KR970707143A - 2'-데옥시-2', 2'-디플루오로뉴클레오시드의 단리 및 정제 방법(Process for Purifying and lsolating 2´-Deoxy-2´, 2´-Difluoronucleosides) - Google Patents

2'-데옥시-2', 2'-디플루오로뉴클레오시드의 단리 및 정제 방법(Process for Purifying and lsolating 2´-Deoxy-2´, 2´-Difluoronucleosides)

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Publication number
KR970707143A
KR970707143A KR1019970703223A KR19970703223A KR970707143A KR 970707143 A KR970707143 A KR 970707143A KR 1019970703223 A KR1019970703223 A KR 1019970703223A KR 19970703223 A KR19970703223 A KR 19970703223A KR 970707143 A KR970707143 A KR 970707143A
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formula
rich
mixture
nucleobase
reaction mixture
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KR1019970703223A
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KR100424990B1 (ko
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타-센 주
로리에 미쉘 포티트
더글라스 팻톤 크젤
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피터 쥐. 스트링거
일라이 릴리 앤드 캄파니
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    • 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
    • C07H19/06Pyrimidine radicals
    • 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
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/55Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Molecular Biology (AREA)
  • Saccharide Compounds (AREA)
  • Cephalosporin Compounds (AREA)

Abstract

(a) 고비점 용매 중에 R" 및 하기 화학식(IB)의 베타 아노머 풍부 뉴클레오시드를 함유하는 혼합물을 제공하는 단계; (b) 이 혼합물을 에테르, 에스테르 및 니트릴로 이루어진 군으로부터 선택된 유기 용매를 사용하여 희석하는 단계; (c) 희석시킨 반응 혼합물을 산 수용액에 첨가하는 단계; 및 (d) 이와 같이 제조된 산 혼합물을 화학식(IB)에서 W이 W'인 생성물이 침전될 때까지 70℃ 내지 100℃ 온도에 유지하는 단계를 포함하는 베타아노머 풍부 뉴클레오시드의 단리 및 정제 방법이 제공된다.
상기 식에서, X는 각각 독립적으로 히드록시 보호기들로부터 선택되고, R'은 하기 화학식의 핵염기이다.
상기 식에서, W는 아미노 보호기이고, R"은 하기 화학식의 핵염기이다.
상기 식에서, W'는 아미노 보호기 또는 수소이다.

Description

2-데옥시-2', 2'-디플루오로뉴클레오시드의 단리 및 정제 방법(Process for Purifying and lsolating 2'-Deoxy-2', 2'-Difluoronucleosides)
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (7)

  1. (a) 고비점 용매 중에 R" 및 하기 화학식(IB)의 베타 아노머 풍부 뉴클레오시드를 함유하는 혼합물을 제공하는 단계; (b) 이 혼합물을 에테르, 에스테르 및 니트릴로 이루어진 군으로부터 선택된 유기 용매를 사용하여 희석하는 단계; (c) 희석시킨 반응 혼합물을 산 수용액에 첨가하는 단계; 및 (d) 이와 같이 제조된 산 혼합물을 화학식(IB)에서 W이 W'인 생성물이 침전될 때까지 70℃ 내지 100℃ 온도에 유지하는 단계를 포함하는 베타 아노머 풍부 뉴클레오시드의 단리 및 정제 방법.
    상기 식에서, X는 각각 독립적으로 히드록시 보호기들로부터 선택되고, R'은 하기 화학식의 핵염기이고,
    W는 아미노 보호기이고, R"은 하기 화학식의 핵염기이고,
    W'는 아미노 보호기 또는 수소이다.
  2. 제1항에 있어서, 반응 혼합물을 아세토니트릴, 아세트산 에틸 및 테트라히드로푸란을 사용하여 희석시키는 방법.
  3. 제2항에 있어서, 반응 혼합물을 아세토니트릴을 사용하여 희석시키는 방법.
  4. 제1항에 있어서, 산 수용액이 1N 내지 6N 염산인 방법.
  5. 제1항에 있어서, 산 혼합물을 생성물이 침전하는 동안 교반하는 방법.
  6. 제1항에 있어서, 정제한 화학식(IB)의 생성물을 탈블록킹하여 1-(2'-데옥시-2', 2'-디플루오로-D-리보푸라노실-4-아미노피리미딘-2-온으로 명명되는 뉴클레오시드를 형성하는 단계를 추가로 포함하는 방법.
  7. 실질적으로 실시예를 참고로하여 앞서 서술된 베타 아노머 풍부 뉴클레오시드 정제 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019970703223A 1994-11-17 1995-11-01 2'-데옥시-2',2'-디플루오로뉴클레오시드의단리및정제방법 KR100424990B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/340,972 US5606048A (en) 1992-06-22 1994-11-17 Stereoselective glycosylation process for preparing 2'-Deoxy-2', 2'-difluoronucleosides and 2'-deoxy-2'-fluoronucleosides
US08/340,972 1994-11-17

Publications (2)

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KR970707143A true KR970707143A (ko) 1997-12-01
KR100424990B1 KR100424990B1 (ko) 2004-05-20

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Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6326507B1 (en) 1998-06-19 2001-12-04 Trustees Of Dartmouth College Therapeutic compounds and methods of use
MY164523A (en) 2000-05-23 2017-12-29 Univ Degli Studi Cagliari Methods and compositions for treating hepatitis c virus
EA200601591A1 (ru) 2000-05-26 2007-02-27 Айденикс (Кайман) Лимитед Применение рибонуклеозидных соединений для лечения флавивирусных и пестивирусных инфекций
US7435755B2 (en) * 2000-11-28 2008-10-14 The Trustees Of Dartmouth College CDDO-compounds and combination therapies thereof
EP1465615B1 (en) * 2002-01-15 2012-08-01 Trustees of Dartmouth College Tricyclic-bis-enone derivatives and methods of use thereof
US7608600B2 (en) 2002-06-28 2009-10-27 Idenix Pharmaceuticals, Inc. Modified 2′ and 3′-nucleoside prodrugs for treating Flaviviridae infections
CN101172993A (zh) * 2002-06-28 2008-05-07 埃迪尼克斯(开曼)有限公司 用于治疗黄病毒感染的2′-c-甲基-3′-o-l-缬氨酸酯核糖呋喃基胞苷
US7456155B2 (en) * 2002-06-28 2008-11-25 Idenix Pharmaceuticals, Inc. 2′-C-methyl-3′-O-L-valine ester ribofuranosyl cytidine for treatment of flaviviridae infections
WO2004041203A2 (en) * 2002-11-04 2004-05-21 Xenoport, Inc. Gemcitabine prodrugs, pharmaceutical compositions and uses thereof
HUE033832T2 (en) 2002-11-15 2018-01-29 Idenix Pharmaceuticals Llc 2'-methyl nucleosides in combination with interferon and Flaviviridae mutation
MXPA05006230A (es) * 2002-12-12 2005-09-20 Idenix Cayman Ltd Proceso para la produccion de nucleosidos ramificados-2'.
US20060040944A1 (en) * 2004-06-23 2006-02-23 Gilles Gosselin 5-Aza-7-deazapurine derivatives for treating Flaviviridae
US7214791B2 (en) * 2004-07-01 2007-05-08 Shenzhen Hande Technology Co., Ltd. Method for preparation of 2′-deoxy-2′, 2′-difluoro-β-cytidine or pharmaceutically acceptable salts thereof by using 1,6-anhydro-β-d-glucose as raw material
JP2007522151A (ja) * 2004-12-08 2007-08-09 シコール インコーポレイティド ジフルオロヌクレオシド及びその調製方法
EP1831236A4 (en) * 2004-12-30 2013-11-20 Hanmi Science Co Ltd PROCESS FOR PREPARING 2'-DEOXY-2 ', 2'-DIFLUOROCYTIDINE
WO2006070985A1 (en) 2004-12-30 2006-07-06 Hanmi Pharm. Co., Ltd. METHOD FOR THE PREPARATION OF 2#-DEOXY-2#,2#-DIFLUOROCYTIDINE
KR20070112774A (ko) * 2005-03-04 2007-11-27 다브르 파마 리미티드 베타―아노머가 많은21데옥시,21,21-디플루오로-d-리보푸라노실뉴클레오시드의 제조를 위한 중간체 및 제조 방법
JP4516863B2 (ja) * 2005-03-11 2010-08-04 株式会社ケンウッド 音声合成装置、音声合成方法及びプログラム
AU2006255706B2 (en) * 2005-06-03 2011-06-23 Scinopharm Taiwan, Ltd. Process of making an alpha-anomer enriched 2-deoxy-2,2-difluoro-d-ribofuranosyl sulfonate and use thereof for making a beta nucleoside
AU2011202539B2 (en) * 2005-06-03 2012-07-05 Scinopharm Taiwan, Ltd. Process of making an alpha-anomer enriched 2-deoxy-2,2-difluoro-d-ribofuranosyl sulfonate and use thereof for making a beta nucleoside
US8193354B2 (en) 2005-10-28 2012-06-05 Arch Pharmalabs Limited Process for preparation of Gemcitabine hydrochloride
WO2007075876A2 (en) * 2005-12-23 2007-07-05 Idenix Pharmaceuticals, Inc. Process for preparing a synthetic intermediate for preparation of branched nucleosides
CA2640463A1 (en) * 2006-02-06 2007-10-18 Dr. Reddy's Laboratories Ltd. Preparation of gemcitabine
US8299046B2 (en) * 2006-11-17 2012-10-30 Trustees Of Dartmouth College Synthetic triterpenoids and tricyclic-bis-enones for use in stimulating bone and cartilage growth
JP2010510243A (ja) * 2006-11-17 2010-04-02 トラスティーズ オブ ダートマス カレッジ 三環系−ビス−エノン(tbe)の合成および生物学的活性
US8921340B2 (en) 2006-11-17 2014-12-30 Trustees Of Dartmouth College Methods for using synthetic triterpenoids in the treatment of bone or cartilage diseases or conditions
EP2139884B1 (en) * 2007-03-23 2013-12-04 Dongwoo Syntech Co., Ltd. Process for preparing of 2'-deoxy-2'2'-difluorocytidine
CN100475832C (zh) 2007-05-31 2009-04-08 南京卡文迪许生物工程技术有限公司 一种新颖的高立体选择性合成吉西他滨工艺及中间体
US20090048205A1 (en) * 2007-08-15 2009-02-19 Colin Meyer Combination therapy with synthetic triterpenoids and gemcitabine
EP2050757A1 (en) 2007-10-10 2009-04-22 Cilag AG Method of producing 2' -deoxy-5-azacytidine (Decitabine)
JO2778B1 (en) 2007-10-16 2014-03-15 ايساي انك Certain vehicles, installations and methods
EP3492077A1 (en) * 2008-01-11 2019-06-05 Reata Pharmaceuticals, Inc. Synthetic triterpenoids and methods of use in the treatment of disease
US8071632B2 (en) * 2008-04-18 2011-12-06 Reata Pharmaceuticals, Inc. Antioxidant inflammation modulators: novel derivatives of oleanolic acid
EP2279197B1 (en) * 2008-04-18 2014-11-05 Reata Pharmaceuticals, Inc. Antioxidant inflammation modulators: oleanolic acid derivatives with saturation in the c-ring
LT2276493T (lt) 2008-04-18 2019-01-10 Reata Pharmaceuticals, Inc. Antioksidaciniai uždegimo moduliatoriai: oleanolio rūgšties dariniai su amino ir kitomis modifikacijomis c-17
DK2271658T3 (en) * 2008-04-18 2017-02-06 Reata Pharmaceuticals Inc ANTIOXIDANT INFLAMMATION MODULATORS: C-17 HOMOLOGED OLEANOLIC ACID DERIVATIVES
BRPI0911105B1 (pt) 2008-04-18 2022-11-08 Reata Pharmaceuticals, Inc Compostos contendo um farmacóforo anti-inflamatório, composição farmacêutica, bem como seus usos
AU2009274037B2 (en) * 2008-07-22 2015-07-09 Trustees Of Dartmouth College Monocyclic cyanoenones and methods of use thereof
TWI477508B (zh) * 2009-04-06 2015-03-21 Otsuka Pharma Co Ltd 用以治療癌症之組成物及方法
US8609631B2 (en) 2009-04-06 2013-12-17 Eisai Inc. Compositions and methods for treating cancer
WO2010118010A1 (en) * 2009-04-06 2010-10-14 Eisai Inc. Combination of decitabine with cytidine deaminase inhibitor and use thereof in the treatment of cancer
WO2010118013A1 (en) * 2009-04-06 2010-10-14 Eisai Inc. Combination of cytidine-based antineoplastic drugs with cytidine deaminase inhibitor and use thereof in the treatment of cancer
RS57449B1 (sr) 2012-04-04 2018-09-28 Halozyme Inc Kombinovana terapija sa hijaluronidazom i taksanom koji ciljno deluje na tumor
US8921419B2 (en) 2012-05-08 2014-12-30 Trustees Of Dartmouth College Triterpenoids and compositions containing the same
WO2019222435A1 (en) 2018-05-16 2019-11-21 Halozyme, Inc. Methods of selecting subjects for combination cancer therapy with a polymer-conjugated soluble ph20

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3282921A (en) * 1964-06-04 1966-11-01 Syntex Corp Halo-deoxynucleosides and processes for the preparation thereof
US3721664A (en) * 1970-01-27 1973-03-20 Hoffmann La Roche Preparation of 5-cytosine nucleosides
DE2628202A1 (de) * 1976-06-23 1977-12-29 Max Planck Gesellschaft Verfahren zur herstellung von 2'-substituierten-d-ribofuranosylpurinderivaten
DE2721466A1 (de) * 1977-05-12 1978-11-16 Robugen Gmbh Verfahren zur herstellung von 2'-desoxyribofuranosylnucleosiden
US4211773A (en) * 1978-10-02 1980-07-08 Sloan Kettering Institute For Cancer Research 5-Substituted 1-(2'-Deoxy-2'-substituted-β-D-arabinofuranosyl)pyrimidine nucleosides
FR2531962B1 (fr) * 1982-08-17 1986-11-14 Sandoz Sa Nouveaux derives de la desoxyuridine, leur preparation et leur utilisation comme medicaments
US4526988A (en) * 1983-03-10 1985-07-02 Eli Lilly And Company Difluoro antivirals and intermediate therefor
US4625020A (en) * 1983-11-18 1986-11-25 Bristol-Myers Company Nucleoside process
CA1295998C (en) * 1985-07-29 1992-02-18 Sai P. Sunkara Nucleosides and their use as antineoplastic agents
US4751221A (en) * 1985-10-18 1988-06-14 Sloan-Kettering Institute For Cancer Research 2-fluoro-arabinofuranosyl purine nucleosides
US5223608A (en) * 1987-08-28 1993-06-29 Eli Lilly And Company Process for and intermediates of 2',2'-difluoronucleosides
US4965374A (en) * 1987-08-28 1990-10-23 Eli Lilly And Company Process for and intermediates of 2',2'-difluoronucleosides
EP0339161A1 (en) * 1988-04-01 1989-11-02 Merrell Dow Pharmaceuticals Inc. Novel fluorophosphonate nucleotide derivatives
JPH0232093A (ja) * 1988-06-08 1990-02-01 Merrell Dow Pharmaceut Inc 抗レトロウィルスジフルオロ化ヌクレオシド類
HU906976D0 (en) * 1989-11-13 1991-05-28 Bristol Myers Squibb Co Process for producing 2', 3'-didesoxy-2'-fluoarabinonucleoside analogues
US5175267A (en) * 1990-03-02 1992-12-29 University Of Georgia Research Foundation, Inc. Stereoselective glycosylation of hetercyclic bases
US5371210A (en) * 1992-06-22 1994-12-06 Eli Lilly And Company Stereoselective fusion glycosylation process for preparing 2'-deoxy-2',2'-difluoronucleosides and 2'-deoxy-2'-fluoronucleosides
UA41261C2 (uk) * 1992-06-22 2001-09-17 Елі Ліллі Енд Компані Спосіб одержання збагачених бета-аномером нуклеозидів
US5426183A (en) * 1992-06-22 1995-06-20 Eli Lilly And Company Catalytic stereoselective glycosylation process for preparing 2'-deoxy-2',2'-difluoronucleosides and 2'-deoxy-2'-fluoronucleosides
US5401838A (en) * 1992-06-22 1995-03-28 Eli Lilly And Company Stereoselective fusion glycosylation process for preparing 2'-deoxy-2',2'-difluoronucleosides and 2'-deoxy-2'-fluoronucleosides

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BG101485A (en) 1998-03-31
CN1165519A (zh) 1997-11-19
AU702588B2 (en) 1999-02-25
MY115183A (en) 2003-04-30
TW377356B (en) 1999-12-21
CA2205350A1 (en) 1996-05-30
NO308305B1 (no) 2000-08-28
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YU49446B (sh) 2006-03-03
YU70995A (sh) 1998-09-18
PE50196A1 (es) 1996-11-30
EP0712860B1 (en) 2001-12-05
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PL182052B1 (pl) 2001-10-31
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ATE210142T1 (de) 2001-12-15
IL115854A (en) 2000-07-16
US5606048A (en) 1997-02-25
AU4139396A (en) 1996-06-17
DE69524365T2 (de) 2002-08-14
SK48597A3 (en) 1997-11-05
UA53614C2 (uk) 2003-02-17
JPH10509170A (ja) 1998-09-08
KR100424990B1 (ko) 2004-05-20
EP0712860A2 (en) 1996-05-22
RU2161622C2 (ru) 2001-01-10
CZ148197A3 (en) 1997-08-13
ZA959321B (en) 1997-05-05
DE69524365D1 (de) 2002-01-17
HUT77926A (hu) 1998-11-30
HU219019B (hu) 2001-01-29
BR9509904A (pt) 1997-10-14
NO972214D0 (no) 1997-05-14
DK0712860T3 (da) 2002-03-04
BG62737B1 (bg) 2000-06-30
NO972214L (no) 1997-05-14
CN1044119C (zh) 1999-07-14
MX9703548A (es) 1997-08-30
CA2205350C (en) 2007-09-04

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