WO2007104872A1 - Procede de preparation de dérivés [2-(2,3-dihydro-benzofuran- ou benzofuran-7-yloxy)-ethyl]-(3-cyclopenten-1-yl-benzyl)-amines et intermediaire de synthese - Google Patents
Procede de preparation de dérivés [2-(2,3-dihydro-benzofuran- ou benzofuran-7-yloxy)-ethyl]-(3-cyclopenten-1-yl-benzyl)-amines et intermediaire de synthese Download PDFInfo
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- WO2007104872A1 WO2007104872A1 PCT/FR2007/000479 FR2007000479W WO2007104872A1 WO 2007104872 A1 WO2007104872 A1 WO 2007104872A1 FR 2007000479 W FR2007000479 W FR 2007000479W WO 2007104872 A1 WO2007104872 A1 WO 2007104872A1
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- Prior art keywords
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- dioxolane
- benzofuran
- cyclopenten
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- -1 benzofuran-7-yloxy Chemical group 0.000 title claims abstract description 16
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 16
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 title 1
- 150000001875 compounds Chemical class 0.000 claims abstract description 21
- GVNVAWHJIKLAGL-UHFFFAOYSA-N 2-(cyclohexen-1-yl)cyclohexan-1-one Chemical compound O=C1CCCCC1C1=CCCCC1 GVNVAWHJIKLAGL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 101150065749 Churc1 gene Proteins 0.000 claims abstract description 6
- 102100038239 Protein Churchill Human genes 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 3
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 20
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 claims description 17
- MBVFRSJFKMJRHA-UHFFFAOYSA-N 4-fluoro-1-benzofuran-7-carbaldehyde Chemical compound FC1=CC=C(C=O)C2=C1C=CO2 MBVFRSJFKMJRHA-UHFFFAOYSA-N 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 14
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 11
- VYPYKCPWNPPBBX-UHFFFAOYSA-N 2-(3-bromophenyl)-1,3-dioxolane Chemical compound BrC1=CC=CC(C2OCCO2)=C1 VYPYKCPWNPPBBX-UHFFFAOYSA-N 0.000 claims description 9
- HBEDSQVIWPRPAY-UHFFFAOYSA-N 2,3-dihydrobenzofuran Chemical compound C1=CC=C2OCCC2=C1 HBEDSQVIWPRPAY-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000010511 deprotection reaction Methods 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 230000008030 elimination Effects 0.000 claims description 3
- 238000003379 elimination reaction Methods 0.000 claims description 3
- 238000006268 reductive amination reaction Methods 0.000 claims description 3
- 150000003141 primary amines Chemical class 0.000 claims description 2
- QUPDWYMUPZLYJZ-UHFFFAOYSA-N ethyl Chemical class C[CH2] QUPDWYMUPZLYJZ-UHFFFAOYSA-N 0.000 abstract 1
- 150000001299 aldehydes Chemical class 0.000 description 15
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 12
- 239000000543 intermediate Substances 0.000 description 11
- 239000000047 product Substances 0.000 description 9
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000012074 organic phase Substances 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 5
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- ZVCTTWIXJJEXFX-UHFFFAOYSA-N 3-(cyclopenten-1-yl)benzaldehyde Chemical compound O=CC1=CC=CC(C=2CCCC=2)=C1 ZVCTTWIXJJEXFX-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000004587 chromatography analysis Methods 0.000 description 3
- 238000000921 elemental analysis Methods 0.000 description 3
- 239000011541 reaction mixture Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 3
- HBJSIUWQNGVQCT-UHFFFAOYSA-N 2-(1-benzofuran-7-yloxy)-n-[[3-(cyclopenten-1-yl)phenyl]methyl]ethanamine Chemical compound C=1C=CC=2C=COC=2C=1OCCNCC(C=1)=CC=CC=1C1=CCCC1 HBJSIUWQNGVQCT-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- PKDJVVMAGLASAT-UHFFFAOYSA-N CCC1(CC2=C(O1)C(=CC=C2)OCCNCC3=CC(=CC=C3)C4=CCCC4)CC Chemical compound CCC1(CC2=C(O1)C(=CC=C2)OCCNCC3=CC(=CC=C3)C4=CCCC4)CC PKDJVVMAGLASAT-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000002841 Lewis acid Substances 0.000 description 2
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 2
- WGWBVHJBVJVCOU-UHFFFAOYSA-N OC1(CCCC1)c1cc(C2OCCO2)ccc1 Chemical compound OC1(CCCC1)c1cc(C2OCCO2)ccc1 WGWBVHJBVJVCOU-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000000561 anti-psychotic effect Effects 0.000 description 2
- 239000012230 colorless oil Substances 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004128 high performance liquid chromatography Methods 0.000 description 2
- 150000007517 lewis acids Chemical class 0.000 description 2
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 2
- 235000019341 magnesium sulphate Nutrition 0.000 description 2
- XUKRJAQJZUVBSQ-UHFFFAOYSA-N n-[[3-(cyclopenten-1-yl)phenyl]methyl]-2-(2,3-dihydro-1-benzofuran-7-yloxy)ethanamine Chemical compound C=1C=CC=2CCOC=2C=1OCCNCC(C=1)=CC=CC=1C1=CCCC1 XUKRJAQJZUVBSQ-UHFFFAOYSA-N 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 208000024891 symptom Diseases 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 150000003509 tertiary alcohols Chemical class 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- MEKOFIRRDATTAG-UHFFFAOYSA-N 2,2,5,8-tetramethyl-3,4-dihydrochromen-6-ol Chemical compound C1CC(C)(C)OC2=C1C(C)=C(O)C=C2C MEKOFIRRDATTAG-UHFFFAOYSA-N 0.000 description 1
- ZMOJHUFMAVEJKZ-UHFFFAOYSA-N 2-(1-benzofuran-7-yloxy)ethanamine Chemical compound NCCOC1=CC=CC2=C1OC=C2 ZMOJHUFMAVEJKZ-UHFFFAOYSA-N 0.000 description 1
- UQEJGHORZFYREI-UHFFFAOYSA-N 2-(2,3-dihydro-1-benzofuran-7-yloxy)ethanamine Chemical compound NCCOC1=CC=CC2=C1OCC2 UQEJGHORZFYREI-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000007341 Heck reaction Methods 0.000 description 1
- 0 I*(CCOc1cccc2c1OSC2)Cc1cccc(C2=CCCC2)c1 Chemical compound I*(CCOc1cccc2c1OSC2)Cc1cccc(C2=CCCC2)c1 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 208000028017 Psychotic disease Diseases 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000010171 animal model Methods 0.000 description 1
- 208000018300 basal ganglia disease Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000013375 chromatographic separation Methods 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003291 dopaminomimetic effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000003818 flash chromatography Methods 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005580 one pot reaction Methods 0.000 description 1
- 125000001979 organolithium group Chemical group 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005588 protonation Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 239000000018 receptor agonist Substances 0.000 description 1
- 229940044601 receptor agonist Drugs 0.000 description 1
- 239000002464 receptor antagonist Substances 0.000 description 1
- 229940044551 receptor antagonist Drugs 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000002295 serotoninergic effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C47/00—Compounds having —CHO groups
- C07C47/52—Compounds having —CHO groups bound to carbon atoms of six—membered aromatic rings
- C07C47/548—Compounds having —CHO groups bound to carbon atoms of six—membered aromatic rings having unsaturation outside the six-membered aromatic rings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/18—Antipsychotics, i.e. neuroleptics; Drugs for mania or schizophrenia
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/56—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds
- C07C45/57—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom
- C07C45/59—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom in five-membered rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/77—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D307/78—Benzo [b] furans; Hydrogenated benzo [b] furans
- C07D307/86—Benzo [b] furans; Hydrogenated benzo [b] furans with an oxygen atom directly attached in position 7
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/94—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom spiro-condensed with carbocyclic rings or ring systems, e.g. griseofulvins
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
- C07D317/10—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings
- C07D317/14—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D317/18—Radicals substituted by singly bound oxygen or sulfur atoms
- C07D317/20—Free hydroxyl or mercaptan
Definitions
- the present invention relates to a new process for the preparation of [2- (2,3-dihydro-benzofuran or benzofuran-7-yloxy) -ethyl] - (3-cyclopenten-1-yl-benzyl) -amino derivatives of formula (3)
- (a) represents a single or double bond
- W represents a group CH, CH 2 , CHCH 3 , CCH 3 , C (CH 3 ) 2 , a group C (CH 2 ) 2 (ie, a carbon atom carrying two methylene groups linked together so as to form a unit spiro-cyclopropane) with the proviso, however, that when (a) is a double bond then W is exclusively CH or CCH 3 and when (a) is a single bond, then W is exclusively CH 2 , CHCH 3 , C (CH 3 ) 2 or C (CH 2) 2
- the compounds of formula (3) are D 2 dopaminergic receptor antagonists and receptor agonists.
- formula (3) has a low propensity to cause extra-pyramidal disorders.
- the compounds of formula (3) are potentially useful in the treatment of acute and chronic psychotic states in humans. Because of their important therapeutic potential and considerable therapeutic need in this field, a method of synthesis of compounds (3), applicable industrially, is highly desirable.
- the first step involves a coupling reaction, of Heck type, catalyzed by a palladium complex.
- the use of transition metals poses both the problem of their elimination and the measurement of the residual metal contents, both at the level of the active principle (3) and the effluents.
- the coupling is not completely regioselective and a mixture of isomeric cyclopentenic derivatives is obtained.
- the purification of the compound (4) is then carried out by chromatography on silica gel. This purification step becomes difficult to practice when the amounts of product to be purified increase.
- the separation of the cyclopentenic isomers at a later stage for example at the level of the compounds (5), (1) or (3); nor is it easily achievable.
- the controlled oxidation reaction of the alcohol (5) to the aldehyde (1) requires an excess of the oxidizing agent (MnO 2 ) to obtain an acceptable conversion rate.
- the aldehyde (1) formed is strongly adsorbed on the surface of the precipitate, which must be very carefully extracted, preferably under heat, in order to recover (1) with an acceptable yield.
- the present invention relates to a novel process for synthesizing compounds (3).
- the [2- (2,3-dihydro-benzofuran or benzofuran-7-yloxy) -ethyl] - (3-cyclopenten-1-yl-benzyl) -amino derivatives of formula ( 3) are obtained by means of a reductive amination reaction as described in scheme A from intermediates (2) and (1), the aldehyde (1) used being obtained from the intermediate (6). ).
- intermediate 6 is obtained by condensation of an organolithium derived from 2- (3-bromophenyl) -1,3-dioxolane on cyclopentanone.
- the present invention also relates to a novel process for the synthesis of aldehyde (1).
- the novel process for the synthesis of aldehyde (1) uses as sole intermediate the tertiary alcohol of formula (6).
- the aldehyde of formula (1) is prepared in only two steps according to scheme C with an overall yield much higher than that obtained using the initial sequence (see Scheme B).
- An essential aspect of the invention arises from the fact that the new process for the preparation of aldehyde (1) no longer involves the oxidation step, which is recalled as the treatment was particularly problematic.
- a further advantage of the invention is that the synthesis of the compound (1), and thus ultimately the active ingredient (3), is carried out without the intervention of transition metal catalyst.
- the first step consists in condensing the aryllithium intermediate derived from 2- (3-bromophenyl) -1,3-dioxolane [17789-14-9] on cyclopentanone [120-92-3], commercially available.
- the preparation of said aryllithium utilizes a conventional bromine / lithium exchange reaction in organic chemistry (e.g., J. Med Chem 1998, 41, 358).
- a Lewis acid minimizes the formation of the reduction product (7) resulting from the protonation of aryllithium by cyclopentanone.
- Lithium chloride has been found particularly suitable for promoting the desired condensation reaction at the expense of reduction (see Scheme D).
- the proportion of the product (7) is very low ( ⁇ 2%) which makes it possible to avoid the separation of the expected compound (6) from the by-product (7) by chromatography. It is of course advantageous to avoid chromatographic separation, especially on a large scale.
- the second step combines two reactions: deprotection of the aldehyde function and dehydration of the tertiary alcohol. Separately, each of these reactions is well known to those skilled in the art. There are also precedents, on substrates other than (6), in which these reactions occur concomitantly (eg, J. Org Chem 1997, 62, 4183 and Org Lett 2000, 2, 1791). In the case of intermediate (6), the experimental conditions were chosen to perform the double "one-pot" transformation.
- the method for synthesizing compounds of formula (3) thanks to the new method for obtaining aldehyde (1), is more advantageous both economically and environmentally, so more conducive to industrial exploitation.
- Another aspect of the invention relates to the intermediate of formula (6) ie, 2- [3- (1-cyclopentane-1-hydroxy) phenyl] -1,3-dioxolane, - new compound highlighted, synthesized and used as an intermediate in the synthesis of aldehyde (1) and ultimately in the synthesis of active compounds of formula (3).
- the present invention also relates to a process for the synthesis of the intermediate of formula (6) ie, 2- [3- (1-cyclopentane-1-hydroxy) phenyl] -1,3-dioxolane by condensation of a derived aryllithium intermediate 2- (3-bromophenyl) -1,3-dioxolane on cyclopentanone, preferably in the presence of a Lewis acid such as, for example, lithium chloride.
- a Lewis acid such as, for example, lithium chloride.
- N-Butyl lithium (2.5 M in THF, 9.6 mL, 0.024 mol) is slowly added at -78 ° C. to a solution of 2- (3-bromophenyl) -1,3-dioxolane (5 g). 0.022 mol) in dry THF (50 mL) and containing lithium chloride (1.85 gr, 0.043 mol).
- the reaction mixture is stirred for 1 hour 30 minutes at -78 ° C. and then the cyclopentanone (2.9 mL, 0.033 mol) is added dropwise. The temperature is allowed to rise to room temperature for two hours.
- WO 2004/035561 (0.68 g, 3.26 mmol) in 15 ml of 1,2-dichloroethane and the mixture is heated at 60 ° C. for 17 hours. The mixture is cooled to room temperature, the solid is filtered and the solvent is evaporated under reduced pressure. The residue was diluted with 15 'ml of methanol and then cooled to 0 ° C. then introduced 0.35 g of potassium borohydride (6.52 mmol) and the reaction mixture is stirred for three hours at 0 0 C. The mixture was then poured in ice water, extracted with ethyl acetate and washed with saturated aqueous sodium chloride solution.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Psychiatry (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Neurosurgery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Furan Compounds (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/225,048 US20090082582A1 (en) | 2006-03-14 | 2007-03-08 | Process For Preparing [2-(2,3- Dihydrobenzofuran - Or Benzofuran-7-Yloxy)Ethyl]-(3 -Cyclopent-1-Ylbenzyl)Amine Derivatives and Synthesis Intermediate |
EP07731168A EP1996570A1 (fr) | 2006-03-14 | 2007-03-08 | Procede de preparation de dérivés [2-(2,3-dihydro-benzofuran- ou benzofuran-7-yloxy)-ethyl]-(3-cyclopenten-1-yl-benzyl)-amines et intermediaire de synthese |
BRPI0708984-8A BRPI0708984A2 (pt) | 2006-03-14 | 2007-03-08 | processo de preparação de derivados de [2-(2,3-diidro-benzofuran- ou benzofuran-7-ilóxi)-etil]-(3-ciclo-penten-1-il-benzil)-a minas e intermediário de sìntese |
JP2008558854A JP2009530253A (ja) | 2006-03-14 | 2007-03-08 | [2−(2,3−ジヒドロ−ベンゾフラン−またはベンゾフラン−7−イロキシ)−エチル]−(3−シクロペンテン−1−イル−ベンジル)−アミン誘導体の調製方法及び合成中間体 |
AU2007226462A AU2007226462A1 (en) | 2006-03-14 | 2007-03-08 | Process for preparing [2-(2,3-dihydrobenzofuran- or benzofuran-7-yloxy)ethyl]-(3-cyclopent-1-ylbenzyl)amine derivatives and synthesis intermediate |
CA002646346A CA2646346A1 (fr) | 2006-03-14 | 2007-03-08 | Procede de preparation de derives [2-(2,3-dihydro-benzofuran- ou benzofuran-7-yloxy)-ethyl]-(3-cyclopenten-1-yl-benzyl)-amines et intermediaire de synthese |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0602194 | 2006-03-14 | ||
FR0602194A FR2898601A1 (fr) | 2006-03-14 | 2006-03-14 | Procede de preparation de derives (2-(2,3-dihydro-benzofuran ou benzofuran-7-yloxy)-ethyl)-(3-cyclopenten-1-yl-benzyl) amines et intermediaire de synthese |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007104872A1 true WO2007104872A1 (fr) | 2007-09-20 |
Family
ID=37198791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2007/000479 WO2007104872A1 (fr) | 2006-03-14 | 2007-03-08 | Procede de preparation de dérivés [2-(2,3-dihydro-benzofuran- ou benzofuran-7-yloxy)-ethyl]-(3-cyclopenten-1-yl-benzyl)-amines et intermediaire de synthese |
Country Status (10)
Country | Link |
---|---|
US (1) | US20090082582A1 (fr) |
EP (1) | EP1996570A1 (fr) |
JP (1) | JP2009530253A (fr) |
CN (1) | CN101395146A (fr) |
AU (1) | AU2007226462A1 (fr) |
BR (1) | BRPI0708984A2 (fr) |
CA (1) | CA2646346A1 (fr) |
FR (1) | FR2898601A1 (fr) |
WO (1) | WO2007104872A1 (fr) |
ZA (1) | ZA200806371B (fr) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004035561A1 (fr) * | 2002-10-16 | 2004-04-29 | Pierre Fabre Medicament | Derives de 3-(cyclopenten-1-yl)-benzyl- ou 3-(cyclopenten-1-yl)-heteroarylmethyl-amines et leur utilisation a titre de medicaments pour le traitement de la schizophrenie |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2791676B1 (fr) * | 1999-03-29 | 2001-06-22 | Pf Medicament | Nouveaux derives de [(2-substitue-5-[thienyl])-benzyl]- [2-([isopropoxy-5-fluoro]-phenoxy) ethyl]-amine, leur procede de preparation et leur utilisation a titre de medicaments |
-
2006
- 2006-03-14 FR FR0602194A patent/FR2898601A1/fr not_active Withdrawn
-
2007
- 2007-03-08 BR BRPI0708984-8A patent/BRPI0708984A2/pt not_active Application Discontinuation
- 2007-03-08 AU AU2007226462A patent/AU2007226462A1/en not_active Abandoned
- 2007-03-08 JP JP2008558854A patent/JP2009530253A/ja active Pending
- 2007-03-08 WO PCT/FR2007/000479 patent/WO2007104872A1/fr active Application Filing
- 2007-03-08 EP EP07731168A patent/EP1996570A1/fr not_active Withdrawn
- 2007-03-08 US US12/225,048 patent/US20090082582A1/en not_active Abandoned
- 2007-03-08 CN CNA2007800075294A patent/CN101395146A/zh active Pending
- 2007-03-08 CA CA002646346A patent/CA2646346A1/fr not_active Abandoned
-
2008
- 2008-07-22 ZA ZA200806371A patent/ZA200806371B/xx unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004035561A1 (fr) * | 2002-10-16 | 2004-04-29 | Pierre Fabre Medicament | Derives de 3-(cyclopenten-1-yl)-benzyl- ou 3-(cyclopenten-1-yl)-heteroarylmethyl-amines et leur utilisation a titre de medicaments pour le traitement de la schizophrenie |
Non-Patent Citations (1)
Title |
---|
HUERTA F F ET AL: "Naphthalene-catalysed lithiation of 2-(chlorophenyl)- 1,3-dioxolanes: generation of formyl- and acetyl-phenyllithium equivalents", TETRAHEDRON, vol. 55, no. 13, 26 March 1999 (1999-03-26), pages 4043 - 4050, XP004160197 * |
Also Published As
Publication number | Publication date |
---|---|
EP1996570A1 (fr) | 2008-12-03 |
US20090082582A1 (en) | 2009-03-26 |
AU2007226462A1 (en) | 2007-09-20 |
ZA200806371B (en) | 2009-07-29 |
FR2898601A1 (fr) | 2007-09-21 |
CN101395146A (zh) | 2009-03-25 |
JP2009530253A (ja) | 2009-08-27 |
BRPI0708984A2 (pt) | 2011-06-21 |
CA2646346A1 (fr) | 2007-09-20 |
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