4 alkyl) or halogen, more preferably it is a methoxy group in meta or para position or chlorine.
- Y is selected from the group consisting of C0 2 H, C0 2 (C1-C4 alkyl), H 2 , - H (C1-C4 alkyl), -N (alkyl Ci- C 4 ) 2 , -N (Ci-C 4 alkyl) 3 ,
- Y is selected from - H 2 , - HMe, - Me 2 , - Me 3 , - HEt, - Et 2 , - Et 3 , pyrrolidin-l-yl, piperidin-l-yl, morpholin-4-yl, 4-piperazin-l-yl, 4-methyl-piperazin-l-yl, pyridin-l-yl or a pharmaceutically acceptable salt of said groups.
- Y is selected from the group consisting of C0 2 H and - Me 2 or a pharmaceutically acceptable salt thereof.
- the compounds of formula (I) of the present invention can be prepared by a process comprising reacting an alkyne of formula (II) with an azide of formula (III):
- R 1 , R 2 , R 3 , m, n and X in the compounds of formulas (II) - (III) are as defined for the compounds of formula (I), and where Y is a group as defined for compounds of formula (I), optionally protected with a carboxyl protecting group, a hydroxyl protecting group or an amino protecting group, depending on the nature of said group Y.
- This reaction can be carried out in the presence of a copper catalyst, as per example, copper (II) sulfate / sodium ascorbate, copper (I) iodide or copper (I) acetate.
- a copper catalyst as per example, copper (II) sulfate / sodium ascorbate, copper (I) iodide or copper (I) acetate.
- the reaction between the compound of formula (II) and the compound of formula (III) is carried out in the presence of a base, such as, for example, sodium acetate, diisopropylamine or triethylamine.
- a base such as, for example, sodium acetate, diisopropylamine or triethylamine.
- the compound of formula (I) obtained according to the above procedure can be treated with an oxidizing agent to give a compound of formula (I) in which n is 1 or 2.
- oxidizing agents include, for example, 3-chloroperbenzoic acid or tere-butyl hydroperoxide.
- oxidizing agents include, for example, 3-chloroperbenzoic acid or tere-butyl hydroperoxide.
- said protective group is removed to give a compound of formula (I) wherein R 1 , R 2 , R 3 , m, n, X and Y are as defined for the compound of formula (I).
- the removal of the protective group can be performed following procedures commonly known to an expert in organic synthesis.
- the present invention further provides pharmaceutical compositions comprising a compound of formula (I), or a pharmaceutically acceptable stereoisomer, salt, solvate or complex thereof, or an isotopically labeled derivative thereof, or a prodrug thereof; and one or more pharmaceutically acceptable excipients or vehicles.
- the pharmaceutically acceptable carrier must be acceptable in the sense of being compatible with the other ingredients of the composition and not harmful to the recipient thereof.
- Said pharmaceutically acceptable carrier can be selected from among organic and inorganic materials that are used in pharmaceutical formulations and which are incorporated as analgesic agents, pH regulators, binders, disintegrants, diluents, emulsifiers, fillers, glidants, solubilizers, stabilizers, suspending agents, tonicity agents and thickeners.
- Pharmaceutical additives such as antioxidants, agents may also be added. aromatics, dyes, aroma enhancing agents, preservatives and sweeteners.
- Examples of pharmaceutically acceptable carriers include, among others, carboxymethyl cellulose, crystalline cellulose, glycerin, gum arabic, lactose, magnesium stearate, methyl cellulose, saline, sodium alginate, sucrose, starch, talc and water.
- the pharmaceutical formulations of the present invention are prepared by procedures well known in the pharmaceutical art.
- the compounds of formula (I) are mixed with a pharmaceutically acceptable carrier or carrier, such as a suspension or solution.
- a pharmaceutically acceptable carrier or carrier such as a suspension or solution.
- the choice of vehicle is determined by the solubility and chemical nature of the compounds, the route of administration chosen and the standard pharmaceutical practice.
- the administration of the compounds or compositions of the present invention to a human or animal subject may be by any known procedure including, without limitation, oral administration, sublingual or oral administration, parenteral administration, transdermal absorption, via nasal inhalation or instillation, vaginal, rectal and intramuscular administration.
- administration is performed parenterally, such as by subcutaneous injection, intramuscular injection, intraperitoneal injection, intravenous injection.
- parenteral administration the compounds of the invention are combined with a sterile aqueous solution that is isotonic with the subject's blood.
- a sterile aqueous solution that is isotonic with the subject's blood.
- Such a formulation is prepared by dissolving the solid active ingredient in water containing physiologically compatible substances, such as sodium chloride, glycine and the like, and having a buffered pH compatible with physiological conditions.
- Said formulation is presented in single or multiple dose containers, such as ampoules or closed vials.
- the formulation of the compounds of the invention may be presented in the form of capsules, tablets, powders, granules, or as a suspension or solution.
- Said formulation may include conventional additives, such as lactose, mannitol, starch, etc .; binders, such as crystalline cellulose, cellulose derivatives, gum arabic, corn starch or gelatins; disintegrants, such as corn starch and starch potato or sodium carboxymethyl cellulose; lubricants, such as talc or magnesium stearate.
- the compounds of the present invention have proved suitable for modulating RyR receptors that regulate the function of calcium in animal or human cells, so that they are capable of treating or preventing disorders or diseases associated with the deregulation of intracellular calcium caused primarily as a consequence. of dysfunction of RyR receptors.
- the term "deregulation of intracellular calcium” means an abnormal regulation of calcium levels and calcium fluxes in cells.
- an increase in the intracellular concentration of calcium (Ca 2+ ) under resting conditions contributes to the damage of toxic muscle cells (myofibers) and the simultaneous activation of Ca 2 + -dependent proteases, such as calpain.
- Ca 2 + -dependent proteases such as calpain. Since the activity of calpain is increased in necrotic muscle fibers of mdx mice and calpain dysfunction contributes to myodistrophy of the waist and extremities, the prevention of calcium-dependent protease activity by inhibiting intracellular elevations of Ca 2+ It allows to avoid muscular atrophy and, therefore, to treat diseases such as Duchenne's myodystrophy or Becker's myodistrophy.
- RyR receptors that regulate intracellular calcium function include RyRl, RyR2 and RyR3, as well as a RyR protein or a RyR analog.
- a RyR analog refers to a functional variant of RyR protein with biological activity that has a homology of 60% or higher in the amino acid sequence with the RyR protein.
- biological activity of RyR means the activity of the protein or peptide that demonstrates an ability to physically associate with, or bind to, FKBP 12 (calstabine-1) in the case of RyRl and RyR3, and FKBP12.6 (calstabine-2) in the case of RyR2 under the conditions of the tests described herein.
- FKBP linked to RyR refers to FKBP 12 linked to RyRl (calstabine-1), FKBP 12.6 linked to RyR2 (calstabine-2) and FKBP 12 linked to RyR3 (casltabine-1).
- a decrease in the level of FKBP bound to RyR in the cells of a subject is limited or avoided when said decrease is, in any case, stopped, hindered, impeded, obstructed or reduced by the administration of the compounds of the invention, so that the level of FKBP bound to RyR in the cells of a subject is higher than it would otherwise be in the absence of the administered compound.
- the level of FKBP bound to RyR in a subject is detected by standard tests or techniques known to one skilled in the art, such as immunological techniques, hybridization analysis, immunoprecipitation, Western blot analysis, fluorescence imaging techniques and / or detection. of radiation, as well as any other as disclosed in the experimental part of this document.
- the decrease in the level of FKBP (calstabine) bound to RyR occurs as a result of subjecting the cells of a subject to nitro-oxidative stress.
- the experimental tests carried out with the compounds of the invention have shown that they allow to minimize the degenerative effects of nitro-oxidative stress on healthy human myotubes through an increase in the affinity of the RyR1 -calstabine-1 interaction.
- the compounds of the invention avoid disorders or conditions that involve the modulation of RyR receptors or the increase of intracellular calcium, thus allowing the levels thereof to be regularized.
- disorders or conditions include skeletal muscle disorders and diseases (related to RyRl modulation), disorders and heart diseases (related to the modulation of RyR2) and disorders and diseases of the nervous system (related to the modulation of RyRl, RyR2 or RyR3).
- a further aspect of the present invention relates to the use of the compounds of formula (I), or a pharmaceutically acceptable stereoisomer, salt, solvate or complex thereof, or an isotopically labeled derivative thereof, or a prodrug thereof.
- a medicament aimed at the treatment and / or prevention of disorders and diseases of skeletal muscle, disorders and cardiac diseases and disorders and diseases of the nervous system.
- skeletal muscle disorders and diseases are selected from muscular dystrophies, congenital myopathies, metabolic myopathies and muscular atrophy.
- said skeletal muscle disorder or disease is Duchenne muscular dystrophy or Becker muscular dystrophy.
- cardiac disorders and diseases are selected from heart failure, cardiac ischemia, cardiac arrhythmias and cardiomyopathies.
- disorders and diseases of the nervous system are selected from brain accident, Alzheimer's disease, frontotemporal dementia and cognitive impairment.
- the compounds according to variant (A) of the present invention are those used in the preparation of a medicament for the treatment of skeletal muscle disorders and diseases, as well as for the treatment of cardiac disorders and diseases, such as those described. previously.
- the compounds according to variant (B) of the present invention are those used in the preparation of a medicament for the treatment of disorders and diseases of the nervous system as described above.
- a further aspect of the present invention relates to a compound of formula (I), or a pharmaceutically acceptable stereoisomer, salt, solvate or complex thereof, or an isotopically labeled derivative thereof, or a prodrug thereof, for use in the treatment and / or prevention of disorders and diseases of the skeletal muscle, disorders and heart disease and disorders and diseases of the nervous system.
- Another aspect of the invention is directed to a method for the treatment and / or prevention of skeletal muscle disorders and diseases, disorders and heart diseases and disorders and diseases of the nervous system, which comprises administration to a patient in need of an amount Therapeutically effective of a compound of formula (I), or a pharmaceutically acceptable stereoisomer, salt, solvate or complex thereof, or an isotopically labeled derivative thereof, or a prodrug thereof.
- Therapeutically effective should be understood as sufficient to achieve beneficial or desired results, the preventive and / or therapeutic response being, avoiding or substantially mitigating unwanted side effects.
- the compounds of the present invention are administered to a subject in an amount effective to modulate abnormal intracellular calcium concentrations.
- This amount can easily be determined by an expert in the area using known procedures.
- the release of intracellular calcium through RyR channels can be quantified using calcium-sensitive fluorescent dyes, such as Fluo-3 or Fura-2, and monitoring calcium-dependent fluorescence signals with a photomultiplier tube and software adequate (Brillantes, et al. Cell, 1994, 77, 513-523, "Stabilization of calcium relay channel (ryanodine receptor) f nction by FK506-binding protein"; Gillo, et al. Blood, 1993, 81, 783-792 ).
- the concentration of the compounds of the invention in serum of a human or animal subject can be determined following methods known in the art (Thebis, M. et al. Drug Test. Analysis 2009, 1, 32-42 "Screening for the calstabin-ryanodine complex stabilizers receiver JTV-519 and S-107 in doping control analysis ").
- the administered amount of compounds of Formula (I) that is effective in limiting or preventing abnormal levels of intracellular calcium will depend on the relative efficacy of the compound chosen, the severity of the disorder treated and the weight of the affected.
- the compounds will be administered one or more times a day, for example 1, 2, 3 or 4 times daily, with total typical daily doses in the range of approximately, between 1 mg / kg / day and 100 mg / kg / day, and more preferably between 10 mg / kg / day and 40 mg / kg / day, or an amount sufficient to achieve serum levels between approximately 1 ng / mL and 500 ng / mL.
- the compounds of Formula (I) can be used alone, in combination with each other, or in combination with other drugs that have therapeutic activity including, but not limited to, mRNA exon skip enhancers, gene transcription modulators, diuretics, anti coagulants, platelet agents, antiarrhythmics, inotropic agents, chronotropic agents, ⁇ and ⁇ blockers, angiotensin inhibitors and vasodilators.
- drugs may be part of the same composition, or be provided as a separate composition, for administration at the same time or at a different time.
- the present invention also includes an in vitro method for determining the ability of a compound to modulate intracellular calcium levels and prevent dissociation of calstabine from the RyR protein complex, wherein said method comprises: (a) obtaining or generating a cell culture containing receptors RyR; (b) contacting the cells with the compound to be tested; (c) exposing the cells to one or more known conditions that alter intracellular calcium regulation or generate post-translational modifications in the RyR receptor; (d) determine if said compound modulates intracellular calcium levels; and (e) determining whether said compound limits or prevents the dissociation of calstabine from the RyR protein complex.
- the conditions that alter intracellular calcium regulation or generate post-translational modifications in the RyR receptor are oxidative stress or nitrosative stress.
- the present invention also contemplates a method of diagnosing a disorder or disease, wherein said method comprises: obtaining a sample of tissue or cells from a subject containing RyR receptors;
- the compound of formula (I) employed in the diagnostic method is a compound according to variant (C) of the present invention.
- the tissue sample is a muscle tissue sample.
- the disorder or disease to be diagnosed is a skeletal muscle disorder or disease.
- the disorder or disease to be diagnosed is a heart disease or disorder.
- the disorder or disease to be diagnosed is a disorder or disease of the nervous system.
- Measures of increased RyR and calstabine interaction and of decreased intracellular calcium levels can be performed using techniques known to an expert, such as immunoprecipitation, in situ proximity ligation assays (PLA) and real-time calcium imaging using fluorescent probes
- Example 2 The procedure of Example 1 was followed, starting with l- (3-methoxyphenylthio) -2-propyne (2.00 mmol, 356 mg) and methyl azidoacetate (2.00 mmol, 230 mg). Rdto: 537 mg (88%). Yellowish oil.
- IR (cm -1 ): 2953, 2837 (CH), 1749 (C 0), 1220, 1180 (triazole).
- EXAMPLE 8 (R) -l- (1-Methoxycarb onyl-2-methyl-propyl) -4- [3 - (methoxy) phenylthiomethyl-lH- 1.2.3-triazole.
- Example 1 The procedure of Example 1 was followed, starting with l- (3-methoxyphenylthio) -2-propyne (2.00 mmol, 384 mg) and methyl 2-azidoisobutyrate (2.00 mmol, 386 mg). Rdto: 258 mg (40%). Yellowish oil.
- EXAMPLE 10 1 - (2-Hydroxyethyl) -4- [4- (methoxy) phenylthiomethyl- ⁇ H- 1.2.3-triazole.
- Example 1 The procedure of Example 1 was followed, starting with l- (4-methoxyphenylthio) -2-propyne (2.00 mmol, 384 mg) and 2-azidoethanol (2.00 mmol, 174 mg). Rdto: 520 mg (98%). Yellowish oil.
- Lithium hydroxide monohydrate (2.00 mmol, 84 mg) was added to a solution of 1- methoxycarbonylmethyl-4- [4- (methoxy) phenylthiomethyl] -lH-1, 2,3-triazole (1.00 mmol, 305 mg, Example 1) in THF / H 2 0 (1: 1, 8 mL) and the resulting mixture was stirred at room temperature for one hour. The organic solvent was evaporated, the resulting aqueous mixture was acidified with 1M HCl, and the solution was extracted with EtOAc (2 x 10 mL). The combined organic phases were dried (MgSO 4 ) and the solvent was evaporated under reduced pressure. Rdto: 158 mg (54%). White solid.
- EXAMPLE 12 1-Carboxymethyl-4- [3- (methoxy) phenylthiomethyl-lH-1.2.3-triazole.
- Example 1 1 The procedure of Example 1 1 was followed, starting from (R) -l- (l-methoxycarbonyl-2-phenylethyl) -4- [3- (methoxy) phenylthiomethyl] -lH-1, 2,3-triazole (1, 00 mmol, 383 mg, example 4). Rdto: 280 mg (76%). White solid. Mp: 78-86 ° C.
- the NMR data were identical to those in example 13.
- EXAMPLE 17 (S) - 1 - (1-Carboxy-2-methylpropyl) -4- [3 - (methoxy) phenylthiomethyl-IH-1.2.3-triazole.
- EXAMPLE 19 1 - (1-Carboxy-1-methyl ethyl) -4- [3 - (methoxy) phenylthiomethyl-IH- 1.2.3 -triazole.
- EXAMPLE 20 l- [2- (N.N-Dimethylamino) etill-4- [4- (methoxy) phenylthiomethyl-lH-1.2.3-triazole.
- Triethylamine (8.80 mmol, 1.22 mL) and mesyl chloride (4.39 mmol, 0.34 mL) were successively added over a solution of l- (2-hydroxyethyl) -4- [4- (methoxy) phenylthiomethyl] - 1 H-1, 2,3-triazole (2.92 mmol, 776 mg, example 10) in anhydrous THF (16 mL) cooled to 0 ° C under a nitrogen atmosphere. The reaction mixture was stirred at room temperature overnight.
- EXAMPLE 21 l-Methoxycarbonylmethyl-4- (phenylsulfinylmethyl) -lH-1.2.3-triazole.
- EXAMPLE 22 l-Carboxymethyl-4- [3- (methoxy) phenylsulfonylmethyl-lH-1.2.3-triazole.
- EXAMPLE 24 Biological tests of in vitro toxicity in human cells.
- EXAMPLE 25 In vitro assays to determine intracellular calcium levels in mouse muscle fibers.
- Fibers isolated from the mouse short digital flexor muscle were cultured overnight in the presence or absence of AFD and AFIK2 compounds at a concentration of 150 nM. Basal intracellular calcium levels were evaluated by incubating the fibers with the Fura 2-AM ratiometric fluorochrome (4 ⁇ ) and pluronic acid (0.02%) for 30 minutes at 37 ° C, in the culture medium. The fibers were visualized with a high resolution digital camera and the intracellular [Ca 2+ ] was estimated by the excitation ratio 340 nm / 380 nm.
- Figure 2 shows the in vitro effect of AFD and AFIK2 compounds on intracellular levels of calcium at rest in the aforementioned mouse muscle fibers.
- dystrophic fibers that were not treated showed a significant increase in calcium levels compared to control fibers (CTRL).
- CTRL control fibers
- AFD 1 and AFIK2 rescued intracellular calcium levels to control levels demonstrating the ability to reverse the increases in intracellular calcium observed in muscle fibers.
- the compounds according to the invention carry out this reversal through a mechanism that involves modulation of RyR channels.
- EXAMPLE 26 In vitro assays on the interaction of RyRl-calstabine 1
- This test was carried out in human myotubes LHCN-M2 control after 9 days in differentiation medium. Said myotubes were pre-treated for 12 hours with the compounds AHK1 and AHK2 at a concentration of 150 nM. After the treatment, the myotubes were subjected to nitro-oxidative stress by peroxitrites by the addition of SIN1 (5 mM) for 30 minutes.
- the colocalization of RyRl-calstabine was analyzed using the in situ proximity ligation technique (PLA in situ) for which the Sigma Duolink II Red Fluorescence Kit was used, and specific antibodies against RyRl and calstabine 1. This technique allows detect the exact location of two antigens that are less than 40nm from each other.
- PPA in situ the in situ proximity ligation technique
- 3 photographs were quantified for each condition with approximately 9 myotubes per field, using Image J software (http: // r sb. Inf o. Nor H. gov / ij / dowrs 1 oad. ht mi). In each image, the colocalization area was normalized with the myosin expression area, which was determined by immunofluorescence with a specific fluorescein-conjugated antibody.
- the compounds AHK1 and AHK2 according to the invention have the capacity to partially recover the decrease in the interaction of RyRl-calstabinal in cultures of healthy human myotubes after being subjected to nitro-oxidative stress.
- the analysis of the RyRl-Calstl interaction by means of the PLA technique showed that in the presence of SIN1 the dissociation of the RyRl-Calstl complex occurs and that said dissociation can be partially prevented by pretreatment with the compounds AHK1 and AHK2.
- the quantification of the PLA images with ImageJ is shown, while in the lower panel representative images of PLA of each condition are shown, where the points represent the RyRl-Calstl interaction (calibration bar 50 ⁇ ).
- the compounds tested according to the invention not only improve the functionality of Duchenne or Becker dystrophic myotubes, but also minimize the degenerative effects of nitro-oxidative stress on healthy human myotubes through an increase in the affinity of the RyRl-calstabinal interaction. According to these results, the compounds of the invention may be useful as therapeutic agents against diseases caused by the decrease in RyR-calstabinal affinity under conditions of nitro-oxidative stress.
- mice One month old male mdx dystrophic mice supplied by Jackson Laboratory (http s: // www j ax. Org / strain / 001801) were used. Biological assays to measure the effect of Ahulken compounds (AHK) on muscle function were performed with mice one month old, while in vivo tests to determine the effect on the heart and CNS were performed with mice four months old One month old mice were treated with compound AHK1 or compound AHK2 for 5 weeks, where said compounds were administered in the drinking water at a concentration of 0.25 mg / mL. Weekly, the muscular strength of the front legs was measured using a grip strength meter and the value obtained was normalized by the animal's body weight.
- Ahulken compounds AHK
- the anterior tibial muscle was obtained, which was processed for later biochemical and immunohistological analysis to determine the degree of muscle damage.
- Regeneration derived from cell death was determined in muscle cryosections by quantifying the percentage of central nuclei, using standard immunofluorescence techniques to detect collagen IV and cell nuclei.
- Figure 5 shows representative cryostat cuts of diaphragms of control mice and of dystrophic mice marked to see collagen IV and DAPI to see nuclei.
- the 5-week treatment of mdx mice with AHK1 and AHK2 significantly reduced the percentage of central nuclei, which demonstrates the ability of said compounds to reduce histopathological markers of muscular dystrophy after 5 weeks of treatment.
- the biochemical analysis of the tibialis anterior muscle was performed by RNA extraction and analysis of the expression pattern in control mice, in mdx mice and in mice subjected to the different treatments.
- the RT2 Profiler PCR Array specific to human skeletal muscle, myogenesis and myopathy (PAHS-099Z, QIAGEN) was used, using cDNA mixtures of at least 3 mice per group.
- the expression profile of 84 genes involved in pathophysiological mechanisms of skeletal muscle was analyzed.
- the experiments were performed on the 7300 Real-Time PCR (Applied Biosystems) and the results obtained were analyzed using the QIAGEN online software
- the results show that the compounds according to the invention show capacity to reduce by half the number of overexpressed genes in mdx dystrophic muscle.
- Genes likely to be modulated by the AHK compounds include, but are not limited to, Aktl, Bcl2, Casp3, Cast, Cav3, Cryab, Ctnnbl, Dagl, Des, Dysf, Foxo3, Igfbp3, Igfbp5, Ikbkb, Mapk3, Myodl, Nfkbl, Ppargclb, Prkaal, Rpsókbl, Utr, Casp3, Igf2, Illb, 116, Lmna, Mmp9, Myog, Tgfbl, Tnncl and Tnntl.
- Aktl, Illb, Mapk3, Mmp9 and Utr are genes related to skeletal muscle loss or atrophy.
- four-month-old mice were treated for 5 weeks with the compound AHK2 in the drinking water at a concentration of 0.25 mg / mL.
- Four-month-old mdx mice show an exacerbated defensive response after acute stress that is independent of motor, cardiac and respiratory deficits, and that is controlled by central mechanisms (Figure 7). Acute stress was performed by manual immobilizations for 15 seconds, in a position that is usually used to perform intraperitoneal injections.
- mice After acute stress, the mice are monitored for 1 minute and the% of freezing time, or periods of tonic immobility of at least 1 second with a 90% immobility sensitivity is calculated. No differences were observed in the freezing of non-stressed mice, indicating that the exacerbated defensive response shown by mdx mice is independent of motor deficits.
- the treatment of AHK2 for 5 weeks significantly improves the CNS phenotype of mdx mice related to an exacerbated defensive response.
- the myocardium of the four month old mdx dystrophic mice is very susceptible to mechanical stress and the isoproterenol compound induces cardiomyopathy in these mice (Figure 8).
- the integrity of the cardiomyocyte sarcolemma was determined by measuring the uptake of the Evans Blue dye, which accumulates in the cardiomyocytes that have membrane damage.
- Evans Blue was administered 24 hours before the extraction of the hearts, at a concentration of 10 mg / ml by intraperitoneal injection (10 ul / g body weight).
- the damage with isoproterenol was performed by 3 sequential intraperitoneal injections of beta-i soproterenol (350 ng / g body weight), after 18, 20 and 22 h of the administration of Evans Blue to determine the degree of muscle damage.
- Regeneration derived from cell death was determined in muscle cryosections by quantifying the percentage of central nuclei, using standard immunofluorescence techniques to detect collagen IV and cell nuclei.
- Figure 8 shows cryostat sections representative of hearts of control mice and dystrophic mice injected with Evans Blue to see the cardiac damage generated by isoproterenol.
- the 5-week treatment of mdx mice with AFIK2 increases the integrity of the cardiomyocyte sarcolemma of mdx mice and protects the myocardium from isoproterenol-induced damage, indicating that said compound reaches the heart muscle, is able to modulate the receptor of ryanodine type 2 (RyR2) and is effective in vivo to prevent cardiomyopathies.
- RyR2 ryanodine type 2
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| MX2018014414A MX381545B (es) | 2016-05-24 | 2017-05-23 | Triazoles para la regulación de la homeostasis de calcio intracelular. |
| PL17735609T PL3466933T3 (pl) | 2016-05-24 | 2017-05-23 | Triazole do regulacji wewnątrzkomórkowej homeostazy wapnia |
| IL263168A IL263168B2 (en) | 2016-05-24 | 2017-05-23 | Triazoles for the regulation of intracellular calcium homeostasis |
| CN201780045689.1A CN109563056B (zh) | 2016-05-24 | 2017-05-23 | 用于调控胞内钙稳态的三唑 |
| AU2017270485A AU2017270485B2 (en) | 2016-05-24 | 2017-05-23 | Triazoles for regulating intracellular calcium homeostasis |
| US16/304,041 US11377427B2 (en) | 2016-05-24 | 2017-05-23 | Triazoles for regulating intracellular calcium homeostasis |
| JP2019514862A JP6983875B2 (ja) | 2016-05-24 | 2017-05-23 | 細胞内カルシウムホメオスタシスを調節するためのトリアゾール |
| DK17735609.4T DK3466933T3 (da) | 2016-05-24 | 2017-05-23 | Triazoler til regulering af intracellulær calcium-homeostase |
| RU2018141584A RU2753509C2 (ru) | 2016-05-24 | 2017-05-23 | Триазолы для регуляции гомеостаза внутриклеточного кальция |
| ES17735609T ES2853701T3 (es) | 2016-05-24 | 2017-05-23 | Triazoles para la regulación de la homeostasis de calcio intracelular |
| EP17735609.4A EP3466933B1 (en) | 2016-05-24 | 2017-05-23 | Triazoles for regulating intracellular calcium homeostasis |
| CA3025436A CA3025436C (en) | 2016-05-24 | 2017-05-23 | Triazoles for regulating intracellular calcium homeostasis |
| HRP20210211TT HRP20210211T1 (hr) | 2016-05-24 | 2017-05-23 | Triazoli namijenjeni reguliranju homeostaze unutarstaničnog kalcija |
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| WO2021162054A1 (ja) * | 2020-02-10 | 2021-08-19 | 学校法人順天堂 | 2型リアノジン受容体活性抑制剤 |
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| WO2023247712A1 (en) | 2022-06-23 | 2023-12-28 | Miramoon Pharma, S.L. | Triazoles for use in the treatment of ocular diseases |
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| CA3025436C (en) | 2024-02-20 |
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| JP2019520423A (ja) | 2019-07-18 |
| US11377427B2 (en) | 2022-07-05 |
| EP3466933B1 (en) | 2020-12-02 |
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