WO2007138304A1 - 1, 3, 4 -oxadiazole derivatives as dgat1 inhibitors - Google Patents
1, 3, 4 -oxadiazole derivatives as dgat1 inhibitors Download PDFInfo
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- WO2007138304A1 WO2007138304A1 PCT/GB2007/001981 GB2007001981W WO2007138304A1 WO 2007138304 A1 WO2007138304 A1 WO 2007138304A1 GB 2007001981 W GB2007001981 W GB 2007001981W WO 2007138304 A1 WO2007138304 A1 WO 2007138304A1
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- 0 *C(CC1)CCC1OC(CCC1N)=CC1F Chemical compound *C(CC1)CCC1OC(CCC1N)=CC1F 0.000 description 1
- MIVQZQYMEBYQQT-UHFFFAOYSA-N CC(C1)(C=C2)C1=CC=C2Nc1nnc(C(O)=O)[o]1 Chemical compound CC(C1)(C=C2)C1=CC=C2Nc1nnc(C(O)=O)[o]1 MIVQZQYMEBYQQT-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D271/00—Heterocyclic compounds containing five-membered rings having two nitrogen atoms and one oxygen atom as the only ring hetero atoms
- C07D271/02—Heterocyclic compounds containing five-membered rings having two nitrogen atoms and one oxygen atom as the only ring hetero atoms not condensed with other rings
- C07D271/10—1,3,4-Oxadiazoles; Hydrogenated 1,3,4-oxadiazoles
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D271/00—Heterocyclic compounds containing five-membered rings having two nitrogen atoms and one oxygen atom as the only ring hetero atoms
- C07D271/02—Heterocyclic compounds containing five-membered rings having two nitrogen atoms and one oxygen atom as the only ring hetero atoms not condensed with other rings
- C07D271/10—1,3,4-Oxadiazoles; Hydrogenated 1,3,4-oxadiazoles
- C07D271/113—1,3,4-Oxadiazoles; Hydrogenated 1,3,4-oxadiazoles with oxygen, sulfur or nitrogen atoms, directly attached to ring carbon atoms, the nitrogen atoms not forming part of a nitro radical
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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
- A61K31/4245—Oxadiazoles
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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
- A61P3/04—Anorexiants; Antiobesity agents
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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
- A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
- A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P7/00—Drugs for disorders of the blood or the extracellular fluid
- A61P7/12—Antidiuretics, e.g. drugs for diabetes insipidus
Definitions
- the present invention relates to compounds which inhibit acetyl CoA(acetyl coenzyme A):diacylglycerol acyltransferase (DGATl) activity, processes for their preparation, pharmaceutical compositions containing them as the active ingredient, methods for the treatment of disease states associated with DGATl activity, to their use as medicaments and to their use in the manufacture of medicaments for use in the inhibition of DGATl in warm-blooded animals such as humans.
- DGATl acetyl CoA(acetyl coenzyme A):diacylglycerol acyltransferase
- this invention relates to compounds useful for the treatment of type II diabetes, insulin resistance, impaired glucose tolerance and obesity in warm-blooded animals such as humans, more particularly to the use of these compounds in the manufacture of medicaments for use in the treatment of type II diabetes, insulin resistance, impaired glucose tolerance and obesity in warm-blooded animals such as humans.
- DGAT Acyl CoA:diacylglycerol acyltransferase
- DGAT genes Two DGAT genes have been cloned and characterised. Both of the encoded proteins catalyse the same reaction although they share no sequence homology.
- the DGATl gene was identified from sequence database searches because of its similarity to acyl CoAxholesterol acyltransferase (ACAT) genes. [Cases et al (1998) Identification of a gene encoding an acyl CoA: diacylglycerol acyltransferase, a key enzyme in triacylglycerol synthesis. Proc. Natl. Acad. Sci. USA 95: 13018-13023].
- DGATl activity has been found in many mammalian tissues, including adipocytes.
- DGATl is known to be significantly up-regulated during adipocyte differentiation.
- DGATl knockout ⁇ Dgatl '1' mice are viable and capable of synthesizing triglycerides, as evidenced by normal fasting serum triglyceride levels and normal adipose tissue composition.
- Dgatl '1' mice have less adipose tissue than wild-type mice at baseline and are resistant to diet-induced obesity.
- Metabolic rate is -20% higher in Dgatl ⁇ ! ⁇ mice than in wild-type mice on both regular and high-fat diets [Smith et al (2000) Obesity resistance and multiple mechanisms of triglyceride synthesis in mice lacking DGAT.
- Dgatl '1' mice When Dgatl '1' mice are crossed with ob/ob mice, these mice exhibit the ob/ob phenotype [Chen et al (2002) Increased insulin and leptin sensitivity in mice lacking acyl CoA:diacylglycerol acyltransferase J. Clin. Invest. 109:1049-1055] indicating that the Dgatl '1' phenotype requires an intact leptin pathway. When Dgatl '1' mice are crossed with Agouti mice a decrease in body weight is seen with normal glucose levels and 70% reduced insulin levels compared to wild type, agouti or ob/ob/ Dgatl '1' mice.
- each R is independently selected from fluoro, chloro, cyano, methyl, ethyl, methoxy, ethoxy, trifluoromethyl, trifluoromethoxy and difluoromethoxy; n is 1, 2 or 3.
- formula (I) includes compounds wherein the carboxy group and the oxy link are in either a cis or a trans arrangement across the cyclohexyl ring, in relation to each other.
- a compound of formula (I) may form stable acid or basic salts, and in such cases administration of a compound as a salt may be appropriate, and pharmaceutically acceptable salts may be made by conventional methods such as those described following.
- Suitable pharmaceutically-acceptable salts include acid addition salts such as methanesulfonate, tosylate, ⁇ -glycerophosphate, fumarate, hydrochloride, citrate, maleate, tartrate and (less preferably) hydrobromide. Also suitable are salts formed with phosphoric and sulfuric acid.
- suitable salts are base salts such as a Group (I) (alkali metal) salt, a Group (II) (alkaline earth) metal salt, an organic amine salt for example triethylamine, morpholine, JV-methylpiperidine, iV-ethylpiperidine, procaine, dibenzylamine, JV,iV-dibenzylethylamine, tris-(2-hydroxyethyl)amine, JV-methyl d-glucaniine and amino acids such as lysine.
- a Group (I) (alkali metal) salt such as a Group (I) (alkali metal) salt, a Group (II) (alkaline earth) metal salt
- an organic amine salt for example triethylamine, morpholine, JV-methylpiperidine, iV-ethylpiperidine, procaine, dibenzylamine, JV,iV-dibenzylethylamine, tris-
- salts which are less soluble in the chosen solvent may be preferred whether pharmaceutically-acceptable or not.
- Prodrugs of compounds of formula (I), or salts thereof are also within the scope of the invention.
- Various forms of prodrugs are known in the art.
- prodrug derivatives see: a) Design of Prodrugs, edited by H. Bundgaard, (Elsevier, 1985) and Methods in Enzymology, Vol. 42, p. 309-396, edited by K. Widder, et al. (Academic Press, 1985); b) A Textbook of Drug Design and Development, edited by Krogsgaard-Larsen and
- H. Bundgaard Chapter 5 "Design and Application of Prodrugs", by H. Bundgaard p. 113-191 (1991); c) H. Bundgaard, Advanced Drug Delivery Reviews, 8, 1-38 (1992); d) H. Bundgaard, et al., Journal of Pharmaceutical Sciences, 77, 285 (1988); and e) N. Kakeya, et ⁇ /., Chem Pharm Bull, 32, 692 (1984).
- prodrugs examples include in vivo cleavable esters of a compound of the invention.
- An in vivo cleavable ester of a compound of the invention containing a carboxy group is, for example, a pharmaceutically-acceptable ester which is cleaved in the human or animal body to produce the parent acid.
- Suitable pharmaceutically-acceptable esters for carboxy include (l- ⁇ C)alkyl esters, for example methyl or ethyl; (l-6C)alkoxymethyl esters, for example methoxymethyl; (1- 6C)alkanoyloxymethyl esters, for example pivaloyloxymethyl; phthalidyl esters; (3- 8C)cycloalkoxycarbonyloxy(l-6C)alkyl esters, for example 1-cyclohexylcarbonyloxy ethyl; l,3-dioxolan-2-ylmethyl esters, for example 5-methyl-l,3-dioxolan-2-ylmethyl; (l-6C)alkoxycarbonyloxy ethyl esters, for example 1-methoxycarbonyloxy ethyl; aminocarbonylmethyl esters and mono- or di- N-((l- 6C)alkyl) versions thereof, for example N,N-dimethylaminocarbonylmethyl
- An in vivo cleavable ester of a compound of the invention containing a hydroxy group is, for example, a pharmaceutically-acceptable ester which is cleaved in the human or animal body to produce the parent hydroxy group.
- Suitable pharmaceutically acceptable esters for hydroxy include (l-6C)alkanoyl esters, for example acetyl esters; and benzoyl esters wherein the phenyl group may be substituted with aminomethyl or N- substituted mono- or di- (l- ⁇ C)alkyl aminomethyl, for example 4-aminomethylbenzoyl esters and 4-N,N-dimethylaminomethylbenzoyl esters.
- carboxy group and oxy links are in a trans configuration across the cyclohexyl ring, to give a compound of formula (IB):
- salts particularly pharmaceutically-acceptable salts of compounds of formulae (I), (IA) and (IB).
- pro-drags particularly in- vivo cleavable esters, of compounds of formulae (I), (IA) and (IB).
- salts particularly pharmaceutically-acceptable salts of pro-drugs of compounds of formulae (I), (IA) and (IB).
- substituents in compounds of formulae (I) 5 (IA) and (IB) are as follows. Such values may be used where appropriate with any of the other values, definitions, claims or embodiments defined hereinbefore or hereinafter.
- n 1, 2 or 3 and each R is fluoro.
- R is selected from fluoro and trifluoromethyl
- n 1 5) n is 2
- a compound of formula (I) and its salts may be prepared by any process known to be applicable to the preparation of chemically related compounds. Such processes, when used to prepare a compound of the formula (I), or a pharmaceutically-acceptable salt thereof, are provided as a further feature of the invention.
- the present invention also provides that the compounds of the formula (I) and salts thereof, can be prepared by a process a) to b) as follows (wherein all variables are as hereinbefore defined for a compound of formula (I) unless otherwise stated): a) reaction of an amine of formula (2) with a carboxylate salt of formula (3), wherein R p is (l-4C)alkyl group (such as methyl, ethyl, isopropy, or tert-butyl), followed by hydrolysis of the R p group;
- Compounds of formula (2) may be made by application of standard synthetic methods well known in the art.
- compounds of formula (2) may be prepared by reduction of a compound of formula (2A).
- Ester (5a) may be made by alkaline hydrolysis of ester (5a) as prepared using a published procedure (J. Het. Chem. 1977, 14, 1385-1388). Ester (5a) may be made by cyclisation of a compound of formula (5b) (where X is O or S) in a similar manner as described in process b) for compounds of formula (4).
- Compounds of formula (2) may be coupled with compounds of formula (3) under standard conditions for formation of amide bonds.
- an appropriate coupling reaction such as a carbodiimide coupling reaction performed with EDAC, optionally in the presence of DMAP, in a suitable solvent such as DCM, chloroform or DMF at room temperature.
- R p group may be removed by any process known in the art for ester hydrolysis.
- Process b) Compounds of formula (4) and (5b) where X is S may be made by reaction of an aminocarbonyl acylhydrazine or ethoxycarbonyl acylhydrazine with a thioisocyanate or thioisocyanate equivalent such as aminothiocarbonylimidazole in a suitable solvent such as DMF or MeCN at a temperature between 0 and 100 0 C.
- a suitable solvent such as DMF or MeCN
- reaction of an aniline with methyl chlorooxoacetate in the presence of pyridine in a suitable solvent such as DCM followed by reaction with hydrazine in a suitable solvent such as ethanol at a temperature between 0 and 100 0 C .
- the compound of formula (4) may then be cyclised using, for example agents such as carbonyldiimidazole, or tosyl chloride and a suitable base (such as triethylamine), under conditions known in the art.
- agents such as carbonyldiimidazole, or tosyl chloride and a suitable base (such as triethylamine), under conditions known in the art.
- Iso(thio)cyanates R 1 - NCX (where X is O or S) are commercially available or may be made by reaction of the acid chlorides R ⁇ NH 2 with for example (thio)phosgene or a (thio)phosgene equivalent followed by a suitable base (such as triethylamine).
- the R p group may be removed by any process known in the art for ester hydrolysis. It will be appreciated that certain of the various ring substituents in the compounds of the present invention, for example R, may be introduced by standard aromatic substitution reactions or generated by conventional functional group modifications either prior to or immediately following the processes mentioned above, and as such are included in the process aspect of the invention. Such reactions may convert one compound of the formula (I) into another compound of the formula (I).
- Such reactions and modifications include, for example, introduction of a substituent by means of an aromatic substitution reaction, reduction of substituents, alkylation of substituents and oxidation of substituents.
- the reagents and reaction conditions for such procedures are well known in the chemical art.
- aromatic substitution reactions include the introduction of a nitro group using concentrated nitric acid, the introduction of an acyl group using, for example, an acyl halide and Lewis acid (such as aluminium trichloride) under Friedel Crafts conditions; the introduction of an alkyl group using an alkyl halide and Lewis acid (such as aluminium trichloride) under Friedel Crafts conditions; and the introduction of a halogen group.
- modifications include the reduction of a nitro group to an amino group by for example, catalytic hydrogenation with a nickel catalyst or treatment with iron in the presence of hydrochloric acid with heating; oxidation of alkylthio to alkanesulfmyl or alkanesulfonyl.
- the necessary starting materials for the procedures such as those described above may be made by procedures which are selected from standard organic chemical techniques, techniques which are analogous to the synthesis of known, structurally similar compounds, techniques which are described or illustrated in the references given above, or techniques which are analogous to the above described procedure or the procedures described in the examples.
- the reader is further referred to Advanced Organic Chemistry, 5 th Edition, by Jerry March and Michael Smith, published by John Wiley & Sons 2001, for general guidance on reaction conditions and reagents.
- Protecting groups may be removed by any convenient method as described in the literature or known to the skilled chemist as appropriate for the removal of the protecting group in question, such methods being chosen so as to effect removal of the protecting group with minimum disturbance of groups elsewhere in the molecule.
- reactants include, for example, groups such as amino, carboxy or hydroxy it may be desirable to protect the group in some of the reactions mentioned herein.
- a suitable protecting group for a hydroxy group is, for example, an acyl group, for example an alkanoyl group such as acetyl, an aroyl group, for example benzoyl, a silyl group such as trimethylsilyl or an arylmethyl group, for example benzyl.
- the deprotection conditions for the above protecting groups will necessarily vary with the choice of protecting group.
- an acyl group such as an alkanoyl or an aroyl group may be removed, for example, by hydrolysis with a suitable base such as an alkali metal hydroxide, for example lithium or sodium hydroxide.
- a silyl group such as trimethylsilyl or SEM may be removed, for example, by fluoride or by aqueous acid; or an arylmethyl group such as a benzyl group may be removed, for example, by hydrogenation in the presence of a catalyst such as palladium-on-carbon.
- a suitable protecting group for an amino group is, for example, an acyl group, for example an alkanoyl group such as acetyl, an alkoxycarbonyl group, for example a methoxycarbonyl, ethoxycarbonyl or tert-butoxycarbonyl group, an arylmethoxycarbonyl group, for example benzyloxycarbonyl, or an aroyl group, for example benzoyl.
- the deprotection conditions for the above protecting groups necessarily vary with the choice of protecting group.
- an acyl group such as an alkanoyl or alkoxycarbonyl group or an aroyl group may be removed for example, by hydrolysis with a suitable base such as an alkali metal hydroxide, for example lithium or sodium hydroxide.
- a suitable base such as an alkali metal hydroxide, for example lithium or sodium hydroxide.
- an acyl group such as a t-butoxycarbonyl group may be removed, for example, by treatment with a suitable acid as hydrochloric, sulfuric or phosphoric acid or trifluoroacetic acid and an arylmethoxycarbonyl group such as a benzyloxycarbonyl group may be removed, for example, by hydrogenation over a catalyst such as palladium-on-carbon, or by treatment with a Lewis acid for example boron tris(trifluoroacetate).
- a suitable alternative protecting group for a primary amino group is, for example, a phthaloyl group which may be removed by treatment with an alkylamine, for example dimethylaminopropylamine or 2-hydroxyethylamine, or with hydrazine.
- a suitable protecting group for a carboxy group is, for example, an esterifying group, for example a methyl or an ethyl group which may be removed, for example, by hydrolysis with a base such as sodium hydroxide, or for example a t-butyl group which may be removed, for example, by treatment with an acid, for example an organic acid such as trifluoroacetic acid, or for example a benzyl group which may be removed, for example, by hydrogenation over a catalyst such as palladium-on-carbon.
- Resins may also be used as a protecting group.
- the protecting groups may be removed at any convenient stage in the synthesis using conventional techniques well known in the chemical art, or they may be removed during a later reaction step or work-up.
- an optically active form of a compound of the invention When an optically active form of a compound of the invention is required, it may be obtained by carrying out one of the above procedures using an optically active starting material (formed, for example, by asymmetric induction of a suitable reaction step), or by resolution of a racemic form of the compound or intermediate using a standard procedure, or by chromatographic separation of diastereoisomers (when produced). Enzymatic techniques may also be useful for the preparation of optically active compounds and/or intermediates.
- a pure regioisomer of a compound of the invention when required, it may be obtained by carrying out one of the above procedures using a pure regioisomer as a starting material, or by resolution of a mixture of the regioisomers or intermediates using a standard procedure.
- a pharmaceutical composition which comprises a compound of formula (I) as defined hereinbefore or a pharmaceutically-acceptable salt thereof, in association with a pharmaceutically-acceptable excipient or carrier.
- compositions of the invention may be in a form suitable for oral use (for example as tablets, lozenges, hard or soft capsules, aqueous or oily suspensions, emulsions, dispersible powders or granules, syrups or elixirs), for topical use (for example as creams, ointments, gels, or aqueous or oily solutions or suspensions), for administration by inhalation (for example as a finely divided powder or a liquid aerosol), for administration by insufflation (for example as a finely divided powder) or for parenteral administration (for example as a sterile aqueous or oily solution for intravenous, subcutaneous, intramuscular or intramuscular dosing or as a suppository for rectal dosing).
- oral use for example as tablets, lozenges, hard or soft capsules, aqueous or oily suspensions, emulsions, dispersible powders or granules, syrups or elixir
- compositions of the invention may be obtained by conventional procedures using conventional pharmaceutical excipients, well known in the art.
- compositions intended for oral use may contain, for example, one or more colouring, sweetening, flavouring and/or preservative agents.
- Suitable pharmaceutically acceptable excipients for a tablet formulation include, for example, inert diluents such as lactose, sodium carbonate, calcium phosphate or calcium carbonate, granulating and disintegrating agents such as corn starch or algenic acid; binding agents such as starch; lubricating agents such as magnesium stearate, stearic acid or talc; preservative agents such as ethyl or propyl p_-hydroxybenzoate, and anti-oxidants, such as ascorbic acid.
- Tablet formulations may be uncoated or coated either to modify their disintegration and the subsequent absorption of the active ingredient within the gastrointestinal tract, or to improve their stability and/or appearance, in either case, using conventional coating agents and procedures well known in the art.
- Compositions for oral use may be in the form of hard gelatin capsules in which the active ingredient is mixed with an inert solid diluent, for example, calcium carbonate, calcium phosphate or kaolin, or as soft gelatin capsules in which the active ingredient is mixed with water or an oil such as peanut oil, liquid paraffin, or olive oil.
- an inert solid diluent for example, calcium carbonate, calcium phosphate or kaolin
- water or an oil such as peanut oil, liquid paraffin, or olive oil.
- Aqueous suspensions generally contain the active ingredient in finely powdered form together with one or more suspending agents, such as sodium carboxymethylcellulose, methylcellulose, hydroxypropylmethylcellulose, sodium alginate, polyvinyl-pyrrolidone, gum tragacanth and gum acacia; dispersing or wetting agents such as lecithin or condensation products of an alkylene oxide with fatty acids (for example polyoxethylene stearate), or condensation products of ethylene oxide with long chain aliphatic alcohols, for example heptadecaethyleneoxycetanol, or condensation products of ethylene oxide with partial esters derived from fatty acids and a hexitol such as polyoxyethylene sorbitol monooleate, or condensation products of ethylene oxide with long chain aliphatic alcohols, for example heptadecaethyleneoxycetanol, or condensation products of ethylene oxide with partial esters derived from fatty acids and a hexitol such as polyoxyethylene sorbitol
- the aqueous suspensions may also contain one or more preservatives (such as ethyl or propyl p_-hydroxybenzoate, anti-oxidants (such as ascorbic acid), colouring agents, flavouring agents, and/or sweetening agents (such as sucrose, saccharine or aspartame).
- Oily suspensions may be formulated by suspending the active ingredient in a vegetable oil (such as arachis oil, olive oil, sesame oil or coconut oil) or in a mineral oil (such as liquid paraffin).
- the oily suspensions may also contain a thickening agent such as beeswax, hard paraffin or cetyl alcohol. Sweetening agents such as those set out above, and flavouring agents may be added to provide a palatable oral preparation. These compositions may be preserved by the addition of an anti-oxidant such as ascorbic acid.
- Dispersible powders and granules suitable for preparation of an aqueous suspension by the addition of water generally contain the active ingredient together with a dispersing or wetting agent, suspending agent and one or more preservatives. Suitable dispersing or wetting agents and suspending agents are exemplified by those already mentioned above. Additional excipients such as sweetening, flavouring and colouring agents, may also be present.
- the pharmaceutical compositions of the invention may also be in the form of oil-in- water emulsions.
- the oily phase may be a vegetable oil, such as olive oil or arachis oil, or a mineral oil, such as for example liquid paraffin or a mixture of any of these.
- Suitable emulsifying agents may be, for example, naturally-occurring gums such as gum acacia or gum tragacanth, naturally-occurring phosphatides such as soya bean, lecithin, an esters or partial esters derived from fatty acids and hexitol anhydrides (for example sorbitan monooleate) and condensation products of the said partial esters with ethylene oxide such as polyoxyethylene sorbitan monooleate.
- the emulsions may also contain sweetening, flavouring and preservative agents.
- Syrups and elixirs may be formulated with sweetening agents such as glycerol, propylene glycol, sorbitol, aspartame or sucrose, and may also contain a demulcent, preservative, flavouring and/or colouring agent.
- sweetening agents such as glycerol, propylene glycol, sorbitol, aspartame or sucrose, and may also contain a demulcent, preservative, flavouring and/or colouring agent.
- compositions may also be in the form of a sterile injectable aqueous or oily suspension, which may be formulated according to known procedures using one or more of the appropriate dispersing or wetting agents and suspending agents, which have been mentioned above.
- a sterile injectable preparation may also be a sterile injectable solution or suspension in a non-toxic parenterally-acceptable diluent or solvent, for example a solution in 1,3-butanediol.
- Compositions for administration by inhalation may be in the form of a conventional pressurised aerosol arranged to dispense the active ingredient either as an aerosol containing finely divided solid or liquid droplets.
- Conventional aerosol propellants such as volatile fluorinated hydrocarbons or hydrocarbons may be used and the aerosol device is conveniently arranged to dispense a metered quantity of active ingredient.
- the amount of active ingredient that is combined with one or more excipients to produce a single dosage form will necessarily vary depending upon the host treated and the particular route of administration.
- a formulation intended for oral administration to humans will generally contain, for example, from 0.5 mg to 2 g of active agent compounded with an appropriate and convenient amount of excipients which may vary from about 5 to about 98 percent by weight of the total composition.
- Dosage unit forms will generally contain about 1 mg to about 500 mg of an active ingredient.
- a compound of formula (I), (IA) and/or (IB) or a pharmaceutically acceptable salt thereof as defined hereinbefore for use in a method of treatment of the human or animal body by therapy.
- a further feature of the present invention is a compound of formula (I), (IA) and/or (IB) or a pharmaceutically-acceptable salt thereof for use as a medicament.
- this is a compound of formula (I), (IA) and/or (IB) or a pharmaceutically-acceptable salt thereof, for use as a medicament for producing an inhibition of DGATl activity in a warm-blooded animal such as a human being.
- this is a compound of formula (I), (IA) and/or (IB) or a pharmaceutically-acceptable salt thereof, for use as a medicament for treating diabetes mellitus and/or obesity in a warm-blooded animal such as a human being.
- a compound of formula (I), (IA) and/or (IB) or a pharmaceutically-acceptable salt thereof in the manufacture of a medicament for use in the treatment of diabetes mellitus and/or obesity in a warm-blooded animal such as a human being.
- a pharmaceutical composition which comprises a compound of formula (I), (IA) and/or (IB) as defined hereinbefore or a pharmaceutically-acceptable salt thereof, in association with a pharmaceutically-acceptable excipient or carrier for use in producing an inhibition of DGATl activity in an warm-blooded animal, such as a human being.
- a pharmaceutical composition which comprises a compound of formula (I), (IA) and/or (IB) as defined hereinbefore or a pharmaceutically-acceptable salt thereof, in association with a pharmaceutically-acceptable excipient or carrier for use in the treatment of diabetes mellitus and/or obesity in an warm-blooded animal, such as a human being.
- a method for producing an inhibition of DGATl activity in a warm-blooded animal, such as a human being in need of such treatment which comprises administering to said animal an effective amount of a compound of formula (I), (IA) and/or (IB) or a pharmaceutically-acceptable salt thereof as defined hereinbefore.
- a method of treating diabetes mellitus and/or obesity in a warm-blooded animal, such as a human being, in need of such treatment which comprises administering to said animal an effective amount of a compound of formula (I), (IA) and/or (IB) or a pharmaceutically-acceptable salt thereof as defined hereinbefore.
- a daily dose in the range of 1-50 mg/kg is employed.
- the daily dose will necessarily be varied depending upon the host treated, the particular route of administration, and the severity of the illness being treated.
- the optimum dosage may be determined by the practitioner who is treating any particular patient.
- a compound of the invention may therefore be useful for the prevention, delay or treatment of a range of disease states including diabetes mellitus, more specifically type 2 diabetes mellitus (T2DM) and complications arising there from (for example retinopathy, neuropathy and nephropathy), impaired glucose tolerance (IGT), conditions of impaired fasting glucose, metabolic acidosis, ketosis, dysmetabolic syndrome, arthritis, osteoporosis, obesity and obesity related disorders, (which include peripheral vascular disease, (including intermittent claudication), cardiac failure and certain cardiac myopathies, myocardial ischaemia, cerebral ischaemia and reperfusion, hyperlipidaemias, atherosclerosis, infertility and polycystic ovary syndrome); the compounds of the invention may also be useful for muscle weakness, diseases of the skin such as acne, various immunomodulatory diseases (such as psori), retinopathy, neuropathy and nephropathy), impaired glucose tolerance (IGT), conditions of
- the compounds of the present invention are of interest for the prevention, delay or treatment of diabetes mellitus and/or obesity and/or obesity related disorders.
- the compounds of the invention are used for prevention, delay or treatment of diabetes mellitus.
- the compounds of the invention are used for prevention, delay or treatment of obesity.
- the compounds of the invention are used for prevention, delay or treatment of obesity related disorders.
- the inhibition of DGATl activity described herein may be applied as a sole therapy or in combination with one or more other substances and/or treatments for the indication being treated. Such conjoint treatment may be achieved by way of the simultaneous, sequential or separate administration of the individual components of the treatment. Simultaneous treatment may be in a single tablet or in separate tablets.
- such conjoint treatment may be beneficial in the treatment of metabolic syndrome [defined as abdominal obesity (as measured by waist circumference against ethnic and gender specific cut-points) plus any two of the following: hypertriglyceridemia (> 150 mg/dl; 1.7mmol/l); low HDLc ( ⁇ 40 mg/dl or ⁇ 1.03mmol/l for men and ⁇ 50 mg/dl or 1.29 mmol/1 for women) or on treatment for low HDL (high density lipoprotein); hypertension (SBP > 130 mmHg DBP > 85 mmHg) or on treatment for hypertension; and hyperglycemia (fasting plasma glucose > 100 mg/dl or 5.6 mmol/1 or impaired glucose tolerance or pre-existing diabetes mellitus) - International Diabetes Federation & input from IAS/NCEP].
- hypertriglyceridemia > 150 mg/dl; 1.7mmol/l
- low HDLc ⁇ 40 mg/dl or ⁇ 1.03mmol/l for men and ⁇ 50 mg/dl or
- Such conjoint treatments may include the following main categories: 1) Anti-obesity therapies such as those that cause weight loss by effects on food intake, nutrient absorption or energy expenditure, such as orlistat, sibutramine and the like. 2) Insulin secretagogues including sulphonylureas (for example glibenclamide, glipizide), prandial glucose regulators (for example repaglinide, nateglinide);
- Agents that improve incretin action for example dipeptidyl peptidase IV inhibitors, and GLP-I agonists;
- Insulin sensitising agents including PPARgamma agonists (for example pioglitazone and rosiglitazone), and agents with combined PPARalpha and gamma activity;
- Agents that modulate hepatic glucose balance for example metformin, fructose 1, 6 bisphosphatase inhibitors, glycogen phopsphorylase inhibitors, glycogen synthase kinase inhibitors, glucokinase activators); 6) Agents designed to reduce the absorption of glucose from the intestine (for example acarbose);
- Agents designed to treat the complications of prolonged hyperglycaemia for example aldose reductase inhibitors);
- Anti- dyslipidaemia agents such as, HMG-CoA reductase inhibitors (eg statins);
- PPAR ⁇ -agonists for example, PPAR ⁇ -agonists (fibrates, eg gemfibrozil); bile acid sequestrants (cholestyramine); cholesterol absorption inhibitors (plant stanols, synthetic inhibitors); bile acid absorption inhibitors (IBATi) and nicotinic acid and analogues (niacin and slow release formulations);
- Antihypertensive agents such as, ⁇ -blockers (eg atenolol, inderal); ACE inhibitors (eg lisinopril); Calcium antagonists (eg. nifedipine); Angiotensin receptor antagonists (eg candesartan), ⁇ antagonists and diuretic agents (eg. furosemide, benzthiazide); 11) Haemostasis modulators such as, antithrombotics, activators of fibrinolysis and antiplatelet agents; thrombin antagonists; factor Xa inhibitors; factor Vila inhibitors); antiplatelet agents (eg. aspirin, clopidogrel); anticoagulants (heparin and Low molecular weight analogues, hirudin) and warfarin; 12) Agents which antagonise the actions of glucagon; and
- Anti-inflammatory agents such as non-steroidal anti-inflammatory drugs (eg. aspirin) and steroidal anti-inflammatory agents (eg. cortisone).
- non-steroidal anti-inflammatory drugs eg. aspirin
- steroidal anti-inflammatory agents eg. cortisone
- compounds of formula (I) and their pharmaceutically-acceptable salts are also useful as pharmacological tools in the development and standardisation of in vitro and in vivo test systems for the evaluation of the effects of inhibitors of DGATl activity in laboratory animals such as cats, dogs, rabbits, monkeys, rats and mice, as part of the search for new therapeutic agents.
- the in vitro assay to identify DGATl inhibitors uses human DGATl expressed in insect cell membranes as the enzyme source (Proc. Natl. Acad. Sci. 1998, 95,
- sf9 cells were infected with recombinant baculo virus containing human DGATl coding sequences and harvested after 48 h. Cells were lysed by sonication and membranes isolated by centrifuging at 28000 rpm for 1 h at 4 °C on a 41% sucrose gradient. The membrane fraction at the interphase was collected, washed, and stored in liquid nitrogen.
- DGATl activity was assayed by a modification of the method described by Coleman (Methods in Enzymology 1992, 209, 98-102).
- Compound at 1-10 ⁇ M was incubated with 0.4 ⁇ g membrane protein, 5 mM MgCl 2 , and 10 O ⁇ M 1,2 dioleoyl-r ⁇ -glycerol in a total assay volume of 200 ⁇ l in plastic tubes.
- the reaction was started by adding 14 C oleoyl coenzyme A (30 ⁇ M final concentration) and incubated at room temperature for 30 minutes.
- the reaction was stopped by adding 1.5 mL 2-propanol:heptane:water (80:20:2).
- Radioactive triolein product was separated into the organic phase by adding ImL heptane and 0.5 niL 0.1 M carbonate buffer pH 9.5.
- DGATl activity was quantified by counting aliquots of the upper heptane layer by liquid scintillography.
- the compounds generally show activity with IC 50 ⁇ 100nM, preferably ⁇ 50 nM, more preferably ⁇ 10 nM.
- the lipids were extracted into the organic phase using a heptane:propan-2-ol:water (80:20:2) mixture followed by aliquots of water and heptane according to the method of Coleman (Methods in Enzymology, 1992, 209, 98-104).
- the organic phase was collected and the solvent evaporated under a stream of nitrogen.
- MCF7 Human mammary epithelial cells were cultured to confluency in 6 well plates in foetal calf serum containing media. For the experiment, the medium was changed to serum-free medium and the cells pre-incubated with compound solubilised in DMSO (final concentration 0.1%) for 30 minutes. De novo lipogenesis was measured by the addition of 50 ⁇ M sodium acetate plus 3 ⁇ Ci/mL 14 C-sodium acetate to each well for a further 3 h (J. Biol. Chem., 1976, 251, 6462-6464). The cells were washed in phosphate buffered saline and solubilised in 1% sodium dodecyl sulfate.
- the ability of compounds to inhibit ACAT can be measured using a modification of the enzyme assay described in Billheimer (1985) Methods in Enzymology, 111, 286-293.
- the test assesses the ability of a test compound to inhibit the esterif ⁇ cation of cholesterol by measuring the amount of radiolabeled cholesteryl oleate formed from radiolabeled oleoyl CoA.
- Compound was incubated with 10 ⁇ g membrane protein and 267 ⁇ M cholesterol. After a 5 minute pre-incubation at 37 0 C the reaction was started by adding 14 C oleoyl coenzyme A (50 ⁇ M final concentration) and incubated at 37 0 C for a further 30 minutes.
- the reaction was stopped by adding 2-propanol:heptane (12:1). Radioactive cholesteryl ester product was separated into the organic phase by adding heptane and IM carbonate buffer pH 9.5. ACAT activity was quantified by counting aliquots of the upper heptane layer by liquid scintillography.
- the selectivity of a compound to inhibit DGAT over inhibition of ACAT may be defined as the ratio of IC 50 values generated in the DGAT and ACAT enzyme assays for a particular compound. For example, Example 1 demonstrated 70 fold selectivity,
- temperatures are given in degrees Celsius ( 0 C); operations were carried out at room or ambient temperature, that is, at a temperature in the range of 18-25 °C and under an atmosphere of an inert gas such as argon;
- organic solutions were dried over anhydrous magnesium sulfate; evaporation of solvent was carried out using a rotary evaporator under reduced pressure (600-4000 Pa; 4.5-30 mmHg) with a bath temperature of up to 60 °C;
- chromatography means flash chromatography on silica gel; where a Biotage cartridge is referred to this means a cartridge containing KP-SILTM silica, 6 ⁇ A, particle size 32-63 rnM, supplied by Biotage, a division of Dyax Corp., 1500 Avon Street Extended,
- NMR data ( 1 H) is in the form of delta values for major diagnostic protons, given in parts per million (ppm) relative to tetramethylsilane (TMS), determined at 300 or 400 MHz (unless otherwise stated) using perdeuterio dimethyl sulfoxide (DMSO-J 6 ) as solvent, unless otherwise stated; peak multiplicities are shown thus: s, singlet; d, doublet; dd, doublet of doublets; dt, doublet of triplets; dm, doublet of multiplets; t, triplet, q, quartet; m, multiplet; br, broad; (vii) chemical symbols have their usual meanings; SI units and symbols are used; (viii) solvent ratios are given in volume : volume (v/v) terms;
- phase separation cartridges where phase separation cartridges are stated then ISOLUTE Phase Separator 70ml columns, supplied by Argonaut Technologies, New Road, Hengoed, Mid Glamorgan, CF82 8AU, United Kingdom, were used;
- a SiliCycle cartridge where a SiliCycle cartridge is referred to this means a cartridge containing Ultra Pure Silica Gel particle size 230-400 mesh, 40 -63 um pore size, supplied by SiliCycle Chemical Division, 1200 Ave St-Jean-Baptiste, Suite 114, Quebec City, Quebec, G2E 5E8, CANADA;
- xi ⁇ where an Isco Companion is referred to then a Combiflash companion chromatography instrument, supplied by ISOC Inc. Address Teledyne ISOC Inc, 4700 Superior Street, Lincoln, NE 68504, USA, was used;
- a microwave where a microwave is referred to this means a Biotage Initiator sixty or Smith Creator microwave, supplied by Biotage, a division of Dyax Corp., 1500 Avon Street Extended, Charlottesville, VA 22902, USA;
- Example 1 c/s-4-(3-Fluoro-4- ⁇ f 5-(2,4,5-trifluoro-phenylaminoHl ,3,41 oxadiazole-2- carbonyll-amino ⁇ -phenoxy)-cvclohexanecarboxylic acid
- the mixture was concentrated in vacuo, acidified with a IM aqueous solution of citric acid and then filtered to leave a solid.
- the solid was washed with water, dried and recrystallised from ethanol (30 mL) to give the title compound as a white solid (700 mg, 64%).
- 2,4,5-Trifluorophenyl isothiocyanate 600 mg, 3.0 mmol was added in one portion to a stirred suspension of 4-[3-fluoro-4-(hydrazinooxalyl-amino)-phenoxy]-cyclohexane- carboxylic acid ethyl ester (920 mg, 2.5 mmol) in DMA (10 mL) and the reaction mixture was stirred at ambient temperature for 1 h. EDCI (720 mg, 3.76 mmol) was added and the mixture was heated at 9O 0 C for 10 mins in a microwave. The reaction mixture was concentrated in vacuo to leave a residue. Water was added and the mixture was filtered and dried under high vacuum to leave the title compound (Intermediate 1) as a pale yellow powder (1.2 g, 92%).
- Example 2 c/5-4-(3-FIuoro-4-([5-(3,4,5-trifluoro-phenyIamino)-fl,3 ⁇ 41oxadiazoIe-2- carbonvU-amino ⁇ -phenox ⁇ )-eyclohexaneearboxyIic acid
- Example 4 ⁇ m «5 l -4-f3-FIuoro-4-ff5-[(2,4,5-trifluoroDhenyl)amino11,3,4-oxadiazole-2- carbonyllaminolphenoxylcyclohexane-l-carboxylic acid
Abstract
Description
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EP07732997A EP2041099A1 (en) | 2006-05-30 | 2007-05-29 | 1, 3, 4 -oxadiazole derivatives as dgat1 inhibitors |
US12/302,192 US8003676B2 (en) | 2006-05-30 | 2007-05-29 | 1,3,4-oxadiazole derivatives as DGAT1 inhibitors |
NZ572585A NZ572585A (en) | 2006-05-30 | 2007-05-29 | 1,3,4-Oxadiazole derivatives as DGAT1 inhibitors |
CA002651663A CA2651663A1 (en) | 2006-05-30 | 2007-05-29 | Chemical compounds |
MX2008015226A MX2008015226A (en) | 2006-05-30 | 2007-05-29 | 1, 3, 4 -oxadiazole derivatives as dgat1 inhibitors. |
CN2007800202196A CN101460470B (en) | 2006-05-30 | 2007-05-29 | 1,3, 4-oxadiazole derivatives as DGAT1 inhibitors |
BRPI0712796-0A BRPI0712796A2 (en) | 2006-05-30 | 2007-05-29 | compound, methods for producing an inhibition of dgat1 activity in a warm-blooded animal, for treating diabetes mellitus and / or obesity in a warm-blooded animal, use of a compound, pharmaceutical composition, and process for a compound |
AU2007266890A AU2007266890B2 (en) | 2006-05-30 | 2007-05-29 | 1, 3, 4 -oxadiazole derivatives as DGAT1 inhibitors |
JP2009512663A JP2009538891A (en) | 2006-05-30 | 2007-05-29 | 1,3,4-oxadiazole derivatives as DGAT1 inhibitors |
NO20084663A NO20084663L (en) | 2006-05-30 | 2008-11-05 | 1,3,4-oxadiazole derivatives as DGAT1 inhibitors |
IL195125A IL195125A0 (en) | 2006-05-30 | 2008-11-05 | 1,3,4-oxadiazole derivatives as dgat1 inhibitors |
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- 2007-05-29 WO PCT/GB2007/001981 patent/WO2007138304A1/en active Application Filing
- 2007-05-29 KR KR1020087029466A patent/KR20090010092A/en not_active Application Discontinuation
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- 2007-05-29 JP JP2009512663A patent/JP2009538891A/en active Pending
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- 2007-05-29 AU AU2007266890A patent/AU2007266890B2/en not_active Ceased
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Also Published As
Publication number | Publication date |
---|---|
JP2009538891A (en) | 2009-11-12 |
AU2007266890A1 (en) | 2007-12-06 |
NO20084663L (en) | 2008-12-12 |
CA2651663A1 (en) | 2007-12-06 |
NZ572585A (en) | 2011-02-25 |
KR20090010092A (en) | 2009-01-28 |
CN101460470A (en) | 2009-06-17 |
US8003676B2 (en) | 2011-08-23 |
CN101460470B (en) | 2011-05-18 |
ZA200809689B (en) | 2010-04-28 |
EP2041099A1 (en) | 2009-04-01 |
IL195125A0 (en) | 2011-08-01 |
BRPI0712796A2 (en) | 2012-10-02 |
US20100029727A1 (en) | 2010-02-04 |
AU2007266890B2 (en) | 2011-02-17 |
MX2008015226A (en) | 2008-12-12 |
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