PT99409A - Processo para a preparacao de benzimidazois polissubstituidos - Google Patents

Processo para a preparacao de benzimidazois polissubstituidos

Info

Publication number
PT99409A
PT99409A PT99409A PT9940991A PT99409A PT 99409 A PT99409 A PT 99409A PT 99409 A PT99409 A PT 99409A PT 9940991 A PT9940991 A PT 9940991A PT 99409 A PT99409 A PT 99409A
Authority
PT
Portugal
Prior art keywords
benzimidazoes
preparing polysubstituted
polysubstituted
preparing
polysubstituted benzimidazoes
Prior art date
Application number
PT99409A
Other languages
English (en)
Other versions
PT99409B (pt
Inventor
Leroy B Townsend
John Charles Drach
Original Assignee
Univ Michigan
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 Univ Michigan filed Critical Univ Michigan
Publication of PT99409A publication Critical patent/PT99409A/pt
Publication of PT99409B publication Critical patent/PT99409B/pt

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/70Carbohydrates; Sugars; Derivatives thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/41Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
    • A61K31/4151,2-Diazoles
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/41Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
    • A61K31/41641,3-Diazoles
    • A61K31/41841,3-Diazoles condensed with carbocyclic rings, e.g. benzimidazoles
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/495Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
    • A61K31/505Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
    • A61K31/519Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim ortho- or peri-condensed with heterocyclic rings
    • A61K31/52Purines, e.g. adenine
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/70Carbohydrates; Sugars; Derivatives thereof
    • A61K31/7042Compounds having saccharide radicals and heterocyclic rings
    • A61K31/7052Compounds having saccharide radicals and heterocyclic rings having nitrogen as a ring hetero atom, e.g. nucleosides, nucleotides
    • A61K31/7056Compounds having saccharide radicals and heterocyclic rings having nitrogen as a ring hetero atom, e.g. nucleosides, nucleotides containing five-membered rings with nitrogen as a ring hetero atom
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D235/00Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
    • C07D235/02Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
    • C07D235/04Benzimidazoles; Hydrogenated benzimidazoles
    • C07D235/24Benzimidazoles; Hydrogenated benzimidazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D235/00Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
    • C07D235/02Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
    • C07D235/04Benzimidazoles; Hydrogenated benzimidazoles
    • C07D235/24Benzimidazoles; Hydrogenated benzimidazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2
    • C07D235/26Oxygen atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D235/00Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
    • C07D235/02Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
    • C07D235/04Benzimidazoles; Hydrogenated benzimidazoles
    • C07D235/24Benzimidazoles; Hydrogenated benzimidazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2
    • C07D235/30Nitrogen atoms not forming part of a nitro radical
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07HSUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H19/00Compounds containing a hetero ring sharing one ring hetero atom with a saccharide radical; Nucleosides; Mononucleotides; Anhydro-derivatives thereof
    • C07H19/02Compounds containing a hetero ring sharing one ring hetero atom with a saccharide radical; Nucleosides; Mononucleotides; Anhydro-derivatives thereof sharing nitrogen
    • C07H19/04Heterocyclic radicals containing only nitrogen atoms as ring hetero atom
    • C07H19/052Imidazole radicals

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Veterinary Medicine (AREA)
  • Medicinal Chemistry (AREA)
  • Molecular Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • Genetics & Genomics (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Saccharide Compounds (AREA)
PT99409A 1990-11-01 1991-10-31 Processo para a preparacao de benzimidazois polissubstituidos PT99409B (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/607,899 US5248672A (en) 1990-11-01 1990-11-01 Polysubstituted benzimidazole nucleosides as antiviral agents

Publications (2)

Publication Number Publication Date
PT99409A true PT99409A (pt) 1992-12-31
PT99409B PT99409B (pt) 1999-04-30

Family

ID=24434171

Family Applications (1)

Application Number Title Priority Date Filing Date
PT99409A PT99409B (pt) 1990-11-01 1991-10-31 Processo para a preparacao de benzimidazois polissubstituidos

Country Status (10)

Country Link
US (9) US5248672A (pt)
EP (1) EP0556334A4 (pt)
AU (1) AU657934B2 (pt)
CA (1) CA2100098A1 (pt)
IE (1) IE913818A1 (pt)
IL (1) IL99933A (pt)
NZ (1) NZ240434A (pt)
PT (1) PT99409B (pt)
WO (1) WO1992007867A1 (pt)
ZA (1) ZA918685B (pt)

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5248672A (en) * 1990-11-01 1993-09-28 The Regents Of The University Of Michigan Polysubstituted benzimidazole nucleosides as antiviral agents
GB9205071D0 (en) * 1992-03-09 1992-04-22 Wellcome Found Therapeutic nucleosides
US5605919A (en) * 1993-02-26 1997-02-25 Takeda Chemical Industries, Ltd. Treatment for viral diseases
ES2072193B1 (es) * 1993-05-21 1996-02-16 Espanola Prod Quimicos Nuevos derivados del1-fenilmetil bencimidazol piperacinas.
WO1995029897A1 (en) * 1994-04-29 1995-11-09 G.D. Searle & Co. METHOD OF USING (H+/K+) ATPase INHIBITORS AS ANTIVIRAL AGENTS
GB9413724D0 (en) 1994-07-07 1994-08-24 Wellcome Found Therapeutic nucleosides
US5656449A (en) * 1995-03-06 1997-08-12 Molecular Probes, Inc. Neutral unsymmetrical cyanine dyes
US6228871B1 (en) 1995-07-10 2001-05-08 Merck & Co., Inc. Angiogenesis inhibitors
DE69624827T2 (de) * 1995-08-18 2003-09-04 The Regents Of The University Of Michigan, Ann Arbor 5'-substitutierte-ribofuranosyl benzimidazolen als antivirale.
WO1997008150A1 (en) * 1995-08-22 1997-03-06 The Du Pont Merck Pharmaceutical Company Substituted cyclic ureas and derivatives thereof useful as retroviral protease inhibitors
GB9600143D0 (en) 1996-01-05 1996-03-06 Wellcome Found Therapeutic compounds
GB9600142D0 (en) * 1996-01-05 1996-03-06 Wellcome Found Chemical compounds
EP1019425A1 (en) * 1996-01-23 2000-07-19 The Regents Of The University Of Michigan Modified benzimidazole nucleosides as antiviral agents
CA2280761A1 (en) 1997-02-13 1998-08-20 Stanley Dawes Chamberlain Benzimidazole derivatives
EP0963371B1 (en) 1997-02-25 2003-05-02 THE GOVERNMENT OF THE UNITED STATES OF AMERICA, as represented by THE SECRETARY, DEPARTMENT OF HEALTH AND HUMAN SERVICES Substituted benzimidazoles as non-nucleoside inhibitors of reverse transcriptase
BR9810745A (pt) * 1997-06-10 2001-03-13 Glaxo Group Ltd Derivados de benzimidazol
NZ502882A (en) 1997-07-30 2002-02-01 Glaxo Group Ltd Lyxofuranosyl benzimidazoles as antiviral agents
US6465484B1 (en) 1997-09-26 2002-10-15 Merck & Co., Inc. Angiogenesis inhibitors
US6162804A (en) * 1997-09-26 2000-12-19 Merck & Co., Inc. Tyrosine kinase inhibitors
GB9806937D0 (en) 1998-03-31 1998-05-27 Procter & Gamble A spray device
WO1999051619A1 (en) * 1998-04-03 1999-10-14 The Regents Of The University Of Michigan Arabinofuranosyl benzimidazoles as antiviral agents
GB9807355D0 (en) 1998-04-07 1998-06-03 Glaxo Group Ltd Antiviral compound
GB9807354D0 (en) * 1998-04-07 1998-06-03 Glaxo Group Ltd Antiviral compound
CA2341409A1 (en) * 1998-08-31 2000-03-09 Merck And Co., Inc. Novel angiogenesis inhibitors
GB0008939D0 (en) 2000-04-11 2000-05-31 Glaxo Group Ltd Process for preparing substituted benzimidazole compounds
US7321033B2 (en) * 2001-11-27 2008-01-22 Anadys Pharmaceuticals, Inc. 3-B-D-ribofuranosylthiazolo [4,5-d] pyrimidine nucleosides and uses thereof
AP2004003069A0 (en) 2001-11-27 2004-06-30 Anadys Pharmaceuticals Inc 3-beta-d-ribofuranosynthiazolo [4-5-d] pyridimine nucleosides and uses thereof.
US20070167353A1 (en) * 2003-10-24 2007-07-19 John Hilfinger Prodrug composition
US7776529B2 (en) 2003-12-05 2010-08-17 Life Technologies Corporation Methine-substituted cyanine dye compounds
US8858960B2 (en) * 2004-11-19 2014-10-14 GlaxoSmithKline, LLC Method of producing a pharmaceutical product
US8022032B2 (en) * 2004-11-19 2011-09-20 Smithkline Beecham Corporation Method for customized dispensing of variable dose drug combination products for individualizing of therapies
US7560544B2 (en) 2004-12-17 2009-07-14 Anadys Pharmaceuticals, Inc. 3,5-Disubsitituted and 3,5,7-trisubstituted-3H-oxazolo and 3H-thiazolo[4,5-d]pyrimidin-2-one compounds and prodrugs thereof
WO2006101911A1 (en) 2005-03-16 2006-09-28 Case Western Reserve University Selective inhibitors of translesion dna replication
US9029345B2 (en) * 2005-03-16 2015-05-12 Case Western Reserve University Selective inhibitors of translesion DNA replication
JP5306811B2 (ja) 2005-05-11 2013-10-02 ライフ テクノロジーズ コーポレーション 2本鎖dnaへの高い選択性を有する蛍光化学物質及びそれらの使用
DE602006015700D1 (de) 2005-11-21 2010-09-02 Anadys Pharmaceuticals Inc Neues verfahren zur herstellung von 5-amino-3h-thiazoloä4,5-düpyrimidin-2-on
GB0608899D0 (en) * 2006-05-05 2006-06-14 Leuven K U Res & Dev Novel viral replication inhibitors
KR101461604B1 (ko) * 2006-06-22 2014-11-18 애나디스 파마슈티칼스, 인코포레이티드 5-아미노-3-(3''-데옥시-β-D-리보퓨라노실)-티아졸로[4,5-d]파이리미딘-2,7-다이온의 프로드럭
WO2008011406A2 (en) 2006-07-18 2008-01-24 Anadys Pharmaceuticals, Inc. Carbonate and carbamate prodrugs of thiazolo [4,5-d] pyrimidines
EP2259027B1 (en) * 2009-06-04 2012-12-05 Sensirion AG Method and apparatus for processing individual sensor devices
CN102344469A (zh) * 2011-07-26 2012-02-08 江西科技师范学院 固体酸SO42-/γ-AL2O3催化合成1, 2, 3-O-三乙酰基-5-脱氧-D-呋喃核糖的方法
US10292390B2 (en) 2011-11-04 2019-05-21 Wisconsin Alumni Research Foundation Inhibition and dispersion of bacterial biofilms with 2-aminobenzimidazole derivatives
US10478431B2 (en) 2014-11-26 2019-11-19 The J. David Gladstone Institutes Methods for treating a cytomegalovirus infection
RU2629670C2 (ru) * 2016-08-04 2017-08-31 Федеральное государственное бюджетное учреждение науки институт биоорганической химии им. академиков М.М. Шемякина и Ю.А. Овчинникова Российской академии наук (ИБХ РАН) 2-Амино-5,6-дифтор-1-(бета-D-рибофуранозил)-бензимидазол, способ получения и противовирусная активность его в отношении вируса герпеса простого 1-го типа
US12043644B2 (en) * 2020-06-23 2024-07-23 Biometrix Technology Inc Benzimidazole derivatives, preparation method thereof and use thereof as anti-cancer agent or anti-virus agent comprising the same

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860131A (en) * 1953-05-05 1958-11-11 Merck & Co Inc Benzimidazole derivatives
GB783306A (en) * 1954-04-12 1957-09-18 Merck & Co Inc Trihalo-1-d-ribofuranosyl-benzimidazole compounds
US3037980A (en) * 1955-08-18 1962-06-05 Burroughs Wellcome Co Pyrrolopyrimidine vasodilators and method of making them
US2935508A (en) * 1956-11-23 1960-05-03 Merck & Co Inc Benzimidazole derivatives and processes for preparing the same
US3311628A (en) 1965-03-09 1967-03-28 Bristol Myers Co Derivatives of pyrrolo [2, 3-d] pyrimidine
US3914310A (en) * 1965-08-06 1975-10-21 Ciba Geigy Corp Phenoxy-substituted ortho-nitroanilines and ortho-phenylenediamines
CH443777A (de) * 1965-08-06 1968-02-15 Agripat Sa Verfahren zum Schützen textiler Keratinfasern vor Insektenfrass und Mittel zur Durchführung dieses Verfahrens
CH494533A (de) * 1969-04-25 1970-08-15 Agripat Sa Verfahren zur Bekämpfung von Mikroorganismen, die nichttextile organische Materialien und Gebrauchsgegenstände schädigen und zerstören
US3867386A (en) * 1969-11-04 1975-02-18 American Home Prod 5-amino-2,6-substituted-7h-pyrrolo(2,3-d)pyrimidines and related compounds
US3631036A (en) * 1969-11-04 1971-12-28 American Home Prod 5-amino-2 6-substituted-7h-pyrrolo(2 3-d) pyrimidines and related compounds
US3655901A (en) * 1970-07-30 1972-04-11 Merck & Co Inc Method of inhibiting the formation of phenylethanalamine-n-methyl transferase with 2-aminobenzimidazoles
US3817982A (en) * 1971-12-29 1974-06-18 Syntex Inc 2{40 ,3{40 -unsaturated nucleosides and method of making
US4199574A (en) * 1974-09-02 1980-04-22 Burroughs Wellcome Co. Methods and compositions for treating viral infections and guanine acyclic nucleosides
US3962211A (en) * 1975-01-13 1976-06-08 The University Of Utah 7-substituted nucleoside compounds
DE2818676A1 (de) * 1978-04-27 1979-11-08 Troponwerke Gmbh & Co Kg Substituierte 5,6-dimethylpyrrolo 2,3-d pyrimidine, verfahren zu ihrer herstellung und ihre verwendung als arzneimittel
DE3036390A1 (de) * 1980-09-26 1982-05-13 Troponwerke GmbH & Co KG, 5000 Köln Neue pyrrolo-pyrimidine, verfahren zu ihrer herstellung und ihre verwendung bei der herstellung von biologischen wirkstoffen
DE3145287A1 (de) * 1981-11-14 1983-05-19 Troponwerke GmbH & Co KG, 5000 Köln Pyrrolo (2.3-d)pyrimidine, verfahren zu ihrer herstellung und ihre verwendung als arzneimittel
US4596798A (en) * 1982-03-30 1986-06-24 The United States Of America As Represented By The Secretary Of The Army 2-acetylpyridine thiosemicarbazones as antiviral agents
US4482708A (en) * 1982-08-09 1984-11-13 Nguyen Nicolas C 3', 5'-Dinucleoside phosphates of 5,6-dichloro-1-β-D-ribofuranosyl-1-benzimidazole and methods of making and using the same
US5077407A (en) * 1983-07-01 1991-12-31 The Upjohn Company Substituted 2-[monoannelated (3,4-,4,5-, and 5,6-) pyridylalkylenesulfinyl]benzimidazoles
US4777129A (en) * 1983-12-12 1988-10-11 Molecular Diagnostics, Inc. Nucleic acid probe detectable by specific nucleic acid binding protein
CA1294960C (en) * 1986-10-24 1992-01-28 Thomas C. Malone 7-deazaguanines as immunomodulators
CA1321994C (en) * 1987-10-28 1993-09-07 Reid Von Borstel Acylated uridine and cytidine and uses thereof
US4892865A (en) * 1987-12-01 1990-01-09 The Regents Of The University Of Michigan Pyrrolo[2,3-d]pyrimidine nucleosides as antiviral agents
US4927830A (en) * 1988-04-08 1990-05-22 The Regents Of The University Of Michigan Acyclic pyrrolo[2,3-D]pyrimidine analogs as antiviral agents
US4968686A (en) * 1988-04-08 1990-11-06 The Regents Of The University Of Michigan Acyclic pyrrolo [2,3-d]pyrimidine analogs as antiviral agents
US5149700A (en) * 1990-05-30 1992-09-22 American Home Products Corporation Substituted arylsulfonamides and benzamides
US5248672A (en) * 1990-11-01 1993-09-28 The Regents Of The University Of Michigan Polysubstituted benzimidazole nucleosides as antiviral agents

Also Published As

Publication number Publication date
US5705490A (en) 1998-01-06
AU9080991A (en) 1992-05-26
NZ240434A (en) 1997-06-24
AU657934B2 (en) 1995-03-30
ZA918685B (en) 1992-08-26
EP0556334A4 (en) 1995-03-29
US5360795A (en) 1994-11-01
WO1992007867A1 (en) 1992-05-14
EP0556334A1 (en) 1993-08-25
US5665709A (en) 1997-09-09
CA2100098A1 (en) 1992-05-02
US6093698A (en) 2000-07-25
US5712255A (en) 1998-01-27
IE913818A1 (en) 1992-05-22
US5248672A (en) 1993-09-28
US5646125A (en) 1997-07-08
PT99409B (pt) 1999-04-30
US5574058A (en) 1996-11-12
IL99933A0 (en) 1992-08-18
IL99933A (en) 1996-09-12
US5654283A (en) 1997-08-05

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