EP2663563A1 - Vinyl quinuclidine utile en tant qu'intermédiaire de synthèse dans la préparation de la (r)-méquitazine - Google Patents
Vinyl quinuclidine utile en tant qu'intermédiaire de synthèse dans la préparation de la (r)-méquitazineInfo
- Publication number
- EP2663563A1 EP2663563A1 EP12700225.1A EP12700225A EP2663563A1 EP 2663563 A1 EP2663563 A1 EP 2663563A1 EP 12700225 A EP12700225 A EP 12700225A EP 2663563 A1 EP2663563 A1 EP 2663563A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- formula
- enantiomer
- mequitazine
- quinuclidine
- acid
- 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.)
- Withdrawn
Links
- ZDYYAXZSDKVEIW-UHFFFAOYSA-N 2-ethenyl-1-azabicyclo[2.2.2]octane Chemical compound C1CN2C(C=C)CC1CC2 ZDYYAXZSDKVEIW-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 title abstract description 18
- 238000003786 synthesis reaction Methods 0.000 title abstract description 17
- HOKDBMAJZXIPGC-MRXNPFEDSA-N 10-[[(3r)-1-azabicyclo[2.2.2]octan-3-yl]methyl]phenothiazine Chemical compound C12=CC=CC=C2SC2=CC=CC=C2N1C[C@@H]1C(CC2)CCN2C1 HOKDBMAJZXIPGC-MRXNPFEDSA-N 0.000 title abstract description 5
- HOKDBMAJZXIPGC-UHFFFAOYSA-N Mequitazine Chemical compound C12=CC=CC=C2SC2=CC=CC=C2N1CC1C(CC2)CCN2C1 HOKDBMAJZXIPGC-UHFFFAOYSA-N 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 21
- 229960005042 mequitazine Drugs 0.000 claims description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- 125000004432 carbon atom Chemical group C* 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- 150000003839 salts Chemical class 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 9
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical group CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 claims description 8
- 239000012359 Methanesulfonyl chloride Substances 0.000 claims description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 6
- QARBMVPHQWIHKH-UHFFFAOYSA-N methanesulfonyl chloride Chemical compound CS(Cl)(=O)=O QARBMVPHQWIHKH-UHFFFAOYSA-N 0.000 claims description 6
- 230000002194 synthesizing effect Effects 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- WJFKNYWRSNBZNX-UHFFFAOYSA-N 10H-phenothiazine Chemical compound C1=CC=C2NC3=CC=CC=C3SC2=C1 WJFKNYWRSNBZNX-UHFFFAOYSA-N 0.000 claims description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical group [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims description 4
- 150000004678 hydrides Chemical class 0.000 claims description 4
- 229950000688 phenothiazine Drugs 0.000 claims description 4
- 229910052700 potassium Inorganic materials 0.000 claims description 4
- 239000011591 potassium Substances 0.000 claims description 4
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 3
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- 230000008878 coupling Effects 0.000 claims description 2
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- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000007248 oxidative elimination reaction Methods 0.000 claims description 2
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- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 36
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 22
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- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
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- 239000002585 base Substances 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
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- 239000012280 lithium aluminium hydride Substances 0.000 description 5
- 229960000948 quinine Drugs 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 150000003797 alkaloid derivatives Chemical class 0.000 description 4
- KMPWYEUPVWOPIM-KODHJQJWSA-N cinchonidine Chemical compound C1=CC=C2C([C@H]([C@H]3[N@]4CC[C@H]([C@H](C4)C=C)C3)O)=CC=NC2=C1 KMPWYEUPVWOPIM-KODHJQJWSA-N 0.000 description 4
- KMPWYEUPVWOPIM-UHFFFAOYSA-N cinchonidine Natural products C1=CC=C2C(C(C3N4CCC(C(C4)C=C)C3)O)=CC=NC2=C1 KMPWYEUPVWOPIM-UHFFFAOYSA-N 0.000 description 4
- CTSLXHKWHWQRSH-UHFFFAOYSA-N oxalyl chloride Chemical compound ClC(=O)C(Cl)=O CTSLXHKWHWQRSH-UHFFFAOYSA-N 0.000 description 4
- LOUPRKONTZGTKE-LHHVKLHASA-N quinidine Chemical compound C([C@H]([C@H](C1)C=C)C2)C[N@@]1[C@H]2[C@@H](O)C1=CC=NC2=CC=C(OC)C=C21 LOUPRKONTZGTKE-LHHVKLHASA-N 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 150000001299 aldehydes Chemical class 0.000 description 3
- 239000008346 aqueous phase Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 229940125782 compound 2 Drugs 0.000 description 3
- 239000003480 eluent Substances 0.000 description 3
- 150000002576 ketones Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
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- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
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- 238000007363 ring formation reaction Methods 0.000 description 3
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- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- 238000004809 thin layer chromatography Methods 0.000 description 3
- 125000004191 (C1-C6) alkoxy group Chemical group 0.000 description 2
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 description 2
- GHOKWGTUZJEAQD-ZETCQYMHSA-N (D)-(+)-Pantothenic acid Chemical compound OCC(C)(C)[C@@H](O)C(=O)NCCC(O)=O GHOKWGTUZJEAQD-ZETCQYMHSA-N 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- HBAQYPYDRFILMT-UHFFFAOYSA-N 8-[3-(1-cyclopropylpyrazol-4-yl)-1H-pyrazolo[4,3-d]pyrimidin-5-yl]-3-methyl-3,8-diazabicyclo[3.2.1]octan-2-one Chemical class C1(CC1)N1N=CC(=C1)C1=NNC2=C1N=C(N=C2)N1C2C(N(CC1CC2)C)=O HBAQYPYDRFILMT-UHFFFAOYSA-N 0.000 description 2
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- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
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- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 125000003636 chemical group Chemical group 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004296 chiral HPLC Methods 0.000 description 1
- 229960004106 citric acid Drugs 0.000 description 1
- 238000004440 column chromatography Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- CETRZFQIITUQQL-UHFFFAOYSA-N dmso dimethylsulfoxide Chemical compound CS(C)=O.CS(C)=O CETRZFQIITUQQL-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- CCIVGXIOQKPBKL-UHFFFAOYSA-M ethanesulfonate Chemical compound CCS([O-])(=O)=O CCIVGXIOQKPBKL-UHFFFAOYSA-M 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000174 gluconic acid Substances 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 239000004220 glutamic acid Substances 0.000 description 1
- 235000013922 glutamic acid Nutrition 0.000 description 1
- 229940093915 gynecological organic acid Drugs 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003707 hexyloxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- TYQCGQRIZGCHNB-JLAZNSOCSA-N l-ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(O)=C(O)C1=O TYQCGQRIZGCHNB-JLAZNSOCSA-N 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 229940099690 malic acid Drugs 0.000 description 1
- 229960002510 mandelic acid Drugs 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- XOPUORAQCYGJPT-UHFFFAOYSA-N methanesulfonic acid;hydrochloride Chemical compound Cl.CS(O)(=O)=O XOPUORAQCYGJPT-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000004170 methylsulfonyl group Chemical group [H]C([H])([H])S(*)(=O)=O 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- VWBWQOUWDOULQN-UHFFFAOYSA-N nmp n-methylpyrrolidone Chemical compound CN1CCCC1=O.CN1CCCC1=O VWBWQOUWDOULQN-UHFFFAOYSA-N 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000010534 nucleophilic substitution reaction Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 229940055726 pantothenic acid Drugs 0.000 description 1
- 235000019161 pantothenic acid Nutrition 0.000 description 1
- 239000011713 pantothenic acid Substances 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 125000004115 pentoxy group Chemical group [*]OC([H])([H])C([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 239000008194 pharmaceutical composition Substances 0.000 description 1
- 230000000144 pharmacologic effect Effects 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- SBYHFKPVCBCYGV-UHFFFAOYSA-N quinuclidine Chemical compound C1CC2CCN1CC2 SBYHFKPVCBCYGV-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- WHRNULOCNSKMGB-UHFFFAOYSA-N tetrahydrofuran thf Chemical compound C1CCOC1.C1CCOC1 WHRNULOCNSKMGB-UHFFFAOYSA-N 0.000 description 1
- WROMPOXWARCANT-UHFFFAOYSA-N tfa trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F.OC(=O)C(F)(F)F WROMPOXWARCANT-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 229960000281 trometamol Drugs 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 125000002348 vinylic group Chemical group 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D453/00—Heterocyclic compounds containing quinuclidine or iso-quinuclidine ring systems, e.g. quinine alkaloids
- C07D453/02—Heterocyclic compounds containing quinuclidine or iso-quinuclidine ring systems, e.g. quinine alkaloids containing not further condensed quinuclidine ring systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P11/00—Drugs for disorders of the respiratory system
- A61P11/02—Nasal agents, e.g. decongestants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/08—Antiallergic agents
Definitions
- the present invention relates to the optically pure vinyl quinuclidine of the following formula 2 as a synthetic intermediate in the preparation of the enantiomer (R), dextrorotatory, mequitazine of the following formula:
- Mequitazine 1 is an active ingredient developed pa r Pierre Fa laboratories fiber and commercialized in its racemic version of (mixture of 2 enantiomers Ia and Ib, Scheme 1) as the Primalan ®. This medicine is used as an antihistamine for the treatment of, for example, urticaria, hay fever or certain allergies. Its preparation in its racemic form 1 and in its levorotatory form lb has been described in patents FR 2 522 660 and EP 0 089 860.
- the disadvantage of the synthesis protocol for mequitazine in optically active form (la or lb) is that it involves a step of splitting the racemic, via the formation of a complex with tartaric acid. This splitting involves the loss of at least 50% of product (loss of the undesired enantiomer) and leads to an optically enriched compound.
- the inventors of the present invention have thus developed a novel process for synthesizing mequitazine la using vinyl quinuclidine 2 as a synthesis intermediate thus making it possible to avoid a step of splitting a racemic mixture.
- the present invention thus relates to the enantiomer (R) of the vinyl quinuclidine of formula 2 below:
- This compound 2 will have in particular an enantiomeric excess (ee) greater than 95%, especially greater than 96%, in particular greater than 97%, more particularly greater than 98%, and advantageously greater than 99%.
- ee enantiomeric excess
- enantiomeric excess means the difference between the molar fraction of the major enantiomer (enantiomer (R) in the case of vinyl quinuclidine) and the molar fraction of the minority enantiomer ( enantiomer (S) in the case of vinyl quinuclidine).
- molar fraction is meant, in the sense of the present invention, the ratio between the molar amount of the enantiomer in question and the molar amount of the two enantiomers.
- pharmaceutically acceptable is meant, within the meaning of the present invention all that is useful in the preparation of a pharmaceutical composition, which is generally non-toxic and which is acceptable for veterinary and / or human pharmaceutical use.
- salts for the purposes of the present invention, the term “pharmaceutically acceptable salts” means the salts which are pharmaceutically acceptable, as defined above, and which have the desired pharmacological activity of the parent compound.
- Such salts include:
- acid addition salts formed with inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid, bromic acid, phosphoric acid and the like or formed with organic acids such as ascorbic acid, benzoic acid, aspartic acid, oxalic acid, benzene sulfonic acid, tartaric acid, glutamic acid, lactic acid, maleic acid, succinic acid fumaric acid, citric acid, malic acid, mandelic acid, methanesulfonic acid, pantothenic acid, para-toluenesulfonic acid, acetic acid, gluconic acid, ethanesulfonic acid, propionic acid, salicylic acid, trifluoroacetic acid and the like; advantageously it is trifluoroacetic acid; or
- salts formed when the acidic proton present in the parent compound is either replaced by a metal ion, for example an alkali metal ion, an alkaline earth metal ion or an aluminum ion; or is coordinated with an organic or inorganic base.
- Acceptable organic bases include diethanolamine, ethanolamine, N-methylglucamine, triethanolamine, tromethamine and the like.
- Acceptable inorganic bases include aluminum hydroxide, calcium hydroxide, potassium hydroxide, sodium carbonate and sodium hydroxide.
- the pharmaceutically acceptable salt is an acid addition salt, advantageously formed with trifluoroacetic acid.
- the present invention also provides a process for synthesizing compound 2.
- the approach used is based on the use, as starting material, of a family of molecules extracted from cinchona bark: Cinchona alkaloids. These alkaloids have a structural homology that will be used for the construction of the skeleton of (R) - mequitazine.
- the alkaloids of Cinchona 3 are characterized by a quinuclidine nucleus (homologous to that of mequitazine) substituted by two pendant groups: a "benzyl alcohol” side chain and a vinylic unit, both of defined stereochemistry (Scheme 2) .
- the strategy put in place enhances the stereochemistry of the vinyl motif for the creation of the stereogenic center of the domain (R) of the meq u ita z i n e. It is necessary to break down the side chain of the Cinchona backbone in order to create an optically pure alkaline quinuclidine 2 nucleus which is the key intermediate in the synthesis.
- the vinyl quinuclidine intermediate 2 can then serve as a precursor for the synthesis of mequitazine via an oxidizing coumpre of the double bond, the reduction of the aldehyde obtained u, the activation of the alcohol obtained and the cou lage with phenothiazine.
- Cinchona alkaloids has different members that differ in nature and stereochemistry of the side chain (eg quinine, cinchonidine, quinidine, cinchonine) but whose stereochemistry of the "vinyl" motif is constant.
- the synthesis process developed works indifferently from the different members of the family of Cinchona alkaloids.
- the present invention therefore also relates to a process for synthesizing the enantiomer (R) of vinyl quinuclidine from a Cinchona alkaloid of formula 3 below:
- carbon atom marked by a star is of configuration (R) and R represents a hydrogen atom, a (C 1 -C 6 ) alkoxy group such as methoxy, or an R 4 -OH group in which R 4 represents alkyl, Ci-C 6.
- C 1 -C 6 alkyl group means a saturated linear or branched hydrocarbon-based chain comprising 1 to 6, preferably 1 to 4, carbon atoms. It may be a methyl, ethyl, isopropyl, n-propyl, n-butyl, sec-butyl, isobutyl, ter-butyl, pentyl or hexyl group.
- (C 1 -C 6 ) alkoxy means a linear or branched saturated hydrocarbon-based chain comprising 1 to 6, preferably 1 to 4, carbon atoms, linked to the remainder of the molecule through an oxygen atom. It may be a methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, sec-butoxy, isobutoxy, ter-butoxy, pentoxy or hexoxy group. This will be in particular a methoxy or ieri-butoxy group.
- Cinchona alkaloid of formula 3 may be chosen more particularly from quinine, cinchonidine, quinidine and cinchonine, and in particular will be quinine.
- the process for synthesizing the enantiomer (R) of vinyl quinuclidine will more particularly comprise the following successive steps:
- RI represents a (C 1 -C 6 ) alkyl group such as tert-butyl
- the stage (i) can be carried out especially in the presence of imethylsulfoxide.
- the reaction will be carried out especially at a temperature between -60 and -80 ° C, especially at about -78 ° C.
- the dichloromethane may be used as a solvent.
- Step (ii) may be carried out in the presence of oxygen (the oxygen being in particular bubbled in the reaction medium) and a base of formula R 1 -CO-M such that f-BuOK, R 1 being as defined above and especially representing an iron-b utyl group and M representing an alkali metal such as sodium or potassium, and in particular potassium.
- the reaction may be carried out in the presence of the alcohol of formula R 1 -OH corresponding to the base, such as ieri-butanol. Tetrahydrofuran may be used as a solvent.
- Step (iii) may be carried out in the presence of a hydride such as lithium aluminum hydride (LAH). Tetrahydrofuran may be used as a solvent.
- LAH lithium aluminum hydride
- the cyclization step (iv) will comprise in particular the following two successive steps: (iv-1) activation of the OH function of the alcohol of formula 6 as defined above to give the compound of formula 7 below:
- u-star-labeled carbon atom is of (R) configuration and R2 is a leaving group such as a chlorine atom
- leaving group is meant, in the sense of the present invention, a chemical group that can be easily moved by a nucleophile during a nucleophilic substitution reaction, the nucleophile being more particularly an amine, and in particular a secondary amine.
- a leaving group may be more particularly a halogen atom such as a chlorine atom, a mesylate (CH 3 -S (O 2 ) O-), triflate (CF 3 -S (O) 2 O-) or another tosylate (p-Me-C 6 H 4 -S (O) 2 O-).
- the dichloromethane may be used as a solvent.
- Step (iv-2) may be carried out in the presence of K 2 CO 3 as a base.
- Acetonitrile may be used as a solvent.
- a catalytic amount of sodium iodide may also be added.
- the compound 2 thus obtained can be separated from the reaction medium by methods well known to those skilled in the art, for example by extraction, evaporation of the solvent or again by precipitation and filtration. It may also be purified if necessary by techniques well known to those skilled in the art, such as by recrystallization, distillation, column chromatography on silica gel or by high performance liquid chromatography (HPLC).
- HPLC high performance liquid chromatography
- the present invention thus provides for the use of the enantiomer (R) of vinyl quinuclidine 2 as a synthetic intermediate in the preparation of the enantiomer (R) of mequitazine.
- the present invention therefore also relates to a process for synthesizing the enantiomer (R) of mequitazine from the enantiomer (R) of vinyl quinuclidine 2.
- This process may more particularly include the following successive steps:
- R3 represents a leaving group such as a mesylate (Oms or CH 3 -S (O 2 ) O-), and
- step (d) coupling the compound of formula 10 obtained in step (c) above with phenothiazine to give the enantiomer (R) of mequitazine.
- Step (a) may be performed by ozonolysis, that is to say in the presence of 0 3 , the methanol may be used as a solvent.
- This reaction may be carried out starting from an acid addition salt of the enantiomer (R) of vinyl quinuclidine of formula 2 as defined above, the acid may be more particularly trifluoroacetic acid. .
- Step (b) may be carried out in the presence of a hydride such as NaBH 4 .
- MsCl methanesulfonyl chloride
- a base such as pyridine
- Chloroform may be used as a solvent.
- Step (d) is carried out in the presence of a base such as potassium ferf-butoxylate.
- a base such as potassium ferf-butoxylate.
- Tetrahydrofuran may be used as a solvent.
- the mequitazine thus obtained may have an enantiomeric excess (ee) greater than 95%, especially greater than 96%, in particular greater than 97%, more particularly greater than 98%, and advantageously greater than 99%.
- quinine 3i has been converted to vinyl quinuclidine 2 according to the reaction scheme below (Scheme 3).
- anhydrous DMSO (1.6 mL, 22.5 mmol, 5.2 eq) is added dropwise into a solution of oxalyl chloride (770 ⁇ l, 9.1 mmol, 2.1 eq) in 20 mL of anhydrous CH 2 Cl 2 at -78 ° C under a nitrogen atmosphere.
- the medium is left stirring for 20 minutes at this temperature and then a solution of quinine 3i (1.4 g, 4.32 mmol, 1 eq) in 20 ml of CH 2 Cl 2 is added dropwise to the medium on a period of 15 minutes.
- anhydrous triethylamine (5.35 mL, 38.4 mmol, 8.9 eq) is added dropwise, the medium is left for 15 minutes at -78 ° C. C then 1 h at room temperature.
- the reaction is stopped by adding 25 ml of a saturated solution of NaCl and 10 ml of water.
- the medium is extracted with 3 ⁇ 25 ml of CH 2 Cl 2 .
- the combined organic phases are dried over Na 2 SO 4 , filtered and then evaporated under vacuum.
- the crude is purified by chromatography on silica gel (eluent: CH 2 Cl 2 / MeOH / H 4 OH 95 / 4.5 / 0.5) to give a quininone fraction 4i which solidifies with difficulty.
- the fraction is taken up in a few ml of water to precipitate the quininone which is filtered and then dried overnight under vacuum on P 2 0 5 to give 1.25 g (90%) of 4i in the form of a yellow solid. clear.
- anhydrous f-BuOH (0.4 mL) is added to a freshly sublimed f-BuOK solution (174 mg, 1.55 mmol, 2.5 eq) in 1 mL of THF anhydrous.
- the solution is saturated by bubbling with oxygen for 10 minutes at 0 ° C. and then left under an atmosphere of 0 2 .
- a solution of 4i (200 mg, 0.62 mmol, 1 eq) in 1 mL of anhydrous THF is added dropwise. The medium turns to dark orange. After 30 minutes at 0 ° C, TLC shows that quininone 4i has been fully consumed, the medium has turned yellow.
- LiAIH LAH
- 5 i 50 mg, 0.22 mmol, 1 eq
- 5 i 50 mg, 0.22 mmol, 1 eq
- THF 1 mL of anhydrous THF
- 1.5 ml of 1M sodium hydroxide and 2 ml of water are added successively in the medium which is stirred for 20 minutes.
- the alumina formed is filtered on celite which is rinsed abundantly with THF and then with THF / MeOH 3: 1.
- the filtrate is evaporated under concentrated vacuum to yield 30.8 mg (90%) of 6 as a yellow oil which is directly engaged in the next step.
- thionyl chloride (94 ⁇ l, 1.28 mmol, 2 eq) is added dropwise to a solution of 6 (100 mg, 0.64 mmol, 1 eq) in 5 mL of anhydrous CH 2 Cl 2 under a nitrogen atmosphere and at 0 ° C.
- the medium is then refluxed for 2 hours.
- the medium is cooled to 0 ° C., neutralized with 6 ml of a saturated aqueous solution of K 2 CO 3 and then extracted with 4 ⁇ 10 ml of CH 2 Cl 2 .
- the combined organic phases are dried over Na 2 SO 4 , filtered and then evaporated under vacuum to yield 7i in the form of a brown oil which is directly engaged in the next step.
- Vinyl quinuclidine 2 has been used for the synthesis of mequitazine of stereochemistry (RJ, dextrogy
- TFA (30 ⁇ l, 0.38 mmol, 1.1 eq) is added to a solution of vinyl quinuclidine 2 (48 mg, 0.35 mmol, 1 eq) in THF (1 mL). ). The medium is left stirring for 10 minutes, then the THF is evaporated under vacuum. The vinyl quinuclidine salt is taken up in 2 mL of MeOH and the temperature of the medium is raised to -78 ° C. Ozone is bubbled into the solution until saturation (appearance of a violet color after 5 min). The excess of ozone is then removed by bubbling nitrogen in the medium for 10 minutes.
- Solid NaBH 4 (106 mg, 2.8 mmol, 8 eq) is then introduced in one time at a time when the mixture is gradually brought to room temperature. After 16 h, the reaction is stopped by adding 4 mL of a saturated aqueous solution of K 2 CO 3 . The aqueous phase is extracted with 4 ⁇ 5 mL of ethyl acetate. The combined organic phases are dried over Na 2 SO 4 , filtered, and then evaporated under vacuum. The crude reaction product (31 mg, 63%) is directly engaged in the next step (yellow oil).
- the aqueous phase is then washed with Et 2 and concentrated.
- the solid is taken up in 1.5 mL H 2 O / Et 2 O (1 / 0.5) in an ice bath.
- the precipitate was filtered, rinsed with Et 2 0 and taken up in 4 mL of saturated K 2 C0 3.
- the aqueous phase is extracted with 3 x 3 mL of CHCl 3 .
- the organic phases are dried over Na 2 SO 4 , filtered or concentrated in vacuo. Mequitazine la (9.1 mg, 72%) is obtained as a white solid.
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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Pulmonology (AREA)
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- Otolaryngology (AREA)
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- Nitrogen Condensed Heterocyclic Rings (AREA)
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Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1150186A FR2970255B1 (fr) | 2011-01-10 | 2011-01-10 | Vinyl quinuclidine utile en tant qu'intermediaire de synthese dans la preparation de la (r)-mequitazine. |
| PCT/EP2012/050305 WO2012095418A1 (fr) | 2011-01-10 | 2012-01-10 | Vinyl quinuclidine utile en tant qu'intermédiaire de synthèse dans la préparation de la (r)-méquitazine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2663563A1 true EP2663563A1 (fr) | 2013-11-20 |
Family
ID=44146486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12700225.1A Withdrawn EP2663563A1 (fr) | 2011-01-10 | 2012-01-10 | Vinyl quinuclidine utile en tant qu'intermédiaire de synthèse dans la préparation de la (r)-méquitazine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8754074B2 (fr) |
| EP (1) | EP2663563A1 (fr) |
| JP (1) | JP2014506256A (fr) |
| FR (1) | FR2970255B1 (fr) |
| WO (1) | WO2012095418A1 (fr) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2522660A1 (fr) | 1982-03-05 | 1983-09-09 | Pharmuka Lab | Isomere levogyre de la mequitazine, son procede de preparation et medicaments le contenant |
| IT1251161B (it) * | 1991-08-07 | 1995-05-04 | Derivati ammonio quaternari di (-) e (+)-3-(10 h-fenotiazin-10-ilmetil)-l-azabiciclo (2.2.2.)ottano e composizioni farmaceutiche che li contengono |
-
2011
- 2011-01-10 FR FR1150186A patent/FR2970255B1/fr not_active Expired - Fee Related
-
2012
- 2012-01-10 WO PCT/EP2012/050305 patent/WO2012095418A1/fr not_active Ceased
- 2012-01-10 US US13/822,649 patent/US8754074B2/en not_active Expired - Fee Related
- 2012-01-10 EP EP12700225.1A patent/EP2663563A1/fr not_active Withdrawn
- 2012-01-10 JP JP2013547880A patent/JP2014506256A/ja not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2012095418A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US8754074B2 (en) | 2014-06-17 |
| US20130296553A1 (en) | 2013-11-07 |
| WO2012095418A1 (fr) | 2012-07-19 |
| FR2970255A1 (fr) | 2012-07-13 |
| FR2970255B1 (fr) | 2013-09-06 |
| JP2014506256A (ja) | 2014-03-13 |
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