WO2000021927A2 - Pyrrole-2,5-diones as gsk-3 inhibitors - Google Patents
Pyrrole-2,5-diones as gsk-3 inhibitors Download PDFInfo
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- WO2000021927A2 WO2000021927A2 PCT/GB1999/003280 GB9903280W WO0021927A2 WO 2000021927 A2 WO2000021927 A2 WO 2000021927A2 GB 9903280 W GB9903280 W GB 9903280W WO 0021927 A2 WO0021927 A2 WO 0021927A2
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- 0 CC(*)(C=CC=C1)C=C1C(C(N(*)C1=O)=O)=C1N(C1=CC=CC(C)(*=C)C=C1)I Chemical compound CC(*)(C=CC=C1)C=C1C(C(N(*)C1=O)=O)=C1N(C1=CC=CC(C)(*=C)C=C1)I 0.000 description 2
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- C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D207/44—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having three double bonds between ring members or between ring members and non-ring members
- C07D207/444—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having three double bonds between ring members or between ring members and non-ring members having two doubly-bound oxygen atoms directly attached in positions 2 and 5
- C07D207/456—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having three double bonds between ring members or between ring members and non-ring members having two doubly-bound oxygen atoms directly attached in positions 2 and 5 with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to other ring carbon atoms
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- 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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- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
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- C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
- C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
- C07D403/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings directly linked by a ring-member-to-ring-member bond
Definitions
- This invention relates to a novel method for the treatment and/or prophylaxis of conditions associated with a need for inhibition of glycogen synthase kinase-3 (GSK-3), especially diabetes, including chronic neurodegenerative conditions, including dementias such as Alzheimer's disease, neurotraumatic diseases, such as acute stroke, mood disorders such as schizophrenia and manic depression, and for the treatment and/or prophylaxis of hair loss and cancer, and to certain novel inhibitors of GSK-3 for use in such a method.
- GSK-3 is a serine/threonine protein kinase composed of two isoforms ( ⁇ and ⁇ ) which are encoded by distinct genes.
- GSK-3 is one of several protein kinases which phosphorylates glycogen synthase (GS) (Embi et al Eur. J. Biochem. (107) 519-527 (1980)).
- the ⁇ and ⁇ isoforms have a monomeric structure of 49 and 47kD respectively and are both found in mammalian cells. Both isoforms phosphorylate muscle glycogen synthase (Cross et al Biochemical Journal (303) 21-26 (1994)) and these two isoforms show good homology between species (e.g. human and rabbit GSK-3 ⁇ are 96% identical).
- Type II diabetes or Non-Insulin Dependent Diabetes Mellitus, NIDDM
- Hyperglycaemia is due to insulin resistance in the liver, muscle and other tissues coupled with inadequate or defective secretion of insulin from pancreatic islets.
- Skeletal muscle is the major site for insulin-stimulated glucose uptake and in this tissue, glucose removed from the circulation is either metabolised through glycolysis and the TCA cycle, or stored as glycogen.
- Muscle glycogen deposition plays the more important role in glucose homeostasis and Type II diabetic subjects have defective muscle glycogen storage.
- glycogen synthase The stimulation of glycogen synthesis by insulin in skeletal muscle results from the dephosphorylation and activation of glycogen synthase (Villar-Palasi C. and Larner J. Biochim. Biophys. Acta (39) 171-173 (1960), Parker P J et al, Eur. J. Biochem. (130) 227-234 (1983). and Cohen P. Biochem. Soc. Trans. (21) 555-567 (1993)).
- the phosphorylation and dephosphorylation of GS are mediated by specific kinases and phosphatases.
- GSK-3 is responsible for phosphorylation and deactivation of GS, while glycogen bound protein phosphatase 1 (PP1G) dephosphorylates and activates GS.
- GSK-3 ⁇ and constitutively active GSK-3 ⁇ (S9A, S9E) mutants in HEK-293 cells resulted in supression of glycogen synthase activity (Eldar-Finkelman et al., PNAS (93) 10228- 10233 (1996)) and overexpression of GSK-3 ⁇ in CHO cells, expressing both insulin receptor and insulin receptor substrate 1 (IRS-1), resulted in an impairment of insulin action (Eldar-Finkelman and Krebs PNAS (94) 9660-9664 (1997)).
- GSK-3 has been shown to phosphorylate other proteins in vitro including the eukaryotic initiation factor eIF-2B at Serine 540 (Welsh et al, FEBS Letts (421) 125-130 (1998)). This phosphorylation results in an inhibition of eIF-2B activity and leads to a reduction in this key regulatory step of translation. In disease states, such as diabetes, where there is elevated GSK-3 activity this could result in a reduction of translation and potentially contribute to the pathology of the disease.
- GSK-3 activity is subject to inhibitory phosphorylation by PI 3 kinase-mediated or Wnt-1 class-mediated signals that can be mimicked by treatment with lithium, a low mM inhibitor of GSK-3 (Stambolic V., Ruel L.and Woodgett J.R. Curr. Biol. 1996 6(12): 1664-8).
- GSK-3 inhibitors may be of value as neuroprotectants in treatment of acute stroke and other neurotraumatic injuries.
- Tau and ⁇ -catenin are of direct relevance in consideration of further aspects of the value of GSK-3 inhibitors in relation to treatment of chronic neurodegenerative conditions.
- Tau hyperphosphorylation is an early event in neurodegenerative conditions such as Alzheimer's disease (AD), and is postulated to promote microtubule disassembly.
- AD Alzheimer's disease
- Lithium has been reported to reduce the phosphorylation of tau. enhance the binding of tau to microtubules, and promote microtubule assembly through direct and reversible inhibition of glycogen synthase kinase-3 (Hong M., Chen D.C., Klein P.S. and Lee V.M. J.Biol. Chem. 1997 272(40) 25326-32).
- ⁇ -catenin is phosphorylated by GSK-3 as part of a tripartite complex with axin, resulting in ⁇ -catenin being targetted for degradation (Ikeda et al, (1998) EMBO J. 17: 1371-1384). Inhibition of GSK-3 activity is a key mechanism by which cytosolic levels of catenin are stabilised and hence promote ⁇ -catenin-LEF-1/TCF transcriptional activity (Eastman, Grosschedl (1999) Curr. Opin. Cell Biol. 11: 233). Rapid onset AD mutations in presenilin-1 (PS-1) have been shown to decrease the cytosolic ⁇ -catenin pool in transgenic mice.
- PS-1 presenilin-1
- WO 97/41854 discloses that an effective drug for the treatment of manic depression is lithium, but that there are serious drawbacks associated with this treatment. Whilst the precise mechanism of action of this drug for treatment of manic depression remains to be fully defined, current models suggest that inhibition of GSK-3 is a relevant target that contributes to the modulation of AP-1 DNA binding activity observed with this compound (see Manji et al, (1999) J. Clin. Psychiatry 60 (suppl 2): 27-39 for review).
- GSK-3 inhibitors may also be of value in treatment of schizophrenia.
- Reduced levels of ⁇ -catenin have been reported in schizophrenic patients (Cotter D, Kerwin R, al- Sarraji S, Brion JP, Chadwich A, Lovestone S, Anderton B, Everall I. 1998 Neuroreport 9:1379-1383 ) and defects in pre-pulse inhibition to startle response have been observed in schizophrenic patients (Swerdlow et al, (1994) Arch. Gen. Psychiat. 51: 139-154).
- United States Patent Number 3335147 discloses certain 3-amino-4- arylmaleimides as having topical anaesthetic activity.
- DE 19744257 discloses certain 3- amino-4-arylmaleimides as being tyrosine kinase inhibitors.
- Chem. Pharm. Bull. ( 1998), 46(4), 707-710 discloses certain 3-amino-4-arylmaleimides as being trypanothione reductase inhibitors.
- SA 672268 discloses certain 3-amino-4-arylmaleimides as being antimicrobials.
- GSK-3 inhibitors per se are potentially useful in the treatment and/or prophylaxis of mood disorders, such as schizophrenia, neurotraumatic diseases, such as acute stroke, and for the treatment and/or prophylaxis of cancer and hair loss .
- the present invention provides a method for the treatment of conditions associated with a need for inhibition of GSK-3, such as diabetes, dementias such as Alzheimer's disease and manic depression which method comprises the administration of a pharmaceutically effective, non-toxic amount of a compound of formula (I):
- R is hydrogen, alkyl, aryl, or aralkyl
- R ' is hydrogen, alkyl, aralkyl, hydroxyalkyl or alkoxyalkyl
- R- is substituted or unsubstituted aryl or substituted or unsubstituted heterocyclyl
- R J is hydrogen, substituted or unsubstituted alkyl, cycloalkyl, alkoxyalkyl, substituted or unsubstituted aryl, substituted or unsubstituted heterocyclyl or aralkyl wherein the aryl moiety is substituted or unsubstituted; or.
- R! and R ⁇ together with the nitrogen to which they are attached form a single or fused, optionally substituted, saturated or unsaturated heterocylic ring; to a human or non-human mammal in need thereof.
- R is hydrogen, C j .galkyl, such as methyl or ethyl, or R is phenyl or benzyl.
- R is hydrogen.
- R ⁇ is hydrogen, Ci .galkyl, such as methyl, ethyl, or Rl is hydroxyethyl or methoxyethyl.
- R ⁇ is hydrogen
- R2 When R2 is substituted or unsubstituted aryl, examples of aryl groups include phenyl and naphthyl.
- R ⁇ When R ⁇ is substituted or unsubstituted heterocyclyl, examples of heterocyclyl groups include indolyl. benzofuranyl, thienyl and benzothienyl.
- suitable substituents include up to three groups independently selected from halo, Cj.galkoxy, nitro, perfluoroC ⁇ _6alkyl, benzoyl, C ⁇ . galkoxycarbonyl, Cj.galkylsulphonyl, hydroxy, -O(CH2) w O- where w is 1 to 4, phenoxy, benzyloxy, C i .galkoxyC j . ⁇ alkyl, perfluoroC ⁇ .galkoxy, C ⁇ .galkylS-, perfluoroC ⁇ _6alkylS-, (diC ⁇ .galkyl)N-, amino, Ci.galkylcarbonylamino, substituted or unsubstituted ureido, phenylcarbonylamino, benzylcarbonylamino, styrylcarbonylamino, (diC j .galkoxyXpheny C-, Cj
- Suitable substituents for ureido include fluorophenyl, phenylCj.galkyl-, cyclohexyl, C ⁇ . 6 a lkenyl, C ⁇ .galkyl, and C ⁇ .galkoxyphenyl.
- R2 When R2 is substituted indolyl, suitable substituents include C i.galkyl.
- R2 is substituted benzothienyl
- suitable substituents include C j .galkyl.
- R ⁇ is substituted or unsubstituted phenyl.
- R ⁇ is phenyl substituted with; 4-C1: 3-C1: 2-C1; 2.4-di-Cl; 3.4-di-Cl: 3.5-di-Cl: 2.6-di-Cl; 2-F-6-C1; 2-F; 3-F; 4-
- R ⁇ is alkyl
- examples include methyl and ethyl.
- examples include cyclohexyl.
- R3 is alkoxyalkyl
- examples include methoxyethyl
- R3 is aralkyl
- examples include benzyl and phenylethyl.
- R3 is substituted or unsubstituted aryl
- examples include fluorenyl, phenyl, and dibenzofuryl.
- R3 is substituted or unsubstituted heterocyclyl
- examples include thienyl, oxazolyl, benzoxazolyl, pyridyl, and pyrimidinyl.
- R! and R ⁇ together with the nitrogen atom to which they are attached form a fused heterocyclic ring, which ring may be unsubstituted or substituted examples include indolinyl, indolyl, oxindolyl, benzoxazolinonyl, tetrahydroquinolinyl, tetrahydroisoquinolinyl, benzimidazolyl, benzazepinyl, isoindolin-2-yl, and 1.3,3- trimethyl-6-azabicyclo[3.2.1]oct-6-yl.
- R! and R- together with the nitrogen atom to which they are attached form a single heterocyclic ring which ring may be unsubstituted or substituted
- examples include 1 -phenyl- 1, 3, 8-triazaspiro-[4,5]-decan-4-one-8-yl, piperazinyl, pyrrolidinyl, piperidinyl, morpholinyl, thiomorpholinyl, and a pyridinium ring.
- suitable substituents include up to three groups independently selected from substituted or unsubstituted Cj.galkyl, phenyl, benzyl, substituted or unsubstituted C ⁇ alkylS-, halo, hydroxy, substituted or unsubstituted C ⁇ _ galkoxy, substituted or unsubstituted phenoxy, indolyl, naphthyl, carboxy, C i .
- x and y are independently 1 to 4, pyrimidin-2- yloxy, phenylamino, N-[pyrimidin-2-yl]-N-[C ⁇ _6alkyl]amino, C ⁇ .galkylsulphonylamino, and 1.2,3-thiadiazolyl.
- Suitable substituents for Cj. ⁇ alkyl include hydroxy, carboxy, unsubstituted or N-substituted carbamoyl, N-morpholinylcarbonyl,
- Suitable substituents for Cj.galkylS- include carboxy, C i . ⁇ alkoxycarbonyl, C j .galkoxyC i .galkylaminocarbonyl, unsubstituted or N-substituted carbamoyl. and fluoro.
- Suitable substituents for Cj.galkoxy include Ci .galkoxy, phenyl, carboxy. C ] _5alkoxycarbonyl, unsubstituted or N-substituted carbamoyl, and phenyl.
- Suitable substituents for carbamoyl include Cj.galkyl, and Ci.galkoxyCi ⁇ alkyl.
- Suitable substituents for C i _5alkylcarbonyl include carboxy, and C j .galkoxycarbonyl .
- Suitable substituents for phenylS- include chloro, nitro, carboxy, C j .galkylaminocarbonyl, unsubstituted or N-substituted carbamoyl, and C j . galkoxycarbonyl.
- Suitable substituents for C ⁇ alkenyl include (diC 1 _6alkyl)aminocarbonyl, carboxy, C i _6alkoxycarbonyl, carbamoyl, and phenyl.
- Suitable substituents for piperazinylC ⁇ . ⁇ alkoxy include methyl.
- Suitable substituents for phenoxy include chloro.
- Suitable substituents for benzoylamino include hydroxy.
- R J is substituted benzofuryl
- suitable substituents include Ci .galkylcarbonyl.
- R3 When R3 is substituted thienyl, suitable substituents include Ci .galkylcarbonyl.
- R is substituted oxazolyl
- suitable substituents include C j .galkyl.
- R3 is substituted benzoxazolyl
- suitable substituents include halo.
- suitable substituents include up to three substituents independently selected from C ⁇ _5alkyl, Cj.galkoxy, and halo.
- R ⁇ is substituted or unsubstituted phenyl.
- R J is phenyl substituted with
- 2-Me 2-Et; 2-iP ⁇ 2-CH 2 OH; 2-Ph; 2-CH 2 Ph: 2-SMe; 2-F; 2-Cl; 2-OH; 2- OMe: 2-OPh: 2-Me-5-F; 2-Me-3-Cl; 2-Me-4-Cl; 2-Me-5-Cl; 2-Me-3-Br; 2.3-di-Me: 2,4- di-Me: 2-Me-4-OH; 2-Me-4-OMe; 2-Me-5-CH2OH: 2,4,6-tri-Me; 2-(2-Indolyl); ( 1 - Naphthyl); 2-Me-5-COOH; 2-Me-5-COOMe; 2-OH-5-COOH; 2-[O(CH 2 )2OMe]-5- [(CH 2 )2COOH]; 2-[SCH(Ph)CONH(CH 2 )2(3,4-di-OMePh)]; 3-Me; 3-Et; 3-CH 2 OH; 3- CH 2
- suitable substituents include Ci .galkyl, perfluoroC ]_6alkyl.
- suitable substituents include perfluoroC j.galkyl.
- suitable substituents include amino.
- suitable substituents include hydroxy.
- suitable substituents include benzyl, hydroxy Cj.galkyl, C ⁇ _6alkyl, hydroxy, carbamoyl, and C 1.galkoxycarbonyl.
- Butanamide 4-[(aminoiminomethyl)amino]-N-[5-[[2.5-dihydro-4-(lH-indol-3-yl)-2,5- dioxo-lH-pyrrol-3-yl]amino]pentyl]-, (S)- ;
- Butanamide 4-[(aminoiminomethyl)amino]-N-[5-[[2,5-dihydro-4-( 1 H-indol-3-yl)-2,5- dioxo-lH-pyrrol-3-yl]amino]pentyl]-, (S)- ;
- the compounds of formula (IB) are novel. Accordingly , the present invention also provides a compound of the above defined formula (IB) or a derivative thereof.
- R and R ⁇ are as defined in relation to formula (I);
- R! 1 represents hydrogen or one or more substituents, suitably up to three, selected from the list consisting of: substituted or unsubstituted Cj.galkyl, phenyl, benzyl, substituted or unsubstituted Cj.galkylS-. halo, hydroxy, substituted or unsubstituted C ⁇ . galkoxy. substituted or unsubstituted phenoxy, indolyl. naphthyl, carboxy, C j . galkoxycarbonyl, benzyloxy, phenoxy, pentafluorophenoxy, nitro.
- R is hydrogen
- R ⁇ is hydrogen
- R ⁇ represents hydrogen or one or more substituents selected from the list consisting of: halo, hydroxy. alkyl, alkylthio. alkoxy. amino or methylenedioxy, especially one or more halo and alkyl groups.
- R ⁇ represents hydrogen or the substituents selected from the list consisting of: 2-Br, 2-C1, 2-F. 2-OMe. 3-Cl. 3-F, 3-Me. 3-NH 2 , 3-OMe, 4-Br. 4-C1, 4-1, 4-Me. 4-OH. 4-OMe, 4-SMe, 2.3-di-F, 2,5-di-F, 2,6-di-F, 3,4-di-F, 3,5-di-F, 2.3.5-tri-F. 2.4-di-Cl. 2,4-di-OMe, 3,4-(OCH 2 O) and 3,5-di-Me.
- R*" represents the substituents selected from the list consisting of: 2-Br, 2-C1, 2-F, 2-OMe. 3-Cl, 3-F, 3-Me, 4-Br, 4-C1, 4-1. 2,3-di-F, 2,5-di-F. 2,6-di-F, 3.4-di-F, 3,5-di-F, 2,3,5-tri-F, 2.4-di-Cl and 3,5-di-Me.
- R ⁇ O represents the substituents selected from the list consisting of: 2- F, 2-OMe, 3-F, 4-C1 and 2,3-di-F.
- R ⁇ 1 represents hydrogen or one or more substituents selected from the list consisting of: 2-F, 2-Me, 3-Br. 3-Cl , 3-F, 3-1, 3-OH, 3-OMe, 3-OPh, 3-SMe. 3- CO 2 H. 3-CH 2 CO 2 H. 3-CH 2 CO Me. 3-CH 2 CONH 2 , 3-CH 2 CONHMe. 3-CH 2 OH. 4-Cl. 4-F. 4-Me, 4-NHCOMe, 4-NHPh. 4-NHSO 2 Me, 4-NMe 2 , 4-OMe. 4-COPh. 4-SMe, 4-CH 2 CN. 4-SO NH 2 , 4-(CH 2 ) 2 OH.
- R ⁇ 1 represents hydrogen or the substituents selected from the list consisting of: 2-F, 2-Me, 3-Cl , 3-F, 3-1, 3-OMe, 3-OPh, 3-SMe, 3-CH 2 CO 2 H, 3-CH 2 CO 2 Me, 3-CH 2 CONH 2 , 3-CH 2 CONHMe, 3-CH 2 OH, 4-Cl, 4-F, 4-Me, 4- NHCOMe, 4-NHPh, 4-NHSO2Me. 4-NMe 2 , 4-OMe, 4-COPh, 4-SMe, 4-CH 2 CN. 4- SO 2 NH 2 . 4-(CH 2 ) 2 OH, 4-CH(OH)Ph, 4- CH 2 SO 2 NHMe.
- R' * represents the substituents selected from the list consisting of: 3-Cl , 3-Br. 4-OMe. 3.5-di-F. 4-CH 2 SO NHMe, 4-(CH 2 )3CO2H and 4-S-[3-CO 2 H- Ph],
- a particular compound of formula (IC) is that wherein R and Rl each represent hydrogen and R*-® and R! * each have the following respective values: R 10 Rl l
- R and R are as defined in relation to formula (I); R- is phenyl, substituted phenyl or indolyl;
- R3 is hydrogen, alkyl. cycloalkyl, phenyl, substituted phenyl, C ⁇ . alkylphenyl wherein the phenyl group is optionally substituted, alkoxyalkyl, substituted or unsubstituted heterocyclyl.
- R, R R2' and R ⁇ ' are as defined in relation to formula (ID) with the proviso that formula
- Pentanoic acid 4-amino-5-[[5-[[2,5-dihydro-4-(lH-indol-3-yl)-2,5-dioxo-lH-pyrrol-3- yl]amino]pentyl]amino]-5-oxo-, (S)-;
- Pentanamide 2-amino-5-[(aminoiminomethyl)amino]-N-[2-[[5-[[2,5-dihydro-4-( 1 H- indol-3-yl)-2,5-dioxo-lH-pyrrol-3-yl]amino]pentyl]amino]ethyl]-, (S)-;
- Butanamide 4-[(aminoiminomethyl)amino]-N-[5-[[2.5-dihydro-4-(lH-indol-3-yl)-2,5- dioxo- 1 H-pyrrol-3-yl]amino]pentyl]-, (S)-; 3-amino- 1.4-diphenyl- 1 H-pyrrole-2.5-dione;
- R ⁇ ' is indolyl, phenyl or phenyl substituted with one or more, suitably up to three, substituents selected from the list consisting of: halo, haloalkyl, alkoxy, nitro, alkyl and alkoxy.
- R2 ' examples include phenyl, indol-3-yl, 2-methoxyphenyl, 3-fluorophenyl, 3- nitrophenyl, 4-chlorophenyl, 4-iodophenyl, 4-(trifluoromethyl)phenyl and 2,3- difluorophenyl.
- R ⁇ ' represents hydrogen, Cj.g alkyl, cyclohexyl, phenyl, fluorenyl, Cj.o alkylphenyl, Ci-galkoxyCj ⁇ alkyl or a substituted or unsubstituted single or a single or fused ring heterocyclyl group having 5 or 6 ring atoms and up to 3 hetero atoms in each ring, such as oxazolyl, benzofuranyl, dibenzofuranyl, pyridinyl, quinolinyl, pyrimidinyl.
- R ⁇ ' examples include hydrogen, ethyl, cyclohexyl, phenyl, fluoren-2-yl, benzyl, phenyl(CH 2 )2-, MeO(CH 2 )2-. 4-methyloxazol-2-yl, 2-acetylbenzofuran-5-yl, dibenzofuran-2-yl, dibenzofuran-3-yl, 2-methylpyridin-3-yl 2,6-dimethylpyridin-3-yl, 2-chloropyridin-5-yl, quinolin-3-yl, pyrimidin-2-yl.
- the present invention also provides a compound of the above defined formula (ID”) or a derivative thereof.
- R *0 represents hydrogen or one or more, suitably up to three, substituents selected from the list consisting of: alkoxy, halo, and nitro;
- P ' -Q ' represents -(CH 2 ) a O(CH 2 ) b-, -(CH 2 ) a S(CH 2 )b-, -(CH 2 ) C -. -
- R, R 10 , and P'-Q' are as defined in relation to formula (IE) with the proviso that formula
- (IE') does not include: 3 -phenyl-4-piperidin- 1 -yl-pyrrole-2.5-dione;
- R ⁇ ' is methoxy, chloro, or nitro.
- R ⁇ ' examples include 4-methoxy, 4-chloro, 2,4-dichloro, and 3-nitro.
- Examples of -P'-Q'- include -(CH )4-, -(CH 2 ) 2 O(CH 2 ) 2 -, -(CH 2 ) 3 CH(Me)CH 2 -, -(CH 2 ) 3 CH(CONH2)CH2-, -(CH2) 3 CH(CH2 ⁇ H)CH 2 -, -(CH2)2CH(CH 2 Ph)(CH2)2- - (CH 2 J2CH(OH)(CH 2 )2-, -(CH 2 ) 5 -, and -(CH 2 )S(CH 2 ) 2 -
- the compounds of formula (IE') are novel. Accordingly , the present invention also provides a compound of the above defined formula (IE') or a derivative thereof.
- RIO is one or more, suitably up to three, substituents selected from the list consisting of perfluoroalkyl, halo, nitro, alkoxy, arylcarbonyl, alkyl; Z is a bond or an alkylene chain;
- Rl2a' 5 Rl2b' 5 anc j R12C' are eac h independently hydrogen, nitro, alkoxy, 4- ethylpiperazin-1-yl, 4-BOC-piperazin-l-yl, 4-methyl-piperazin-l-yl, 4-methyl-piperazin- l-yl. halo, alkyl, piperazin-1-yl, perfluoroalkyl, and alkylsulphonylamino.
- Z is a bond or a C ⁇ _ 2 alkylene chain.
- Examples of Z include a bond, methylene or ethylene.
- R ⁇ a R ⁇ b' ⁇ and R ⁇ c' examples include hydrogen, nitro. fluoro. methoxy, 4- ethylpiperazin-1-yl, 4-BOC-piperazin-l -yl, 4-methyl-piperazin-l-yl. 4-methyl-piperazin- 1 -yl, chloro, bromo. trifluoromethyl. and methanesulphonylamino.
- Z is a bond.
- -X-Y- is -(CH 2 )2- or -CH(CH 2 OH)CH 2 -, -CH(Me)CH 2 -, - CH 2 CH(Me)-, or -CH 2 C(Me) 2 -.
- R 2b j s fluorine.
- R ⁇ a' i s fluorine.
- R 10 " is 2-Br, 2-Cl, 2-F, 2-OMe, 3-Cl, 3-F, 3-Me, 4-Br, 4-Cl, 4-1,
- -X-Y- is -(CH 2 ) 2 - or -CH(CH 2 OH)CH 2 -, -CH(Me)CH 2 -, -CH 2 CH(Me)-, or - CH 2 C(Me) 2 -, R ⁇ 2b' i s fluorine;
- the compounds of formula (IF) are novel. Accordingly , the present invention also provides a compound of the above defined formula (IF) or a derivative thereof.
- R and R ⁇ are as defined in relation to formula (I);
- A is N(alkyl). oxygen, or sulphur. Examples of A are N(methyl), oxygen, and sulphur. Preferably. A is sulphur.
- R ⁇ ' is hydrogen
- [ 5 present invention also provides a compound of the above defined formula (IG) or a derivative thereof.
- R and R ⁇ are as defined in relation to formula (I);
- R 1 !'" is -[(CH2)aa where aa is 1 to 4; 5 R 1 ⁇ ' is hydrogen;
- R! 5' is alkyl, unsubstituted or substituted phenylamino. unsubstituted or substituted phenylalkylamino. cyclohexylamino, alkenylamino, phenyl, benzyl, styryl, or alkylamino.
- R 1 1 "' examples include 3,4-[(CH 2 ) ].
- R ⁇ 1 examples include methyl, (3-fluorophenyl)amino, phenylethylamino, cyclohexylamino. propenylamino, phenyl, benzyl, tr ⁇ ra-styryl, rc-propyl, ethylamino, and 5 (3-methoxyphenyl)amino. It is considered that the compounds of formula (IH) are novel. Accordingly , the present invention also provides a compound of the above defined formula (IH) or a derivative thereof.
- R and R ⁇ are as defined in relation to formula (I);
- RIO' represents one or more, suitably up to three, substituents independently selected from alkoxy or halo;
- Rl6' represents one or more, suitably up to three, substituents independently selected from hydrogen, carboxy, alkoxycarbonyl, or alkylaminocarbonyl
- R! 7' represents one or more, suitably up to three, substituents independently selected from carboxy, alkoxycarbonyl, halo, alkylaminocarbonyl, nitro, or hydrogen;
- W is sulphur, oxygen, or substituted or unsubstituted NH.
- W is sulphur or oxygen. Favourably. W is sulphur.
- R ⁇ is Ci.galkoxy, chloro, or fluoro.
- R ⁇ '" are methoxy, 4-chloro, 2-chloro. and 2.3-difluoro.
- RIO is 2.3-difluoro.
- Rl6' i hydrogen, carboxy. Cj.galkoxycarbonyl, or
- R*° are carboxy, hydrogen, ethoxycarbonyl, methoxycarbonyl, and methylaminocarbonyl.
- R ⁇ ' is hydrogen
- R ⁇ ' is carboxy.
- R ⁇ ' examples are 2-carboxy, 3-carboxy, 4-carboxy, 4-chloro, 2-methylaminocarbonyl, 4-nitro, hydrogen, and 2-ethoxycarbonyl.
- Rl ' is 3-carboxy.
- R and R ⁇ are as defined in relation to formula (I);
- R! 1 "" represents one or more, suitably up to three, substituents independently selected from halo and hydroxy;
- A is sulphur
- R* 1 ' is chloro or hydroxy.
- R* 1 3-chloro and 3,5-dichloro-4-hydroxy.
- the compounds of formula (IK) are novel. Accordingly , the present invention also provides a compound of the above defined formula (IK) or a derivative thereof.
- R2"' is unsubstituted or substituted heterocyclyl or unsubstituted or substituted aryl
- R! 9' is unsubstituted or substituted heterocyclyl, or a quaternised salt thereof.
- R. R- ". and R ⁇ ' are as defined in relation to formula (IL) with the proviso that (IL') does not include the following compounds, hereinafter referred to as List L': 3-indol- 1 -yl-4-( 1 -methyl- 1 H-indol-3-yl)-pyrrole-2.5-dione: l-(l-methyl-2.5-dioxo-4-phenylamino-2.5-dihydro-lH-pyrrol-3-yl)-pyridinium chloride; l-l-(4-methyl-pentyl)-2,5-dioxo-4-phenylamino-2.5-dihydro-lH-pyrrol-3-yl)-pyridinium chloride: 1 -(1 -dodecyl-2.5-dioxo-4-phenylamino-2,5-dihydro-lH-pyrrol-3-yl)-pyridinium chloride;
- R ⁇ 1 " is thienyl, phenyl, or phenyl substituted with one or more halogen groups.
- R ⁇ include phenyl, 3-thienyl, 2-thienyl, 4-chlorophenyl, and
- R ⁇ ' ' is phenyl, 3-thienyl, 4-chlorophenyl, or 2.4-dichlorophenyl.
- R ⁇ ' is indolinyl. pyridinium halide. azabicyclooctanyl, or tri azaspirodecanony 1.
- R ⁇ include indolin-1-yl. 3-amino- 1 -pyridinium chloride. 2- methylindolin-1-yl, l,3,3-trimethyl-6-azabicyclo[3.2J]octan-6-yl, and l-phenyl-1,3,8- triazaspiro-[4,5]-decan-4-one-8-yl.
- R ⁇ ' is indolin-1-yl. or 2-methylindolin-l-yl.
- the compounds of formula (IL') are novel. Accordingly , the present invention also provides a compound of the above defined formula (IL') or a derivative thereof.
- Certain of the compounds of formula (I) may contain at least one chiral carbon, and hence they may exist in one or more stereoisomeric forms.
- the present invention encompasses all of the isomeric forms of the compounds of formula (I) whether as individual isomers or as mixtures of isomers, including racemates.
- Alkyl groups referred to herein, including those forming part of other groups include straight or branched chain alkyl groups containing up to six carbon atoms, said carbon atoms being optionally substituted with up to five, suitably up to three, groups selected from the list consisting of aryl, heterocyclyl, alkylthio. alkenylthio. alkynylthio, arylthio.
- heterocyclylthio alkoxy, arylalkoxy, arylalkylthio, amino. mono- or di- alkylamino, cycloalkyl, cycloalkenyl, carboxy and esters thereof, phosphonic acid and esters thereof, mono- or dialkylaminosulphonyl, aminosulphonyl, cyano, alkylcarbonylamino. arylcarbonylamino, hydroxy, and halogen.
- Alkenyl and alkynyl groups referred to herein include straight and branched chain alkenyl groups containing from two to six carbon atoms, said carbon atoms being optionally substituted with up to five, suitably up to three, groups including those substituents described hereinbefore for the alkyl group.
- Cycloalkyl and cycloalkenyl groups referred to herein include groups having between three and eight ring carbon atoms, which carbon atoms are optionally substituted with up to five, suitably up to three, groups including those substituents described hereinbefore for the alkyl group.
- aryl includes phenyl and biphenyl groups, for example naphthyl, especially phenyl.
- substituents for any aryl group include up to three substituents selected from the list consisting of halo, alkyl, alkenyl, substituted alkenyl, arylalkyl, alkoxy, alkoxyalkyl, haloalkyl, haloalkyloxy, hydroxy, hydroxyalkyl, nitro, amino, cyano, cyanoalkyl , mono- and di-N-alkylamino, acyl, acylamino, N-alkylacylamino, acyloxy, carboxy, carboxyalkyl, carboxyalkylcarbonyl, carboxyalkenyl, ketoalkylester.
- carbamoyl carbamoylalkyl, mono- and di-N-alkylcarbamoyl, alkoxycarbonyl, alkoxycarbonylalkyl, aryloxy, arylthio, aralkyloxy, aryloxycarbonyl, ureido, guanidino, mo ⁇ holino, adamantyl.
- oxazolyl aminosulphonyl, alkylaminosulphonyl, alkylthio, haloalkylthio, alkylsulphinyl. alkylsulphonyl. cycloalkyl. heterocyclyl.
- heterocyclylalkyl trityl, substituted trityl, mono- or bis-alkylphosphonate or mono- or bis-alkylphosphonateC ⁇ _ 5alkyl or any two adjacent substituents on the phenyl ring together with the carbon atoms to which they are attached form a carbocyclic ring or a heterocyclic ring.
- heterocyclyl and “heterocyclic” suitably include, unless otherwise defined, aromatic and non-aromatic, single and fused, rings suitably containing up to four heteroatoms in each ring, each of which is selected from oxygen, nitrogen and sulphur, which rings, may be unsubstituted or substituted by, for example, up to three substituents.
- Each ring suitably has from 4 to 7, preferably 5 or 6, ring atoms.
- a fused heterocyclic ring system may include carbocyclic rings and need include only one heterocyclic ring.
- Substituents for any heterocyclyl or heterocyclic group are suitably selected from halogen, alkyl, arylalkyl, alkoxy, alkoxyalkyl, haloalkyl, hydroxy, amino, mono- and di- N-alkyl-amino, acylamino, carboxy salts, carboxy esters, carbamoyl, mono- and di-N- alkylcarbonyl, aryloxycarbonyl, alkoxycarbonylalkyl, aryl, oxy groups, ureido, guanidino.
- sulphonylamino aminosulphonyl, alkylthio, alkylsulphinyl, alkylsulphonyl, heterocyclyl and heterocyclylalkyl.
- 'halo' includes iodo, bromo, chloro or fluoro, especially chloro or fluoro.
- Suitable derivatives of the compounds of the invention are pharmaceutically acceptable derivatives.
- Suitable derivatives of the compounds of the invention include salts and solvates.
- Suitable pharmaceutically acceptable derivatives include pharmaceutically acceptable salts and pharmaceutically acceptable solvates.
- Suitable pharmaceutically acceptable salts include metal salts, such as for example aluminium, alkali metal salts such as lithium, sodium or potassium, alkaline earth metal salts such as calcium or magnesium and ammonium or substituted ammonium salts, for example those with lower alkylamines such as triethylamine.
- hydroxy alkylamines such as 2-hydroxyethylamine, bis-(2-hydroxyethyl)-amine or tri-(2-hydroxyethyl)-amine, cycloalkylamines such as bicyclohexylamine, or with procaine. dibenzylpiperidine.
- Suitable pharmaceutically acceptable salts also includes pharmaceutically acceptable acid addition salts, such as those provided by pharmaceutically acceptable inorganic acids or organic acids.
- Suitable pharmaceutically acceptable acid addition salts provided by pharmaceutically acceptable inorganic acids includes the sulphate, nitrate, phosphate, borate, hydrochloride and hydrobromide and hydroiodide.
- Suitable pharmaceutically acceptable acid addition salts provided by pharmaceutically acceptable organic acids includes the acetate, tartrate. maleate, fumarate. malonate. citrate, succinate, lactate. oxalate. benzoate, ascorbate, methanesulphonate. ⁇ -keto glutarate and ⁇ -glycerophosphate.
- Suitable pharmaceutically acceptable solvates include hydrates.
- diabetes mellitus includes diabetes mellitus. especially Type 2 diabetes, and conditions associated with diabetes mellitus.
- condition associated with diabetes includes those conditions associated with the pre-diabetic state, conditions associated with diabetes mellitus itself and complications associated with diabetes mellitus.
- condition associated with the pre-diabetic state' includes conditions such as insulin resistance, impaired glucose tolerance and hyperinsulinaemia.
- diabetes mellitus itself include hyperglycaemia, insulin resistance and obesity. Further conditions associated with diabetes mellitus itself include hypertension and cardiovascular disease, especially atherosclerosis and conditions associated with insulin resistance. Conditions associated with insulin resistance include polycystic ovarian syndrome and steroid induced insulin resistance.
- the term 'complications associated with diabetes mellitus' includes renal disease, especially renal disease associated with Type II diabetes, neuropathy and retinopathy. glomerular sclerosis, nephrotic syndrome, hypertensive nephrosclerosis and end stage renal disease.
- a further aspect of the invention provides a process for the preparation of a compound of the invention, which process comprises reaction of a compound of formula (II):
- R and R ⁇ are as defined in formula (I) and L is a leaving group, with a compound of formula (III):
- R* and R ⁇ are as defined in formula (I); and thereafter, if required, carrying out one or more of the following optional steps:
- Suitable leaving groups, L are chloro, bromo, triflate, and hydroxy.
- the reaction between the compounds of formulae (II) and (III) is carried out in any suitable solvent, for example l-methyl-2-pyrrolidinone, tetrahydrofuran, 0.880 ammonia, or methanol, under conventional amination conditions at any temperature providing a suitable rate of formation of the required product, generally an elevated temperature, over a suitable reaction time.
- suitable reaction temperatures include those in the range of 60°C to 220°C and, as appropriate, the reflux temperature of the solvent.
- the reaction may be assisted by, for example, using temperatures at the upper end of this range, generating the anion of the compound of formula (III) in situ using, for example, sodium hydride, or by using a basic catalyst such as triethylamine.
- Conventional methods of heating also include the use of microwave heating devices, for example a microwave reactor, such as a 100 watt reactor.
- reaction products are isolated using conventional methods. Typically, the reaction mixture is cooled, the residue acidified and the products extracted using solvent extraction, suitably using an organic solvent.
- the reaction products are purified by conventional methods, such as chromatography and trituration.
- Crystalline product may be obtained by standard methods. Crystalline product may be obtained by standard methods.
- a solution of the compound of formula (II) and a compound of formula (III) in methanol is heated to reflux from between 1 to 4 days, then cooled and concentrated.
- the residue is then acidified with hydrochloric acid, and extracted with ethyl acetate.
- the organic extracts are then washed with water, brine, dried with anhydrous magnesium sulphate, and the solvent is removed.
- the product is then purified by standard methods such as trituration or chromatography, on silica gel. to afford the desired compound.
- the above mentioned conversion of a compound of formula (I) into another compound of formula (I) includes any conversion which may be effected using conventional procedures, but in particular the said conversions include any combination of:
- suitable conversions of one group R into another group R include:
- Suitable conversions of one group NR*R ⁇ into another group NRlR- ⁇ as in conversion (ii). include: converting a group NRlR J which represents arylamino into another group NR1 R3 which represents alkylamino; such conversion may be carried out using an appropriate conventional procedure, for example treating an appropriately protected compound of formula (I) with an alkylamine.
- Suitable conversions of one group R* 1 into another group Rl I, as in conversion (iv). include: (a) converting a group R 1 which represents a t-BOC-protected amino group into a group Rl 1 which represents amino, such conversion may be carried out using an appropriate conventional deprotection procedure, for example deprotecting a t-BOC- protected compound of formula (I) with trifluoroacetic acid; (b) converting a group Rl 1 which represents a carboxylic acid group into a group R 1 which represents an amide group, such conversion may be carried out using an appropriate conventional procedure, for example treating an appropriately protected compound of formula (I) with an amine in the presence of suitable activating agents such as a mixture of 1 -hydroxybenzotriazole and l-(3-dimethylaminopropyl)-3- ethylcarbodiimide; and (c) converting a group Rl I which represents alkoxycarbonyl into a group Rl I which represents carbamoy
- Suitable protecting groups in any of the above mentioned reactions are those used conventionally in the art
- the methods of formation and removal of such protecting groups are those conventional methods appropriate to the molecule being protected.
- a benzyloxy group may be prepared by treatment of the appropriate compound with a benzyl halide, such as benzyl bromide, and thereafter, if required, the benzyl group may be conveniently removed using catalytic hydrogenation or a mild ether cleavage reagent such as trimethylsilyl iodide or boron tribromide.
- a benzyloxy group may be prepared by treatment of the appropriate compound with a benzyl halide, such as benzyl bromide, and thereafter, if required, the benzyl group may be conveniently removed using catalytic hydrogenation or a mild ether cleavage reagent such as trimethylsilyl iodide or boron tribromide.
- individual isomeric forms of the compounds of formula (I) may be
- the absolute stereochemistry of compounds may be determined using conventional methods, such as X-ray crystallography.
- the derivatives of the compounds of formula (I), including salts and/or solvates, may be prepared and isolated according to conventional procedures.
- the compounds of formula (II) are known compounds or they may be prepared using methods analogous to those used to prepare such compounds such as those described in International Patent Application, Publication Number WO97/34890 and Wiley, R.H. and Slaymaker. S.C. J. Am. Chem. Soc. (80) 1385 (1958).
- the compounds of formula (II) may be inter-converted in an analogous manner to the above mentioned inter-conversions of the compounds of formula (I).
- the compounds of formula (III) are either commercially available, or are reported in the chemical literature, or are prepared by analogy with known conventional literature procedures, for example those disclosed in Chem. Ber., 1892, 25, 2977, J. Amer. Chem. Soc. 1948. 70, 4174-4177, Synthesis 1977, 859, J. Med. Chem.. 1994, 37, 3956. Synthesis 1994. 1413, and Tetrahedron. 1991, 47, 2661, or in standard reference texts of synthetic methodology such as J. March. Advanced Organic Chemistry, 3rd Edition (1985). Wiley Interscience.
- the compounds of formula (I), or pharmaceutically acceptable derivatives thereof are indicated to be useful as inhibitors of glycogen synthase kinase-3.
- the present invention further provides a compound of formula (I), or a pharmaceutically acceptable derivative thereof, for use as an inhibitor of glycogen synthase kinase-3, and especially for use in the treatment of conditions associated with a need for the inhibition of glycogen synthase kinase-3, such as diabetes, especially Type 2 diabetes, dementias, such as Alzheimer's disease and manic depression.
- the present invention also provides the use of a compound of formula (I), or a pharmaceutically acceptable derivative thereof, for the manufacture of a medicament for the treatment of conditions associated with a need for the inhibition of glycogen synthase kinase-3.
- a compound of formula (I) or a pharmaceutically acceptable derivative thereof, for the manufacture of a medicament for the treatment of conditions associated with a need for the inhibition of glycogen synthase kinase-3.
- diabetes especially Type 2 diabetes
- dementias such as Alzheimer's disease and manic depression.
- formula (I) comprises a sub-group of compounds of formula (IA).
- a compound of formula (IA), or a pharmaceutically acceptable derivative thereof, for use as an active therapeutic substance is provided.
- the invention also provides a pharmaceutical composition which comprises a compound of formula (IA). or a pharmaceutically acceptable derivative thereof, and a pharmaceutically acceptable carrier.
- the compounds of formula (I), or pharmaceutically acceptable derivatives thereof are administered as pharmaceutically acceptable compositions.
- GSK-3 inhibitors per se are potentially useful in the treatment and/or prophylaxis of mood disorders, such as schizophrenia, neurotraumatic diseases, such as acute stroke, and for the treatment and/or prophylaxis of cancer and hair loss.
- the invention provides a method for the treatment and/or prophylaxis of mood disorders, such as schizophrenia, in a mammal, such as a human, which method comprises the administration of a pharmaceutically acceptable amount of a GSK-3 inhibitor.
- the invention also provides a method for the treatment and/or prophylaxis of neurotraumatic diseases in a mammal, such as a human, which method comprises the administration of a pharmaceutically acceptable amount of a GSK-3 inhibitor.
- Neurotraumatic diseases include both open or penetrating head trauma, such as caused by surgery, or a closed head trauma injury, such as caused by an injury to the head region ischaemic stroke, including acute stroke, particularly to the brain area, transient ischaemic attacks following coronary by-pass and cognitive decline following other transient ischaemic conditions.
- a method for the treatment and/or prophylaxis of cancer in a mammal, such as a human, which method comprises the administration of a pharmaceutically acceptable amount of a GSK-3 inhibitor.
- a method for the treatment and/or prophylaxis of hair-loss in a mammal, such as a human, which method comprises the administration of a pharmaceutically acceptable amount of a GSK-3 inhibitor.
- the invention also provides the use of a GSK-3 inhibitor for the manufacture of a medicament for the treatment and/or prophylaxis of mood disorders, schizophrenia, neurotraumatic diseases, cancer or hair-loss.
- a suitable GSK-3 inhibitor is a compound of formula (I) or a pharmaceutically acceptable derivative thereof.
- the active compounds are usually administered as the sole medicament agent but they may be administered in combination with other medicament agents as dictated by the severity and type of disease being treated.
- a compound of formula (I), or a pharmaceutically acceptable derivative thereof may be used in combination with other medicament agents, especially antidiabetic agents such as insulin secretagogues.
- antidiabetic agents such as insulin secretagogues.
- sulphonylureas insulin sensitisers.
- glitazone insulin sensitisers for example thiazolidinediones
- biguanides or alpha glucosidase inhibitors or the compound of formula (I), or a pharmaceutically acceptable derivative thereof may be administered in combination with insulin.
- the said combination comprises co-administration of a compound of formula (I), or a pharmaceutically acceptable derivative thereof, and an additional medicament agent or the sequential administration of a compound of formula (I), or a pharmaceutically acceptable derivative thereof, and the additional medicament agent.
- Co-administration includes administration of a pharmaceutical composition which contains both a compound of formula (I), or a pharmaceutically acceptable derivative thereof, and the additional medicament agent or the essentially simultaneous administration of separate pharmaceutical compositions of a compound of formula (I), or a pharmaceutically acceptable derivative thereof, and the additional medicament agent.
- compositions of the invention are preferably adapted for oral administration. However, they may be adapted for other modes of administration.
- the compositions may be in the form of tablets, capsules, powders, granules, lozenges, suppositories, reconstitutable powders, or liquid preparations, such as oral or sterile parenteral solutions or suspensions.
- composition of the invention is in the form of a unit dose.
- compositions are in unit dosage form.
- a unit dose will generally contain from 0.1 to 1000 mg of the active compound.
- an effective administered amount of a compound of the invention will depend on the relative efficacy of the compound chosen, the severity of the disorder being treated and the weight of the sufferer. However, active compounds will typically be administered once or more times a day for example 2, 3 or 4 times daily, with typical total daily doses in the range of from 0.1 to 800 mg/kg/day.
- Suitable dose forms for oral administration may be tablets and capsules and may contain conventional excipients such as binding agents, for example syrup, acacia, gelatin, sorbitol. tragacanth. or polyvinylpyrrolidone; fillers, for example lactose, sugar, maize-starch, calcium phosphate, sorbitol or glycine; tabletting lubricants, for example magnesium stearate; disintegrants. for example starch, polyvinylpyrrolidone, sodium starch glycollate or microcrystalline cellulose; or pharmaceutically acceptable wetting agents such as sodium lauryl sulphate.
- binding agents for example syrup, acacia, gelatin, sorbitol. tragacanth. or polyvinylpyrrolidone
- fillers for example lactose, sugar, maize-starch, calcium phosphate, sorbitol or glycine
- tabletting lubricants for example magnesium stearate
- disintegrants for example star
- the solid oral compositions may be prepared by conventional methods of blending, filling or tabletting. Repeated blending operations may be used to distribute the active agent throughout those compositions employing large quantities of fillers. Such operations are of course conventional in the art.
- the tablets may be coated according to methods well known in normal pharmaceutical practice, in particular with an enteric coating.
- Oral liquid preparations may be in the form of, for example, emulsions, syrups, or elixirs, or may be presented as a dry product for reconstitution with water or other suitable vehicle before use. Such liquid preparations may contain conventional additives such as suspending agents, for example sorbitol, syrup, methyl cellulose, gelatin, hydroxyethylcellulose.
- fluid unit dosage forms are prepared utilizing the compound and a sterile vehicle, and, depending on the concentration used, can be either suspended or dissolved in the vehicle.
- the compound in preparing solutions the compound can be dissolved in water for injection and filter sterilized before filling into a suitable vial or ampoule and sealing.
- adjuvants such as a local anaesthetic, a preservative and buffering agents can be dissolved in the vehicle.
- the composition can be frozen after filling into the vial and the water removed under vacuum.
- Parenteral suspensions are prepared in substantially the same manner, except that the compound is suspended in the vehicle instead of being dissolved, and sterilization cannot be accomplished by filtration.
- the compound can be sterilized by exposure to ethylene oxide before suspending in the sterile vehicle.
- a surfactant or wetting agent is included in the composition to facilitate uniform distribution of the compound.
- formulations mentioned herein are carried out using standard methods such as those described or referred to in reference texts such as the British and US Pharmacopoeias, Remington's Pharmaceutical Sciences (Mack Publishing Co.), Martindale The Extra Pharmacopoeia (London, The Pharmaceutical Press) or the above mentioned publications.
- Suitable methods for preparing and suitable unit dosages for the additional medicament agent, such as the antidiabetic agent mentioned herein include those methods and dosages described or referred to in the above mentioned reference texts.
- GSK-3 Assays Types of GSK-3 assay used to test the compounds of the invention include the following:
- Type 1 The GSK-3 specific peptide used in this assay was derived from the phosphorylation site of glycogen synthase and its sequence is: YRRAAVPPSPSLSRHSSPHQ(S)EDEEE. (S) is pre-phosphorylated as is glycogen synthase in vivo and the three consensus sites for GSK-3 specific phosphorylation are underlined.
- the buffer used to make up the glycogen synthase peptide and [ ⁇ - ⁇ J P] ATP consisted of MOPS 25mM. EDTA 0.2mM, MgAcetate lOmM, Tween-20 0.01% and mercaptoethanol 7.5mM at pH 7.00.
- the compounds were dissolved in dimethyl sulphoxide (DMSO) to a final concentration of lOOmM.
- DMSO dimethyl sulphoxide
- Various concentrations were made up in DMSO and mixed with the substrate (GSK-3 peptide) solution (to a final concentration 20uM) described in the above section along with rabbit or human GSK-3 ⁇ and GSK-3 ⁇ (final concentration 0.5U/ml enzyme).
- the reactions were initiated with the addition of [ ⁇ - 33 P] ATP (500cpm/pmole) spiked into a mixture of ATP (final concentration of lO ⁇ M). After 30 min at room temperature the reaction was terminated by the addition of lO ⁇ l of H 3 PO4 / 0.01% Tween-20 (2.5%).
- a volume (lO ⁇ l) of the mixture was spotted onto P-30 phosphocellulose paper (Wallac & Berthold, EG&G Instruments Ltd, Milton Keynes).
- the paper was washed four times in H 3 PO4 (0.5%), 2 mins for each wash, air dried and the radioactive phosphate incorporated into the synthetic glycogen synthase peptide, which binds to the P-30 phosphocellulose paper, was counted in a Wallac microbeta scintillation counter.
- the phosphorvlated biotinylated peptide is then captured onto streptavidin coated SPA beads (Amersham Technology), where the signal from the 33P is amplified via the scintillant contained in the beads.
- the kinase was assayed at a concentration of 10 nM final in 25 mM MOPS buffer, pH 7.0 containing 0.01% Tween-20, 7.5 mM 2-mercaptoethanol, 10 mM Magnesium acetate, and 10 uM [ ⁇ - JJ> P]-ATP.
- the reaction was stopped by addition of 50 M EDTA solution containing the Streptavidin coated SPA beads to give a final 0.5 mgs of beads per assay well in a 384 microtiter plate format.
- 10 mM stock solutions of the compounds of the invention in 100% DMSO are generated as a first step in the screening process.
- the second step involves the creation of dose response plates where these compounds are diluted across the plate where the final low and high concentrations are to be 0.008 and 10 uM final in the kinase assay.
- the third step involves the creation of the assay plates. This is achieved by transferring the compounds from four 96 dose response plates to one 384 assay plate on the Robocon Robolab system.
- the fourth step is to perform the assay as described and count the resulting plates in the Trilux (Wallac 1450 microbeta liquid scintillation and luminescence counter).
- the most potent compounds of the present invention show IC50 values in the range of from between 10 to 100 nM.
- Example 1 3-(3-BromophenyIamino)-4-(4-chlorophenyI)-lH-pyrrole-2,5-dione
- 3-bromoaniline (2.27 mL, 0.020 mol)
- 3-chloro-4-(4-chlorophenyl)-lH- pyrrole-2.5-dione (2.02 g, 0.0083 mol; prepared by analogy with the methods described in WO97/34890 and Wiley, R.H. and Slaymaker, S.C. J. Am. Chem. Soc. (80) 1385 ( 1958)
- methanol 50 mL
- a sealed tube (comprising threaded glass tube with resealable cap) containing a mixture of 4-aminobenzophenone (0.147 g, 0.75 mmol), 3-chloro-4-(4-chlorophenyl)-lH-pyrrole- 2.5-dione (0.061 g, 0.25 mmol) and 1 -methyl-2-pyrrolidinone (0.5 mL) was irradiated in a microwave reactor for 12 minutes at 100 Watts. The mixture was diluted with aqueous hydrochloric acid (5 mL) and extracted with ethyl acetate (2 x 5 mL). The combined organic solutions were evaporated and the residue chromatographed on silica gel using dichloromethane as eluent to afford the title compound as a solid.
- Example 3 3-(3-Bromo-4-methylphenylamino)-4-(3-nitrophenyI)-lH-pyrrole-2,5-dione
- a mixture of 3-bromo-4-methylaniline (0.220 g, 1.18 mmol), 3-chloro-4-(3-nitrophenyl)- lH-pyrrole-2.5-dione (0.100 g, 0.40 mmol) and l-methyl-2-pyrrolidinone (1.0 mL) was heated in an oil bath at 200°C for 51 minutes. The mixture was diluted with aqueous hydrochloric acid (5 mL) and extracted with ethyl acetate (5 mL).
- This anhydride (0.4 g. 1.25 mmol) was suspended in a mixture of concentrated aqueous ammonium hydroxide and DMF and heated in stainless steel bomb at 130°C for 4 hours. The resulting mixture was diluted with water and extracted with dichloromethane and the dried organic solution evaporated to give a solid. This was chromatographed on silica gel using a gradient of 0-5% (v/v) of methanol in dichloromethane as eluent to afford the title compound, a solid.
- Example 6 3-(Indan-5-ylamino)-4-(3-aminophenyl)-lH-pyrrole-2,5-dione 3-(Indan-5-ylamino)-4-(3-nitrophenyl)-lH-pyrrole-2.5-dione (Table A.
- Example A359; 0.3 g, 0.9 mmol) and 10% Pd C (60 mg) in ethanol (25 mL) was hydrogenated at atmospheric temperature and pressure for 2 hours. The reaction mixture was filtered through Kieselguhr and the filtrate concentrated in vacuo to give an orange solid.
- Example 7 3-(Indan-5-yIamino)-4-(3-acetylaminophenyl)-lH-pyrrole-2,5-dione 3-(Indan-5-ylamino)-4-(3-nitrophenyl)-lH-pyrrole-2,5-dione (Table A, Example A359; 0.3 g, 0.9 mmol) and 10% Pd/C (60 mg) in ethanol (25 mL) was hydrogenated at atmospheric temperature and pressure for 2 hours. The reaction mixture was filtered through Kieselguhr and the filtrate concentrated in vacuo to give an orange solid. The crude product was taken up in dichloromethane (5 mL) and treated with acetic anhydride (85 ⁇ L.
- One arm of the flask was sealed with a septum and to the other arm was fitted a reflux condenser, topped with a multiway tap connected respectively to vacuum, a carbon monoxide cylinder and to a balloon.
- the flask was alternately evacuated and flushed with carbon monoxide, and the process repeated several times to unsure an atmosphere of carbon monoxide within the flask.
- the balloon was charged with carbon monoxide and this was then opened to the reaction flask for the duration of the reaction in order to maintain a slight positive pressure of carbon monoxide within the flask.
- Triethylamine 100 uL, 0.7 mmol
- N-(6- aminohexyl)acetamide hydrochloride (78 mg, 0.4 mmol), l-(3-dimethylamino-propyl)-3- ethylcarbodiimide hydrochloride (77 mg, 0.4 mmol) and 1 -hydroxybenzotriazole (54 mg, 0.4 mmol) and the resulting mixture stirred at room temperature for 18 hours.
- the mixture was diluted with ethyl acetate (25 mL) and washed successively with water (2 x 25 mL). saturated aqueous sodium bicarbonate solution (25 mL), water (2 x 25 mL), brine (25 mL), dried over magnesium sulphate and concentrated. The residue was redissolved in dichloromethane-methanol (1 :1 v/v), filtered and evaporated to afford the title compound as a foam.
- Example 13 3-[4-(/rfln-.-2-carboxyethenyl)phenyIamino]-4-(4-chlorophenyl)-lH-pyrrole-2,5-dione
- Example 18 3-(2-MethoxyethyIamino)-4-(4-iodophenyl)-lH-pyrrole-2,5-dione
- Triethylamine (1.1 mL, 8 mmol) was added to a stirred suspension of tert- butylchlorodimethylsilane (0.66 g, 4.4 mmol) and 3-chloro-4-(3-nitrophenyl)-lH-pyrrole- 2,5-dione (1.0 g, 4 mmol) in dichloromethane (15 mL) at room temperature. The mixture was stirred overnight then chromatographed directly on silica gel using a hexane-acetone gradient to afford the title compound.
- Examples 1 to 22 themselves are shown as examples Al, A2, A3. A424, B3, A599, FI. F2, F6, A702, A770. A772. A832. A833, D19. B25. A968. B28, 13, D36, D109 and A929 respectively in Tables A. B. D. F and I.
- Encompassing compounds of general formula (XXX- 1), wherein group R 2 of formula (I) is a phenyl ring, optionally substituted by one or more substituents R 10 and group R 3 of formula (I) is a phenyl ring, optionally substituted by one or more substituents R 11 and substituents R, R 1 , R 10 and R 1 ' are listed in Table A.
- Encompassing compounds of general formula (XXX-6), wherein group R 2 of formula (I) is a (3 -heterocyclyl) moiety (XXX-7), optionally substituted by one or more substituents R 13 and group R 3 of formula (I) is a phenyl ring, optionally substituted by one or more substituents R and substituents R, R 1 , R 11 and R 13 are listed in Table E.
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Abstract
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Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99947744A EP1119548B1 (en) | 1998-10-08 | 1999-10-05 | 3-(3-chloro-4-hydroxyphenylamino)-4-(2-nitrophenyl)-1h-pyrrole-2,5-dione as glycogen synthase kinase-3 inhibitor (gsk-3) |
AT99947744T ATE284387T1 (en) | 1998-10-08 | 1999-10-05 | 3-(3-CHLORO-4-HYDROXYPHENYLAMINO)-4-(2-NITROPHENYL)-1H-PYRROL-2,5-DIONE AS A GLYCOGEN SYNTHASE KINASE-3 INHIBITOR (GSK-3) |
DE69922526T DE69922526T2 (en) | 1998-10-08 | 1999-10-05 | 3- (3-CHLORO-4-HYDROXYPHENYLAMINO) -4- (2-NITROPHENYL) -1H-PYRROL-2,5-DION AS GLYCOGENIC SYNTHASE KINASE-3 INHIBITOR (GSK-3) |
JP2000575836A JP2002527419A (en) | 1998-10-08 | 1999-10-05 | Pyrrole-2,5-diones as GSK-3 inhibitors |
AU61116/99A AU6111699A (en) | 1998-10-08 | 1999-10-05 | Novel method and compounds |
ES99947744T ES2234300T3 (en) | 1998-10-08 | 1999-10-05 | 3- (3-CHLORO-4-HYDROXYPHENYLAMINE) -4- (2-NITROPHENYL) -1H-PIRROL-2,5-DIONA AS A GLUCOGEN INHIBITOR CINASA-3 (GSK-3) SYNTHEASE. |
HK02100210.2A HK1038564A1 (en) | 1998-10-08 | 2002-01-11 | Pyrrole-2,5-diones as gsk-3 inhibitors |
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GBGB9821974.4A GB9821974D0 (en) | 1998-10-08 | 1998-10-08 | Novel method and compounds |
GBGB9827521.7A GB9827521D0 (en) | 1998-12-14 | 1998-12-14 | Novel method and compounds |
GBGB9827883.1A GB9827883D0 (en) | 1998-12-17 | 1998-12-17 | Novel compounds |
GBGB9905518.8A GB9905518D0 (en) | 1999-03-10 | 1999-03-10 | Novel method and compound |
GBGB9907086.4A GB9907086D0 (en) | 1999-03-26 | 1999-03-26 | Novel compounds |
GB9827883.1 | 1999-08-16 | ||
GB9827521.7 | 1999-08-16 | ||
GBGB9919362.5A GB9919362D0 (en) | 1999-08-16 | 1999-08-16 | Novel method and compounds |
GB9919362.5 | 1999-08-16 | ||
GB9821974.4 | 1999-08-16 | ||
GB9907086.4 | 1999-08-16 | ||
GB9905518.8 | 1999-08-16 |
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US09807066 A-371-Of-International | 2001-06-18 | ||
US10/446,553 Continuation US6719520B2 (en) | 1998-10-08 | 2003-05-28 | Method and compounds |
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WO2000021927A2 true WO2000021927A2 (en) | 2000-04-20 |
WO2000021927A3 WO2000021927A3 (en) | 2000-07-13 |
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PCT/GB1999/003280 WO2000021927A2 (en) | 1998-10-08 | 1999-10-05 | Pyrrole-2,5-diones as gsk-3 inhibitors |
Country Status (11)
Country | Link |
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EP (1) | EP1119548B1 (en) |
JP (1) | JP2002527419A (en) |
AR (1) | AR020727A1 (en) |
AT (1) | ATE284387T1 (en) |
AU (1) | AU6111699A (en) |
DE (1) | DE69922526T2 (en) |
ES (1) | ES2234300T3 (en) |
HK (1) | HK1038564A1 (en) |
MA (1) | MA26697A1 (en) |
PE (1) | PE20001093A1 (en) |
WO (1) | WO2000021927A2 (en) |
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Also Published As
Publication number | Publication date |
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AU6111699A (en) | 2000-05-01 |
MA26697A1 (en) | 2004-12-20 |
ES2234300T3 (en) | 2005-06-16 |
AR020727A1 (en) | 2002-05-29 |
ATE284387T1 (en) | 2004-12-15 |
WO2000021927A3 (en) | 2000-07-13 |
HK1038564A1 (en) | 2002-03-22 |
JP2002527419A (en) | 2002-08-27 |
DE69922526T2 (en) | 2005-06-02 |
PE20001093A1 (en) | 2000-12-22 |
EP1119548A1 (en) | 2001-08-01 |
DE69922526D1 (en) | 2005-01-13 |
EP1119548B1 (en) | 2004-12-08 |
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