WO2005073235A2 - Process for the synthesis of n- [3-(3-cyanopyrazolo [1,5a] pyrimidin-7-yl)-phenyl]-n-ethyl-acetamide - Google Patents
Process for the synthesis of n- [3-(3-cyanopyrazolo [1,5a] pyrimidin-7-yl)-phenyl]-n-ethyl-acetamide Download PDFInfo
- Publication number
- WO2005073235A2 WO2005073235A2 PCT/HU2005/000008 HU2005000008W WO2005073235A2 WO 2005073235 A2 WO2005073235 A2 WO 2005073235A2 HU 2005000008 W HU2005000008 W HU 2005000008W WO 2005073235 A2 WO2005073235 A2 WO 2005073235A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- formula
- ethyl
- phenyl
- compound
- acetamide
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 49
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 40
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 38
- HUNXMJYCHXQEGX-UHFFFAOYSA-N zaleplon Chemical compound CCN(C(C)=O)C1=CC=CC(C=2N3N=CC(=C3N=CC=2)C#N)=C1 HUNXMJYCHXQEGX-UHFFFAOYSA-N 0.000 title abstract description 5
- 150000001875 compounds Chemical class 0.000 claims abstract description 67
- 239000012535 impurity Substances 0.000 claims abstract description 29
- FZSDJRKAWHMQFF-UHFFFAOYSA-N n-[3-[3-(dimethylamino)prop-2-enoyl]phenyl]-n-ethylacetamide;hydrochloride Chemical compound Cl.CCN(C(C)=O)C1=CC=CC(C(=O)C=CN(C)C)=C1 FZSDJRKAWHMQFF-UHFFFAOYSA-N 0.000 claims abstract description 11
- FFNKBQRKZRMYCL-UHFFFAOYSA-N 5-amino-1h-pyrazole-4-carbonitrile Chemical compound NC1=NNC=C1C#N FFNKBQRKZRMYCL-UHFFFAOYSA-N 0.000 claims abstract description 9
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 claims abstract description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 21
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 14
- 239000011541 reaction mixture Substances 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000003960 organic solvent Substances 0.000 claims description 7
- 239000000725 suspension Substances 0.000 claims description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 4
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 4
- UXWJJVRASIHSQS-UHFFFAOYSA-N n-[3-[3-(dimethylamino)prop-2-enoyl]phenyl]-n-ethylacetamide Chemical compound CCN(C(C)=O)C1=CC=CC(C(=O)C=CN(C)C)=C1 UXWJJVRASIHSQS-UHFFFAOYSA-N 0.000 claims description 3
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 claims 2
- 239000002253 acid Substances 0.000 abstract description 15
- PMDCZENCAXMSOU-UHFFFAOYSA-N N-Ethylacetamide Natural products CCNC(C)=O PMDCZENCAXMSOU-UHFFFAOYSA-N 0.000 abstract description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 abstract description 3
- 230000001225 therapeutic effect Effects 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 19
- 239000012467 final product Substances 0.000 description 16
- QCQCHGYLTSGIGX-GHXANHINSA-N 4-[[(3ar,5ar,5br,7ar,9s,11ar,11br,13as)-5a,5b,8,8,11a-pentamethyl-3a-[(5-methylpyridine-3-carbonyl)amino]-2-oxo-1-propan-2-yl-4,5,6,7,7a,9,10,11,11b,12,13,13a-dodecahydro-3h-cyclopenta[a]chrysen-9-yl]oxy]-2,2-dimethyl-4-oxobutanoic acid Chemical compound N([C@@]12CC[C@@]3(C)[C@]4(C)CC[C@H]5C(C)(C)[C@@H](OC(=O)CC(C)(C)C(O)=O)CC[C@]5(C)[C@H]4CC[C@@H]3C1=C(C(C2)=O)C(C)C)C(=O)C1=CN=CC(C)=C1 QCQCHGYLTSGIGX-GHXANHINSA-N 0.000 description 14
- 238000004128 high performance liquid chromatography Methods 0.000 description 12
- 238000001228 spectrum Methods 0.000 description 12
- 150000003839 salts Chemical class 0.000 description 11
- 239000000126 substance Substances 0.000 description 11
- 150000002500 ions Chemical class 0.000 description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Substances CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- 238000010828 elution Methods 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 239000002904 solvent Substances 0.000 description 8
- YMWUJEATGCHHMB-UHFFFAOYSA-N dichloromethane Natural products ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 7
- 239000007858 starting material Substances 0.000 description 7
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- 230000002378 acidificating effect Effects 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 238000002329 infrared spectrum Methods 0.000 description 5
- 239000000543 intermediate Substances 0.000 description 5
- 230000035484 reaction time Effects 0.000 description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000003480 eluent Substances 0.000 description 4
- JUJWROOIHBZHMG-QYKNYGDISA-N 2-deuteriopyridine Chemical compound [2H]C1=CC=CC=N1 JUJWROOIHBZHMG-QYKNYGDISA-N 0.000 description 3
- 229960000583 acetic acid Drugs 0.000 description 3
- 238000001460 carbon-13 nuclear magnetic resonance spectrum Methods 0.000 description 3
- 238000012512 characterization method Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000004992 fast atom bombardment mass spectroscopy Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000000425 proton nuclear magnetic resonance spectrum Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- CZDYPVPMEAXLPK-UHFFFAOYSA-N tetramethylsilane Chemical compound C[Si](C)(C)C CZDYPVPMEAXLPK-UHFFFAOYSA-N 0.000 description 3
- 238000005160 1H NMR spectroscopy Methods 0.000 description 2
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 2
- 239000005695 Ammonium acetate Substances 0.000 description 2
- -1 aliphatic alcohols Chemical class 0.000 description 2
- 229940043376 ammonium acetate Drugs 0.000 description 2
- 235000019257 ammonium acetate Nutrition 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000003776 cleavage reaction Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 125000004528 pyrimidin-5-yl group Chemical group N1=CN=CC(=C1)* 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000007017 scission Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 1
- CWNPOQFCIIFQDM-UHFFFAOYSA-N 3-nitrobenzyl alcohol Chemical compound OCC1=CC=CC([N+]([O-])=O)=C1 CWNPOQFCIIFQDM-UHFFFAOYSA-N 0.000 description 1
- 238000005361 D2 NMR spectroscopy Methods 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 230000003556 anti-epileptic effect Effects 0.000 description 1
- 239000001961 anticonvulsive agent Substances 0.000 description 1
- 239000002249 anxiolytic agent Substances 0.000 description 1
- 230000000949 anxiolytic effect Effects 0.000 description 1
- 229910001417 caesium ion Inorganic materials 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000007905 drug manufacturing Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010812 external standard method Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 230000000147 hypnotic effect Effects 0.000 description 1
- 229940030980 inova Drugs 0.000 description 1
- 238000000752 ionisation method Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- CCGKOQOJPYTBIH-UHFFFAOYSA-N ketene group Chemical group C=C=O CCGKOQOJPYTBIH-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 238000007040 multi-step synthesis reaction Methods 0.000 description 1
- 239000003158 myorelaxant agent Substances 0.000 description 1
- NINOYJQVULROET-UHFFFAOYSA-N n,n-dimethylethenamine Chemical group CN(C)C=C NINOYJQVULROET-UHFFFAOYSA-N 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000002953 preparative HPLC Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000000018 receptor agonist Substances 0.000 description 1
- 229940044601 receptor agonist Drugs 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 239000000932 sedative agent Substances 0.000 description 1
- 230000001624 sedative effect Effects 0.000 description 1
- 210000002027 skeletal muscle Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000004885 tandem mass spectrometry Methods 0.000 description 1
- 229960004010 zaleplon Drugs 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
- C07D487/04—Ortho-condensed systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P21/00—Drugs for disorders of the muscular or neuromuscular system
- A61P21/02—Muscle relaxants, e.g. for tetanus or cramps
-
- 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
- A61P25/08—Antiepileptics; Anticonvulsants
-
- 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
- A61P25/20—Hypnotics; Sedatives
-
- 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
- A61P25/22—Anxiolytics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C233/00—Carboxylic acid amides
- C07C233/01—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
- C07C233/34—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by amino groups
- C07C233/42—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by amino groups with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by a carbon atom of a six-membered aromatic ring
- C07C233/43—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by amino groups with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by a carbon atom of a six-membered aromatic ring having the carbon atom of the carboxamide group bound to a hydrogen atom or to a carbon atom of a saturated carbon skeleton
Definitions
- the impurity of formula (V) was isolated from the mother liquor of the recrystallization by preparative HPLC. Surprisingly it was found that the impurity of formula (V) is formed only in 0.07 % yield in the process of our invention for the synthesis of compound of formula (IV). We realized that the formation of the impurity of formula (V) can be diminished by addition of the hydrochloride salt of formula (II) in small portions to the reaction mixture during the process of our invention for the synthesis of compound of formula (IV), as well as by keeping the appropriate pH value, temperature, ratio of solvent and reaction time. This is especially advantageous in the pharmaceutical industry.
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Veterinary Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pharmacology & Pharmacy (AREA)
- Engineering & Computer Science (AREA)
- Neurology (AREA)
- Biomedical Technology (AREA)
- Neurosurgery (AREA)
- Pain & Pain Management (AREA)
- Physical Education & Sports Medicine (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Anesthesiology (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EA200601417A EA010830B1 (en) | 2004-02-02 | 2005-01-31 | Process for the synthesis of n- [3-(3-cyanopyrazolo [1,5a] pyrimidin-7-yl)-phenyl]-n-ethyl-acetamide |
RSP-2006/0427A RS20060427A (en) | 2004-02-02 | 2005-01-31 | PROCESS FOR THE SYNTHESIS OF N-/3-(CYANOPYRAZOLO/1,5a/PYRIMIDIN-7YL)-PHENYL/-N-ETHYL-ACETAMIDE |
DE602005012365T DE602005012365D1 (en) | 2004-02-02 | 2005-01-31 | PROCESS FOR SYNTHESIS OF N-Ä3- (3-CYANOPYRAZOLOÄ1,5AÜPYRIMIDIN-7-YL) -PHENYLÜ-N-ETHYLACETAMIDE |
EP05708499A EP1711501B1 (en) | 2004-02-02 | 2005-01-31 | Process for the synthesis of n- [3-(3-cyanopyrazolo [1,5a] pyrimidin-7-yl)-phenyl] -n-ethyl-acetamide |
JP2006550312A JP2007519700A (en) | 2004-02-02 | 2005-01-31 | Method for the synthesis of N- [3- (3-cyanopyrazolo [1,5-a] pyrimidin-7-yl) -phenyl] -N-ethyl-acetamide |
NO20063917A NO20063917L (en) | 2004-02-02 | 2006-09-01 | Process for the synthesis of N- [3- (3-cyanopyrazole [1,5A] pyrimidin-7-yl) -phenyl] -N-ethyl-acetamide |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU0400325A HUP0400325A3 (en) | 2004-02-02 | 2004-02-02 | Pure n-[3-(-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]-n-ethyl-acetamide, process for its preparation and intermediates |
HUPO400325 | 2004-02-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005073235A2 true WO2005073235A2 (en) | 2005-08-11 |
WO2005073235A3 WO2005073235A3 (en) | 2005-10-06 |
Family
ID=89981959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/HU2005/000008 WO2005073235A2 (en) | 2004-02-02 | 2005-01-31 | Process for the synthesis of n- [3-(3-cyanopyrazolo [1,5a] pyrimidin-7-yl)-phenyl]-n-ethyl-acetamide |
Country Status (9)
Country | Link |
---|---|
EP (2) | EP1950213B1 (en) |
JP (1) | JP2007519700A (en) |
AT (2) | ATE420882T1 (en) |
DE (2) | DE602005012365D1 (en) |
EA (1) | EA010830B1 (en) |
HU (1) | HUP0400325A3 (en) |
NO (1) | NO20063917L (en) |
RS (1) | RS20060427A (en) |
WO (1) | WO2005073235A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005099712A2 (en) * | 2004-04-19 | 2005-10-27 | Sanmar Speciality Chemicals Limited | Process for preparation of n-[3-(3-cyanopyrazolo [1,5-a]pyrimidin-7-yl)phenyl]-n-ethylacetamide |
WO2006070244A2 (en) * | 2004-11-22 | 2006-07-06 | Bakulesh Mafatlal Khamar | A process for the preparation of zaleplon |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0776898A1 (en) * | 1995-12-01 | 1997-06-04 | American Cyanamid Company | Process improvement in the synthesis of N-[3-(3-cyanopyrazolo [1,5-a]pyrimidin-7-yl)phenyl]-N-ethyl-acetamide |
WO2002100828A2 (en) * | 2001-06-12 | 2002-12-19 | Biogal Gyogyszergyar Rt | Process for the production of zaleplon |
WO2003095456A1 (en) * | 2002-05-14 | 2003-11-20 | Adamed Sp Z O.O. | A process for the preparation of zaleplon |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4626538A (en) | 1983-06-23 | 1986-12-02 | American Cyanamid Company | [7-(3-disubstituted amino)phenyl]pyrazolo[1,5-a]pyrimidines |
US6852858B2 (en) * | 2001-08-01 | 2005-02-08 | Biogal Gyogyszergyar Rt. | Process for purifying N-[3-(3-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]-N-ethylacetamide (zaleplon) and crystalline forms of zaleplon accessible with the process |
-
2004
- 2004-02-02 HU HU0400325A patent/HUP0400325A3/en unknown
-
2005
- 2005-01-31 AT AT05708499T patent/ATE420882T1/en not_active IP Right Cessation
- 2005-01-31 EP EP08008434A patent/EP1950213B1/en active Active
- 2005-01-31 RS RSP-2006/0427A patent/RS20060427A/en unknown
- 2005-01-31 JP JP2006550312A patent/JP2007519700A/en active Pending
- 2005-01-31 DE DE602005012365T patent/DE602005012365D1/en not_active Expired - Fee Related
- 2005-01-31 EA EA200601417A patent/EA010830B1/en not_active IP Right Cessation
- 2005-01-31 EP EP05708499A patent/EP1711501B1/en active Active
- 2005-01-31 AT AT08008434T patent/ATE438647T1/en not_active IP Right Cessation
- 2005-01-31 WO PCT/HU2005/000008 patent/WO2005073235A2/en active Application Filing
- 2005-01-31 DE DE602005015902T patent/DE602005015902D1/en not_active Expired - Fee Related
-
2006
- 2006-09-01 NO NO20063917A patent/NO20063917L/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0776898A1 (en) * | 1995-12-01 | 1997-06-04 | American Cyanamid Company | Process improvement in the synthesis of N-[3-(3-cyanopyrazolo [1,5-a]pyrimidin-7-yl)phenyl]-N-ethyl-acetamide |
WO2002100828A2 (en) * | 2001-06-12 | 2002-12-19 | Biogal Gyogyszergyar Rt | Process for the production of zaleplon |
WO2003095456A1 (en) * | 2002-05-14 | 2003-11-20 | Adamed Sp Z O.O. | A process for the preparation of zaleplon |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005099712A2 (en) * | 2004-04-19 | 2005-10-27 | Sanmar Speciality Chemicals Limited | Process for preparation of n-[3-(3-cyanopyrazolo [1,5-a]pyrimidin-7-yl)phenyl]-n-ethylacetamide |
WO2005099712A3 (en) * | 2004-04-19 | 2006-12-21 | Sanmar Speciality Chemicals Lt | Process for preparation of n-[3-(3-cyanopyrazolo [1,5-a]pyrimidin-7-yl)phenyl]-n-ethylacetamide |
WO2006070244A2 (en) * | 2004-11-22 | 2006-07-06 | Bakulesh Mafatlal Khamar | A process for the preparation of zaleplon |
WO2006070244A3 (en) * | 2004-11-22 | 2007-03-22 | Bakulesh Mafatlal Khamar | A process for the preparation of zaleplon |
Also Published As
Publication number | Publication date |
---|---|
HU0400325D0 (en) | 2004-04-28 |
EP1950213A3 (en) | 2008-08-13 |
EP1711501A2 (en) | 2006-10-18 |
EA010830B1 (en) | 2008-12-30 |
HUP0400325A2 (en) | 2005-09-28 |
EP1950213B1 (en) | 2009-08-05 |
ATE438647T1 (en) | 2009-08-15 |
EP1950213A2 (en) | 2008-07-30 |
JP2007519700A (en) | 2007-07-19 |
EA200601417A1 (en) | 2006-12-29 |
DE602005012365D1 (en) | 2009-03-05 |
ATE420882T1 (en) | 2009-01-15 |
DE602005015902D1 (en) | 2009-09-17 |
HUP0400325A3 (en) | 2005-11-28 |
EP1711501B1 (en) | 2009-01-14 |
NO20063917L (en) | 2006-11-01 |
WO2005073235A3 (en) | 2005-10-06 |
RS20060427A (en) | 2008-08-07 |
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