CN108366994B - 新型Jak1选择性抑制剂及其用途 - Google Patents

新型Jak1选择性抑制剂及其用途 Download PDF

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Publication number
CN108366994B
CN108366994B CN201780004442.5A CN201780004442A CN108366994B CN 108366994 B CN108366994 B CN 108366994B CN 201780004442 A CN201780004442 A CN 201780004442A CN 108366994 B CN108366994 B CN 108366994B
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compound
disease
equiv
imidazo
pyridin
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CN108366994A (zh
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梁从新
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Guangzhou Gao Ling Pharmaceutical Co ltd
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Hangzhou Gaoguang Pharmaceutical Co ltd
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D491/00Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
    • C07D491/12Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains three hetero rings
    • C07D491/14Ortho-condensed systems
    • C07D491/147Ortho-condensed systems the condensed system containing one ring with oxygen as ring hetero atom and two rings with nitrogen as ring hetero atom
    • 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
    • A61K31/41551,2-Diazoles non condensed and containing further heterocyclic rings
    • 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
    • A61K31/435Heterocyclic 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
    • A61K31/4353Heterocyclic 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
    • A61K31/437Heterocyclic 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
    • 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P19/00Drugs for skeletal disorders
    • A61P19/02Drugs for skeletal disorders for joint disorders, e.g. arthritis, arthrosis
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P29/00Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00Antineoplastic agents
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P37/00Drugs for immunological or allergic disorders
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P37/00Drugs for immunological or allergic disorders
    • A61P37/02Immunomodulators
    • A61P37/06Immunosuppressants, e.g. drugs for graft rejection
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D211/00Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D491/00Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
    • C07D491/02Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains two hetero rings
    • C07D491/04Ortho-condensed systems
    • C07D491/044Ortho-condensed systems with only one oxygen atom as ring hetero atom in the oxygen-containing ring
    • C07D491/048Ortho-condensed systems with only one oxygen atom as ring hetero atom in the oxygen-containing ring the oxygen-containing ring being five-membered

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Immunology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Engineering & Computer Science (AREA)
  • Rheumatology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Epidemiology (AREA)
  • Pain & Pain Management (AREA)
  • Transplantation (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
CN201780004442.5A 2016-10-03 2017-09-30 新型Jak1选择性抑制剂及其用途 Active CN108366994B (zh)

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CN202110514751.5A CN113214278B (zh) 2016-10-03 2017-09-30 新型Jak1选择性抑制剂及其用途

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US201662403660P 2016-10-03 2016-10-03
US62/403,660 2016-10-03
PCT/US2017/054668 WO2018067422A1 (en) 2016-10-03 2017-09-30 Novel jak1 selective inhibitors and uses thereof

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CN108366994B true CN108366994B (zh) 2021-10-01

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EP (1) EP3509591B1 (cg-RX-API-DMAC7.html)
JP (1) JP7089141B2 (cg-RX-API-DMAC7.html)
KR (1) KR102399848B1 (cg-RX-API-DMAC7.html)
CN (2) CN108366994B (cg-RX-API-DMAC7.html)
AU (3) AU2017339417C1 (cg-RX-API-DMAC7.html)
DK (1) DK3509591T3 (cg-RX-API-DMAC7.html)
EA (1) EA201990523A1 (cg-RX-API-DMAC7.html)
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Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RS62695B1 (sr) 2016-10-03 2022-01-31 Highlightll Pharmaceutical Hainan Co Ltd Novi jak1 selektivni inhibitori i njihove upotrebe
PL3568396T3 (pl) 2017-01-11 2021-05-31 Leo Pharma A/S Nowe pochodne aminoimidazopirydyny jako inhibitory kinaz janusowych i ich zastosowanie farmaceutyczne
EA202191170A1 (ru) * 2018-10-31 2021-07-27 Инсайт Корпорейшн Комбинированная терапия для лечения гематологических заболеваний
IL285999B1 (en) * 2019-03-05 2025-09-01 Incyte Corp JAK1 inhibitor pathway for the treatment of chronic lung allograft dysfunction
TW202102222A (zh) * 2019-03-19 2021-01-16 美商英塞特公司 白斑病之生物標記物
BR112021024530A2 (pt) 2019-06-06 2022-01-18 Highlightll Pharmaceutical Hainan Co Ltd Método para sintetizar composto de furoimidazopiridina, substância polimórfica e substância polimórfica de sal
KR20240100424A (ko) 2019-06-06 2024-07-01 항저우 하이라이트엘엘 파마슈티컬 씨오., 엘티디. 푸로이미다조피리딘 화합물의 합성 방법, 푸로이미다조피리딘 화합물의 결정 형태, 및 그의 염의 결정 형태
BR112022023550A2 (pt) 2020-05-19 2023-01-03 Bayer Cropscience Ag (tio)amidas azabicíclicas como compostos fungicidas
CN116057056B (zh) 2020-06-10 2025-09-19 拜耳公司 作为杀真菌剂的氮杂双环取代的杂环化合物
WO2022260945A1 (en) * 2021-06-07 2022-12-15 The Regents Of The University Of California Compositions and methods for treating celiac disease
CN118059096A (zh) * 2021-09-13 2024-05-24 杭州高光制药有限公司 治疗cns病症的方法
CN114213424B (zh) 2021-12-30 2023-05-26 杭州高光制药有限公司 一种呋喃[3,2-b]并吡啶衍生物的合成方法
WO2025224600A1 (en) * 2024-04-21 2025-10-30 Biohaven Therapeutics Ltd. Treatment of alpha-synucleinopathies and neuroprotection
WO2025248468A1 (en) 2024-05-28 2025-12-04 Biohaven Therapeutics Ltd. Use of tyk2/jak1 inhibitors to treat amyloid-related imaging abnormalities (aria)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014071031A1 (en) * 2012-11-01 2014-05-08 Incyte Corporation Tricyclic fused thiophene derivatives as jak inhibitors

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4369172A (en) 1981-12-18 1983-01-18 Forest Laboratories Inc. Prolonged release therapeutic compositions based on hydroxypropylmethylcellulose
EP0188040B1 (en) 1985-01-11 1991-08-14 Abbott Laboratories Limited Slow release solid preparation
JP2773959B2 (ja) 1990-07-10 1998-07-09 信越化学工業株式会社 大腸内放出性固形製剤
UA73092C2 (uk) 1998-07-17 2005-06-15 Брістол-Майерс Сквібб Компані Таблетка з ентеросолюбільним покриттям і спосіб її приготування
ATE292961T1 (de) 1998-07-28 2005-04-15 Tanabe Seiyaku Co Zur wirkstoffabgabe an zielorten im darm fähige zubereitung
JP2000119271A (ja) 1998-08-12 2000-04-25 Hokuriku Seiyaku Co Ltd 1h―イミダゾピリジン誘導体
US6461631B1 (en) 1999-11-16 2002-10-08 Atrix Laboratories, Inc. Biodegradable polymer composition
US6800663B2 (en) 2002-10-18 2004-10-05 Alkermes Controlled Therapeutics Inc. Ii, Crosslinked hydrogel copolymers
JP2007526324A (ja) 2004-03-02 2007-09-13 スミスクライン・ビーチャム・コーポレイション Akt活性のある阻害剤
CN101277965A (zh) * 2005-08-04 2008-10-01 西特里斯药业公司 作为SIRTUIN调节化合物的咪唑并[2,1-b]噻唑衍生物
CN102741253A (zh) * 2009-09-29 2012-10-17 艾科睿控股公司 PI3K(δ)选择性抑制剂
WO2012022045A1 (en) * 2010-08-20 2012-02-23 Hutchison Medipharma Limited Pyrrolopyrimidine compounds and uses thereof
PH12013500661A1 (en) * 2010-10-08 2017-08-23 Abbvie Inc FURO[3,2-d]PYRIMIDINE COMPOUNDS
WO2013007768A1 (en) 2011-07-13 2013-01-17 F. Hoffmann-La Roche Ag Tricyclic heterocyclic compounds, compositions and methods of use thereof as jak inhibitors
PH12013502670A1 (en) 2011-08-12 2016-07-29 Nissan Chemical Ind Ltd Tricyclic heterocyclic compounds and jak inhibitors
CA2926361A1 (en) 2013-10-24 2015-04-30 Abbvie Inc. Jak1 selective inhibitor and uses thereof
PE20170300A1 (es) 2014-04-30 2017-04-19 Incyte Corp Procesos para preparar un inhibidor de jak 1 y nuevas formas de este
WO2015184305A1 (en) 2014-05-30 2015-12-03 Incyte Corporation TREATMENT OF CHRONIC NEUTROPHILIC LEUKEMIA (CNL) AND ATYPICAL CHRONIC MYELOID LEUKEMIA (aCML) BY INHIBITORS OF JAK1
RS62695B1 (sr) 2016-10-03 2022-01-31 Highlightll Pharmaceutical Hainan Co Ltd Novi jak1 selektivni inhibitori i njihove upotrebe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014071031A1 (en) * 2012-11-01 2014-05-08 Incyte Corporation Tricyclic fused thiophene derivatives as jak inhibitors

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IL291267B1 (en) 2023-01-01
MX2019003649A (es) 2019-08-14
CN113214278A (zh) 2021-08-06
USRE49834E1 (en) 2024-02-13
CN108366994A (zh) 2018-08-03
WO2018067422A1 (en) 2018-04-12
IL291267A (en) 2022-05-01
PT3509591T (pt) 2021-12-27
IL265358B (en) 2022-04-01
AU2017339417B2 (en) 2021-11-18
JP2019537559A (ja) 2019-12-26
EP3509591B1 (en) 2021-11-17
HRP20211965T1 (hr) 2022-03-18
JP7089141B2 (ja) 2022-06-22
RS62695B1 (sr) 2022-01-31
HK1253040A1 (zh) 2019-06-06
CN113214278B (zh) 2022-10-28
IL291267B2 (en) 2023-05-01
AU2022201058A1 (en) 2022-03-10
EP3509591A4 (en) 2020-03-25
IL291265B2 (en) 2023-05-01
BR112019005969A2 (pt) 2019-06-18
AU2022201061B2 (en) 2023-03-16
IL265358A (en) 2019-05-30
MX390005B (es) 2025-03-20
EA201990523A1 (ru) 2019-10-31
CA3039178A1 (en) 2018-04-12
AU2022201061A1 (en) 2022-03-10
US10738060B2 (en) 2020-08-11
PL3509591T3 (pl) 2022-01-31
AU2017339417A1 (en) 2019-03-28
AU2017339417C1 (en) 2022-06-02
NZ751284A (en) 2022-09-30
AU2022201058B2 (en) 2023-03-16
ES2901216T3 (es) 2022-03-21
HUE058120T2 (hu) 2022-07-28
EP3509591A1 (en) 2019-07-17
DK3509591T3 (da) 2021-12-20
KR102399848B1 (ko) 2022-05-19
IL291265A (en) 2022-05-01
IL291265B1 (en) 2023-01-01
KR20190057069A (ko) 2019-05-27
US20190256523A1 (en) 2019-08-22

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