ECSP12011920A - Procedimiento para la preparación de {4,6-diamino-2-[1-(2-fluorobencil)-1h-pirazolo[3,4-b]piridin-3-il]pirimidin-5-il}carbamato de metilo y su purificación para el uso como principio activo farmacéutico - Google Patents

Procedimiento para la preparación de {4,6-diamino-2-[1-(2-fluorobencil)-1h-pirazolo[3,4-b]piridin-3-il]pirimidin-5-il}carbamato de metilo y su purificación para el uso como principio activo farmacéutico

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Publication number
ECSP12011920A
ECSP12011920A ECSP12011920A ECSP12011920A EC SP12011920 A ECSP12011920 A EC SP12011920A EC SP12011920 A ECSP12011920 A EC SP12011920A EC SP12011920 A ECSP12011920 A EC SP12011920A
Authority
EC
Ecuador
Prior art keywords
purification
diamino
preparation
procedure
mettilo
Prior art date
Application number
Other languages
English (en)
Inventor
Joachim Rehse
Franz-Josef Mais
Winfried Joentgen
Konrad Siegel
Original Assignee
Bayer Ip Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer Ip Gmbh filed Critical Bayer Ip Gmbh
Publication of ECSP12011920A publication Critical patent/ECSP12011920A/es

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
    • C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
    • C07D471/04—Ortho-condensed systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/4353—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems
    • A61K31/437—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems the heterocyclic ring system containing a five-membered ring having nitrogen as a ring hetero atom, e.g. indolizine, beta-carboline
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
    • A61P1/04—Drugs for disorders of the alimentary tract or the digestive system for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
    • 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
    • A61P11/06—Antiasthmatics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P13/00—Drugs for disorders of the urinary system
    • A61P13/02—Drugs for disorders of the urinary system of urine or of the urinary tract, e.g. urine acidifiers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P13/00—Drugs for disorders of the urinary system
    • A61P13/08—Drugs for disorders of the urinary system of the prostate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P15/00—Drugs for genital or sexual disorders; Contraceptives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P15/00—Drugs for genital or sexual disorders; Contraceptives
    • A61P15/10—Drugs for genital or sexual disorders; Contraceptives for impotence
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P19/00—Drugs for skeletal disorders
    • A61P19/02—Drugs for skeletal disorders for joint disorders, e.g. arthritis, arthrosis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P19/00—Drugs for skeletal disorders
    • A61P19/08—Drugs for skeletal disorders for bone diseases, e.g. rachitism, Paget's disease
    • A61P19/10—Drugs for skeletal disorders for bone diseases, e.g. rachitism, Paget's disease for osteoporosis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P27/00—Drugs for disorders of the senses
    • A61P27/02—Ophthalmic agents
    • A61P27/06—Antiglaucoma agents or miotics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P7/00—Drugs for disorders of the blood or the extracellular fluid
    • A61P7/02—Antithrombotic agents; Anticoagulants; Platelet aggregation inhibitors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • A61P9/04—Inotropic agents, i.e. stimulants of cardiac contraction; Drugs for heart failure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • A61P9/06—Antiarrhythmics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • A61P9/12—Antihypertensives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • A61P9/14—Vasoprotectives; Antihaemorrhoidals; Drugs for varicose therapy; Capillary stabilisers
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
    • C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
    • C07D403/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings directly linked by a ring-member-to-ring-member bond

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Medicinal Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cardiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Urology & Nephrology (AREA)
  • Rheumatology (AREA)
  • Endocrinology (AREA)
  • Pulmonology (AREA)
  • Reproductive Health (AREA)
  • Ophthalmology & Optometry (AREA)
  • Vascular Medicine (AREA)
  • Gynecology & Obstetrics (AREA)
  • Hospice & Palliative Care (AREA)
  • Immunology (AREA)
  • Hematology (AREA)
  • Diabetes (AREA)
  • Epidemiology (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

La presente invención se refiere a un procedimiento para la preparación de {4,6-diamino-2-[1-(2-fluorobencil)-1H-pirazolo[3,4-b]piridin-3-il]pirimidin-5-il}carbamato de metilo, es decir del compuesto de fórmula (I) así como a un procedimiento para la purificación del producto bruto de fórmula (I) para el uso como sustancia farmacéuticamente activa. Aislándose para la purificación se genera {4,6-diamino-2-[1-(2-fluorobencil)-1H-pirazolo[3,4-b]piridin-3-il]pirimidin-5-il}carbamato de metilo - sulfinildimetano (1:2) de fórmula (II) como sustancia intermedia o se genera como sustancia intermedia en este procedimiento de purificación presentándose dado el caso en una mezcla.
ECSP12011920 2009-11-27 2012-05-23 Procedimiento para la preparación de {4,6-diamino-2-[1-(2-fluorobencil)-1h-pirazolo[3,4-b]piridin-3-il]pirimidin-5-il}carbamato de metilo y su purificación para el uso como principio activo farmacéutico ECSP12011920A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09177369 2009-11-27

Publications (1)

Publication Number Publication Date
ECSP12011920A true ECSP12011920A (es) 2012-07-31

Family

ID=43568194

Family Applications (1)

Application Number Title Priority Date Filing Date
ECSP12011920 ECSP12011920A (es) 2009-11-27 2012-05-23 Procedimiento para la preparación de {4,6-diamino-2-[1-(2-fluorobencil)-1h-pirazolo[3,4-b]piridin-3-il]pirimidin-5-il}carbamato de metilo y su purificación para el uso como principio activo farmacéutico

Country Status (22)

Country Link
US (1) US8501945B2 (es)
EP (1) EP2504335B1 (es)
JP (1) JP2013512211A (es)
KR (1) KR20120098815A (es)
CN (1) CN102712637A (es)
AR (1) AR079135A1 (es)
AU (1) AU2010323297A1 (es)
BR (1) BR112012012618A2 (es)
CA (1) CA2781922A1 (es)
CO (1) CO6551707A2 (es)
CU (1) CU20120083A7 (es)
DO (1) DOP2012000143A (es)
EA (1) EA201270639A1 (es)
EC (1) ECSP12011920A (es)
ES (1) ES2433236T3 (es)
IL (1) IL219861A0 (es)
MA (1) MA33764B1 (es)
MX (1) MX2012005942A (es)
TN (1) TN2012000259A1 (es)
TW (1) TW201200513A (es)
UY (1) UY33041A (es)
WO (1) WO2011064156A2 (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SI2504334T1 (sl) 2009-11-27 2014-11-28 Bayer Intellectual Property Gmbh Postopek čiščenja (4,6-diamino-2-(1-(2-fluorobenzil)-1H-pirazolo-(3,4-b)piridin-3-il)piri midin-5-il)metilkarbamata
DE102010021637A1 (de) 2010-05-26 2011-12-01 Bayer Schering Pharma Aktiengesellschaft Substituierte 5-Fluor-1H-Pyrazolopyridine und ihre Verwendung
DE102010043379A1 (de) 2010-11-04 2012-05-10 Bayer Schering Pharma Aktiengesellschaft Substituierte 6-Fluor-1H-Pyrazolo[4,3-b]pyridine und ihre Verwendung
DE102010043380A1 (de) 2010-11-04 2012-05-10 Bayer Schering Pharma Aktiengesellschaft Benzyl-substituierte Carbamate und ihre Verwendung
RS61609B1 (sr) * 2011-11-25 2021-04-29 Adverio Pharma Gmbh Supstituisani 5-fluor-1h-pirazolopiridin u kristalnom obliku
EP2958914B1 (en) 2013-02-21 2020-07-15 Adverio Pharma GmbH Forms of methyl {4,6-diamino-2-[1-(2-fluorobenzyl)-1h-pyrazolo[3,4-b]pyridino-3-yl]pyrimidino-5-yl}methyl carbamate
AU2016371762A1 (en) 2015-12-14 2018-06-21 Cyclerion Therapeutics, Inc. Use of sGC stimulators for the treatment of gastrointestinal sphincter dysfunction
CN108069960A (zh) * 2016-11-15 2018-05-25 江苏豪森药业集团有限公司 利奥西呱中间体的制备方法
WO2018111795A2 (en) 2016-12-13 2018-06-21 Ironwood Pharmaceuticals, Inc. Use of sgc stimulators for the treatment of esophageal motility disorders
WO2020014504A1 (en) 2018-07-11 2020-01-16 Cyclerion Therapeutics, Inc. USE OF sGC STIMULATORS FOR THE TREATMENT OF MITOCHONRIAL DISORDERS
EP3925953A1 (en) * 2020-06-16 2021-12-22 Adverio Pharma GmbH Process for preparing methyl {4,6-diamino-2-[5-fluoro-1-(2-fluorobenzyl)-1h-pyrazolo[3,4-b]pyridin-3-yl]pyrimidin-5-yl}carbamate

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9013750D0 (en) 1990-06-20 1990-08-08 Pfizer Ltd Therapeutic agents
GB9301192D0 (en) 1993-06-09 1993-06-09 Trott Francis W Flower shaped mechanised table
GB9401090D0 (en) 1994-01-21 1994-03-16 Glaxo Lab Sa Chemical compounds
EP0934311B1 (de) 1996-10-14 2009-05-13 Bayer HealthCare AG Neue heterocyclylmethyl-substituierte pyrazolderivate und ihre verwendung in der behandlung von herz-kreislauf-erkrankungen
DE19642255A1 (de) 1996-10-14 1998-04-16 Bayer Ag Verwendung von 1-Benzyl-3-(substituierten-hetaryl) -kondensierten Pyrazol-Derivaten
DE19649460A1 (de) 1996-11-26 1998-05-28 Bayer Ag Neue substituierte Pyrazolderivate
DE59803108D1 (de) 1997-11-12 2002-03-21 Bayer Ag 2-phenyl-substituierte imidazotriazinone als phosphodiesterase inhibitoren
DE19834047A1 (de) 1998-07-29 2000-02-03 Bayer Ag Substituierte Pyrazolderivate
DE19834045A1 (de) 1998-07-29 2000-02-03 Bayer Ag (4-Amino-5-ethylpyrimidin-2-yl)-1-(2-fluorbenzyl)-1H-pyrazolo[3,4-b]pyridin
DE19834044A1 (de) 1998-07-29 2000-02-03 Bayer Ag Neue substituierte Pyrazolderivate
DE19846514A1 (de) 1998-10-09 2000-04-20 Bayer Ag Neue Heterocyclyl-methyl-substituierte Pyrazole
DE10057751A1 (de) 2000-11-22 2002-05-23 Bayer Ag Neue Carbamat-substituierte Pyrazolopyridinderivate
EP1339716B1 (de) * 2000-11-22 2004-11-03 Bayer HealthCare AG lactam-substituierte pyrazolopyridinderivate
AR031176A1 (es) 2000-11-22 2003-09-10 Bayer Ag Nuevos derivados de pirazolpiridina sustituidos con piridina
DE10057754A1 (de) * 2000-11-22 2002-05-23 Bayer Ag Neue Sulfonamid-substituierte Pyrazolopyridinderivate
DE10122894A1 (de) * 2001-05-11 2002-11-14 Bayer Ag Neue Sulfonat-substituierte Pyrazolopyridinderivate
DE10132416A1 (de) * 2001-07-04 2003-01-16 Bayer Ag Neue Morpholin-überbrückte Pyrazolopyridinderivate
DE10220570A1 (de) * 2002-05-08 2003-11-20 Bayer Ag Carbamat-substituierte Pyrazolopyridine
DE10222550A1 (de) * 2002-05-17 2003-11-27 Bayer Ag Substituierte Benzyl-pyrazolopyridine
DE10351903A1 (de) * 2003-11-06 2005-06-09 Bayer Healthcare Ag Neue Kombination
DE102006021733A1 (de) * 2006-05-09 2007-11-22 Bayer Healthcare Ag 3-Tetrazolylindazole und 3-Tetrazolylpyrazolopyridine sowie ihre Verwendung
DE102006043443A1 (de) * 2006-09-15 2008-03-27 Bayer Healthcare Ag Neue aza-bicyclische Verbindungen und ihre Verwendung
DE102009004245A1 (de) * 2009-01-09 2010-07-15 Bayer Schering Pharma Aktiengesellschaft Neue anellierte, Heteroatom-verbrückte Pyrazol- und Imidazol-Derivate und ihre Verwendung

Also Published As

Publication number Publication date
UY33041A (es) 2011-06-30
JP2013512211A (ja) 2013-04-11
EP2504335B1 (de) 2013-09-04
CA2781922A1 (en) 2011-06-03
ES2433236T3 (es) 2013-12-10
AR079135A1 (es) 2011-12-28
KR20120098815A (ko) 2012-09-05
MA33764B1 (fr) 2012-11-01
US8501945B2 (en) 2013-08-06
EA201270639A1 (ru) 2013-01-30
US20110130411A1 (en) 2011-06-02
IL219861A0 (en) 2012-07-31
CO6551707A2 (es) 2012-10-31
AU2010323297A1 (en) 2012-06-14
TN2012000259A1 (en) 2013-12-12
BR112012012618A2 (pt) 2015-09-08
CU20120083A7 (es) 2012-10-15
DOP2012000143A (es) 2013-01-31
WO2011064156A2 (de) 2011-06-03
CN102712637A (zh) 2012-10-03
TW201200513A (en) 2012-01-01
WO2011064156A3 (de) 2011-10-20
MX2012005942A (es) 2012-10-03
EP2504335A2 (de) 2012-10-03

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