WO2013038136A1 - BI-AROMATIC AND TRI-AROMATIC COMPOUNDS AS NADPH OXIDASE 2 (Nox2) INHIBITORS - Google Patents

BI-AROMATIC AND TRI-AROMATIC COMPOUNDS AS NADPH OXIDASE 2 (Nox2) INHIBITORS Download PDF

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WO2013038136A1
WO2013038136A1 PCT/GB2012/000725 GB2012000725W WO2013038136A1 WO 2013038136 A1 WO2013038136 A1 WO 2013038136A1 GB 2012000725 W GB2012000725 W GB 2012000725W WO 2013038136 A1 WO2013038136 A1 WO 2013038136A1
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hydroxy
dihydroxybenzyl
compound
heterocyclic ring
formula
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PCT/GB2012/000725
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English (en)
French (fr)
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Jian-mei LI
Brendan HOWLIN
Daniel Nathan MEIJLES
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The University Of Surrey
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Priority to EP12772354.2A priority Critical patent/EP2755954A1/en
Priority to US14/345,084 priority patent/US20150045387A1/en
Publication of WO2013038136A1 publication Critical patent/WO2013038136A1/en

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D263/00—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings
    • C07D263/02—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings
    • C07D263/30—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D263/32—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C235/00—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms
    • C07C235/42—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings and singly-bound oxygen atoms bound to the same carbon skeleton
    • C07C235/44—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings and singly-bound oxygen atoms bound to the same carbon skeleton with carbon atoms of carboxamide groups and singly-bound oxygen atoms bound to carbon atoms of the same non-condensed six-membered aromatic ring
    • C07C235/48—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings and singly-bound oxygen atoms bound to the same carbon skeleton with carbon atoms of carboxamide groups and singly-bound oxygen atoms bound to carbon atoms of the same non-condensed six-membered aromatic ring having the nitrogen atom of at least one of the carboxamide groups bound to an acyclic carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C257/00—Compounds containing carboxyl groups, the doubly-bound oxygen atom of a carboxyl group being replaced by a doubly-bound nitrogen atom, this nitrogen atom not being further bound to an oxygen atom, e.g. imino-ethers, amidines
    • C07C257/04—Compounds containing carboxyl groups, the doubly-bound oxygen atom of a carboxyl group being replaced by a doubly-bound nitrogen atom, this nitrogen atom not being further bound to an oxygen atom, e.g. imino-ethers, amidines without replacement of the other oxygen atom of the carboxyl group, e.g. imino-ethers
    • C07C257/06—Compounds containing carboxyl groups, the doubly-bound oxygen atom of a carboxyl group being replaced by a doubly-bound nitrogen atom, this nitrogen atom not being further bound to an oxygen atom, e.g. imino-ethers, amidines without replacement of the other oxygen atom of the carboxyl group, e.g. imino-ethers having carbon atoms of imino-carboxyl groups bound to hydrogen atoms, to acyclic carbon atoms, or to carbon atoms of rings other than six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/76—Ketones containing a keto group bound to a six-membered aromatic ring
    • C07C49/82—Ketones containing a keto group bound to a six-membered aromatic ring containing hydroxy groups
    • C07C49/83—Ketones containing a keto group bound to a six-membered aromatic ring containing hydroxy groups polycyclic
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
    • C07C69/84—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring of monocyclic hydroxy carboxylic acids, the hydroxy groups and the carboxyl groups of which are bound to carbon atoms of a six-membered aromatic ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
    • C07C69/94—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring of polycyclic hydroxy carboxylic acids, the hydroxy groups and the carboxyl groups of which are bound to carbon atoms of six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D217/00—Heterocyclic compounds containing isoquinoline or hydrogenated isoquinoline ring systems
    • C07D217/22—Heterocyclic compounds containing isoquinoline or hydrogenated isoquinoline ring systems 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 carbon atoms of the nitrogen-containing ring
    • C07D217/24—Oxygen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D217/00—Heterocyclic compounds containing isoquinoline or hydrogenated isoquinoline ring systems
    • C07D217/22—Heterocyclic compounds containing isoquinoline or hydrogenated isoquinoline ring systems 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 carbon atoms of the nitrogen-containing ring
    • C07D217/26—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen

Definitions

  • the present invention relates to novel bi- and tri- aromatic compounds, their preparation, pharmaceutical compositions comprising them, and their use as medicaments for the treatment of diseases or conditions due to their inhibiting effect on nicotinamide adenine dinucleotide phosphate oxidase 2 (NADPH oxidase 2).
  • NADPH oxidase 2 nicotinamide adenine dinucleotide phosphate oxidase 2
  • ROS reactive oxygen species
  • H 2 0 2 and 0 2 ' by-products of normal cellular metabolism.
  • Nicotinamide adenine dinucleotide phosphate oxidase (NADPH oxidase or NOX) is a multi-component enzyme expressed in almost every cell type in our body and is a major source of ROS generation.
  • Excessive ROS have been identified as major contributors to damage in biological organisms, so-called "oxidative stress", and are recognized as a key component for the development of many diseases, such hypertension, atherosclerosis, obesity, insulin resistance, diabetes, respiratory disorders, liver diseases, inflammation, and conditions such as ageing.
  • the Nox family contains at least 7 isoforms (Noxl to 5 and duoxl and duox2).
  • the Nox2 enzyme also called gp91 phox
  • gp91 phox is different from other members of the Nox family in that it is a highly glycosylated protein, and requires the presence of regulatory subunits, i.e., p40 phox , p47 ptlox p67 phox and racl, for generating 0 2 ⁇
  • regulatory subunits i.e., p40 phox , p47 ptlox p67 phox and racl
  • Nox2 the activity and expression of the Nox2 enzyme can be up-regulated under pathophysiological conditions, and excessive production of 0 2 " by Nox2 outstrips endogenous antioxidant defence and causes oxidative damage to cells and tissues.
  • 0 2 " can also serve as a precursor for the generation of other ROS, i.e., hydrogen peroxide (H 2 0 2 ) and peroxynitrite (ONOO " ), which may cause further damage to tissues.
  • H 2 0 2 hydrogen peroxide
  • ONOO peroxynitrite
  • Cardiovascular diseases such as atherosclerosis, hypertension and heart failure, are major causes of death in the world and are pre-di ' sposed by endothelial dysfunction characterized by excessive ROS production before the onset of disease symptoms (3)-
  • Neurodegenerative diseases such as Parkinson's disease, Alzheimer's disease and vascular dementia, are associated with oxidative damage to brain cells and the nervous system (4).
  • Oxidative stress has emerged as a strong pathogenic co-factor in the development of long-term complications of diabetes, such as atherosclerosis, nephropathy and retinopathy (5), (6).
  • Respiratory disorders and lung diseases Lung cells also abundantly express several isoforms of the Nox family, including Nox2. Enhanced ROS production contributes to the pathogenesis of many lung diseases, such as acute respiratory distress syndrome, bronchopulmonary dysplasia, emphysema, idiopathic pulmonary fibrosis, and cancer (7).
  • Kidney diseases The kidney is vulnerable to oxidative damage. Although the origin of increased ROS generation in renal diseases is multi-factorial, it is well known that the kidney expresses several isoforms of the Nox family and generates ROS, and oxidative damage plays a crucial role in renal diseases and renal failure.
  • Ageing and age-related organ dysfunction Emerging evidence has shown that ageing-associated organ disorders are related closely to increased ROS formation in various organs (10).
  • Nox2- derived ROS is involved in the pathogenesis of several diseases and medical conditions. It would therefore be desirable to provide Nox2 specific inhibitors as a novel approach to inhibit or reduce ROS production in cells and thereby prevent or treat numerous diseases such as cardiovascular diseases, respiratory diseases, inflammatory diseases, cancer, ageing and age related disorders, kidney diseases, neurodegenerative diseases, diabetes and complications arising from diabetes.
  • the invention accordingly provides novel compounds that are inhibitors of NADPH oxidases, in particular Nox2, and that therefore find use in the treatment of a wide variety of diseases.
  • a first aspect of the invention provides a bi- or tri- aromatic compound according to formula (I)
  • Ai, A 2 and x are as defined below, as well as pharmaceutically acceptable salts, metabolites and prodrugs thereof.
  • a second aspect of the invention provides bi- or tri-aromatic compound according to formula (II)
  • R 1 to R 10 and X are as defined below, as well as pharmaceutically acceptable salts, metabolites and prodrugs thereof.
  • a third aspect of the invention provides bi- and tri-aromatic compounds according to formula (I) or formula (II), and pharmaceutically acceptable salts, metabolites and prodrugs thereof, for use as a medicament.
  • a fourth aspect of the invention provides a pharmaceutical composition
  • a pharmaceutical composition comprising at least one bi- or tri-aromatic compound according to the present invention, or a pharmaceutically acceptable salt, metabolite or prodrug thereof, in combination with a pharmaceutically acceptable carrier, diluent or excipient.
  • a fifth aspect of the invention provides a method for treating a subject suffering from a disease or condition selected from: cardiovascular diseases, respiratory diseases, inflammatory diseases, cancers, ageing and age related disorders, kidney diseases, neurodegenerative diseases, diabetes and conditions associated with diabetes.
  • the method comprises administering to a subject in need thereof a bi- or tri-aromatic compound according to formula (I) or formula (II), wherein A lf A 2 , R ⁇ -R 10 and X are as defined below, including pharmaceutically acceptable salts, metabolites and prodrugs thereof.
  • a sixth aspect of the invention provides a bi- or tri-aromatic compound according to formula (I) or formula (II), wherein Ai, A 2 , R ⁇ 10 and X are as defined below, including pharmaceutically acceptable salts, metabolites and prodrugs thereof, for use in the treatment of a disease or condition selected from: cardiovascular diseases, respiratory diseases, inflammatory diseases, cancers, ageing and age related disorders, kidney diseases, neurodegenerative diseases, diabetes and conditions associated with diabetes.
  • a seventh aspect of the invention provides processes for the preparation of bi- or tri- aromatic compounds according to formula (I) and formula (II), wherein Ai, A 2 , R ⁇ 10 and X are as defined below.
  • alkyl when used alone or in combination with other terms means a linear or branched saturated aliphatic hydrocarbon chain of 1-20 carbon atoms, including alkyl groups having the following range of carbon atoms: C1-C10, C1-C8, C1-C6 and C1-C4.
  • Non-limiting examples of alkyl groups include methyl, ethyl, n-propyl, i-propyl, n-butyl, s-butyl, i-butyl, t-butyl, n-pentyl, 1 -ethylpropyl, 2-methylbutyl, 3-methylbutyl, 2,2-dimethylpropyl, n-hexyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, n-heptyl, 2-methylhexyl, 3- methylhexyt, 4-methy!hexyl, 5-methylhexyl, n-hepty), n-octy), n-nony), n-decyl, tetrahydrogeranyl, n-dodecyl, n-tridecyl, n-tetradecyl, n-pentadecyl, n-he
  • aryl when used alone or in combination with other terms means an unsaturated aromatic carbocycfic group of from 6 to 14 carbon atoms having a single ring or multiple condensed rings.
  • Non- limiting examples of aryl groups include phenyl, naphthyl, indene and the like.
  • arylalkyl when used alone or in combination with other terms means an alkyl having an aryl substituent.
  • Non- limiting examples include benzyl, phenethyl and the like.
  • heterocyclic ring when used alone or in combination with other terms means a monocyclic or bicyclic fused ring of from 4 to 14 carbon atoms wherein one or more carbon atoms is replaced with a heteroatom selected from: N, 0 and S.
  • Non-limiting examples of unsaturated and partially unsaturated heterocyclic rings are: imidazole, pyrazole, oxazole, isoxazole, 1,3,4-oxadiazole, thiazole, isothiazole, pyridine, indole, thiophene, benzopyranone, thiazole, furan, quinoline, isoquinoline, pyrimidine, pyrazine, tetrazole, pyrazole, oxadidiazole, oxazine, triazine, tetrazine and the like.
  • Non-limiting examples of saturated heterocyclic rings are; pyrrolidine, oxolane, thiatane, oxazolidine, isoxazolidine, imidazolidine, pyrazolidine, thiazolidine, isothiazolidine, dioxolane, dithio!ane, morpholine, trioxane and the like.
  • halogen refers to fluoro, chloro, bromo and iodo atoms.
  • substituted means that a H atom on a C atom is replaced with a named substituent, e.g. hydroxyl.
  • cardiovascular disorder or disease includes atherosclerosis, hypertension, heart failure including congestive heart faWure, ischemic heart disease, coronary heart disease, peripheral artery disease, restenosis, myocardial infarction, thrombotic events including deep vein thrombosis and cardiovascular complications of Type I or Type II diabetes.
  • respiratory disease includes bronchial asthma, bronchitis, allergic rhinitis, adult respiratory syndrome, cystic fibrosis, lung viral infection (influenza), pulmonary hypertension, idiopathic pulmonary fibrosis and chronic obstructive pulmonary diseases (COPD).
  • neurodegenerative disease comprises a disease or a state characterized by a central nervous system (CNS) degeneration or alteration, especially at the level of the neurons such as Alzheimer's disease, Parkinson's disease, Huntington's disease, amyotrophic lateral sclerosis, epilepsy and muscular dystrophy.
  • CNS central nervous system
  • kidney disease or disorder includes diabetic nephropathy, renal failure, glomerulonephritis, nephrotoxicity of aminoglycosides and platinum compounds and hyperactive bladder.
  • inflammatory disease or disorder includes inflammatory bowel disease, sepsis, septic shock, pancreatitis, shock induced by trauma, allergic rhinitis, arthritis, including rheumatoid and juvenile arthritis, psoriasis, cystic fibrosis, stroke, bronchitis, bronchiolitis, Lyme's disease, articular cell rheumatism, disorders by repetitive use (typing), hypertrophic osteoarthropathy, systemic multiple sclerosis, Crohn's disease and chronic inflammatory bowel diseases (IBD).
  • IBD chronic inflammatory bowel diseases
  • cancer includes colon carcinoma, pancreatic cancer, breast cancer, ovarian cancer, renal cancer, prostatic carcinoma, cervical cancer, lung cancer and bladder cancer.
  • subject refers to mammals, including humans, primates, animals such as cattle, horses, dogs and the like.
  • treatment includes prevention, reduction, amelioration or elimination of the disorder or condition.
  • inhibitor as used herein means a compound that inhibits completely or partially the activity of NADPH oxidase and/or inhibits or reduces the generation of ROS.
  • pharmaceutically acceptable means being useful in preparing a pharmaceutical composition that is generally safe, non-toxic and neither biologically nor otherwise undesirable and includes being useful for veterinary use as well as human pharmaceutical use.
  • Suitable pharmaceutically acceptable salts may include acid addition salts which may, for example, be formed by mixing a solution of a compound of the invention with a solution of a pharmaceutically acceptable acid such as hydrochloric acid, sulfuric acid, fumaric acid, maleic acid, succinic acid, acetic acid, benzoic acid, citric acid, tartaric acid, carbonic acid or phosphoric acid.
  • suitable pharmaceutically acceptable salts thereof may include alkali metal salts (e. g., sodium or potassium salts); alkaline earth metal salts (e. g., calcium or magnesium salts); and salts formed with suitable organic ligands (e.
  • ammonium / quaternary ammonium and amine cations formed using counteranions such as halide, hydroxide, carboxylate, sulfate, phosphate, nitrate, aikyl sulfonate and aryl sulfonate).
  • compositions include but are not limited to acetate, adipate, alginate, ascorbate, aspartate, benzenesulfonate, benzoate, bicarbonate, bisulfate, bitartrate, borate, bromide, butyrate, calcium edetate, camphorate, camphorsulfonate, camsylate, carbonate, chloride, citrate, clavulanate, cyclopentanepropionate, digluconate, dihydrochloride, dodecylsulfate, edetate, edisylate, estolate, esylate, ethanesuffonate, formate, fumarate, gluceptate, glucoheptonate, gluconate, glutamate, glycerophosphate, g!ycoly!arsanilate, hemisulfate, heptanoate, hexanoate, hexylresorc
  • metabolite means any intermediate or product resulting from metabolism of a compound according to the invention.
  • prodrug means a functional derivative of a compound according to the invention that has a chemically or metabolically decomposable group, such as an ester or an amide, that is biotransformed in the body to form the active drug having NADPH oxidase inhibiting activity.
  • a chemically or metabolically decomposable group such as an ester or an amide
  • the compounds of the invention may have one or more asymmetric carbon atoms and may occur as racemates, racemic mixtures and as individual enantiomers or diastereomers. All such isomeric forms are included within the present invention, including mixtures thereof. Cis (E) and trans (Z) isomerism may also occur.
  • the present invention includes the individual stereoisomers of the compounds of the invention and where appropriate, the individual tautomeric forms thereof, together with mixtures thereof. Separation of diastereoisomers or cis and trans isomers may be achieved by conventional techniques, e.g. by fractional crystallisation, chromatography or H.P.L.C.
  • a stereoisomeric mixture of the compounds may also be prepared from a corresponding optically pure intermediate or by resolution, such as H.P.L.C. of the corresponding racemate using a suitable chiral support or by fractional crystallisation of the diastereoisomeric salts formed by reaction of the corresponding racemate with a suitable optically active acid or base, as appropriate.
  • LHOOl refers to the compound (2,3,-dihydroxyphenyl) methyl 4-hydroxy-3-(hydroxyrnethyl) benzoate
  • Figure 1 is a dose response curve showing the effect of LMHOOl on NADPH - dependent 0 2 " production by cell homogenates (0.1 mg protein/well) of mouse microvascular endothelial cells (SVEC4-10).
  • Figure 3 is a graph showing the effect of LMHOOl (2 week, IP injection) on bone marrow hematopoietic stem cell proliferation in mice.
  • Wild-type mice C57BL6/J
  • LMHOOl at 5 months of age
  • Bone marrow hematopoietic stem cells were isolated and test for cell proliferation by a MTS assay kit (Promega).
  • MTS assay kit Promega
  • Figure 6 is a graph showing the kinetic measurement of 0 2 " production before and after the addition of PMA (100 ng/m() by differentiated HL60 human neutrophils.
  • LMHOOl (0-10 ⁇ ) was added 5 minutes before the measurement of 0 2 " production by lucigenin (5 ⁇ ) - chemiluminescence.
  • Kinetic readings were taken every 2 minutes for a total of 60 minutes.
  • Figure 7 is a graph showing no cytotoxicity of LMHOOl on living mouse microvascular endothelial cells (SVEC4-10) and human liver hepatocyte cells (HepG2), assessed by trypan blue exclusion and viable cell number counting.
  • SVEC4-10 living mouse microvascular endothelial cells
  • HepG2 human liver hepatocyte cells
  • Figure 8 is a graph showing no cytotoxicity of LMHOOl on living mouse microvascular endothelial cells (SVEC4-10 cells) and human liver hepatocyte cells (HepG2 cells), assessed by means of an MTT assay.
  • Cells were cultured with LMHOOl (5 and 10 ⁇ ) for 24h.
  • Figure 9 shows a comparison of the inhibitory effects of different ROS generating enzyme inhibitors on acute TNFa-induced 0 2 " production by microvascular endothelial cells (SVEC4-10).
  • SVEC4-10 cells were stimulated with TNFa (100 U/ml) for 45 min.
  • Cell homogenates were detected for 0 2 ' production in the presence of NADPH (100 pM) by lucigenin-chemiluminescence (A).
  • Figure 10 is a graph showing the effects of LMH001 in culture on basal and angiotensin II induced 0 2 " production by microvascular endothelial cells (SVEC4-10).
  • LMH001 24h in culture
  • FIG 11 is a graph showing the effects of LMH001 in culture on normal glucose level versus high glucose level-induced 0 2 " production by human pulmonary endothelial cells (HPMEC).
  • HP EC were cultured in the medium with normal level of glucose (5mM) or with high level of glucose (40mM) in the presence or absence of L H001 (5 ⁇ ) for 24 h.
  • LMH001 24h in culture
  • Figure 12 shows the effects of LMH001 on EGF-induced Cy " production and cell proliferation in culture on human lung alveolar epithelial cancer cells (A549 cells).
  • A549 cells were seeded at equal number the day before experiments and then stimulated with or without epithelial growth factor (EGF, 10 ng/ml) for 24 h in the presence or absence of LMH001 (5 ⁇ ). Cells were then trypsinized and counted. Cell homogenates were used for measuring Cy " production by lucigenin- chemiluminescence in the presence of NADPH (100 pM). Compared to control cells (medium only), LMH001 alone had no significant effect on A549 cell Cy " production and cell proliferation. However, LMH001 inhibited completely EGF-induced Cy " production and A549 cell proliferation.
  • EGF epithelial growth factor
  • Figure 13 shows the inhibitory effect of LHM036 on Cy " production by human cells.
  • Figure 14 shows no inhibitory effect of LHM001 on normal cell proliferation under physiological condition examined by a MTS assay.
  • Ai and A 2 are independently selected from: phenyl, pyridinyl, naphthyl and quinolinyl;
  • a 2 is substituted by at least two OH groups
  • Ai and A 2 are optionally substituted by one or more groups selected from: H, OR 1 *, NR 15 R 16 , R 17 and halogen; wherein
  • R 14 , R 15 and R 16 are each independently selected from: H and alkyl;
  • R 17 is alkyl, aryl or arylalkyl, where each group is optionally substituted by one or more groups selected from: OR 14 , NR 15 R 36 and halogen, where R 14 , R 15 and R 16 are as defined;
  • X is a 5 or 6-membered unsaturated, saturated or partially unsaturated carbocyclic or heterocyclic ring, wherein the heterocyclic ring has 1, 2, 3, or 4 heteroatoms selected from: 0, N and S, or
  • X is a group of the formula below
  • R u is 0, S or NH
  • R 12 and R 13 are independently selected from: 0, S, NH and CH 2 ; in any stereochemical form, or a mixture of any stereochemical forms in any ratios; or a pharmaceutically acceptable salt, metabolite, prodrug, or a mixture thereof.
  • R 1 , R 2 , R 3 , R ⁇ R 5 and R 7 , R 8 , R 9 and R 10 are each independently selected from: H, OR 14 , NR 15 R 16 , R 17 and halogen;
  • R , R 15 and R 16 are each independently selected from: H and alkyl
  • R 17 is alkyl, aryl or arylalkyl, where each group is optionally substituted by one or more groups selected from: OR M , NR 15 R 16 and halogen, where R M , R 15 and R 16 are as defined; or
  • R 2 and R 3 together with the respective carbon atoms to which they are attached, form a 5- or 6-membered unsaturated, saturated or partially unsaturated carbocyclic or heterocyclic ring, wherein the heterocyclic ring has 1, 2, 3, or 4 heteroatoms selected from: O, N and S, and wherein the carbocyclic or heterocyclic ring is optionally substituted by one or more groups selected from: OR 14 , NR 15 R 16 , R 17 and halogen, where R 14 , R 15 , R 16 and R 17 are as defined; or
  • R 3 and R 4 together with the respective carbon atoms to which they are attached, form a 5- or 6-membered unsaturated, saturated or partially unsaturated carbocyclic or heterocyclic ring, wherein the heterocyclic ring has 1, 2, 3, or 4 heteroatoms selected from: 0, N and S, and wherein the carbocyclic or heterocyclic ring is optionally substituted by one or more of groups selected from: OR 14 , NR 15 R 16 , R 17 and halogen, where R 14 , R 1S , R 36 and R 17 are as defined; or
  • R 8 and R 9 together with the respective carbon atoms to which they are attached, form a 5- or 6-membered unsaturated, saturated or partially unsaturated carbocyclic or heterocyclic ring, wherein the heterocyclic ring has 1, 2, 3, or 4 heteroatoms selected from: O, N and S, and wherein the carbocyclic or heterocyclic ring is optionally substituted by one or more groups selected from: OR 14 , NR 15 R 16 R 17 and halogen, where R 14 , R 15 , R 16 and R 17 are as defined; or
  • R 9 and R 10 together with the respective carbon atoms to which they are attached, form a 5- or 6-membered unsaturated, saturated or partially unsaturated carbocyclic or heterocyclic ring, wherein the heterocyclic ring has 1, 2, 3, or 4 heteroatoms selected from: 0, N and S, and wherein the carbocyclic or heterocyclic ring is optionally substituted by one or more groups selected from: OR 14 , NR 15 R 16 , R 17 and halogen, where R 14 , R 15 , R 16 and R 17 are as defined;
  • R 6 is N or CH;
  • X is a 5 or 6-membered unsaturated, saturated or partially unsaturated carbocyclic or heterocyclic ring, wherein the heterocyclic ring has 1, 2, 3, or 4 heteroatoms selected from: O, N and S, or
  • X is a group of the formula below
  • R u is 0, S or NH
  • R 12 and R 13 are independently selected from: O, S, NH and CH 2 ; in any stereochemical form, or a mixture of any stereochemical forms in any ratios; or a pharmaceutically acceptable salt, metabolite, prodrug, or a mixture thereof.
  • R 1 , R 2 , R 3 , R 4 , R 5 R 7 , R 8 , R 9 and R 10 are each independently selected from: H, OH, alkyl and aralkyl, where the alkyl and arylalkyl groups are optionally independently substituted by 1, 2 or 3 groups selected from: OH and hydroxyalky); or
  • R 2 and R 3 together with the respective carbon atoms to which they are attached, form a 6-membered unsaturated carbocyclic ring, optionally substituted by one or more groups selected from: OH, alkyl and hydroxyalkyl; or R 3 and R 4 , together with the respective carbon atoms to which they are attached, form a 6-membered unsaturated carbocyclic ring, optionally substituted by one or more groups selected from: OH, alkyl and hydroxyalkyl; or
  • R 8 and R 9 together with the respective carbon atoms to which they are attached, form a 6-membered unsaturated or partially unsaturated carbocyclic or heterocyclic ring, wherein the heterocyclic ring has 1, 2 or 3 heteroatoms selected from: 0, N and S, and wherein the carbocyclic or heterocyclic ring is optionally substituted by one or more groups selected from: OH, alkyl, hydroxyalkyl, benzyl, optionally substituted by 1 or 2 OH and phenyl, optionally substituted by 1 or 2 OH; or
  • R 9 and R 10 together with the respective carbon atoms to which they are attached, form a 6-membered unsaturated carbocyclic ring, optionally substituted by one or more groups selected from: OH, alkyl and hydroxyalkyl;
  • R 6 is N or CH
  • X is a 5-membered unsaturated or partially unsaturated heterocyclic ring having 1, 2 or 3 heteroatoms selected from: 0, N and S, or
  • X is a group of the formula below
  • R 11 is 0 or NH
  • R is O, NH or CH 2 ;
  • R is CH 2 ; in any stereochemical form, or a mixture of any stereochemical forms in any ratios; or a pharmaceutically acceptable salt, metabolite, prodrug, or a mixture thereof.
  • the invention provides a compound of the formula (III) below
  • R 1 to R 5 and R 7 , R 8 and R 10 are independently selected from: H, OH, alkyl and hydroxyalkyl;
  • R 9 is selected from: H, OH, alky and benzyl, where the alkyl and benzyl groups are optionally substituted by 1 or 2 OH; or
  • R 2 and R 3 together with the respective carbon atoms to which they are attached, form a 6-membered unsaturated carbocydic ring, optionally substituted by one or more groups selected from: OH, alkyl and hydroxyalkyl; or
  • R 3 and R 4 together with the respective carbon atoms to which they are attached, form a 6-membered unsaturated carbocydic ring, optionally substituted by one or more of the groups: OH, alkyl and hydroxyalkyl; B2012/000725
  • R 8 and R 9 together with the respective carbon atoms to which they are attached, form a 6-membered unsaturated or partially unsaturated carbocyclic or heterocyclic ring, wherein the heterocyclic ring has 1 or 2 heteroatoms selected from: 0, N and S, and wherein the carbocyclic or heterocyclic ring is optionally substituted by one or more of the groups: OH, alkyl and hydroxyalkyl, benzyl, optionally substituted by 1 or 2 OH and phenyl, optionally substituted by 1 or 2 OH;
  • R 6 is N or CH
  • R 11 is 0 or NH
  • R 12 is 0, NH or CH 2 ;
  • R 13 is CH 2 ; in any stereochemical form, or a mixture of any stereochemical forms in any ratios; or a pharmaceutically acceptable salt, metabolite, prodrug, or a mixture thereof.
  • the invention provides a compound of the formula (IV) below
  • R 1 to R 5 and R 7 to R 10 are independently selected from: H, OH, aikyi and hydroxyalkyl; or
  • R 8 and R 9 together with the respective carbon atoms to which they are attached, form a 6-membered unsaturated carbocyclic ring, optionally substituted by one or more groups selected from: OH, alkyl and hydroxyalkyl; or
  • R 9 and R 10 together with the respective carbon atoms to which they are attached, form a 6-membered unsaturated carbocyclic ring, optionally substituted by one or more groups selected from: OH, alkyl and hydroxyalkyl;
  • R 6 is N or CH; the atoms z, y and w are independently selected from: C, 0, N and S; the dashed line represents an optional bond; in any stereochemical form, or a mixture of any stereochemical forms in any ratios; or a pharmaceutically acceptable salt, metabolite, prodrug, or a mixture thereof.
  • R 1 and R 2 are OH and R 3 , R 4 and R 5 are H; or R 4 and R 5 are OH and R 1 , R 2 and R 3 are H.
  • R s and R 9 are independently selected from: methyl, hydroxym ethyl and OH; and R 7 and R 10 are H.
  • R 11 is 0, R 12 is 0 and R 13 is CH 2 .
  • X is a 5- membered unsaturated or partially unsaturated heterocyclic ring having a N and a O heteroatom.
  • R 2 and R 3 together with the respective carbon atoms to which they are attached, form a 6- membered unsaturated carbocyclic ring, optionally substituted by 1, 2 or 3 OH.
  • Compounds of the present invention include in particular those selected from:
  • Compounds of the present invention further include in particular those selected from:
  • a preferred compound of the formula (III) comprises one or more of the characteristics identified below:
  • a preferred compound of the formula (IV) comprises one or more of the characteristics identified below:
  • the invention provides a compound according to formula (I), (II), (III) or (IV), or a pharmaceutically acceptable salt, metabolite, prodrug, or a mixture thereof, for use as a medicament.
  • the invention provides the use of a compound according to formula (I), (II) (III) or (IV), or a pharmaceutically acceptable salt, metabolite, or prodrug thereof, preferably a therapeutically acceptable amount thereof, in the manufacture of a medicament for the treatment of a disease or condition selected from: cardiovascular diseases, respiratory diseases, inflammatory diseases, cancer, ageing and age related disorders, kidney diseases, neurodegenerative diseases, diabetes and conditions associated with diabetes.
  • a disease or condition selected from: cardiovascular diseases, respiratory diseases, inflammatory diseases, cancer, ageing and age related disorders, kidney diseases, neurodegenerative diseases, diabetes and conditions associated with diabetes.
  • the invention provides a compound according to formula (I), (II) (III) or (IV), or a pharmaceutically acceptable salt, metabolite, prodrug, or a mixture thereof, for use in the treatment of a disease or condition selected from: cardiovascular diseases, respiratory diseases, inflammatory diseases, cancer, ageing and age related disorders, kidney diseases, neurodegenerative diseases, diabetes and conditions associated with diabetes.
  • a disease or condition selected from: cardiovascular diseases, respiratory diseases, inflammatory diseases, cancer, ageing and age related disorders, kidney diseases, neurodegenerative diseases, diabetes and conditions associated with diabetes.
  • the invention provides a method for treating a subject suffering from a disease or condition selected from: cardiovascular diseases, respiratory diseases, inflammatory diseases, cancer, ageing and age related disorders, kidney diseases, neurodegenerative diseases, diabetes and conditions associated with diabetes, the method comprising administering to the subject in need thereof a compound of the formula (I), (II), (III) or (IV), or a pharmaceutically acceptable salt, metabolite, prodrug, or a mixture thereof.
  • the compounds according to the invention are for use in the treatment of a disease or medical condition in an animal, preferably a mamma ) , more preferably a human.
  • the compounds according to the invention are for use in the treatment of a disease or medical condition in a non- human mammal, such as a dog, cat, horse, etc. The compounds according to the present invention therefore have application in both human and veterinary medicine.
  • the invention provides a pharmaceutical composition
  • a pharmaceutical composition comprising a compound according to the present invention, or a salt, metabolite, or prodrug thereof, in combination with a pharmaceutically acceptable carrier, diluent or excipient thereof.
  • the pharmaceutical composition may further comprise one or more other therapeutic agents.
  • a therapeutic agent other than a compound of the invention, may be administered concurrently with a compound of the invention.
  • a compound of the invention may be administered in combination with a co-agent used in conventional chemotherapy directed against solid tumors.
  • the different therapeutic agents may be administered sequentially, separately or simultaneously.
  • R 1 to R 5 and R 13 are as defined, optionally wherein any one or more of the groups R 1 to R 5 are protected, to form a compound of the formula (III), after removal of any protecting groups, wherein R 12 is O, and R 1 to R 11 and R 13 are as defined, and, optionally, converting the compound into a pharmaceutically acceptable salt.
  • the protection and de-protection of functional groups are routine procedures to the person skilled in the art.
  • R 14 and R 15 are protective groups, with dry 10% Pd/carbon, where "dry” means substantially no water or less than about 5% water, in an organic solvent, optionally in the presence of triethylamine, to form the compound of the formula (X), and, optionally, converting the resultant compound into a pharmaceutically acceptable salt.
  • the invention further provides intermediate compounds of formula (V), (VI) and (VIII) below:
  • R 6 to R 11 are as defined in the detailed description; wherein R 1 to R 5 and R 13 are as defined in the detailed description,
  • R 14 , R 15 , w, y and z are as defined in the detailed description, and the dashed line represents an optional bond.
  • R 14 and R 15 are protective groups, and w, y and z are independently selected from: C, 0, N and S, and the dashed line represents an optional bond, comprising reacting a compound of the formula (VIII) below
  • a therapeutically effective amount of the compound of the formula (I), (II), (III) or (IV) in any stereochemical form, or a mixture of any stereochemical forms in any ratios, or a pharmaceutically acceptable salt, metabolite, or prodrug thereof, is present or is used in the above aspects of the invention.
  • compositions suitable for administration may be incorporated into pharmaceutical compositions suitable for administration.
  • Such compositions typicaWy comprise at least one compound of the invention and at least one pharmaceutically acceptable carrier.
  • pharmaceutically acceptable carrier is intended to include any and all solvents, dispersion media, coatings, antibacterial and antifungal agents, isotonic and absorption delaying agents, and the like, compatible with pharmaceutical administration.
  • the use of such media and agents for pharmaceutically active substances is well known in the art. Except insofar as any conventional media or agent is incompatible with the active compound, use thereof in the compositions is contemplated. Supplementary active compounds can also be incorporated into the compositions.
  • a pharmaceutical composition of the invention is formulated to be compatible with its intended route of administration.
  • routes of administration include parenteral, e.g., intravenous, intradermal, subcutaneous, oral (e.g., inhalation), transdermal (topical), transmucosal, and rectal administration.
  • Solutions or suspensions used for parenteral, intradermal, or subcutaneous application can include the following components: a sterile diluent such as water for injection, saline solution, fixed oils, polyethylene glycols, glycerine, propylene glycol or other synthetic solvents; antibacterial agents such as benzyl alcohol or methyl parabens; antioxidants such as ascorbic acid or sodium bisulfite; chelating agents such as ethylenediaminetetraacetic acid; buffers such as acetates, citrates or phosphates and agents for the adjustment of tonicity such as sodium chloride or dextrose. pH can be adjusted with acids or bases, such as hydrochloric acid or sodium hydroxide.
  • the parenteral preparation can be enclosed in ampoules, disposable syringes or multiple dose vials made of glass or plastic.
  • compositions suitable for injectable use include sterile aqueous solutions (where water soluble) or dispersions and sterile powders for the extemporaneous preparation of sterile injectable solutions or dispersion.
  • suitable carriers include physiological saline, bacteriostatic water, Cremophor ELTM (BASF, Parsippany, NJ) or phosphate buffered saline (PBS).
  • the composition must be sterile and should be fluid to the extent that syringability exists. It must be stable under the conditions of manufacture, transfer and storage.
  • the carrier can be a solvent or dispersion medium containing, for example, water, ethanol, polyol (for example, glycerol, propylene glycol, and liquid polyetheylene glycol, and the like), and suitable mixtures thereof.
  • the proper fluidity can be maintained, for example, by the use of a coating such as lecithin, by the maintenance of the required particle size in the case of dispersion and by the use of surfactants.
  • isotonic agents for example, sugars, polyalcohols such as manitol, sorbitol, sodium chloride in the composition.
  • Prolonged absorption of the injectable compositions can be brought about by including in the composition an agent which delays absorption, for example, aluminum mono stearate and gelatin.
  • Sterile injectable solutions can be prepared by incorporating the active compound (e.g., a Nox2 inhibitor according to an embodiment of the invention) in the required amount in an appropriate solvent with one or a combination of ingredients enumerated above, as required, followed by filtered sterilization.
  • the active compound e.g., a Nox2 inhibitor according to an embodiment of the invention
  • dispersions are prepared by incorporating the active compound into a sterile vehicle which contains a basic dispersion medium and the required other ingredients from those enumerated above.
  • the preferred methods of preparation are vacuum drying and freeze-drying which yields a powder of the active ingredient plus any additional desired ingredient from a previously sterile-filtered solution thereof.
  • Oral compositions generally include an inert diluent or an edible carrier. They can be enclosed in gelatin capsules or compressed into tablets. For the purpose of oral therapeutic administration, the active compound can be incorporated with excipients and used in the form of tablets, troches, or capsules. Oral compositions can also be prepared using a fluid carrier for use as a mouthwash, wherein the compound in the fluid carrier is applied orally and swished and expectorated or swallowed. Pharmaceutically compatible binding agents, and/or adjuvant materials can be included as part of the composition.
  • the tablets, pills, capsules, troches and the like can contain any of the following ingredients, or compounds of a similar nature: a binder such as microcrystaiiine cellulose, gum tragacanth or gelatin; an excipient such as starch or lactose, a disintegrating agent such as alginic acid, Primogel, or corn starch; a lubricant such as magnesium stearate or Sterotes; a glidant such as colloidal silicon dioxide; a sweetening agent such as sucrose or saccharin; or a flavoring agent such as peppermint, methyl salicylate, or orange flavoring.
  • a binder such as microcrystaiiine cellulose, gum tragacanth or gelatin
  • an excipient such as starch or lactose, a disintegrating agent such as alginic acid, Primogel, or corn starch
  • a lubricant such as magnesium stearate or Sterotes
  • a glidant such as coll
  • the compounds can be delivered in the form of an aerosol spray of liquid, or powdered or formulated inhibitor (e.g. within liposomes as stated below) from pressured container or dispenser which contains a suitable propellant, e.g., a gas such as carbon dioxide, or a nebulizer.
  • a suitable propellant e.g., a gas such as carbon dioxide, or a nebulizer.
  • Systemic administration can also be by transmucosal or transdermal means.
  • penetrants appropriate to the barrier to be permeated are used in the formulation.
  • penetrants are generally known in the art, and include, for example, for transmucosal administration, detergents, bile salts, and fusidic acid derivatives.
  • Transmucosal administration can be accomplished through the use of nasal sprays or suppositories.
  • the active compounds can be formulated into ointments, salves, gels, or creams as generally known in the art.
  • the compounds can also be prepared in the form of suppositories (e.g., with conventional suppository bases such as cocoa butter and other glycerides) or retention enemas for rectal delivery.
  • the active compounds are prepared with carriers that will protect the compound against rapid elimination from the body, such as a controlled release formulation, including implants and microencapsulated delivery systems.
  • a controlled release formulation including implants and microencapsulated delivery systems.
  • Biodegradable, biocompatible polymers can be used, such as ethylene vinyl acetate, polyanhydrides, polyglycolic acid, collagen, polyorthoesters, and polylactic acid. Methods for preparation of such formulations will be apparent to those skilled in the art.
  • the materials can also be obtained commercially from Alza Corporation and Nova Pharmaceuticals, Inc.
  • Liposomal suspensions (including liposomes targeted to infected cells with monoclonal antibodies to viral antigens) can also be used as pharmaceutically acceptable carriers. These can be prepared according to methods known to those skilled in the art.
  • Dosage unit form refers to physically discrete units suited as unitary dosages for the subject to be treated; each unit containing a predetermined quantity of active compound calculated to produce the desired therapeutic effect in association with the required pharmaceutical carrier.
  • the specification for the dosage unit forms of the invention are dictated by and directly dependent on the unique characteristics of the active compound and the particular therapeutic effect to be achieved, and the limitations inherent in the art of compounding such an active compound for the treatment of individuals.
  • Toxicity and therapeutic efficacy of such compounds can be determined by standard pharmaceutical procedures in cell cultures or experimental animals, e.g., for determining the LD 50 (the dose lethal to 50% of the population) and the ED 50 (the dose therapeutically effective in 50% of the population).
  • the dose ratio between toxic and therapeutic effects is the therapeutic index and it can be expressed as the ratio LD50/ED50.
  • Compounds which exhibit large therapeutic indices are preferred. While compounds that exhibit toxic side effects may be used, care should be taken to design a delivery system that targets such compounds to the site of affected tissue in order to minimize potential damage to uninfected cells and, thereby, reduce side effects.
  • the data obtained from the cell culture assays and animal studies can be used in formulating a range of dosage for use in humans.
  • the dosage of such compounds lies preferably within a range of circulating concentrations that include the ED 50 with little or no toxicity.
  • the dosage may vary within this range depending upon the dosage form employed and the route of administration utilized.
  • the therapeutically effective dose can be estimated initially from cell culture assays.
  • a dose may be formulated in animal models to achieve a circulating plasma concentration range that includes the IC 5 o (i.e., the concentration of the test compound which achieves a half-maximal inhibition of symptoms) as determined in cell culture.
  • IC 5 o i.e., the concentration of the test compound which achieves a half-maximal inhibition of symptoms
  • levels in p ⁇ asma may be measured, for example, by high performance liquid chromatography.
  • compositions can be included in a container,, pack, or dispenser together with instructions for administration.
  • the dose can vary within wide limits and, as is customary and is known to the physician, is to be suited to the individual conditions in each individual case. It depends, for example, on the nature and severity of the disease to be treated, on the mode of administration, or on whether an acute or chronic condition is treated or whether prophylaxis is carried out.
  • An appropriate dosage can be established using clinical approaches well known in the medical art.
  • the daily dosage for achieving the desired results in an adult weighing about 75 kg is from about 0.01 to about 100 mg/kg, preferably from about 0.1 to about 50 mg/kg, in particular from about 0.1 to about 10 mg/kg.
  • Schemes 1 and 2 outline a multi-step two-part convergent synthesis showing typical or preferred experimental conditions for the preparation of the compounds LMH001 and LMH026, respectively. It will be apparent that other experimental conditions (i.e., reaction temperatures, time, moles of reagent solvents, etc.) can also be used for the preparation of LMH0Q1 and LMH036 and that the experimental conditions and procedures can be suitably modified for the preparation of other compounds falling within the formula (I).
  • experimental conditions i.e., reaction temperatures, time, moles of reagent solvents, etc.
  • LMH001 is made from commercially available starting materials according to the steps outlined in Scheme 1.
  • the commercially available aldehyde of formula (2) was reduced with sodium borohydride under standard conditions to give the diol of formula (3).
  • the hydroxyl groups of the diol were then protected using the silyl ethers TBS to provide the bis-silyl ether of formula (4).
  • Attempted saponification of the ester using LiOH removed one phenolic TBS group to give the compound of formula (6).
  • the free hydroxyl group in the compound of formu)a (6) was re-protected as a MEM ether to give the orthogonally protected diol of formula (7).
  • Saponification of the compound of formula (7) produced the acid of formula (8), which was ready for coupling with the product of the other step for the full synthesis of the above identified compound.
  • T e second step was the conversion of an aldehyde (3) to an oxazole (4) using TosMIC under standard conditions (17). The reaction furnished a pure product in quantitative yield after trituration from water and thorough drying.
  • Besselievre et ai., (17) describes the coupling of oxazoles with aryl bromides using the relatively simple combination of Pd(Ph 3 P) 4 and ⁇ BuOLi in 1,4-dioxane at 120°C (sealed tube). Surprisingly, when these conditions were applied to our substrates the coupling proceeded to give (7) in good yield and high purity after chromatography.
  • the compounds according to the invention may be tested for their activity in the inhibition or reduction of formation of ROS from oxygen in cells.
  • the activity of the compounds is tested in the following cell cultures by different techniques according to the protocols detailed below.
  • FCS fetal calf serum
  • BSA bovine serum albumin
  • DCF 2,7- dichlorodihydrofluorescein
  • EDTA reactive oxygen species
  • SOD superoxide dismutase
  • PMA phorbol 12-myristate 13-acetate
  • 0 2 ⁇ superoxide
  • U unit
  • C0 2 carbon dioxide
  • MLU mean light unit
  • MTT thiazolyl blue tetrazolium bromide
  • SD standard deviation
  • EDTA ethylenediaminetetra acetic acid
  • HBSS Horted salt solution
  • H 2 DCF-DA (2',7'-dichlodihydrofluorescein diacetate
  • NADPH nicotinamide adenine dinucleotide diphosphate
  • PBS phosphate buffered saline
  • DMEM Dulbecco's Modified Eagle Medium
  • mice lymph node microvascular endothelial cell line (SVEC4-10) was from the American Type Culture Collection (C L-2167) and grown in DMEM, containing 10% (v/v) heat inactivated foetal calf serum, 100 U/mL penicillin and 100 mg/mL streptomycin, in a humidified atmosphere at 37°C with 5% C0 2 .
  • the NIH-3T3 fibroblast is a mouse embryonic fibroblast cell line. Cells were grown in DMEM containing, 10% (v/v) heat inactivated foetal calf serum, 100 U/mL penicillin and 100 mg/mL streptomycin, in a humidified atmosphere at 37°C with 5% COi.
  • HL-60 is a human promyelocyte leukaemia cell line.
  • the HL60 cells were grown in RPMI 1640 medium; containing 10% (v/v) heat inactivated foetal calf serum, 100 U/mL penicillin and 100 mg/mL streptomycin, in a humidified atmosphere at 3 °C with 5% C0 2 .
  • HL60 cells were differentiated to the human neutrophils by culturing the cells in the culture medium in the presence of 1.25% v/v DMSO for 6 days before being used for the experiments. 1.5 IMR90 cells
  • IMR90 is a human foetal lung fibroblast cell line.
  • the IMR90 cells were grown in DMEM, containing 10% (v/v) heat inactivated foetal calf serum, 100 U/mL periicM ' in and 100 mg/mL streptomycin, in a humidified atmosphere at 37°C with 5% C0 2 .
  • HepG2 is a human hepatocytic cell line (ATCC No. HB-8065) that was originally derived from liver tissue with a wed differentiated hepatocellular carcinoma. HepG2 cells have been proven to be a suitable in vitro model system for the study of human hepatocytes, and the study of liver metabolism and toxicity. HepG2 cells were grown in DMEM, containing 10% (v/v) heat inactivated foetal calf serum, 100 U/mL penicillin and 100 mg/mL streptomycin, in a humidified atmosphere at 37° C with 5% C0 2 .
  • A549 is a human lung adenocarcinoma epithelial cell line.
  • A549 cells were grown in DMEM, containing 10% (v/v) heat inactivated foetal calf serum, 100 U/mL penicillin and 100 mg/mL streptomycin, in a humidified atmosphere at 37°C with 5% C0 2 .
  • the light emission was recorded over a 60 minute period and expressed as arbitrary MLU measured by the illuminometer. Each experiment was performed in triplicate and the mean of 3 blank readings was subtracted from each corrected value for each reading. In some experiments cells were also stimulated by the addition of PMA (O.lug/mL), TNFa (lOOU/ml) or angiotensin II (200nM) before the measurement of chemiluminescence. For the measurement of NADPH (Nox2 enzyme substrate)-dependent production by endothelial cells in suspension, NADPH (100 ⁇ final) was added just before the addition of lucigenin.
  • NADPH Nox2 enzyme substrate
  • CY production was also studied using total cell homogenate (for the endothelial cells and the fibroblasts).
  • Cultured endothelial cells or fibroblasts were washed twice with ice cold PBS, detached and resuspended (1 x 10 7 /ml) in modified HEPES buffer (described above). Cells were broken by homogenization, followed by sonication for 2 x 15 seconds and the unbroken cells were spun down by centrifugation at 200 g for 5 min. Soluble protein concentration was determined using a kit from Bio- ad Laboratories Ltd. (Hertfordshire, U.K.). The protocol for measurement of 0 2 production by cell homogenates (100 g protein / well) using (ucigentn-luminescence was exactly as described above.
  • LMHOOl final concentration 0-100 ⁇
  • LMHOOl was added into the well and pre-incubated with the cells or cell homogenates at room temperature for 5 minutes before the addition of NADPH.
  • LMHOOl was added directly into the culture medium for 1 hour prior to either TNFa (lOOU/ml), angiotensin II (200nM) or EGF (10ng/m() stimulation for 24 hours, followed by ROS detection as described above.
  • LMHOOl The potential cytotoxicity of LMHOOl on cultured endothelial cells (SVEC4-10) and liver cells (HepG2) was assessed using the MTT assay as described previously (16). Briefly, intact cells were resuspended in culture medium containing 2.5% (v/v) FCS, p)ated in 96-well-flat bottom culture plates (5x10" cells/well) with LMHOOl (final concentration 0-10 ⁇ ) and incubated at 37"C in a humidified C0 2 incubator. Twenty-four hours after the addition of LMHOOl, MTT, a yellow tetrazolium reagent which is converted to formazan by living cells, was added directly into each well and incubated for a further 2 hours at 37°C.
  • BMSC T e ex vivo proliferative capabilities of isolated BMSC or cultured cells were analyzed using the MTS proliferation assay.
  • BMSC were suspended in Dulbecco's modified Eagle's medium supplemented with 5% fetal bovine serum (Sigma), 100 U/mL penicillin and 100 pg/mL streptomycin, and plated in 1% gelatin coated 96-well plates at a density of 1 x 10 5 cells/well in triplicate. After 24 hours in culture medium containing LMH001 (0-10 ⁇ ), proliferation was assessed using the MTS (CellTiter 96 AQ; Promega, Madison, USA) assay according to the manufacturer's protocol. The absorbance at 490 nm was read using an ELISA plate reader (Perkin elmer), and the proliferation index calculated relative to the controls. The mean of 3 blank readings was subtracted from each corrected value.
  • Results were calculated as the mean ⁇ SD from triplicate measurements over 3 different cell culture experiments. The difference in the 0 2 ' production by cells with or without inhibitors was analysed using Bonferonni f-test. IC 50 was calculated using Prism 5 (GraphPad software LTD).

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US10183015B2 (en) 2015-03-04 2019-01-22 Medivation Technologies Llc Heterocyclic compounds and methods of use
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