US20080139636A1 - Adamantane derivatives - Google Patents
Adamantane derivatives Download PDFInfo
- Publication number
- US20080139636A1 US20080139636A1 US11/812,673 US81267307A US2008139636A1 US 20080139636 A1 US20080139636 A1 US 20080139636A1 US 81267307 A US81267307 A US 81267307A US 2008139636 A1 US2008139636 A1 US 2008139636A1
- Authority
- US
- United States
- Prior art keywords
- ylmethyl
- chloro
- dec
- tricyclo
- benzamide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2603/00—Systems containing at least three condensed rings
- C07C2603/56—Ring systems containing bridged rings
- C07C2603/58—Ring systems containing bridged rings containing three rings
- C07C2603/70—Ring systems containing bridged rings containing three rings containing only six-membered rings
- C07C2603/74—Adamantanes
Definitions
- the present invention relates to adamantane derivatives, a process for their preparation, pharmaceutical compositions containing them, a process for preparing the pharmaceutical compositions, and their use in therapy.
- the P2X 7 receptor (previously known as P2Z receptor), which is a ligand-gated ion channel, is present on a variety of cell types, largely those known to be involved in the inflammatory/immune process, specifically, macrophages, mast cells and lymphocytes (T and B).
- IL-1 ⁇ interleukin-1 ⁇
- giant cell formation macrophages/microglial cells
- degranulation mass cells
- L-selectin shedding lymphocytes
- P2X 7 receptors are also located on antigen-presenting cells (APC), keratinocytes, salivary acinar cells (parotid cells), hepatocytes, erythrocytes, erythroleukaemic cells, monocytes, fibroblasts, bone marrow cells, neurones and renal mesangial cells.
- APC antigen-presenting cells
- keratinocytes keratinocytes
- salivary acinar cells parotid cells
- hepatocytes erythrocytes
- erythroleukaemic cells monocytes
- monocytes fibroblasts
- bone marrow cells fibroblasts
- neurones neurones and renal mesangial cells.
- P2X 7 receptor antagonists for use in the treatment of inflammatory, immune or cardiovascular diseases, in the aetiologies of which the P2X 7 receptor may play a role.
- D represents CH 2 or CH 2 CH 2 , preferably CH 2 ;
- E represents C(O)NH or, preferably, NHC(O);
- R 1 and R 2 each independently represent hydrogen, halogen (e.g. fluorine, chlorine, bromine or iodine), amino (NH 2 ), nitro (NO 2 ), C 1 -C 6 alkyl or trifluoromethyl, but R 1 and R 2 may not both simultaneously represent hydrogen;
- R 3 represents a group of formula
- R 4 represents a C 1 -C 6 allyl group
- X represents an oxygen or sulphur atom or a group NR 13 , SO or SO 2
- R 5 represents hydrogen, or R 5 represents C 1 -C 6 alkyl or C 2 -C 6 alkenyl, each of which may be optionally substituted by at least one substituent selected from halogen, hydroxyl, (di)-C 1 -C 6 -alkylamino, —Y—R 6 ,
- a 5- or 6-membered heteroaromatic ring comprising from 1 to 4 heteroatoms independently selected from nitrogen, oxygen and sulphur which heteroaromatic ring may itself be optionally substituted by at least one substituent selected from halogen, hydroxyl and C 1 -C 6 alkyl;
- Y represents an oxygen or sulphur atom or a group NH, SO or SO 2 ;
- R 6 represents a group —R 7 Z where R 7 represents a C 2 -C 6 alkyl group and Z represents an —OH, —CO 2 H, —NR 8 R 9 , —C(O)NR 10 R 11 or —N(R 12 ) C(O)—C 1 -C 6 alkyl group, and, in the case where Y represents an oxygen or sulphur atom or a group NH, R 6 additionally represents hydrogen, C 1 -C 6 alkyl, C 1 -C 6 alkylcarbonyl, C 1 -C 6 alkoxycarbonyl,
- R 13 represents hydrogen, C 3 -C 8 cycloalkyl, C 3 -C 8 cycloalkylmethyl, or R 13 represents a C 1 -C 6 alkyl group optionally substituted by at least one substituent selected from hydroxyl and C 1 -C 6 alkoxy;
- R 14 , R 15 , R 16 , R 17 and R 18 each independently represent a C 1 -C 6 alkyl group; with the proviso that when E is C(O)NH, X is O, NH or N(C 1 -C 6 alkyl), en R 5 is other than a hydrogen atom or an unsubstituted C 1 -C 6 alkyl group; or a pharmaceutically acceptable salt or solvate thereof.
- an alkyl substituent or alkyl moiety in a substituent group may be linear or branched.
- an alkyl group or moiety may contain up to 6 carbon atoms, examples of which include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, t-butyl, n-pentyl and n-hexyl.
- a C 2 -C 6 alkenyl group may be linear or branched.
- the alkyl moieties may be the same or different.
- E when E represents C(O)NH, then X is S, SO or SO 2 .
- R 1 and R 2 each independently represent a hydrogen or halogen atom, or an amino, nitro, C 1 -C 4 alkyl or trifluoromethyl group (but R 1 and R 2 may not both simultaneously represent a hydrogen atom).
- R 1 and R 2 each independently represent a hydrogen, chlorine or bromine atom, or an amino, nitro, C 1 -C 3 alkyl or trifluoromethyl group (but R 1 and R 2 may not both simultaneously represent a hydrogen atom).
- R 1 and R 2 each independently represent a hydrogen or chlorine atom (but R 1 and R 2 may not both simultaneously represent a hydrogen atom).
- R 4 represents a C 1 -C 6 alkyl group, for example a linear C 1 -C 6 alkyl group such as CH 2 , (CH 2 ) 2 , (CH 2 ) 3 or (CH 2 ) 4 .
- X represents an oxygen atom or, especially, a group NR 13 .
- R 5 represents hydrogen, or R 5 represents C 1 -C 6 alkyl or C 2 -C 6 alkenyl (e.g. ethenyl or —CH 2 CH ⁇ CH 2 ), each of which may be optionally substituted by at least one substituent, e.g. one, two or three substituents independently selected from halogen (e.g. fluorine, chlorine, bromine or iodine), hydroxyl, (di)-C 1 -C 6 -alkylamino (e.g. methylamino, ethylamino, dimethylamino or diethylamino), —Y—R 6 ,
- a 5- or 6-membered heteroaromatic ring comprising 1, 2, 3 or 4 heteroatoms independently selected from nitrogen, oxygen and sulphur which heteroaromatic ring may itself be optionally substituted by at least one substituent, e.g. one or two substituents independently selected from halogen (e.g. fluorine, chlorine, bromine or iodine), hydroxyl and C 1 -C 6 , preferably C 1 -C 4 , alkyl, e.g., imidazolyl (such as imidazol-1-yl or imidazol-4-yl), 1-methylimidazolyl (such as 1-methylimidazol yl), 2,3,5-triazolyl and 2,3,4,5-tetrazolyl.
- substituent e.g. one or two substituents independently selected from halogen (e.g. fluorine, chlorine, bromine or iodine), hydroxyl and C 1 -C 6 , preferably C 1 -C 4 ,
- Preferred compounds are those in which R 5 represents an optionally substituted C 1 -C 6 alkyl group.
- a preferred optional substituent is —Y—R 6 .
- R 6 represents a group —R 7 Z where R 7 represents a C 2 -C 6 alkyl group and Z represents an —OH, —CO 2 H, —NR 8 R 9 , —C(O)NR 10 R 11 or —N(R 12 )C(O)—C 1 -C 6 alkyl group.
- R 6 may represent a group —R 7 Z as defined above (particularly —(CH 2 ) 2 OH or —(CH 2 ) 3 OH), or R 6 may represent hydrogen, C 1 -C 6 alkyl (e.g. methyl, ethyl, n-propyl, isopropyl or t-butyl), C 1 -C 6 alkylcarbonyl (e.g. methylcarbonyl, ethylcarbonyl, n-propylcarbonyl or t-butylcarbonyl), C 1 -C 6 alkoxycarbonyl (e.g.
- Y is preferably an oxygen or sulphur atom or a group NH.
- Y represents an oxygen or sulphur atom or a group NH and R 6 represents —(CH 2 ) 2 OH, —(CH 2 ) 3 OH, hydrogen, methyl, isopropyl, methylcarbonyl or t-butylcarbonyl.
- Y represents oxygen and R 6 represents hydrogen.
- R 8 , R 9 , R 10 , R 11 and R 12 each independently represent a hydrogen atom or a C 1 -C 4 alkyl group.
- R 13 represents hydrogen, C 3 -C 8 , preferably C 3 -C 6 , cycloalkyl, C 3 -C 8 , preferably C 3 -C 6 , cycloalkylmethyl, or R 13 represents a C 1 -C 6 alkyl group optionally substituted by at least one substituent, e.g. one, two or three substituents independently selected from hydroxyl and C 1 -C 6 alkoxy.
- R 13 examples include hydrogen, —(CH 2 ) 2 OH, methyl, ethyl, n-propyl, isopropyl, n-butyl; n-pentyl, n-hexyl, cyclopropyl, cyclopentyl, cyclohexyl and cyclohexylmethyl.
- R 14 , R 15 , R 16 , R 17 and R 18 each independently represent a C 1 -C 6 , or C 1 -C 4 , alkyl group.
- Preferred compounds of the invention include:
- the present invention further provides a process for the preparation of a compound of formula (I) as defined above which comprises:
- L 1 represents a leaving group (e.g. a halogen atom or trifluoromethanesulphonate group) and D, E, R 1 , R 2 and R 4 are as defined in formula (I), with a compound of general formula
- X′ represents an oxygen or sulphur atom or a group NR 13
- R 5 is as defined in formula (I), optionally in the presence of a suitable silver salt (e.g. silver trifluoromethanesulphonate); or (b) when X represents SO or SO 2 , reacting a corresponding compound of formula (I) in which X represents a sulphur atom with a suitable oxidising agent; or (c) when X represents a group NR 13 reacting a compound of general formula
- R 20 represents a bond or C 1 -C 5 alkyl group and D, E, R 1 and R 2 are as defined in formula (I), with a compound of general formula
- R 5 and R 13 are as defined in formula (I), in the presence of a reducing agent (e.g. sodium triacetoxyborohydride);
- a reducing agent e.g. sodium triacetoxyborohydride
- the processes of the invention may conveniently be carried out in a solvent, e.g. an organic solvent such as dichloromethane, 1,2-dichloroethane or tetrahydrofuran, at a temperature, e.g. in the range from 0 to 200° C., preferably in the range from 0 to 150° C.
- a solvent e.g. an organic solvent such as dichloromethane, 1,2-dichloroethane or tetrahydrofuran
- a temperature e.g. in the range from 0 to 200° C., preferably in the range from 0 to 150° C.
- the oxidising agent used in (b) above may, for example, be 3-chloroperoxybenzoic acid or potassium peroxymonosulphate, commercially sold under the trade mark “O XONE ”.
- Hal represents a halogen atom such as bromine and D, E, R 1 and R 2 are as defined in formula (I), with a base such as t-butyllithium and then with a formylating agent such as dimethylformamide.
- R 25 represents NH 2 or CO 2 H and D is as defined in formula (I), with a compound of general formula (I), with a compound of general formula
- R 30 represents CO 2 H or NH 2
- R 1 , R 2 and Hal are as defined in formula (VII) above.
- n 0, 1, 2 or 3 and R and R′ independently represent C 1 -C 6 alkyl groups, followed by hydrogenation.
- compounds of formula (V) in which R 20 represents a C 2 -C 5 alkyl group may be prepared by reacting a compound of formula (VII) with an alkenol (e.g. 2-propen-1-ol allyl alcohol), but-3-enol, pent-4-enol or hex-5-enol) in the presence of a palladium catalyst, optionally followed by a hydrogenation reaction and an oxidation reaction using, for example, Dess-Martin periodinane reagent (these last two steps are not required when the alkenol is allyl alcohol).
- an alkenol e.g. 2-propen-1-ol allyl alcohol
- but-3-enol e.g. 2-propen-1-ol allyl alcohol
- compounds of formula (V) in which R 20 represents a C 2 -C 5 alkyl group may be prepared by reacting a compound of formula (VII) with an alkenoate ester (e.g. methyl acrylate or ethyl acrylate) in the presence of a palladium catalyst such as palladium acetate, followed by reduction of the ester group to a hydroxyl group and then oxidation to the aldehyde with an oxidising agent (e.g. Dess-Martin periodinane reagent).
- an alkenoate ester e.g. methyl acrylate or ethyl acrylate
- a palladium catalyst such as palladium acetate
- R 5 represents a C 2 -C 6 alkyl group substituted by a group —Y—R 6 where Y represents O, S or NH 1 and R 6 represents a group —R 7 Z as defined above
- R 5 represents a C 2 -C 6 alkyl group substituted by a hydroxyl group
- a hydroxyl activating agent such as methanesulphonyl chloride
- a base such as triethylamine
- R 1 , R 2 and R 3 are as defined in formula (I) and X represents O, S or NR 13 , by reaction with adamantylmethylamine or adamantylethylamine, in the presence of a coupling agent such as 1,1′-carbonyldiimidazole.
- R 1 , R 2 and R 3 are as defined in formula (I) and X represents O, S or NR 13 , by reaction with adamantylacetyl chloride or adamantylpropanoyl chloride in the presence of a base such as triethylamine.
- L 2 represents a leaving group (such as a halogen atom or trifluoromethanesulphonate group) and R 1 , R 2 and R 4 are as defined in formula (I), with a compound of formula (IV) as defined above, optionally in the presence of a silver salt such as silver trifluoromethanesulphonate.
- a leaving group such as a halogen atom or trifluoromethanesulphonate group
- L 3 represents a leaving group (such as a halogen atom or trifluorormethanesulphonate group) and R 1 , R 2 and R 4 are as defined in formula (I), with a compound of formula (IV) as defined above, optionally in the presence of a silver salt such as silver trifluoromethanesulphonate.
- a leaving group such as a halogen atom or trifluorormethanesulphonate group
- compounds of formula (I) may be converted into further compounds of formula (I).
- compounds of formula (I) in which —Y—R 6 represents —OH can be converted to compounds in which Y is O and R 6 is C 1 -C 6 alkoxycarbonyl, by reaction with an acylating agent.
- compounds of formula (I) in which X represents NR 13 and R 13 is other than hydrogen, for example, a cyclohexyl group can be prepared by reacting a compound of formula (I) in which X represents NH with cyclohexanone in the presence of a reducing agent such as sodium triacetoxyborohydride.
- the compounds of formula (I) above may be converted to a pharmaceutically acceptable salt or solvate thereof, preferably an acid addition salt such as a hydrochloride, hydrobromide, phosphate, acetate, fumarate, maleate, tartrate, citrate, oxalate, methanesulphonate p-toluenesulphonate, or an alkali metal salt such as a sodium or potassium salt.
- an acid addition salt such as a hydrochloride, hydrobromide, phosphate, acetate, fumarate, maleate, tartrate, citrate, oxalate, methanesulphonate p-toluenesulphonate, or an alkali metal salt such as a sodium or potassium salt.
- Certain compounds of formula (I) are capable of existing in stereoisomeric forms. It will be understood that the invention encompasses all geometric and optical isomers of the compounds of formula (I) and mixtures thereof including racemates. Tautomers and mixtures thereof also form an aspect of the present invention.
- the compounds of the present invention are advantageous in that they possess pharmacological activity and have utility as modulators of P2X 7 receptor activity. They are therefore indicated as pharmaceuticals for use in the treatment or prevention of rheumatoid arthritis, osteoarthritis, psoriasis, allergic dermatitis, asthma, hyperresponsiveness of the airway, chronic obstructive pulmonary disease (COPD), bronchitis, septic shock, glomerulonephritis, irritable bowel disease, Crohn's disease, ulcerative colitis, atherosclerosis, growth and metastases of malignant cells, myoblastic leukaemia, diabetes, neurodegenerative disease, Alzheimer's disease, meningitis, osteoporosis, burn injury, ischaemic heart disease, stroke, peripheral vascular disease and varicose veins.
- COPD chronic obstructive pulmonary disease
- the present invention provides a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, as hereinbefore defined for use in therapy.
- the invention provides the use of a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, as hereinbefore defined in the manufacture of a medicament for use in therapy.
- the term “therapy” also includes “prophylaxis” unless there are specific indications to the contrary.
- the terms “therapeutic” and “therapeutically” should be construed accordingly.
- Prophylaxis is expected to be particularly relevant to the treatment of persons who have suffered a previous episode of, or are otherwise considered to be at increased risk of, the disease or condition in question.
- Persons at risk of developing a particular disease or condition generally include those having a family history of the disease or condition, or those who have been identified by genetic testing or screening to be particularly susceptible to developing the disease or condition.
- the invention further provides a method of effecting immunosuppression (e.g. in the treatment of rheumatoid arthritis, irritable bowel disease, atherosclerosis, psoriasis, pulmonary disease, e.g. COPD or bronchitis, or diseases of the central nervous system, e.g. Alzheimer's disease or stroke) which comprises administering a therapeutically effective amount of a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, as hereinbefore defined to a patient.
- a method of effecting immunosuppression e.g. in the treatment of rheumatoid arthritis, irritable bowel disease, atherosclerosis, psoriasis, pulmonary disease, e.g. COPD or bronchitis, or diseases of the central nervous system, e.g. Alzheimer's disease or stroke
- the dosage administered will, of course, vary with the compound employed, the mode of administration, the treatment desired and the disease or condition indicated.
- the daily dosage of the compound of formula (I) will typically be in the range from 0.001 mg/kg to 30 mg/kg.
- the compounds of formula (I) and pharmaceutically acceptable salts and solvates thereof may be used on their own but will generally be administered in the form of a pharmaceutical composition in which the formula (I) compound/salt/solvate (active ingredient) is in association with a pharmaceutically acceptable adjuvant, diluent or carrier.
- the pharmaceutical composition will preferably comprise from 0.05 to 99% w (percent by weight), more preferably from 0.10 to 70% w, of active ingredient, and, from 1 to 99.95% w, more preferably from 30 to 99.90% w, of a pharmaceutically acceptable adjuvant, diluent or carrier, all percentages by weight being based on total composition.
- the present invention also provides a pharmaceutical composition
- a pharmaceutical composition comprising a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, as hereinbefore defined in association with a pharmaceutically acceptable adjuvant, diluent or carrier.
- the invention further provides a process for the preparation of a pharmaceutical composition of the invention which comprises mixing a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, as hereinbefore defined with a pharmaceutically acceptable adjuvant, diluent or carrier.
- the pharmaceutical composition of the invention may be administered topically (e.g. to the lung and/or airways or to the skin) in the form of solutions, suspensions, heptafluoroalkane aerosols and dry powder formulations; or systemically, e.g. by oral administration in the form of tablets, capsules, syrups, powders or granules, or by parenteral administration in the form of solutions or suspensions, or by subcutaneous administration or by rectal administration in the form of suppositories or transdermally.
- the reaction mixture was diluted with dichloromethane and washed with water, 10% aqueous potassium carbonate, 10% aqueous potassium hydrogen sulfate and saturated brine.
- the organic phase was then dried over sodium sulfate, filtered and concentrated under reduced pressure to afford the subtitled compound as a solid (7.84 g).
- Example 2 Prepared according to the method described in Example 2 from 2-chloro-5-formyl-N-(tricyclo[3.3.1.1 3,7 ]dec-1-ylmethyl)-benzamide (0.150 g, Example 1b), 3-amino-2,2-dimethylpropanol (0.093 g) and sodium triacetoxyborohydride (0.134 g) in 1,2-dichloroethane (6 ml). After work-up, the residue was purified by NPHPLC eluting with a gradient of 0-10% ethanol in dichloromethane to give the title compound as a white powder (0.035 g).
- Example 2 Prepared according to the method described in Example 2 from 2-chloro-5-formyl-N-(tricyclo[3.3.1.1 3,7 ]dec-1-ylmethyl)-benzamide (0.800 g, Example 1b), 2-(2-aminoethylthio)ethanol (0.584 g) and sodium triacetoxyborohydride (0.715 g) in 1,2-dichloroethane (15 ml). After work-up, the residue was purified by NPHLC eluting with a gradient of 0-10% ethanol in dichloromethane to give the title compound as a white powder (0.536 g).
- Ethanolamine (0.07 ml) was added to a suspension of 2-chloro-5-[3-[(methylsulfonyl)oxy]propyl]-N-(tricyclo[3.3.1.1 3,7 ]dec 1-ylmethyl)-benzamide (Example 6e, 0.170 g) in n-butanol (5 ml) and heated at 100° C. in a sealed tube for 12 h. On cooling to ambient temperature the solution was diluted with ethyl acetate and extracted twice with saturated aqueous sodium hydrogencarbonate solution and once with brine, dried over magnesium sulfate and concentrated under reduced pressure. Purification by preparative reverse phase HPLC (eluting with a gradient of acetonitrile in 0.1% aqueous ammonium acetate 25-95%) gave the title compound as the acetate salt (0.070 g).
- 3-Aminopropanol (1 ml) was added to a solution of 2-chloro-5-[3-[(methylsulfonyl)oxy]propyl]-N-(tricyclo[3.3.1.1 3,7 ]dec-1-ylmethyl)-benzamide (0.270 g, Example 6e) in tetrahydrofuran (30 ml) and the solution heated at reflux for 12 h. On cooling to ambient temperature the reaction mixture was diluted with water and extracted thrice with dichloromethane. The organic extracts were combined, dried over magnesium sulfate and concentrated under reduced pressure.
- Methylamine (2M tetrahydrofuran, 8 ml) was added to 2-chloro-5-[3-[(methylsulfonyl)oxy]propyl]-N-(tricyclo[3.3.1.1 3,7 ]dec-1-ylmethyl)-benzamide (0.250 g, Example 6e) and heated in a sealed tube at 70° C. for 18 h. On cooling to ambient temperature, the solution was diluted with ethyl acetate and extracted twice with saturated sodium hydrogencarbonate solution and once with brine, dried over magnesium sulfate and concentrated under reduced pressure. Purification by preparative reverse phase HPLC (eluting with a gradient of acetonitrile in 0.1% aqueous ammonium acetate/25-95%) gave the title compound as the acetate salt (0.140 g).
- the reaction mixture was diluted with dichloromethane and washed in sequence with water, 10% aqueous potassium carbonate solution, 10% aqueous potassium hydrogen sulfate and saturated brine.
- the organic phase was then dried over sodium sulfate, filtered and concentrated under reduced pressure to afford the subtitled compound as a solid (7.84 g).
- the solid was stirred in a mixture of ethyl acetate (400 ml) and 2M hydrochloric acid (300 ml) until the solid dissolved to afford two clear phases.
- the (upper) organic phase was separated off and washed with 2M sodium hydroxide solution (300 ml), then dried (Na 2 SO 4 ) and evaporated to a yellow solid.
- the solid was suspended in iso-hexane (100 ml), then filtered and washed with more iso-hexane (40 ml), and the resulting off-white solid dried in vacuo at 40° C. to afford the subtitled compound (14.0 g).
- the ether solution was washed with 2N aqueous hydrochloric acid solution followed by brine then dried over magnesium sulphate.
- the solution was concentrated to a volume of 150 ml then diluted with isohexane. After further partial concentration crystallization started. The mixture was allowed to stand in an ice-bath for 1 h. The resulting crystals were filtered, washed with isohexane and dried in vacuo to give the subtitled compound (17g).
- bbATP benzoylbenzoyl adenosine triphosphate
- each of the title compounds of the Examples was tested for antagonist activity at the P2X 7 receptor.
- the test was performed in 96-well flat bottomed microtitre plates, the wells being filled with 250 ⁇ l of test solution comprising 200 ⁇ l of a suspension of THP-1 cells (2.5 ⁇ 10 6 cells/ml) containing 10 ⁇ 4 M ethidium bromide, 25 ⁇ l of a high potassium buffer solution containing 10 ⁇ 5 M bbATP, and 25 ⁇ l of the high potassium buffer solution containing 3 ⁇ 10 ⁇ 5 M test compound.
- the plate was covered with a plastics sheet and incubated at 37° C. for one hour.
- the plate was then read in a Perkin-Elmer fluorescent plate reader, excitation 520 nm, emission 595 nm, slit widths: Ex 15 nm, Em 20 nm.
- bbATP a P2X 7 receptor agonist
- pyridoxal 5-phosphate a P2X 7 receptor antagonist
Abstract
The invention provides adamantane derivatives of formula (I), a process for their preparation, pharmaceutical compositions containing them, a process for preparing the pharmaceutical compositions, and their use in therapy. In formula (I) D represents CH2 or CH2CH2, E represents C(O)NH or NHC(O) and R3 represents a group of formula (I).
Description
- The present invention relates to adamantane derivatives, a process for their preparation, pharmaceutical compositions containing them, a process for preparing the pharmaceutical compositions, and their use in therapy.
- The P2X7 receptor (previously known as P2Z receptor), which is a ligand-gated ion channel, is present on a variety of cell types, largely those known to be involved in the inflammatory/immune process, specifically, macrophages, mast cells and lymphocytes (T and B). Activation of the P2X7 receptor by extracellular nucleotides, in particular adenosine triphosphate, leads to the release of interleukin-1β (IL-1β) and giant cell formation (macrophages/microglial cells), degranulation (mast cells) and L-selectin shedding (lymphocytes). P2X7 receptors are also located on antigen-presenting cells (APC), keratinocytes, salivary acinar cells (parotid cells), hepatocytes, erythrocytes, erythroleukaemic cells, monocytes, fibroblasts, bone marrow cells, neurones and renal mesangial cells.
- It would be desirable to make compounds effective as P2X7 receptor antagonists for use in the treatment of inflammatory, immune or cardiovascular diseases, in the aetiologies of which the P2X7 receptor may play a role.
- In accordance with the present invention, there is therefore provided a compound of general formula
- wherein D represents CH2 or CH2CH2, preferably CH2;
E represents C(O)NH or, preferably, NHC(O);
R1 and R2 each independently represent hydrogen, halogen (e.g. fluorine, chlorine, bromine or iodine), amino (NH2), nitro (NO2), C1-C6 alkyl or trifluoromethyl, but R1 and R2 may not both simultaneously represent hydrogen;
R3 represents a group of formula - R4 represents a C1-C6 allyl group;
X represents an oxygen or sulphur atom or a group NR13, SO or SO2;
R5 represents hydrogen, or R5 represents C1-C6 alkyl or C2-C6 alkenyl, each of which may be optionally substituted by at least one substituent selected from halogen, hydroxyl, (di)-C1-C6-alkylamino, —Y—R6, - a 5- or 6-membered heteroaromatic ring comprising from 1 to 4 heteroatoms independently selected from nitrogen, oxygen and sulphur which heteroaromatic ring may itself be optionally substituted by at least one substituent selected from halogen, hydroxyl and C1-C6 alkyl;
Y represents an oxygen or sulphur atom or a group NH, SO or SO2;
R6 represents a group —R7Z where R7 represents a C2-C6 alkyl group and Z represents an —OH, —CO2H, —NR8R9, —C(O)NR10R11 or —N(R12) C(O)—C1-C6 alkyl group, and, in the case where Y represents an oxygen or sulphur atom or a group NH, R6 additionally represents hydrogen, C1-C6 alkyl, C1-C6 alkylcarbonyl, C1-C6 alkoxycarbonyl, —C(O)NR14R15, —CH2—OC(O)R16, —CH2OC(O)OR17 or —C(O)OCH2OR18;
R8, R9, R10, R11 and R12 each independently represent a hydrogen atom or a C1-C6 alkyl group; - R13 represents hydrogen, C3-C8 cycloalkyl, C3-C8 cycloalkylmethyl, or R13 represents a C1-C6 alkyl group optionally substituted by at least one substituent selected from hydroxyl and C1-C6 alkoxy; and
- R14, R15, R16, R17 and R18 each independently represent a C1-C6 alkyl group;
with the proviso that when E is C(O)NH, X is O, NH or N(C1-C6 alkyl), en R5 is other than a hydrogen atom or an unsubstituted C1-C6 alkyl group;
or a pharmaceutically acceptable salt or solvate thereof. - In the context of the present specification, unless otherwise indicated, an alkyl substituent or alkyl moiety in a substituent group may be linear or branched. In the present invention, an alkyl group or moiety may contain up to 6 carbon atoms, examples of which include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, t-butyl, n-pentyl and n-hexyl. A C2-C6 alkenyl group may be linear or branched. In a di-C1-C6-alkylamino group, the alkyl moieties may be the same or different.
- In one embodiment of the invention, when E represents C(O)NH, then X is S, SO or SO2.
- In another embodiment of the invention, when E represents NHC(O), then X is O or NR13.
- Preferably, R1 and R2 each independently represent a hydrogen or halogen atom, or an amino, nitro, C1-C4 alkyl or trifluoromethyl group (but R1 and R2 may not both simultaneously represent a hydrogen atom).
- More preferably, R1 and R2 each independently represent a hydrogen, chlorine or bromine atom, or an amino, nitro, C1-C3 alkyl or trifluoromethyl group (but R1 and R2 may not both simultaneously represent a hydrogen atom).
- Most preferably, R1 and R2 each independently represent a hydrogen or chlorine atom (but R1 and R2 may not both simultaneously represent a hydrogen atom).
- R4 represents a C1-C6 alkyl group, for example a linear C1-C6 alkyl group such as CH2, (CH2)2, (CH2)3 or (CH2)4.
- Preferably X represents an oxygen atom or, especially, a group NR13.
- R5 represents hydrogen, or R5 represents C1-C6 alkyl or C2-C6 alkenyl (e.g. ethenyl or —CH2CH═CH2), each of which may be optionally substituted by at least one substituent, e.g. one, two or three substituents independently selected from halogen (e.g. fluorine, chlorine, bromine or iodine), hydroxyl, (di)-C1-C6-alkylamino (e.g. methylamino, ethylamino, dimethylamino or diethylamino), —Y—R6,
- a 5- or 6-membered heteroaromatic ring comprising 1, 2, 3 or 4 heteroatoms independently selected from nitrogen, oxygen and sulphur which heteroaromatic ring may itself be optionally substituted by at least one substituent, e.g. one or two substituents independently selected from halogen (e.g. fluorine, chlorine, bromine or iodine), hydroxyl and C1-C6, preferably C1-C4, alkyl, e.g., imidazolyl (such as imidazol-1-yl or imidazol-4-yl), 1-methylimidazolyl (such as 1-methylimidazol yl), 2,3,5-triazolyl and 2,3,4,5-tetrazolyl.
- Preferred compounds are those in which R5 represents an optionally substituted C1-C6 alkyl group. A preferred optional substituent is —Y—R6.
- When Y represents SO or SO2, R6 represents a group —R7Z where R7 represents a C2-C6 alkyl group and Z represents an —OH, —CO2H, —NR8R9, —C(O)NR10R11 or —N(R12)C(O)—C1-C6 alkyl group.
- When Y represents an oxygen or sulphur atom or a group NH, R6 may represent a group —R7Z as defined above (particularly —(CH2)2OH or —(CH2)3OH), or R6 may represent hydrogen, C1-C6 alkyl (e.g. methyl, ethyl, n-propyl, isopropyl or t-butyl), C1-C6 alkylcarbonyl (e.g. methylcarbonyl, ethylcarbonyl, n-propylcarbonyl or t-butylcarbonyl), C1-C6 alkoxycarbonyl (e.g. methoxycarbonyl ethoxycarbonyl, n-propoxycarbonyl or t-butoxycarbonyl), —C(O)NR14R15, —CH2OC(O)R16, —CH2OC(O)OR17 or —C(O)OCH2OR18.
- Y is preferably an oxygen or sulphur atom or a group NH.
- In one embodiment of the invention, Y represents an oxygen or sulphur atom or a group NH and R6 represents —(CH2)2OH, —(CH2)3OH, hydrogen, methyl, isopropyl, methylcarbonyl or t-butylcarbonyl. In an other embodiment, Y represents oxygen and R6 represents hydrogen.
- Preferably R8, R9, R10, R11 and R12 each independently represent a hydrogen atom or a C1-C4 alkyl group.
- R13 represents hydrogen, C3-C8, preferably C3-C6, cycloalkyl, C3-C8, preferably C3-C6, cycloalkylmethyl, or R13 represents a C1-C6 alkyl group optionally substituted by at least one substituent, e.g. one, two or three substituents independently selected from hydroxyl and C1-C6 alkoxy. Examples of preferred groups R13 include hydrogen, —(CH2)2OH, methyl, ethyl, n-propyl, isopropyl, n-butyl; n-pentyl, n-hexyl, cyclopropyl, cyclopentyl, cyclohexyl and cyclohexylmethyl.
- R14, R15, R16, R17 and R18 each independently represent a C1-C6, or C1-C4, alkyl group.
- Preferred compounds of the invention include:
- 2-Chloro-5-[[2-(2-hydroxy-ethylamino)-ethylamino]-methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[[2-(2-hydroxyethoxy)ethylamino]methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[(3-hydroxy-2,2-dimethylpropylamino)methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[(5-hydroxypentylamino)methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[[2-[(2-hydroxyethythio)ethylamino]methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[(2-hydroxyethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[(3-hydroxypropyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-(methylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[(1-methylethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 5-[3-[(2-Amino-2-methylpropyl)amino]propyl]-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[(4-hydroxybutyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[(2-hydroxy-2-methylpropyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[[2-methylbutyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, dihydrochloride salt,
- 2-Chloro-5-[3-[(2-hydroxypropyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, hydrochloride salt,
- (R)-2-Chloro-5-[3-[(2-hydroxypropyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, hydrochloride salt,
- (R)-2-Chloro-5-[3-[(2-hydroxy-1-methylethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, hydrochloride salt,
- 2-Chloro-5-[3-[[2-hydroxy-1-hydroxymethyl)-1-methylethyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 5-[3-[[2-(Acetylamino)ethyl]amino]propyl]-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, hydrochloride salt,
- 2-Chloro-5-[3-[[2-(diethylamino)ethyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, dihydrochloride salt,
- 2-Chloro-5-[3-[3-methoxypropyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, hydrochloride salt,
- 2-Chloro-5-[3-[(3-hydroxy-3-methylbutyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, hydrochloride salt,
- 2-Chloro-5-[3-[2-methoxyethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, hydrochloride salt,
- 2-Chloro-5-[[3-(methylamino)propoxy]methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)benzamide,
- 2-Chloro-5-[2-[(2-hydroxyethyl)amino]ethoxy]methyl)-N-(ticyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, acetic acid salt,
- 2-Chloro-5-[[2-[(3-hydroxypropyl)amino]ethoxy]methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, acetic acid salt,
- 2-Chloro-5-[[[3-[(1-methylethyl)amino]propyl]amino]methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 5-[[(3-Aminopropyl)amino]methyl]-2-chloro-N-(tricycloc[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[[[2-[(1-methylethyl)amino]ethyl]amino]methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)benzamide,
- 3-[[3-[4-Chloro-3-[[(tricyclo[3.3.1.13,7]dec-1-ylmethyl)amino]-carbonyl]phenyl]propyl]amino]propanoic acid, 2,2-dimethylpropyl ester, trifluoroacetic acid salt,
- 5-(2-Aminoethyl)-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)benzamide,
- 2-Chloro-5-[3-[(2-hydroxyethyl)pentylamino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-(methyl-2-propenylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[[2-(dimethylamino)ethyl]methylamino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 5-[3-(Butylethylamino)propyl]-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-(methylpentylamino)propyl]-N-(tricyclo[3.3.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[[2-(diethylamino)ethyl]ethylamino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[(2-hydroxyethyl)methylamino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-(dipropylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[(2-hydroxyethyl)(1-methyl ethylamino]propyl]-N (tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 5-[3-[Butyl(2-hydroxyethyl)amino]propyl]-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-(diethylamino)propyl]-N-(tricyclo([3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-(dimethylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 5-[3-(Butylmethylamino)propyl]-2-chloro-N-(tricyclo[3.3.1.13,7]dec 1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[(2-hydroxyethyl)propylamino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[ethyl(2-hydroxyethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-(dibutylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-(ethylpropylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[methyl(1-methylethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[[3-(dimethylamino)propyl]methylamino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[cyclohexyl(2-hydroxyethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-(cyclopropylamino)propyl]-N7(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-(cyclopropylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[[1-(hydroxymethyl)-2,2-dimethylpropyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-5-[3-(cyclopropylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[[2-(dimethylamino)ethyl]amino]propyl]-N-(tricyclo[3.3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[(3-hydroxy-2,2-dimethylpropyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[(3-dimethylethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[[3-(dimethylamino)propyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-(cyclopentylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-5-[3-[(1,2,2-trimethylpropyl)amino]propyl]-benzamide,
- 5-[3-(Butylamino)propyl]-2-chloro-N-(tricyclo[3.3.1.13,7-]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[[1-(hydroxymethyl)-2-methylpropyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[(1-methylpropyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[[2-(methylthio)ethyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[(2-hydroxy-1,1-dimethylethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[(cyclohexylmethyl)amino]propyl]N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-(2-propenylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[(2-fluoroethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[(2-methoxy-1-methylethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[3-(methylamino)propoxy]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)benzamide, dihydrochloride salt,
- 5-[[[(1-Aminocyclopropyl)methyl](2-hydroxyethyl)amino]methyl]-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 5-[[(2-Hydroxyethyl)[2-(methylamino)ethyl]amino]methyl]-2-methyl-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
- 2-Chloro-5-[3-[[2-(1-methyl-1H-imidazol-4-yl)ethyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)benzamide,
- 2-Chloro-5-[3-[[2-(1H-imidazol-4-yl)ethyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)benzamide,
- 2-Chloro-5-[3-[[3-(1H-imidazol-1-yl)propyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)benzamide,
and pharmaceutically acceptable salts and solvates thereof. - The present invention further provides a process for the preparation of a compound of formula (I) as defined above which comprises:
- (a) when X represents an oxygen or sulphur atom or a group NR13, reacting a compound of general formula
- wherein L1 represents a leaving group (e.g. a halogen atom or trifluoromethanesulphonate group) and D, E, R1, R2 and R4 are as defined in formula (I), with a compound of general formula
- wherein X′ represents an oxygen or sulphur atom or a group NR13, and R5 is as defined in formula (I), optionally in the presence of a suitable silver salt (e.g. silver trifluoromethanesulphonate); or
(b) when X represents SO or SO2, reacting a corresponding compound of formula (I) in which X represents a sulphur atom with a suitable oxidising agent; or
(c) when X represents a group NR13 reacting a compound of general formula - wherein R20 represents a bond or C1-C5 alkyl group and D, E, R1 and R2 are as defined in formula (I), with a compound of general formula
- wherein R5 and R13 are as defined in formula (I), in the presence of a reducing agent (e.g. sodium triacetoxyborohydride);
- and optionally after (a), (b) or (c) converting the compound of formula (I) obtained to a pharmaceutically acceptable salt or solvate thereof.
- The processes of the invention may conveniently be carried out in a solvent, e.g. an organic solvent such as dichloromethane, 1,2-dichloroethane or tetrahydrofuran, at a temperature, e.g. in the range from 0 to 200° C., preferably in the range from 0 to 150° C. The oxidising agent used in (b) above may, for example, be 3-chloroperoxybenzoic acid or potassium peroxymonosulphate, commercially sold under the trade mark “O
XONE ”. - Compounds of formula (V) in which R20 represents a bond may be prepared by reacting a compound of general formula
- wherein Hal represents a halogen atom such as bromine and D, E, R1 and R2 are as defined in formula (I), with a base such as t-butyllithium and then with a formylating agent such as dimethylformamide.
- Compounds of formula (VII) may conveniently be prepared by reacting a compound of general formula
- wherein R25 represents NH2 or CO2H and D is as defined in formula (I), with a compound of general formula
- wherein R30 represents CO2H or NH2, and R1, R2 and Hal are as defined in formula (VII) above.
- Compounds of formula (V) in which R20 represents a C1-C5 alkyl group may be prepared, for example, by reacting a corresponding compound of formula (V) in which R20 represents a bond with (methoxymethyl)diphenylphosphineoxide in the presence of a base, or, with a compound of general formula
- in which n is 0, 1, 2 or 3 and R and R′ independently represent C1-C6 alkyl groups, followed by hydrogenation.
- Alternatively, compounds of formula (V) in which R20 represents a C2-C5 alkyl group may be prepared by reacting a compound of formula (VII) with an alkenol (e.g. 2-propen-1-ol allyl alcohol), but-3-enol, pent-4-enol or hex-5-enol) in the presence of a palladium catalyst, optionally followed by a hydrogenation reaction and an oxidation reaction using, for example, Dess-Martin periodinane reagent (these last two steps are not required when the alkenol is allyl alcohol).
- As a further alternative, compounds of formula (V) in which R20 represents a C2-C5 alkyl group may be prepared by reacting a compound of formula (VII) with an alkenoate ester (e.g. methyl acrylate or ethyl acrylate) in the presence of a palladium catalyst such as palladium acetate, followed by reduction of the ester group to a hydroxyl group and then oxidation to the aldehyde with an oxidising agent (e.g. Dess-Martin periodinane reagent).
- Compounds of formula (I) in which R5 represents a C2-C6 alkyl group substituted by a group —Y—R6 where Y represents O, S or NH1 and R6 represents a group —R7Z as defined above, may be prepared by reacting a corresponding compound of formula (I) in which R5 represents a C2-C6 alkyl group substituted by a hydroxyl group with a hydroxyl activating agent (such as methanesulphonyl chloride) in the presence of a base (such as triethylamine), followed by reaction with a compound of formula HO—R7Z, HS—R7Z or H2N—R7Z.
- Compounds of formula (I) wherein E represents a group NHC(O) may be prepared from a compound of general formula
- wherein R1, R2 and R3 are as defined in formula (I) and X represents O, S or NR13, by reaction with adamantylmethylamine or adamantylethylamine, in the presence of a coupling agent such as 1,1′-carbonyldiimidazole.
- Compounds of formula (I) wherein E represents a group C(O)NH may be prepared from a compound of general formula
- wherein R1, R2 and R3 are as defined in formula (I) and X represents O, S or NR13, by reaction with adamantylacetyl chloride or adamantylpropanoyl chloride in the presence of a base such as triethylamine.
- Compounds of formula (XI) can be prepared from a compound of general formula
- wherein L2 represents a leaving group (such as a halogen atom or trifluoromethanesulphonate group) and R1, R2 and R4 are as defined in formula (I), with a compound of formula (IV) as defined above, optionally in the presence of a silver salt such as silver trifluoromethanesulphonate.
- Compounds of formula (XII) can be prepared from a compound of general formula.
- wherein L3 represents a leaving group (such as a halogen atom or trifluorormethanesulphonate group) and R1, R2 and R4 are as defined in formula (I), with a compound of formula (IV) as defined above, optionally in the presence of a silver salt such as silver trifluoromethanesulphonate.
- It will be appreciated that certain compounds of formula (I) may be converted into further compounds of formula (I). For example, compounds of formula (I) in which —Y—R6 represents —OH can be converted to compounds in which Y is O and R6 is C1-C6 alkoxycarbonyl, by reaction with an acylating agent. Furthermore, compounds of formula (I) in which X represents NR13 and R13 is other than hydrogen, for example, a cyclohexyl group can be prepared by reacting a compound of formula (I) in which X represents NH with cyclohexanone in the presence of a reducing agent such as sodium triacetoxyborohydride.
- Compounds of formula (III), (IV), (VI), (VIII), (IX), (X), (XIII) and (XIV) as well as compounds HO—R7Z, HS—R7Z and H2N—R7Z are either commercially available, are well known in the literature or may be prepared easily using known techniques.
- It will be appreciated by those skilled in the art that in the processes of the present invention certain functional groups such as hydroxyl, carboxyl, aldehyde, carbonyl or amino groups in the starting reagents or intermediate compounds may need to be protected by protecting groups. Thus, the preparation of the compounds of formula (I) may involve at a certain stage the removal of one or more protecting groups.
- The protection and deprotection of functional groups is described in ‘Protective Groups in Organic Chemistry’, edited by J. W. F. McOmie, Plenum Press (1973) and ‘Protective Groups in Organic Synthesis’, 2nd edition, T. W. Greene and P. G. M. Wuts, Wiley-Interscience (1991).
- The compounds of formula (I) above may be converted to a pharmaceutically acceptable salt or solvate thereof, preferably an acid addition salt such as a hydrochloride, hydrobromide, phosphate, acetate, fumarate, maleate, tartrate, citrate, oxalate, methanesulphonate p-toluenesulphonate, or an alkali metal salt such as a sodium or potassium salt.
- Certain compounds of formula (I) are capable of existing in stereoisomeric forms. It will be understood that the invention encompasses all geometric and optical isomers of the compounds of formula (I) and mixtures thereof including racemates. Tautomers and mixtures thereof also form an aspect of the present invention.
- The compounds of the present invention are advantageous in that they possess pharmacological activity and have utility as modulators of P2X7 receptor activity. They are therefore indicated as pharmaceuticals for use in the treatment or prevention of rheumatoid arthritis, osteoarthritis, psoriasis, allergic dermatitis, asthma, hyperresponsiveness of the airway, chronic obstructive pulmonary disease (COPD), bronchitis, septic shock, glomerulonephritis, irritable bowel disease, Crohn's disease, ulcerative colitis, atherosclerosis, growth and metastases of malignant cells, myoblastic leukaemia, diabetes, neurodegenerative disease, Alzheimer's disease, meningitis, osteoporosis, burn injury, ischaemic heart disease, stroke, peripheral vascular disease and varicose veins.
- Accordingly, the present invention provides a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, as hereinbefore defined for use in therapy.
- In another aspect, the invention provides the use of a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, as hereinbefore defined in the manufacture of a medicament for use in therapy.
- In the context of the present specification, the term “therapy” also includes “prophylaxis” unless there are specific indications to the contrary. The terms “therapeutic” and “therapeutically” should be construed accordingly.
- Prophylaxis is expected to be particularly relevant to the treatment of persons who have suffered a previous episode of, or are otherwise considered to be at increased risk of, the disease or condition in question. Persons at risk of developing a particular disease or condition generally include those having a family history of the disease or condition, or those who have been identified by genetic testing or screening to be particularly susceptible to developing the disease or condition.
- The invention further provides a method of effecting immunosuppression (e.g. in the treatment of rheumatoid arthritis, irritable bowel disease, atherosclerosis, psoriasis, pulmonary disease, e.g. COPD or bronchitis, or diseases of the central nervous system, e.g. Alzheimer's disease or stroke) which comprises administering a therapeutically effective amount of a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, as hereinbefore defined to a patient.
- For the above-mentioned therapeutic uses the dosage administered will, of course, vary with the compound employed, the mode of administration, the treatment desired and the disease or condition indicated. For effecting immunosuppression, the daily dosage of the compound of formula (I) will typically be in the range from 0.001 mg/kg to 30 mg/kg.
- The compounds of formula (I) and pharmaceutically acceptable salts and solvates thereof may be used on their own but will generally be administered in the form of a pharmaceutical composition in which the formula (I) compound/salt/solvate (active ingredient) is in association with a pharmaceutically acceptable adjuvant, diluent or carrier. Depending on the mode of administration, the pharmaceutical composition will preferably comprise from 0.05 to 99% w (percent by weight), more preferably from 0.10 to 70% w, of active ingredient, and, from 1 to 99.95% w, more preferably from 30 to 99.90% w, of a pharmaceutically acceptable adjuvant, diluent or carrier, all percentages by weight being based on total composition.
- Thus, the present invention also provides a pharmaceutical composition comprising a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, as hereinbefore defined in association with a pharmaceutically acceptable adjuvant, diluent or carrier.
- The invention further provides a process for the preparation of a pharmaceutical composition of the invention which comprises mixing a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, as hereinbefore defined with a pharmaceutically acceptable adjuvant, diluent or carrier.
- The pharmaceutical composition of the invention may be administered topically (e.g. to the lung and/or airways or to the skin) in the form of solutions, suspensions, heptafluoroalkane aerosols and dry powder formulations; or systemically, e.g. by oral administration in the form of tablets, capsules, syrups, powders or granules, or by parenteral administration in the form of solutions or suspensions, or by subcutaneous administration or by rectal administration in the form of suppositories or transdermally.
- The present invention will now be further explained by reference to the following illustrative examples.
-
- To a suspension of 5-bromo-2-chlorobenzoic acid (5.00 g) in dichloromethane (25 ml) at 0° C. was added oxalyl chloride (3.7 ml) and DMF (5 drops). The resulting mixture was stirred at room temperature under a nitrogen atmosphere for 1 h, then concentrated under reduced pressure to yield a solid. The solid was dissolved in dichloromethane (20 ml) and added dropwise to a solution of 1-adamantanemethylamine (3.36 g) and N,N-diisopropylethylamine (5.55 ml) in dichloromethane (20 ml). The resulting solution was allowed to stir at room temperature under a nitrogen atmosphere for 20 hs. The reaction mixture was diluted with dichloromethane and washed with water, 10% aqueous potassium carbonate, 10% aqueous potassium hydrogen sulfate and saturated brine. The organic phase was then dried over sodium sulfate, filtered and concentrated under reduced pressure to afford the subtitled compound as a solid (7.84 g).
- MS (APCI+ve) 382/384/386 (M+H)+
- 1H NMR (DMSO-d6) δ 8.42 (1H, t); 7.63 (1H, dd); 7.57 (1H, m); 7.45 (1H, d), 2.93 (2H, d); 1.94 (3H, s, br); 1.69-1.58 (6H, m); 1.51 (6H, s).
- A solution of 5-bromo-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (3.25 g, Example 1a) in tetrahydrofuran (150 ml) was cooled to −78° C. under a nitrogen atmosphere. A solution of 1.4M methyllithium in diethyl ether (6.1 ml) was added to this solution over 2 min. The mixture was stirred at −78° C. for 10 min., then a 1.7M solution of tert-butyllithium in pentane (10.0 ml) was added dropwise. The mixture was stirred at −78° C. for a further 10 min., then dimethylformamide (1.0 ml) was added. The resulting solution was stirred at −78° C. for 30 min., quenched with saturated aqueous ammonium chloride solution (100 ml) and extracted with ethyl acetate. The combined extracts were dried over sodium sulfate, filtered, and the filtrate concentrated under reduced pressure to give the subtitled compound as a solid (2.76 g).
- MS (APCI+ve) 332/334 (M+H).
- 1H NMR (DMSO-d6) δ 10.04 (1H, s); 8.49 (1H, t); 7.96-7.91 (2H, m); 7.74 (1H, d); 2.96 (2H, d), 1.95 (3H, s); 1.64 (6H, m); 1.53 (6H, d).
- A mixture of 2-chloro-5-formyl-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.244 g, Example 1b), 2-(2-aminoethylamino)-ethanol (0.154 g), p-toluenesulfonic acid (0.005 g) and toluene (30 ml) were refluxed together under Dean-Stark conditions for 3 hs, cooled and concentrated under reduced pressure to give an oil. This was dissolved in ethanol (30 ml) and cooled to 0° C. under a nitrogen atmosphere. Solid sodium borohydride (0.030 g) was added portionwise to this and the mixture stirred at room temperature for 30 min. The mixture was concentrated under reduced pressure and the residue purified by column chromatography over silica gel (eluting with 7:3:0.3 dichloromethane/methanol/35% aqueous ammonia) to give the free base. This was dissolved in methanol (10 ml) and treated with 4M hydrochloric acid in dioxane (4 ml) to give a solid precipitate. This was filtered off and washed with diethyl ether to afford the title compound as a solid (0.165 g).
- MS (APCI+−ve) 420/422 (M+H)+
- 1H NMR (DMSO-d6) δ 8.36 (1H, t); 7.61-7.57 (3H, m); 5.31 (1H s, br); 4.22 (2H, s, br); 3.68 (2H, s, br); 3.05 (2H, s, br); 2.95 (2H, d); 1.95 (3H, s, br); 1.69-1.59 (6H, m); 1.53 (6H, s, br).
-
- To a solution of 2-chloro-5-formyl-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.150 g, Example 1b) and 2-(2-aminoethoxy)ethanol (0.065 ml) in 1,2-dichloroethane (6 ml) was added sodium triacetoxyborohydride (0.134 g), and the mixture was stirred overnight at room temperature. Water (20 ml) and dichloromethane (20 ml) were added and the layers were partitioned. The organics were washed with brine (30 ml), dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure. The residue was purified by NPHPLC eluting with a gradient of 0-10% ethanol in dichloromethane to give the title compound as a white powder (0.016 g).
- MS (APCI+ve) 421/423 (M+H)+
- 1H NMR (DMSO-d6) δ 8.29 (1H, s, br); 7.42-7.34 (3H, m); 4.60 (1H, s, br); 3.71 (2H, s); 3.47 (4H, s); 3.40 (2H, d); 2.93 (2H, d); 2.63 (2H, d); 1.94 (3H, s); 1.64 (6H, q); 1.52 (6H, s).
-
- Prepared according to the method described in Example 2 from 2-chloro-5-formyl-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.150 g, Example 1b), 3-amino-2,2-dimethylpropanol (0.093 g) and sodium triacetoxyborohydride (0.134 g) in 1,2-dichloroethane (6 ml). After work-up, the residue was purified by NPHPLC eluting with a gradient of 0-10% ethanol in dichloromethane to give the title compound as a white powder (0.035 g).
- MS (APCI+ve) 419/421 (M+H)+
- 1H NMR (DMSO-d6) δ 8.29 (1H, t); 7.41-7.34 (3H, m); 4.60 (1H, s, br); 3.70 (2H, s); 3.16 (2H, s); 2.93 (2H, d); 2.29 (2H, s); 1.94 (3H, s, br); 1.63 (6H, q); 1.52 (6H, d); 0.80 (6H, s).
-
- A mixture of 2-chloro-5-formyl-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.100 g, Example 1b), 5-amino-1-pentanol (0.031 mg) and titanium(IV) isopropoxide (0.111 ml) was stirred under nitrogen for 1 h at room temperature. The viscous solution obtained was diluted with absolute ethanol (2 ml). Sodium cyanoborohydride (0.013 g) was added, and the solution was stirred for 20 h at room temperature. Water (5 ml) was added with stirring and the resulting precipitate was filtered and washed with ethanol. The filtrate was concentrated under reduced pressure. The crude product was dissolved in dichloromethane (20 ml) and filtered to remove the remaining inorganic residues. The filtrate was dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure. The residue was purified by NPBPLC eluting with a gradient of 0-10% ethanol in dichloromethane to give the title compound as a white powder (0.031 g).
- MS (APCI+ve) 419/421 (M)+
- 1H NMR (DMSO-d6) δ 8.28 (1H, t); 7.41-7.34 (3H, m); 5.30 (1H, s); 4.31 (1H, t); 3.67 (2H, s); 3.37-3.32 (2H, m); 2.93 (2H, d); 2.46-2.42 (2H, m); 1.94 (3H, s); 1.63 (6H, q); 1.52 (6H, s); 1.43-1.36 (2H, m); 1.32-1.28 (2H, m); 1.27-1.21 (2H, m).
-
- Prepared according to the method described in Example 2 from 2-chloro-5-formyl-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.800 g, Example 1b), 2-(2-aminoethylthio)ethanol (0.584 g) and sodium triacetoxyborohydride (0.715 g) in 1,2-dichloroethane (15 ml). After work-up, the residue was purified by NPHLC eluting with a gradient of 0-10% ethanol in dichloromethane to give the title compound as a white powder (0.536 g).
- MS (APCI+ve) 437/439 (M)+
- 1H NMR (DMSO-d6) δ 8.29 (1H, t); 7.42-7.35 (3H, m); 4.78 (1H, s, br); 3.71 (2H, s); 3.50 (2H, t); 2.93 (2H, d); 2.68-2.58 (4H, m); 2.56-2.52 (2H, m); 1.94 (3H, s, br); 1.63 (6H, q); 1.52 (6H, s).
-
- 5-Bromo-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)benzamide (5 g), methyl acrylate (1.4 ml), triethylamine (2.1 ml), palladium acetate (0.070 g) and tri-orthotolyl phosphine (0.185 g) were combined in N,N-dimethylformamide (20 ml). The mixture was heated in a sealed tube under nitrogen at 90° C. for 24 h. After cooling, the reaction mixture was partitioned between dichloromethane and dilute hydrochloric acid, the mixed phases were filtered through celite and the phases separated. The organic layer was washed with dilute hydrochloric acid and brine, dried over magnesium sulfate and concentrated under reduced pressure to give a residue which was triturated with diethyl ether and filtered to yield the subtitled compound as an off white solid (4.1 g).
- MS (APCI+ve) 388/390 (M+H)+
- 1H NMR (CDCl3) δ 7.84 (1H, d); 7.64 (1H, d); 7.49 (1H, dd); 7.43 (1H, d); 6.45 (1H, d); 6.24 (1H, t, br); 3.81 (3H, s); 3.19 (2H, d); 2.02 (3H, s); 1.70 (6H, q); 1.59 (6H, d).
- 5% Rhodium on carbon (0.40 g) was added to a solution of (2E)-3-[4-chloro-3-[[(tricyclo[3.3.1.13,7]dec-1-ylmethyl)amino]carbonyl]phenyl]-2-propenoic acid, methyl ester (Example 6a, 2.2 g) in ethyl acetate/dichloromethane (4:1) (160 ml) and the mixture hydrogenated at 3 bar for 24 h. The catalyst was removed by filtration and the filtrate concentrated to give the subtitled compound as an oil (2.3 g).
- MS (APCI+ve) 390/392 (M+H)+
- 1H NMR (CDCl3) δ 7.55 (1H, d); 7.31 (1H, d); 7.20 (1H, dd); 6.26 (1H, t, br); 3.68 (3H, s); 3.17 (2H, d); 2.95 (2H, t); 2.63 (2H, t); 2.02 (3H, s); 1.70 (6H, q); 1.59 (6H, d).
- A solution of sodium hydroxide (0.475 g) in water (30 ml) was added to a solution of 4-chloro-3-[[(tricyclo[3.3.1.13,7]dec-1-ylmethyl)amino]carbonyl]-benzenepropanoic acid, methyl ester (Example 6b, 2.3 g) in methanol (30 ml). After 5 h the reaction mixture was reduced to half volume in vacuo and acidified with dilute hydrochloric acid. A white solid precipitated and was collected by filtration and dried in vacuo at 50° C., to give the subtitled compound (1.2 g).
- MS (APCI+ve) 376/378 (M+H)+
- 1H NMR (DMSO-d6) δ 11.18 (1H, s); 8.28 (1H, t); 7.37 (1H, d); 7.28 (1H, dd); 7.26 (1H, d); 2.92 (2H, d); 2.82 (2H, t); 2.54 (2H, t); 1.94 (3H, s); 1.63 (6H, q); 1.52 (6H, s).
- Isobutylchloroformate (0.575 ml) and triethylamine (0.63 ml) were added to a solution of 4-chloro-3-[[(tricyclo[3.3.1.13,7]dec-1-ylmethyl)amino]carbonyl]-benzenepropanoic acid (Example 6c, 1.64 g) in tetrahydrofuran (30 ml) at 0° C. After 1 h the precipitates were removed by filtration and the filtrate added portionwise to a solution of sodium borohydride (0.18 g) in water (10 ml) at 0° C. After a father 1 h the reaction mixture was poured onto dilute hydrochloric acid and extracted with ethyl acetate. The organic phase was extracted twice with dilute hydrochloric acid, twice with saturated sodium hydrogencarbonate solution and once with brine, dried over magnesium sulfate and concentrated under reduced pressure to give a residue. Purification by silica gel chromatography (eluting with dichloromethane/methanol 96:4); yielded the subtitled compound as a solid (1.3 g).
- MS (APCI+ve) 362/364 (M+H)+
- 1H NMR (CDCl3) δ 7.55 (1H, d); 7.31 (1H, d); 7.19 (1H, dd); 6.28 (1H, s, br); 3.66 (2H, t); 3.17 (2H, d); 2.72 (2H, t); 1.92 (3H, s); 1.88 (2H, quin); 1.68 (6H, q); 1.59 (6H, s); 1.28 (1H, t).
- Methanesulfonyl chloride (1.1 ml) and triethylamine (2 ml) were added to a solution of 2-chloro-5-(3-hydroxypropyl)-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (Example 6d, 2.65 g) in dichloromethane at 0° C. After 1 h the reaction mixture was diluted with ethyl acetate and extracted once with water, twice with saturated sodium hydrogencarbonate solution and once with brine, dried over magnesium sulfate and concentrated under reduced pressure to give the subtitled compound as an oil which slowly solidified (3.2 g).
- MS (APCI+ve) 440/442 (M+H)+
- 1H NMR(CDCl3) δ 7.55 (1H, d); 7.34(1H, d); 7.20 (1H, dd); 6.32 (1H, t, br); 4.21 (2H, t); 3.18 (2H, d); 3.01 (3H, s); 2.77 (2H, t); 2.09 (2H, quin); 2.01 (3H, s); 1.69 (6H, q); 1.59 (6H, d).
- Ethanolamine (0.07 ml) was added to a suspension of 2-chloro-5-[3-[(methylsulfonyl)oxy]propyl]-N-(tricyclo[3.3.1.13,7]dec 1-ylmethyl)-benzamide (Example 6e, 0.170 g) in n-butanol (5 ml) and heated at 100° C. in a sealed tube for 12 h. On cooling to ambient temperature the solution was diluted with ethyl acetate and extracted twice with saturated aqueous sodium hydrogencarbonate solution and once with brine, dried over magnesium sulfate and concentrated under reduced pressure. Purification by preparative reverse phase HPLC (eluting with a gradient of acetonitrile in 0.1% aqueous ammonium acetate 25-95%) gave the title compound as the acetate salt (0.070 g).
- MS (APCI+ve) 405/407 (M+H)+
- 1H NMR (DMSO-d6) δ 8.28 (1H, t); 7.36 (1H, d); 7.25 (1H, dd); 7.20 (1H, d); 3.44 (2H, t); 2.92 (2H, d); 2.50-2.65 (6H, m); 1.94 (3H, s); 1.87 (3H, s); 1.74-1.61 (8H, m); 1.52 (6H, s).
-
- 3-Aminopropanol (1 ml) was added to a solution of 2-chloro-5-[3-[(methylsulfonyl)oxy]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.270 g, Example 6e) in tetrahydrofuran (30 ml) and the solution heated at reflux for 12 h. On cooling to ambient temperature the reaction mixture was diluted with water and extracted thrice with dichloromethane. The organic extracts were combined, dried over magnesium sulfate and concentrated under reduced pressure. Purification by preparative reverse phase HPLC eluting with a gradient of acetonitrile/0.1% aqueous ammonium acetate (25-95%), gave the title compound as the acetate salt. Treatment with 4M hydrochloric acid in dioxane gave the title compound as the hydrochloride salt (0.070 g).
- MS (APCI+ve) 419/421 (M+H)+
- 1H NMR (DMSO-d) δ 8.67 (2H, s); 8.31 (1H, t); 7.41(1H, d); 7.30-7.25 (2H, m); 4.74 (1H, t); 3.47 (2H, q); 2.95-2.85 (6H, m); 2.67 (2H, t); 2.00-1.84 (5H, m); 1.76 (2H, quin); 1.63 (6H, q); 1.52 (6H, s).
-
- Methylamine (2M tetrahydrofuran, 8 ml) was added to 2-chloro-5-[3-[(methylsulfonyl)oxy]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.250 g, Example 6e) and heated in a sealed tube at 70° C. for 18 h. On cooling to ambient temperature, the solution was diluted with ethyl acetate and extracted twice with saturated sodium hydrogencarbonate solution and once with brine, dried over magnesium sulfate and concentrated under reduced pressure. Purification by preparative reverse phase HPLC (eluting with a gradient of acetonitrile in 0.1% aqueous ammonium acetate/25-95%) gave the title compound as the acetate salt (0.140 g).
- MS (APCI+ve) 375/377 (M+H)+
- 1H NMR (DMSO-d6) δ 830 (1H, t); 7.37 (1H, d); 7.24 (1H, dd); 7.21 (1H, d); 2.92 (2H, d); 2.62 (2H, t); 2.53(2H, t); 2.30(3H, s); 1.94 (3H, s); 1.86 (3H, s); 1.57-1.77 (8H, m); 1.52 (6H, s).
-
- Isopropylamine (0.5 ml) was added to a solution of 2-chloro-5-[3-[(methylsulfonyl)oxy]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.250 g, Example 6e) in tetrahydrofuran (20 ml) and heated at 70° C. in a sealed tube for 24 h. The mixture was concentrated under reduced pressure and the residue purified by solid phase extraction on SCX resin. The title product was isolated as the hydrochloric acid salt (0.10 g).
- MS (APCI+ve) 403/405 (M+H)+
- 1H NMR (DMSO-d6) δ 8.67 (2H, s); 8.31 (1H, t); 7.41 (1H, d); 7.30 (1H, dd); 7.26 (1H, d); 3.33-3.22 (1H, m); 2.93 (2H, d); 2.87 (2H, s); 2.69 (2H, t); 1.86-1.95 (5H, m); 1.63 (6H, q); 1.52 (6H, s); 1.22 (6H, d).
-
- 2-Methyl-1,2-propanediamine (0.12 ml) was added to a solution of 2-chloro-5-[3-[(methylsulfonyl)oxy]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.250 g, Example 6e) in tetrahydrofuran (4 ml) and heated at 60° C. in a sealed tube for 12 h. On cooling to ambient temperature, the mixture was diluted with ethyl acetate and extracted twice with saturated sodium hydrogencarbonate solution and once with brine, dried over magnesium sulfate and concentrated under reduced pressure. Purification by preparative reverse phase HPLC (eluting with a gradient of acetonitrile in 0.1% aqueous ammonium acetate/25-95%) gave the title compound as the acetate salt. Treatment with 4M hydrochloric acid in dioxane gave the title compound as the dihydrochloride salt (0.045 g).
- MS (APCI+ve) 432/434 (MH)+
- 1H NMR (DMSO-d6) δ 9.40 (2H, m); 8.60 (3H, m); 8.32 (1H, t); 7.41 (1H, d); 7.31 (1H, d); 7.27 (1H, s); 3.20 (2H, s); 2.92 (4H, d); 2.71 (2H, t); 2.01 (2H, quin); 1.94 (3H, s); 1.63 (6H, q); 1.52 (6H, s); 1.39 (6H, s).
-
- 4-Amino-1-butanol (0.11 ml) was added to a solution of 2-chloro-5-[3-[(methylsulfonyl)oxy]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.25 g, Example 6e) in tetrahydrofuran (4 ml) and heated at 60° C. in a sealed tube for 12 h. On cooling to ambient temperature, the mixture was diluted with ethyl acetate and extracted twice with saturated aqueous sodium hydrogencarbonate solution and once with brine, dried over magnesium sulfite and concentrated under reduced pressure. Purification by preparative reverse phase HPLC (eluting with a gradient of acetonitrile in 0.1% aqueous ammonium acetate/25-95%) gave the title compound as the acetate salt. Treatment with aqueous 2M sodium hydroxide and extraction into ethyl acetate gave the title compound (0.065 g).
- MS (APCI+ve) 433/435 (M+H)+
- 1H NMR (DMSO-d6) δ 8.28 (1H, t); 7.35 (1H, d); 7.24 (1H, dd); 7.20 (1H, d); 3.37 (2H, t); 2.92 (2H, d); 2.63 (2H, t); 2.40-2.60 (4H, m); 1.92 (3H, s); 1.70-1.55 (8H, m); 1.52 (6H, s); 1.40-1.45 (4H, m).
-
- 2-Hydroxy-2-methyl-1-propylamine [prepared according to Journal American Chemical Society (1941), 63, p1034] (0.25 ml) was added to a solution of 2-chloro-5-[3-[(methylsulfonyl)oxy]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.250 g, Example 6e) in butan-1-ol (8 ml) and healed at 100° C. in a sealed tube for 24 h. On cooling to ambient temperature, the mixture was diluted with ethyl acetate and extracted twice with saturated aqueous sodium hydrogencarbonate solution and once with brine, dried over magnesium sulfate and concentrated under reduced pressure. The residue was purified by solid phase extraction on SCX resin and preparative reverse phase HPLC (eluting with a gradient of acetonitrile in 0.1% aqueous ammonium acetate/25-95%) to give the title compound as the acetate salt (0.160 g).
- MS (APCI+ve) 433/435 (M+H)+
- 1H NMR (DMSO-d6) δ 8.29 (1H, t); 7.36 (1H, d); 7.26 (1H, d); 7.21 (1H, s); 2.92 (2H; d); 2.63 (2H, t); 2.55 (2H, t); 2.40 (2H, s); 1.94 (3H, s); 1.88 (3H, s); 1.80-1.58 (8H, m); 1.52 (6H, s); 1.08 (6H, s).
-
- 2-Chloro-5-iodobenzoic acid (5.0 g), tetrabutylammonium chloride (5.0 g), sodium hydrogencarbonate (5.3 g) and allyl alcohol (1.6 ml) were combined in N,N-dimethylformamide (50 ml) and PdCl2 (0.6 g) was added under nitrogen. After 24 h ethyl acetate and 2M hydrochloric acid were added to the crude reaction mixture and the precipitated Pd filtered off. The organic phase was separated and washed thrice with 2M hydrochloric acid then once with brine and dried over magnesium sulfate, filtered and evaporate. Purification by chromatography on silica (eluting ethyl acetate: acetic acid 19:1) gave the subtitled product as an oil (2.77 g).
- MS m/z 212/214
- 1H NMR (CDCl3) δ 9.82 (1H, s); 7.83 (1H, d); 7.42 (1H, d); 7.30 (1H, dd); 2.98 (2H, t); 2.83 (2H, t).
- Sodium triacetoxyborohydride (310 mg) was added to a solution of (2-aminoethyl)methyl-1,1-dimethylethyl carbamic acid ester [prepared according to J. Med. Chem (1990), 33(1), 100] (0.156 g) and 2-chloro-5-(3-oxopropyl)-benzoic acid (0.21 g, Example 13a) in methanol (15 ml). After 24 h, acetic acid (0.2 ml) was added and the mixture evaporated to dryness. The residue was redissolved in dichloromethane (10 ml), triethylamine (0.45 ml) and (1,1-dimethylethoxy)carbonyl 1,1-dimethylethyl carbonic acid ester (1 g) was added. After 24 h the reaction mixture was washed twice with 10% KHSO4, once with brine and dried over magnesium sulfate, filtered and evaporated. Purification by chromatography on silica (eluting with iso-hexane:ethyl acetate:acetic acid/80:20:1 then ethyl acetate:acetic acid/100:1) gave the subtitled product as an oil (0.2 g).
- MS (APCI+ve) 471/473 (M+H)+
- PyBrOP (0.2 g) was added to a solution of 2-chloro-5-[3-[[(1,1-dimethylethoxy)carbonyl][2-[[(1,1-dimethylethoxy)carbonyl]methylamino]ethyl]-amino]propyl]-benzoic acid (0.2 g, Example 13b), adamantanemethylamine (0.1 ml) and triethylamine (0.15 ml) in N,N-dimethylformamide (10 ml). After 1 h the reaction mixture was diluted with ethyl acetate and washed with water, then washed twice with ammonium chloride solution, twice with saturated sodium hydrogencarbonate solution and once with brine. The organic extracts were dried over magnesium sulfate, filtered, evaporated and purified by chromatography on silica (eluting with dichloromethane:methanol/2-10%). The product was redissolved in dichloromethane methanol/1:1 (15 ml) and 4M hydrochloric acid in dioxane (2 ml) added. The mixture was stirred until deprotection was complete then purified by prep RP-HPLC (acetonitrile/0.1% aqueous trifluoroacetic acid). Conversion to the hydrochloride salt by treatment with 4M hydrochloric acid in 1,4-dioxane/methanol gave the title compound (0.055 g).
- MS (APCI+ve) 418/420 (M+H)+
- 1H NMR (DMSO-d6) δ 9.50-9.00 (4H, m); 7.42 (1H, d); 7.29 (1H, d); 7.27 (1H, s); 3.25 (4H, s, br); 3.05-2.90 (4H, m); 2.70 (2H, t); 2.60 (3H, s); 2.00-1.90(5H, m); 1.63 (6H, q); 1.52 (6H, s).
-
- 2-Chloro-5-iodobenzoic acid (10.0 g) was suspended in dichloromethane (160 ml) then oxalyl chloride (4.0 ml) was added followed by N,N-dimethylformamide (40 μl). After 24 h the solvent was evaporated to afford a white solid, which was redissolved in dichloromethane (160 ml). Triethylamine (14.8 ml) was added followed by adamantylmethylamine (6.9 ml with cooling to maintain a temperature below 30° C. The resulting cloudy mixture was stirred for 1 h, then evaporated to give a pale yellow solid. This was stirred in a mixture of ethyl acetate (400 ml) and 2M hydrochloric acid (300 ml) until the solid dissolved to give 2 clear phases. The (upper) organic phase was separated and washed with 2M aqueous sodium hydroxide solution (300 ml), then dried (Na2SO4) and evaporated to a yellow solid. The solid was suspended in iso-hexane (100 ml), then filtered and washed with more iso-hexane (40 ml). The resulting off-white solid was dried in a vacuum oven at 40° C. (14.0 g).
- MS (APCI+ve) 430/432 (M+H)+
- 1H NMR (CDCl3) δ 8.00 (1H, d); 7.66 (1H, dd); 7.14 (1H, d); 6.17 (1H, s, br); 3.17 (2H, d); 2.01 (3H, s); 1.69 (6H, q); 1.58 (6H, d).
- 2-Chloro-5-iodo-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (5.00 g, Example 14a), tetrabutylammonium chloride (3.40 g) and sodium hydrogencarbonate (2.44 g) were charged to a flask. Pd(OAc)2 (0.0533 g), toluene (50 ml) and allyl alcohol (1.01 ml) were added to afford a pale brown mixture which was heated at 80° C. for 5 h. The resulting dark brown mixture was cooled to ambient then filtered to remove the solid residues. These were washed with further toluene (2×50 ml) and the combined toluene extracts then washed with water (100 ml), dried over MgSO4 and concentrated to a light brown solid (3.82 g).
- MS (APCI+ve) 360/362 (M+H)+
- 1H NMR (CDCl3) δ 9.81 (1H, s), 7.56 (1H, s); 7.32 (1H, d); 7.19 (1H, d); 6.28 (1H, s, br); 3.18 (2H, d); 2.96 (2H, t); 2.81 (2H, t); 2.01 (3H, s); 1.70 (6H, q); 1.58 (6H, s).
- Sodium triacetoxyborohydride (0.6 g) was added to a solution of 2-chloro-5-(3-oxopropyl)-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.5 g, Example 14b) and (S)-2-hydroxypropylamine (0.31 g) in dichloromethane (5 ml). After 24 h the crude reaction mixture was purified by flash chromatography (eluting with 5-20% methanol in dichloromethane+1% ammonia) and the hydrochloride salt precipitated from ether/methanol 19:1, to afford the title compound as a white solid (0.19 g).
- MS (APCI+ve) 419/421 (M+H)+
- 1H NMR (DMSO-d6) δ 8.70-8.40 (2H, d, br); 8.30 (1H, t); 7.41 (1H, d); 7.28 (1H, dd); 7.24 (1H, d); 5.32 (1H, d); 3.97-3.90 (1H, m); 3.00-2.85 (5H, m); 2.75 (1H, t); 2.65 (2H, t); 2.00-1.90 (5H, m); 1.64 (6H, q); 1.52 (6H, s); 1.09 (3H, d).
-
- Prepared according to the method described for Example 14.
- MS (APCI+ve) 419/421 (M+H)+
- 1H NMR (DMSO-d6) δ 8.70-8.40 (2H, d, br); 8.30 (1H, t); 7.41 (1H, d); 7.28 (1H, dd); 7.24 (1H, d); 5.32 (1H, d); 3.97-3.90 (1H, m); 3.00-2.85 (5H, m); 2.75 (1H, t); 2.65 (2H, t); 2.00-1.90 (5H, m); 1.64 (6H, q); 1.52 (6H, s); 1.09 (3H, d).
-
- Prepared according to the method described for Example 14.
- MS (APCI+ve) 419/421 (M+H)+
- 1H NMR (DMSO-d6) δ8.80-8.40 (2H, d, br); 8.31 (1H, t); 7.42 (1H, d); 7.28 (1H, dd); 7.25 (1H, d); 5.36 (1H, s); 3.65-3.60 (1H, d, br); 3.55-3.45 (1H, m); 3.25-3.15 (1H, m); 2.95-2.85 (4H, m); 2.65 (2H, t); 2.00-1.90 (5H, m); 1.63 (6H, q); 1.52 (6H, s); 1.20 (3H, d).
-
- Prepared according to the method described for Example 14.
- MS (APCI+ve) 449/451 (M+H)+
- 1H NMR (DMSO-d6) δ 8.27 (1H, t); 7.36 (1H, d); 7.24 (1H, dd); 7.21 (1H, d); 4.32 (2H, s); 3.22 (4H, s); 2.92 (2H, d); 2.65(2H, t); 2.45 (2H, q(on edge of DMSO)); 1.92 (3H, s); 1.70-1.57 (8H, m); 1.52 (6H, s); 0.85 (3H, s).
-
- Prepared according to the method described for Example 14.
- MS (APCI+ve) 446/448 (M+H)+
- 1H NMR (DMSO-d6) δ 8.90 (2H, s, br); 832 (2H, t); 8.22 (1H, t); 7.41 (1H, d); 7.28 (1H, dd); 7.24(1H, d); 3.33 (2H, q); 2.95-2.85 (6H, m); 2.63 (2H, t); 2.00-1.86 (5H, m); 1.84 (3H, s); 1.63 (6H, q); 1.52 (6H, s).
-
- Prepared according to the method described for Example 14.
- MS (APCI+ve) 460/462 (M+H)+
- 1H NMR (DMSO-d6) δ 10.70 (1H, s); 9.48 (2H, s); 8.31 (1H, t); 7.42 (1H, d); 7.30 (1H, dd); 7.27 (1H, d); 3.50-3.30 (2H, m); 3.25-3.10 (4H, m); 3.00-2.90 (4H, d, br); 2.71 (2H, t); 2.00-1.90 (5H, m); 1.63 (6H, s); 1.52 (6H, s); 1.24 (6H, t).
-
- Prepared according to the method described for Example 14.
- MS (APCI+ve) 433/435 (M+H)+
- 1H NMR (DMSO-d6) 8.77 (2H, s, br); 8.31 (1H, t); 7.41 (1H, d); 7.28 (1H, dd); 7.25 (1H, d); 3.40 (2H, t); 3.23 (3H, s); 3.00-2.75 (6H, m); 2.67 (2H, t); 2.00-1.80 (7H, m), 1.63 (6H, q); 1.52(6H, s).
-
- Prepared according to the method described for Example 14.
- MS (APCI+ve) (M+H)+
- 1H NMR (DMSO-d6) δ 8.57 (2H, s, br); 8.30(1H, t); 7.42 (1H, d); 7.29 (1H, dd); 7.25 (1H, d); 4.61 (1H, s); 3.05-2.85 (6H, m); 2.64 (2H, t); 2.00-1.82 (5H, m); 1.73-1.53 (8H, m); 1.52 (6H, s); 1.12 (6H, s).
-
- Prepared according to the method described for Example 14.
- mp 245-248° C.
- MS (APCI+ve) 419/421 (M+H)+
- 1H NMR (DMSO-d6) δ 8.79 (2H, s); 8.30 (1H, t); 7.41 (1H, d); 7.27 (1H, dd); 7.25 (1H, d); 3.58 (2H, t); 3.30 (3H, s); 3.09 (2H, s, br); 2.95-2.85 (4H, m); 2.67 (2H, t); 1.95-1.86 (5H, m); 1.63 (6H, q); 1.52 (6H, s).
-
- (3-Hydroxypropyl)methyl-carbamic acid, 1,1-dimethylethyl ester (0.272 g) in tetrahydrofuran (5 ml) was cooled to 0° C. under nitrogen. Sodium hydride (60% dispersion in oil, 0.110 g) was added. The mixture was allowed to warm to room temperature and stirred for 30 min. 5-(Bromomethyl)-2-chloro-benzoic acid (0.300 g) in tetrahydrofuran (3 ml) was added and the mixture heated at 55° C. for 6 h. The solution was cooled, poured into saturated aqueous potassium hydrogensulfate solution, extracted into ethyl acetate (×3), dried over magnesium sulfate, filtered and concentrated under reduced pressure to afford the subtitled compound (0.431 g).
- MS (ESI+ve) 358 (M+H)+ (ESI−ve) 356 (M−H)+
- 2-Chloro-5-[[3-[[(1,1-dimethylethoxy)carbonyl]methylamino]propoxy]methyl]-benzoic acid (0.318 g, Example 23a), carbonyl diimidazole (0.165 g) and dimethylformamide (10 ml) were heated at 50° C. under nitrogen for 30 min. The mixture was allowed to cool to room temperature and 1-adamantanemethylamine (0.18 ml) was added. The mixture was stirred at room temperature for 20 h then poured into ethyl acetate and washed with saturated aqueous sodium hydrogencarbonate solution followed by brine. The solution was dried over magnesium sulfate, filtered and concentrated under reduced pressure. The residue was purified by column chromatography over silica gel (eluting with 2:1 isohexane/ethyl acetate) to afford the subtitled compound (0.236 g).
- MS (ESI+ve) 505 (M+H)+
- [3-[[4-Chloro-3-[[(tricyclo[3.3.1.13,7]dec-1-ylmethyl)amino]carbonyl]phenyl]-methoxy]propyl]methyl-carbamic acid, 1,1-dimethylethyl ester (0.236 g, Example 23b), 4M hydrogen chloride in 1,4-dioxane (5 ml) and methanol (5 ml) were stirred together under nitrogen for 3 h, then poured into 25% aqueous ammonia solution and concentrated under reduced pressure to give the free base. This was purified by column chromatography over silica gel, eluting with 19:1:0.1/dichloromethane:methanol:ammonia to afford the title compound as an oil (0.106 g).
- MS (APCI+ve) 405/407 (M+H)+
- 1H NMR (CDCl3) δ 7.64 (1H, s); 7.39-7.33 (2H, m); 6.29 (1H, t, br); 4.49 (2H, s); 3.55 (2H, t); 318-3.17 (2H, d); 2.72-2.68 (2H, t); 2.44 (3H, s); 2.01 (3H, s, br); 1.86-1.79 (2H, m), 1.75-1.63 (6H, m); 1.59 (6H, s).
-
- To a solution of 2-chloro-5-(bromomethyl)-benzoic acid (1.0 g) in dichloromethane (25 ml) at 0° C. was added dimethylformamide (0.05 ml) followed by oxalyl chloride (0.52 ml). The reaction was allowed to warm to room temperature and stirred for 30 min. The volatiles were removed under vacuum and the residue dried under high vacuum. The residue was dissolved in dichloromethane (20 ml) and added to a solution of 2-adamantanemethylamine hydrochloride salt (0.95 g) in dichloromethane (20 ml) and diisopropylethylamine (2 ml) at 0° C. The reaction was allowed to warm to room temperature and stirred for 2 h. The organics were washed with water (20 ml) then saturated aqueous ammonium chloride solution and the organic layer dried over magnesium sulfate then filtered. The filtrate was concentrated under reduced pressure to a solid. The crude material was recrystallised from dichloromethane/hexane to afford the subtitled compound as a white solid (1.3 g).
- A mixture of 5-(bromomethyl)-2-chloro-N-(2-tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (Example 24a, 0.300 g), bis(2-hydroxyethyl)-carbamic acid, 1,1-dimethylethyl ester (0.312 g) and silver trifluoroacetate (0.336 g) in dichloromethane (30 ml) was stirred under nitrogen at room temperature for 20 h. The solution was then decanted from the silver salts and the dichloromethane removed under vacuum. The crude material was purified on silica gel (eluting with ethyl acetate) to afford the subtitled compound as an oil (0.249 g).
- MS (ESI+ve) MW 521/523 (M+H)+
- [2-[[4-Chloro-3-[[(tricyclo[3.3.1.13,7]dec-1-ylmethyl)amino]carbonyl]phenyl]-methoxy]ethyl](2-hydroxyethyl)-carbamic acid, 1,1-dimethylethyl ester (0.286 g, Example 23b), 4M hydrogen chloride in 1,4-dioxane (10 ml) and methanol (10 ml) were stirred together under nitrogen for 20 h, poured into 25% aqueous ammonia solution and to concentrated under reduced pressure to give the free base. This was purified by column chromatography over silica gel, eluting with 19:1:0.1/dichloromethane:methanol:ammonia and further purified by reverse-phase hplc (75:25 to 5:95/0.1% aqueous ammonium acetate:acetonitrile) to afford the title compound as an oil (0.051 g).
- MS (APCI+ve) 421/423 (M+H)+
- 1H NMR (CDCl3) δ 7.66 (1H, d); 7.38 (1H, d); 7.31 (1H dd); 6.68 (1H, t, br); 4.52 (2H, s); 3.72 (2H, t); 3.63 (2H, t); 3.17 (2H, d); 2.95 (2H, t); 2.85 (2H, t); 2.01 (3H, s, br); 1.91(2H, s); 1.75-1.63 (6H, m); 1.59 (6H, s).
-
- A mixture of 5-(bromomethyl)-2-chloro-N-(2-tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (Example 24a, 0.300 g), ethylene glycol (0.094 g) and silver trifluoroacetate (0.336 g) in dichloromethane (10 ml) was stirred under nitrogen at room temperature for 20 h. The solution was then decanted from the silver salts and the dichloromethane removed under vacuum. The crude material was purified on silica (eluting with ethyl acetate) to afford the subtitled compound as an oil (0.228 g).
- MS (ESI+ve) MW 378/380 (M+H)+
- 2-Chloro-5-[(2-hydroxyethoxy)methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.228 g, Example 25a) and triethylamine (0.21 ml) in dichloromethane (10 ml) were cooled to 5° C. under nitrogen and methanesulfonyl chloride (0.1 ml) was added. The mixture was stirred at room temperature for 20 h then poured into 2N hydrochloric acid, and extracted into ethyl acetate. The combined extracts were washed with 2N hydrochloric acid, saturated aqueous sodium hydrogencarbonate solution then brine, and dried over magnesium sulfate. The organics were filtered and concentrated under reduced pressure to afford the subtitled compound as a white solid (0.160 g).
- 1H NMR (CDCl3) δ 7.66 (1H, s); 7.41-7.33 (2H, m); 6.32 (1H, t, br); 4.57 (2H, s); 4.40-4.38 (2H, m); 3.77-3.75 (2H, m); 3.17-3.15 (2H, d); 3.04 (3H, s); 201 (3H, s, br); 1.75-1.64 (6H, m); 1.59 (6H, s, br).
- 2-Chloro-5-[[2-[(methylsulfonyl)oxy]ethoxy]methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.160 g, Example 25b), 3-amino-1-propanol (0.27 ml) and n-butanol (4 ml) were heated together in a sealed tube at 110° C. for 24 h. The mixture was cooled, poured into 2N sodium hydroxide solution and extracted into ethyl acetate. The extracts were dried over sodium sulfate, filtered and concentrated under reduced pressure Chromatography over silica gel (eluting with 19:1:0.1/dichloromethane methanol:ammonia) and further purification by reverse-phase HPLC (75:25 to 5:95/0.1% aqueous ammonium acetate:acetonitrile) afforded the title compound as a white solid (0.081 g).
- MS (APCI+ve) 435/437 (M+H)+
- 1H NMR (CDCl3) δ 7.75 (1H, s); 7.37 (1H, d); 7.27 (1H, d); 6.83 (1H, t, br); 4.56 (2H, s); 3.90 (4H, s, br); 3.21 (4H, s, br); 3.17 (2H, d); 2.01 (5H, s, br); 1.75-1.63 (6H, m); 1.59 (6H, s).
-
- To a suspension of 5-bromo-2-chlorobenzoic acid (5.00 g) in dichloromethane (25 ml) at 0° C. was added oxalyl chloride (3.7 ml) and DMF (5 drops). The resulting mixture was stirred at room temperature under a nitrogen atmosphere for 1 h, then concentrated under reduced pressure to yield a solid. The solid was dissolved in dichloromethane (20 ml) and added dropwise to a solution of 1-adamantanemethylamine (3.36 g) and N-N-diisopropylethylamine (5.55 ml) in dichloromethane (20 ml). The resulting solution was allowed to stir at room temperature under a nitrogen atmosphere for 20 h. The reaction mixture was diluted with dichloromethane and washed in sequence with water, 10% aqueous potassium carbonate solution, 10% aqueous potassium hydrogen sulfate and saturated brine. The organic phase was then dried over sodium sulfate, filtered and concentrated under reduced pressure to afford the subtitled compound as a solid (7.84 g).
- MS (APCI+ve) 383/385 (M+H)+
- 1H NMR (DMSO-d6) δ 8.42 (1H, t); 7.63 (1H, dd); 7.57 (1H, m); 7.45 (1H, d), 2.93 (2H, d); 1.94 (3H, s, br); 1.69-1.58 (6H, m); 1.51 (6H, s).
- A solution of 5-bromo-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (3.25 g, Example 25a) in tetrahydrofuran (150 ml) was cooled to −78° C. under a nitrogen atmosphere. A solution of 1.4M methyllithium in diethyl ether (6.1 ml) was added to this solution over 2 min. The mixture was stirred at −78° C. for 10 min, then a 1.7M solution of tert-butyllithium in pentane (10.0 ml) was added dropwise. The mixture was stirred at −78° C. for a further 10 min, then dimethylformamide (1.0 ml) was added. The resulting solution was stirred at −78° C. for 30 min, quenched with saturated aqueous ammonium chloride solution (100 ml) and extracted with ethyl acetate. The combined extracts were dried over sodium sulfate, filtered, and the filtrate concentrated under reduced pressure to give the subtitled compound as a solid (2.76 g).
- MS (APCI+ve) 332/334 (M+H)+
- 1H NMR (DMSO-d6) δ 10.04 (1H, s); 8.49 (1H, t); 7.96-7.91(2H, m); 7.74 (1H, d); 2.96 (2H, d), 1.95 (3H, s); 1.64 (6H, m); 1.53 (6H, d).
- A mixture of 2-chloro-5-formyl-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.244 g, Example 25b), N-isopropyl-1,3-propanediamine (0.211 g), p-toluenesulfonic acid (0.005 g) and toluene (30 ml) were refluxed together under Dean-Stark conditions for 3 h. The mixture was cooled and concentrated under reduced pressure to an oil. This was dissolved in ethanol (30 ml) and cooled to 0° C. under a nitrogen atmosphere. Solid sodium borohydride (0.040 g) was added portionwise and the mixture stirred at room temperature for 30 min, then concentrated under reduced pressure and the residue purified by column chromatography over silica (eluting with 9:1:0.1 dichloromethane/methanol/35% aqueous ammonia) to give the title compound (0.015 g) and a by-product (see Example 27).
- MS (APCI+ve) 432/434 (M+H)+
- 1H NMR (CDCl3) δ 7.64 (1H, s); 7.37-7.32 (2H, m); 6.28 (1H s, br); 3.78 (2H, s); 3.18 (2H, d); 2.84-2.74 (1H, m); 2.70-2.64 (4H, m); 2.01 (3H, s, br); 1.76-1.63 (8H, m); 1.59 (6H, s, br); 1.05 (6H, d).
-
- Formed as a by-product in Example 26c above (0.125 g).
- MS (APCI+ve) 390/392 (M+H)+.
- 1H NMR (CDCl3) δ 7.65 (1H, s); 7.37-7.32 (2H, m); 6.31 (1H, t, br); 3.79 (2H, s); 3.18 (2H, d); 2.77 (2H, t); 2.68 (2H, t); 2.01 (3H, s, br); 1.75-1.61 (8H, m); 1.59 (6H, s, br).
-
- Synthesised as in Example 26 using 2-chloro-5-formyl-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.500 g, Example 25b) and N-isopropylethylenediamine (0.186 g) to give the title compound as a solid (0.105 g).
- MS (APCI+ve) 418/420 (M+H)+
- 1H NMR (CDCl3) δ 7.65 (1H, s); 7.34 (2H, s); 6.26 (1H, t, br); 3.79 (2H, s); 3.18 (2H, d), 2.79-2.69 (5H, m); 2.01 (3H, s, br); 1.75-1.64 (6H, m); 1.59 (6H, s, br); 1.50 (2H, s, br), 1.05 (6H, d).
-
- 2-Chloro-5-iodobenzoic acid (10.0 g) was suspended in dichloromethane (160 ml) then oxalyl chloride (4.0 ml) was added followed by N,N-dimethylformamide (40 μl). After 24 h the solvent was evaporated to afford a white solid, which was then redissolved in dichloromethane (160 ml). Triethylamine (14.8 ml) was added, followed by adamantane methylamine (6.9 ml) with cooling to keep the temperature below 30° C. The resulting slightly cloudy mixture was stirred for 1 h, then solvent was evaporated to give a pale yellow solid. The solid was stirred in a mixture of ethyl acetate (400 ml) and 2M hydrochloric acid (300 ml) until the solid dissolved to afford two clear phases. The (upper) organic phase was separated off and washed with 2M sodium hydroxide solution (300 ml), then dried (Na2SO4) and evaporated to a yellow solid. The solid was suspended in iso-hexane (100 ml), then filtered and washed with more iso-hexane (40 ml), and the resulting off-white solid dried in vacuo at 40° C. to afford the subtitled compound (14.0 g).
- MS (APCI+ve) 430/432 (M+H)+
- 1H NMR (CDCl3) δ 8.00 (1H, d); 7.66 (1H, dd); 7.14 (1H, d); 6.17 (1H, s, br); 3.17 (2H, d); 2.01 (3H, s); 1.69 (6H, q); 1.58 (6H, d).
- 2-Chloro-5-iodo-K-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (5.00 g Example 29a), tetrabutylammonium chloride (3.40 g) and sodium hydrogencarbonate (2.44 g) were charged to a flask, followed by Pd(OAc)2 (53.3 mg), toluene (50 ml) and allyl alcohol (1.01 ml). The pale brown mixture was heated at 80° C. for 5 h, then cooled to ambient temperature. The mixture was filtered and the residues washed with additional toluene (50 ml+50 ml). The combined toluene solutions were washed with water (100 ml) then dried over MgSO4 and evaporated to a light brown solid (3.82 g).
- MS (APCI+ve) 360/362 (M+H)+
- 1H NMR (CDCl3) δ 9.81 (1H, s), 7.56 (1H, s); 7.32 (1H, d); 7.19 (1H, d); 6.28 (1H, s, br); 3.18 (2H, d); 2.96 (2H, t); 2.81 (2H, t); 2.01 (3H, s); 1.70 (6H, q); 1.58 (6H, s).
- Sodium triacetoxyborohydride (1.86 g) was added to a solution of 2-chloro-5-(3-oxopropyl)-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (1.57 g, Example 29b) and 3-amino-1-propanol (0.8 ml) in dichloromethane (150 ml). After 24 h the crude reaction mixture was purified by chromatography (eluting with 5-20% methanol in dichloromethane+1% ammonia) to give the subtitled compound as a white solid (1.05 g).
- MS (APCI+ve) 419/421 (M+H)+
- 2-Chloro-5-[3-[(3-hydroxypropyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.271 g, Example 29c), N,N-diisopropylethylamine (0.50 ml) and tetrahydrofuran (10 ml) were stirred together under nitrogen. Trimethylacetyl chloride (0.26 ml) was added dropwise and the mixture stirred at room temperature for 48 h, then poured into water and extracted into ethyl acetate. The combined extracts were dried over sodium sulfate, filtered, concentrated under reduced pressure and chromatographed over silica (eluting with 4:1 isohexane/ethyl acetate) to give the subtitled compound (0.158 g) as an oil.
- MS (ESI+ve) 603/605 (M+H)+
- 3-[[3-[4-Chloro-3-[[(tricyclo[3.3.1.13,7]dec-1-ylmethyl)amino]carbonyl]-phenyl]propyl][(1,1-dimethylethoxy)carbonyl]amino]propanoic acid, 2,2-dimethylpropyl ester (0.158 g, Example 29d), trifluoroacetic acid (2 ml) and dichloromethane (2 ml) were stirred together under nitrogen for 15 min, then concentrated under reduced pressure to give the title compound (0.170 g).
- MS (APCI+ve) 503/505 (M+H)+
- 1H NMR (CDCl3) δ 7.40 (1H d); 7.32 (1H, d), 7.14 (1H dd); 4.12 (2H, t); 3.16 (2H, d); 3.09-2.89 (4H, m); 2.64 (2H, t); 2.06-1.92 (7H, m); 1.75-1.63 (6H, m); 1.58 (6H, s); 1.18 (9H, s).
-
- Potassium cyanide (525 mg) and 18-crown-6 (150 mg) were added to a solution of 5-(bromomethyl)-2-chloro-N-(2-tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (Example 24a, 1.8 g) in ethanol (50 ml) and the mixture heated under reflux for 24 h. On cooling the reaction mixture was evaporated to dryness and the residue partitioned between ethyl acetate and saturated sodium hydrogencarbonate solution. The organics were separated, washed with brine, dried over magnesium sulfate, filtered and evaporated. Purification by chromatography on silica (eluting with a gradient of iso-hexane/ethyl acetate/4:1 to 6:4) gave the subtitled product as a pink solid (1.0 g).
- MS (APCI+ve) 343/345 (M+H)+
- 1H NMR (DMSO-d6) δ 8.38 (1H, t); 7.52 (1H, d); 7.43-7.38 (2H, m); 4.08 (2H, s); 2.94 (2H, d); 1.92 (3H, s); 1.63 (6H, q); 1.52 (6H, s).
- Sodium borohydride (1.6 g) was added portionwise to a cooled solution of 2-chloro-5-(cyanomethyl)-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)benzamide (Example 30a, 2.1 g), (1,1-dimethylethoxy)carbonyl carbonic acid, 1,1-dimethylethyl ester (2.67 g) and cobalt(II) chloride (1.6 g) in methanol (100 ml). After 1.5 h the solvent was evaporated and the residue slurried between ethyl acetate and saturated sodium hydrogencarbonate solution and the insoluble cobalt salts filtered. The organic phase was separated and washed with brine, dried over sodium sulfate, filtered and evaporated to give the subtitled product as a foam (2.2 g).
- MS (APCI+ve) 447/449 (M+H)+
- 1H NMR (CDCl3) δ 7.54 (1H, d); 7.34 (1H, d); 7.19 (1H, dd); 628 (1H, s, br), 4.54 (1H, s, br); 3.39 (2H, q); 3.18 (2H, d); 2.80 (2H, t); 2.04 (3H, s); 1.70 (6H, q); 1.64 (6H, s); 1.42 (9H, s).
- Hydrochloric acid (4M in 1,4-dioxane, 3.0 ml) was added to a solution of [2-[4-chloro-3-[[(tricyclo[3.3.1.13,7]dec-1-ylmethyl)amino]carbonyl]phenyl]ethyl]carbamic acid, 1,1-dimethylethyl ester (2.2 g, Example 30b) in methanol/dichloromethane (1:1) (50 ml). After 24 h the solvent was evaporated to leave the title compound as a foam (1.85 g).
- MS (APCI+ve) 347/349 (M+H)+
- 1H NMR (DMSO-d6) δ 8.31 (1H, t); 8.15 (3H, s, br); 7.43 (1H, d); 7.31 (2H, m); 3.05-2.98 (2H, m); 2.95-2.85 (4H, m); 1.94 (3H, s); 1.63 (6H, q); 1.52 (6H, s).
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 475/477 (M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 415/417(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 446/448 (M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 445/447 (M+H)+
-
- Prepared according to the procedure described in 6f
- MS (APCI+ve) 445/447 (M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 488/490 (M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 419/421 (M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 445/447 (M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 447/449 (M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 461/463(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve)417/419(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 389/391(M+H)+
- 5-[3-(Butylmethylamino)propyl]-2 chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 431/433(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 447/449(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 433/435(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 473/475(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 431/433(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 417/419(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 460/462(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 487/489(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 457/459(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 443/445(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 461/463(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 401/403(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 432/434(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 447/449(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 417/419(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 446/448(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 429/431 (M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 445/447(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 417/419(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 447/449(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 417/419(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 435/437(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 433/435(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 457/459(M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 401/403 (M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 407/409 (M+H)+
-
- Prepared according to the procedure described in Example 6f.
- MS (APCI+ve) 433/435 (M+H)+
-
- 2-Chloro-5-(3-hydroxypropyl)-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (5.9 g, Example 6d), iodine (6.2 g, 24.4 mmol), triphenylphosphine (6.4 g, 24.4 mmol) and imidazole (1.66 g, 24.4 mmol) were stirred in dichloromethane (100 ml) at room temperature for 1 h. The reaction was quenched with sat. aq. Na2S2O3 and the layers were separated. The aqueous phase was extracted with ethyl acetate. The combined organic phases were dried (NaSO4), concentrated and purified by column chromatography on silica (eluting with EtOAc:isohexane/1:3) to afford the subtitled compound as a pale yellow solid (6.8 g)
- MS (APCI+ve) 472/474 (M+H)+.
- Silver trifluoroacetate (0.7 g, 3.2 mmol) was added to 1,1-dimethylethyl (3-hydroxypropyl)methyl carbamic acid (1.8 g, 9.5 mmol) (Synth. Commun. (1995), 25(14), 2135-43) in dichloromethane (20 ml). After 10 min. 2-chloro-5-(3-iodopropyl)-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)benzamide (1.0 g, Example 70a) was added and the mixture was stirred for 24 h. The resulting mixture was washed with water and concentrated. Treatment with 4M hydrochloric acid in 1,4-dioxane/methanol, concentration and purification by RPHPLC gave the title compound (26 mg) as a white solid.
- MS (APCI+ve) 433/435 (M+H)+
- 1H NMR (DMSO-d6) 8.79-8.35 (1H, m), 8.29 (1H, t, J=6.2 Hz), 7.38 (1H, d, J=8.1 Hz), 7.31-7.14 (m, 2H), 3.48-3.31 (4H, m), 2.98-2.81 (4H, m), 2.63 (2H, t, J=7.6 Hz), 2.50 (3H, s), 1.94 (3H, s), 1.87-1.73 (4H, m), 1.64 (6H, m), 1.52 (6H, m)
-
- To a stirred solution of 2-chloro-5-methyl-benzoic acid (25 g) in chloroform (500 ml) at 50° C. was added N-bromosuccinimide (27.40 g). The flask was purged with nitrogen and azobisisobutyronitrile (0.10 g) added in one portion. The solution was heated at reflux for 1 h. Further azobisisobutyronitrile (0.10 g) was added and the mixture heated a further 3 h. The solution was concentrated in vacuo, redissolved in diethyl ether and filtered to remove insoluble succinimide. The ether solution was washed with 2N aqueous hydrochloric acid solution followed by brine then dried over magnesium sulphate. The solution was concentrated to a volume of 150 ml then diluted with isohexane. After further partial concentration crystallization started. The mixture was allowed to stand in an ice-bath for 1 h. The resulting crystals were filtered, washed with isohexane and dried in vacuo to give the subtitled compound (17g).
- To a stirred solution of 5-bromomethyl-2-chloro-benzoic acid (Example 71a, 12.4 g) in dichloromethane (250 ml) and dimethylformamide (0.12 ml) at 0° C. was added oxalyl chloride (8.7 ml). The cooling bath was removed and the solution allowed to warm to room temperature. Once gas evolution had ceased the solution was concentrated in vacuo. The residue was redissolved in dichloromethane (300 ml), cooled to 0° C. and treated with diisopropylethylamine (12.4 ml) and adamantylmethylamine (7.54 ml). After 15 min, at 0° C. the solution was poured into diethyl ether (1 L) and washed with 1 N aqueous hydrochloric acid followed by brine. The organics were dried over magnesium sulphate and concentrated in vacuo to give the title compound as a white powder (19g)
- MS (APCI+ve) 396/398 (M+H)+
- 1H NMR (DMSO-d6) δ 8.39 (1H, t); 7.50-7.40 (2H, m); 4.74 (2H, s); 2.92 (2H, d); 2.50 (3H, s); 1.94 (3H, s, br); 1.67 (3H, d); 1.59 (3H, d); 1.52 (6H, s).
- A mixture 5-(bromomethyl)-2-chloro-N-(2-tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (Example 71b, 0.300 g) and ethanolamine (0.5 ml) in toluene (40 ml) was heated at 100° C. for 24 h. The mixture was cooled, poured into saturated aqueous sodium hydrogencarbonate solution, extracted into ethyl acetate, dried over magnesium sulfate, filtered and concentrated under reduced pressure to give the subtitled compound as a gum (0.280 g).
- MS (APCI+ve) MW 377/379 (M+H)+
- 2-Chloro-5-[[(2-hydroxyethyl)amino]methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.250 g, Example 71c), (1-formylcyclopropyl)-carbamic acid, 1,1-dimethylethyl ester (0.260 g), sodium triacetoxyborohydride (0.600 g) and dichloromethane (50 ml) were stirred together under nitrogen for 24 h. The mixture was poured into saturated aqueous sodium hydrogencarbonate solution, extracted into dichloromethane, dried over magnesium sulfate, filtered and concentrated under reduced pressure. The crude material was purified on silica gel (ethyl acetate), to afford the subtitled compound (0.302 g).
- MS (APCI+ve) MW 546/548 (M+H)+
- [1-[[[[4-Chloro-3-[[(tricyclo[3.3.1.13,7]dec-1-ylmethyl)amino]carbonyl]phenyl]-methyl](2-hydroxyethyl)amino]methyl]cyclopropyl]-carbamic acid, 1,1-dimethylethyl ester (Example 71d, 0.302 g) was dissolved in methanol (10 ml) and 4N HCl in dioxane (10 ml) was added. The mixture was stirred for 14 h at room temperature, then poured into 25% aqueous ammonia solution and concentrated under reduced pressure to give the free base. This was purified by column chromatography over silica (eluting with 19:1:0.1 dichloromethane/methanol/ammonia) to afford the title compound as an oil (0.230 g).
- MS (APCI+ve) MW 446/448 (M+H)+
- 1H NMR (CDCl3) δ 7.69 (1H, s); 7.37 (2H, m); 6.38 (1H, t, br); 3.73 (2H, s); 3.64 (2H, t); 3.18 (2H, d); 2.74 (2H, t); 2.49 (2H, s); 2.21 (3H, s, br); 2.01 (3H, s, br); 1.75-1.64 (6H, m); 1.59 (6H, s, br); 0.59 (2H, t); 0.40 (2H, t).
-
- 2-Chloro-5-[[(2-hydroxyethyl)amino]methyl]-N (tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (0.30 g, Example 71c), methyl(2-oxoethyl)-carbamic acid, 1,1-dimethylethyl ester (0.276 g), sodium triacetoxyborohydride (0.720 g) and dichloromethane (50 ml) were stirred together under nitrogen for 24 h. The mixture was poured into saturated aqueous sodium hydrogencarbonate solution, extracted into dichloromethane, dried over magnesium sulfate, filtered and concentrated under reduced pressure. The crude material was purified on silica (eluting with 19:1 dichloromethane/methanol) to afford the subtitled compound (0.285 g).
- MS (APCI+ve) MW 534/536 (M+H)+
- [2-[(2-Hydroxyethyl)[(4-methyl-3-[[(tricyclo[3.3.1.13,7]dec-1-ylmethyl)amino]carbonyl]phenyl]methyl]amino]ethyl]methyl-carbamic acid, 1,1-dimethylethyl ester (Example 72a, 0.285 g) was dissolved in methanol (10 ml), 4N HCl in dioxane (10 ml) was added and the mixture stirred for 14 h at room temperature. The solution was poured into 25% aqueous ammonia solution and concentrated under reduced pressure to give the free base. This was purified by chromatography over silica gel (eluting with 8:2:0.2/dichloromethane:methanol:ammonia) to afford the title compound as an oil (0.167 g).
- MS (APCI+ve) MW 434/436 (M+H)+
- 1H NMR (CDCl3) δ 7.65 (1H, s); 7.35 (2H, s); 6.41 (1H, t, br); 3.67 (2H, s); 3.57 (2H, t); 3.17 (2H, d); 2.68-2.61 (6H, m); 2.38 (3H, s); 2.01 (3H, s, br); 1.76-1.63 (6H, m); 1.60 (6H, s, br).
-
- Synthesized from 2-chloro-5-[3-[(methylsulfonyl)oxy]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (Example 6e, 0.5 g) and 3-methylhistamine (0.22 g) according to the procedure described in Example 6f to afford the title compound (0.060 g).
- MS (APCI+ve) 469/471 (M+H)+
- 1H NMR (DMSO-d6) δ 9.45-9.30 (2H, m); 9.02 (1H, s); 8.32 (1H, t); 7.55 (1H, s); 7.41 (1H, d); 7.28 (1H, d); 7.26 (1H, d); 3.82 (3H, s); 3.30-3.20 (2H, m); 3.15 (2H, t); 2.95-2.85 (4H, m); 2.70 (2H, t); 2.02-1.93 (5H, m); 1.63 (6H, q); 1.52 (6H, s).
-
- Synthesized from 2-chloro-5-[[3-[(methylsulfonyl)oxy]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (Example 6e, 1 mg) and histamine according to the procedure described in Example 6f to afford the title compound.
- MS (APCI+ve) 455/457 (M+H)+
-
- Synthesized from 2-chloro-5-[3-[(methylsulfonyl)oxy]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (Example 6e, 1 mg) and 1-(3-aminopropyl)imidazole according to the procedure described in Example 6f to afford the title compound.
- MS (APCI+ve) 469/471 (M+H)+
-
- Sodium triacetoxyborohydride (4.10 g) was added to a solution of 2-chloro-5-(3-oxopropyl)-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide (3.46 g, Example 14b) and 3-aminopropanol (1.73 ml) in dichloromethane (200 ml). After 24 h the crude reaction mixture was purified by flash chromatography (eluting with 5-20% methanol/dichloromethane+1% ammonia) and the hydrochloride salt precipitated from ether/methanol 19:1, to afford the title compound as a white solid (1.60 g).
- MS (APCI+ve) 419/421 (M+H)+
- 1H NMR (DMSO-d6) δ 8.67 (2H, s); 8.31 (1H, t); 7.41(1H, d); 7.30-7.25 (2H, m); 4.74 (1H, t); 3.47 (2H, q); 2.95-2.85 (6H, m); 2.67 (2H, t); 2.00-1.84 (5H, m); 1.76 (2H, quin); 1.63 (6H, q); 1.52 (6H, s).
- Certain compounds such as benzoylbenzoyl adenosine triphosphate (bbATP) are known to be agonists of the P2X7 receptor, effecting the formation of pores in the plasma membrane (Drug Development Research (1996), 37(3), p. 126). Consequently, when the receptor is activated using bbATP in the presence of ethidium bromide (a fluorescent DNA probe), an increase in the fluorescence of intracellular DNA-bound ethidium bromide is observed. The increase in fluorescence can be used as a measure of P2X7 receptor activation and therefore to quantify the effect of a compound on the P2X7 receptor.
- In this manner, each of the title compounds of the Examples was tested for antagonist activity at the P2X7 receptor. Thus, the test was performed in 96-well flat bottomed microtitre plates, the wells being filled with 250 μl of test solution comprising 200 μl of a suspension of THP-1 cells (2.5×106 cells/ml) containing 10−4M ethidium bromide, 25 μl of a high potassium buffer solution containing 10−5M bbATP, and 25 μl of the high potassium buffer solution containing 3×10−5M test compound. The plate was covered with a plastics sheet and incubated at 37° C. for one hour. The plate was then read in a Perkin-Elmer fluorescent plate reader, excitation 520 nm, emission 595 nm, slit widths: Ex 15 nm, Em 20 nm. For the purposes of comparison, bbATP (a P2X7 receptor agonist) and pyridoxal 5-phosphate (a P2X7 receptor antagonist) were used separately in the test as controls. From the readings obtained, a pIC50 figure was calculated for each test compound, this figure being the negative logarithm of the concentration of test compound necessary to reduce the bbATP agonist activity by 50%. Each of the compounds of the Examples demonstrated antagonist activity, having a pIC50 figure >5.0.
Claims (17)
1. A compound of general formula
wherein D represents CH2 or CH2CH2;
E represents C(O)NH or NHC(O);
R1 and R2 each independently represent hydrogen, halogen, amino, nitro, C1-C6 alkyl or trifluoromethyl, but R1 and R2 may not both simultaneously represent hydrogen;
R3 represents a group of formula
R4 represents a C1-C6 alkyl group;
X represents an oxygen or sulphur atom or a group NR13, SO or SO2;
R5 represents hydrogen, or R5 represents C1-C6 alkyl or C2-C6 alkenyl, each of which may be optionally substituted by at least one substituent selected from halogen, hydroxyl, (di)-C1-C6-alkylamino, —Y—R6,
a 5- or 6-membered heteroaromatic ring comprising from 1 to 4 heteroatoms independently selected from nitrogen, oxygen and sulphur which heteroaromatic ring may itself be optionally substituted by at least one substituent selected from halogen, hydroxyl and C1-C6 alkyl;
Y represents an oxygen or sulphur atom or a group NH, SO or SO2;
R6 represents a group —R7Z where R7 represents a C2-C6 alkyl group and Z represents an —OH, —CO2H, —NR8R9, —C(O)NR10R11 or —N(R12)C(O)—C1-C6 alkyl group, and, in the case where Y represents an oxygen or sulphur atom or a group NH, R6 additionally represents hydrogen, C1-C6 alkyl, C1-C6 alkylcarbonyl, C1-C6 alkoxycarbonyl, —C(O)NR14R15, —CH2OC(O)R16, —CH2OC(O)OR17 or —C(O)OCH2OR18;
R8, R9, R10, R11 and R12 each independently represent a hydrogen atom or a C1-C6 alkyl group;
R13 represents hydrogen, C3-C8 cycloalkyl, C3-C8 cycloalkylmethyl, or R13 represents a C1-C6 alkyl group optionally substituted by at least one substituent selected from hydroxyl and C1-C6 alkoxy; and
R14, R15, R16, R17 and R18 each independently represent C1-C6 alkyl group;
with the proviso that when E is C(O)NH, X is O, NH or N(C1-C6 alkyl), then R5 is other than a hydrogen atom or an unsubstituted C1-C6 alkyl group;
or a pharmaceutically acceptable salt or solvate thereof.
2. The compound according to claim 1 , wherein D represents CH2.
3. The compound according to claim 1 , wherein E represents NHC(O).
4. The compound according to claim 1 , wherein R1 and R2 each independently represent a hydrogen, chlorine or bromine atom, or an amino, nitro, C1-C3 alkyl or trifluoromethyl group.
5. The compound according to claim 1 , wherein X represents an oxygen atom or a group NR13.
6. The compound according to claim 5 , wherein R13 represents hydrogen, —(CH2)2OH, methyl, ethyl, n-propyl, isopropyl, n-butyl, n-pentyl, n-hexyl, cyclopropyl, cyclopentyl, cyclohexyl or cyclohexylmethyl.
7. The compound according to claim 1 , wherein R5 represents a C1-C6 alkyl group substituted by a single substituent —Y—R6.
8. The compound according to claim 1 , wherein Y represents an oxygen or sulphur atom or a group NH.
9. The compound according to claim 8 , wherein R6 represents —(CH2)2OH, —(CH2)3OH, hydrogen, methyl, isopropyl, methylcarbonyl or t-butylcarbonyl.
10. The compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, according to claim 1 which is selected from:
2-Chloro-5-[[2-(2-hydroxy-ethylamino)-ethylamino]-methyl]-N-(tricyclo[3.3.3.1.13,7]dec-1-ylmethyl)-benzamide dihydrochloride,
2-Chloro-5-[[2-(2-hydroxyethoxy)ethylamino]methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[(3-hydroxy-2,2-dimethylpropylamino)methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[(5-hydroxypentylamino)methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[2-[(2-hydroxyethylthio)ethylamino]methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[(2-hydroxyethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, acetate salt,
2-Chloro-5-[3-[(3-hydroxypropyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, hydrochloride salt,
2-Chloro-5-[3-(methylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, acetate salt,
2-Chloro-5-[3-[(1-methylethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, hydrochloride salt,
5-[3-[(2-Amino-2-methylpropyl)amino]propyl]-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, dihyrdrochloride salt,
2-Chloro-5-[3-[(4-hydroxybutyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[(2-hydroxy-2-methylpropyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, acetate salt,
2-Chloro-5-[3-[[2-(methylamino)ethyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, dihydrochloride salt,
(S)-2-Chloro-5-[3-[(2-hydroxypropyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, hydrochloride salt,
(R)-2-Chloro-5-[3-[(2-hydroxypropyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, hydrochloride salt,
(R)-2-Chloro-5-[3-[(2-hydroxy-1-methylethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, hydrochloride salt,
2-Chloro-5-[3-[[2-hydroxy-1-(hydroxymethyl)-1-methylethyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
5-[3-[[2-(Acetylamino)ethyl]amino]propyl]-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, hydrochloride salt,
2-Chloro-5-[3-[[2-(diethylamino)ethyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, dihydrochloride salt,
2-Chloro-5-[3-[(3-methoxypropyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, hydrochloride salt,
2-Chloro-5-[3-[(3-hydroxy-3-methylbutyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, hydrochloride salt,
2-Chloro-5-[3-[(2-methoxyethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, hydrochloride salt,
2-Chloro-5-[[3-(methylamino)propoxy]methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)benzamide,
2-Chloro-5-[[2-[(2-hydroxyethyl)amino]ethoxy]methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, acetic acid salt,
2-Chloro-5-[[2-[(3-hydroxypropyl)amino]ethoxy]methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide, acetic acid salt,
2-Chloro-5-[[[3-[(1-methylethyl)amino]propyl]amino]methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
5-[[(3-Aminopropyl)amino]methyl]-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[[[2-[(1-methylethyl)amino]ethyl]amino]methyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
3-[[3-[4-Chloro-3-[[(tricyclo[3.3.1.13,7]dec-1-ylmethyl)amino]-carbonyl]phenyl]propyl]amino]propanoic acid, 2,2-dimethylpropyl ester, trifluoroacetic acid salt,
5-(2-Aminoethyl)-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)benzamide,
2-Chloro-5-[3-[(2-hydroxyethyl)pentylamino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-(methyl-2-propenylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[[2-(dimethylamino)ethyl]methylamino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
5-[3-(Butylethylamino)propyl]-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-(methylpentylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[[2-(diethylamino)ethyl]ethylamino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[(2-hydroxyethyl)methylamino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-(dipropylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[(2-hydroxyethyl)(1-methylethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
5-[3-[Butyl(2-hydroxyethyl)amino]propyl]-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-(diethylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-(dimethylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
5-[3-(Butylmethylamino)propyl]-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[(2-hydroxyethyl)propylamino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[ethyl(2-hydroxyethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-(dibutylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-(ethylpropylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[methyl(1-methylethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[[3-(dimethylamino)propyl]methylamino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[cyclohexyl(2-hydroxyethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-(cyclohexylmethylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-(cyclohexylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[[1-(hydroxymethyl)-2,2-dimethylpropyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-(cyclopropylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[[2-(dimethylamino)ethyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[(3-hydroxy-2,2-dimethylpropyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[(1,1-dimethylethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[[3-(dimethylamino)propyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-(cyclopentylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-5-[3-[(1,2,2-trimethylpropyl)amino]propyl]-benzamide,
5-[3-(Butylamino)propyl]-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[[1-(hydroxymethyl)-2-methylpropyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[(1-methylpropyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[[2-(methylthio)ethyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[(2-hydroxy-1,1-dimethylethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[(cyclohexylmethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-(2-propenylamino)propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[(2-fluoroethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[(2-methoxy-1-methylethyl)amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[3-(methylamino)propoxy]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)benzamide, dihydrochloride salt,
5-[[[(1-Aminocyclopropyl)methyl](2-hydroxyethyl)amino]methyl]-2-chloro-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
5-[[(2-Hydroxyethyl)[2-(methylamino)ethyl]amino]methyl]-2-methyl-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)-benzamide,
2-Chloro-5-[3-[[2-(1-methyl-1H-imidazol-4-yl)ethyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)benzamide,
2-Chloro-5-[3-[[2-(1H-imidazol-4-yl)ethyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)benzamide, and
2-Chloro-5-[3-[[3-(1H-imidazol-1-yl)propyl]amino]propyl]-N-(tricyclo[3.3.1.13,7]dec-1-ylmethyl)benzamide.
11. A process for the preparation of a compound of formula (I) as defined in claim 1 which comprises:
(a) when X represents an oxygen or sulphur atom or a group NR13, reacting a compound of general formula
wherein L1 represents a leaving group and D, E, R1, R2 and R4 are as defined in formula (I), with a compound of general formula
wherein X′ represents an oxygen or sulphur atom or a group NR13, and R5 is as defined in formula (I), optionally in the presence of a suitable silver salt; or
(b) when X represents SO or SO2, reacting a corresponding compound of formula (I) in which X represents a sulphur atom with a suitable oxidising agent; or
(c) when X represents a group NR13, reacting a compound of general formula
wherein R20 represents a bond or C1-C5 alkyl group and D, E, R1 and R2 are as defined in formula (I), with a compound of general formula
and optionally after (a), (b) or (c) converting the compound of formula (I) obtained to a pharmaceutically acceptable salt or solvate thereof.
12. A pharmaceutical composition comprising a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, as claimed in claim 1 or claim 10 in association with a pharmaceutically acceptable adjuvant, diluent or carrier.
13. A process for the preparation of a pharmaceutical composition as claimed in claim 12 which comprises mixing a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, as defined in claim 1 or claim 10 with a pharmaceutically acceptable adjuvant, diluent or carrier.
14-19. (canceled)
20. A method of effecting immunosuppression which comprises administering a therapeutically effective amount of a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, as claimed in claim 1 or claim 10 to a patient in need thereof.
21. A method of treating rheumatoid arthritis which comprises administering a therapeutically effective amount of a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, as claimed in claim 1 or claim 10 to a patient in need thereof.
22. A method of treating chronic obstructive pulmonary disease which comprises administering a therapeutically effective amount of a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, as claimed in claim 1 or claim 10 to a patient in need thereof.
Priority Applications (2)
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US11/812,673 US20080139636A1 (en) | 1999-12-17 | 2007-06-20 | Adamantane derivatives |
US12/314,156 US20090176853A1 (en) | 1999-12-17 | 2008-12-04 | Adamantane derivatives |
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SE9904651-8 | 1999-12-17 | ||
SE9904651A SE9904651D0 (en) | 1999-12-17 | 1999-12-17 | Novel compounds |
GB0015744.6 | 2000-06-27 | ||
GB0015744A GB0015744D0 (en) | 2000-06-27 | 2000-06-27 | Novel compounds |
GB0017942.4 | 2000-07-22 | ||
GB0017942A GB0017942D0 (en) | 2000-07-22 | 2000-07-22 | Novel compounds |
PCT/SE2000/002505 WO2001044170A1 (en) | 1999-12-17 | 2000-12-12 | Adamantane derivatives |
US10/149,549 US6881754B2 (en) | 1999-12-17 | 2000-12-12 | Adamantane derivatives |
US10/813,426 US7132457B2 (en) | 1999-12-17 | 2004-03-31 | Adamantane derivatives |
US11/529,746 US7297818B2 (en) | 1999-12-17 | 2006-09-29 | Adamantane derivatives |
US11/812,673 US20080139636A1 (en) | 1999-12-17 | 2007-06-20 | Adamantane derivatives |
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US12/314,156 Continuation US20090176853A1 (en) | 1999-12-17 | 2008-12-04 | Adamantane derivatives |
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US11/529,746 Expired - Fee Related US7297818B2 (en) | 1999-12-17 | 2006-09-29 | Adamantane derivatives |
US11/812,673 Abandoned US20080139636A1 (en) | 1999-12-17 | 2007-06-20 | Adamantane derivatives |
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- 2000-12-12 AU AU22444/01A patent/AU780506B2/en not_active Expired
- 2000-12-12 CO CO00094336A patent/CO5251381A1/en not_active Application Discontinuation
- 2000-12-12 PL PL355913A patent/PL200836B1/en not_active IP Right Cessation
- 2000-12-12 SK SK841-2002A patent/SK286987B6/en not_active IP Right Cessation
- 2000-12-15 MY MYPI20005926A patent/MY125978A/en unknown
- 2000-12-15 AR ARP000106695A patent/AR035325A1/en active IP Right Grant
-
2002
- 2002-05-31 IS IS6406A patent/IS2246B/en unknown
- 2002-06-14 NO NO20022856A patent/NO328682B1/en not_active IP Right Cessation
- 2002-11-11 HK HK03109398A patent/HK1057035A1/en not_active IP Right Cessation
- 2002-11-11 HK HK02108164.1A patent/HK1046678B/en not_active IP Right Cessation
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2004
- 2004-03-31 US US10/813,426 patent/US7132457B2/en not_active Expired - Lifetime
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2005
- 2005-05-27 AU AU2005202321A patent/AU2005202321B2/en not_active Ceased
- 2005-06-03 JP JP2005163710A patent/JP2005320340A/en active Pending
-
2006
- 2006-09-29 US US11/529,746 patent/US7297818B2/en not_active Expired - Fee Related
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2007
- 2007-03-06 CY CY20071100312T patent/CY1106357T1/en unknown
- 2007-05-17 CY CY20071100671T patent/CY1106602T1/en unknown
- 2007-06-20 US US11/812,673 patent/US20080139636A1/en not_active Abandoned
- 2007-12-19 CY CY20071101609T patent/CY1107838T1/en unknown
-
2008
- 2008-02-25 IL IL189758A patent/IL189758A0/en not_active IP Right Cessation
- 2008-12-04 US US12/314,156 patent/US20090176853A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6881754B2 (en) * | 1999-12-17 | 2005-04-19 | Astrazeneca Ab | Adamantane derivatives |
US7132457B2 (en) * | 1999-12-17 | 2006-11-07 | Astrazeneca Ab | Adamantane derivatives |
US7297818B2 (en) * | 1999-12-17 | 2007-11-20 | Astrazeneca Ab | Adamantane derivatives |
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