EA202191223A1 - НОВЫЕ 6,7-ДИГИДРО-4Н-ПИРАЗОЛО[1,5-а]ПИРАЗИН-ИНДОЛ-2-КАРБОКСАМИДЫ, АКТИВНЫЕ ПРОТИВ ВИРУСА ГЕПАТИТА B (HBV) - Google Patents

НОВЫЕ 6,7-ДИГИДРО-4Н-ПИРАЗОЛО[1,5-а]ПИРАЗИН-ИНДОЛ-2-КАРБОКСАМИДЫ, АКТИВНЫЕ ПРОТИВ ВИРУСА ГЕПАТИТА B (HBV)

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Publication number
EA202191223A1
EA202191223A1 EA202191223A EA202191223A EA202191223A1 EA 202191223 A1 EA202191223 A1 EA 202191223A1 EA 202191223 A EA202191223 A EA 202191223A EA 202191223 A EA202191223 A EA 202191223A EA 202191223 A1 EA202191223 A1 EA 202191223A1
Authority
EA
Eurasian Patent Office
Prior art keywords
hbv
virus
pyrazolo
indol
pyrazine
Prior art date
Application number
EA202191223A
Other languages
English (en)
Inventor
Аластэр Дональд
Андреас Урбан
Зузанне Бонсманн
Яспер Спрингер
Анита Вегерт
Original Assignee
Айкурис Гмбх Унд Ко. Кг
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.)
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Application filed by Айкурис Гмбх Унд Ко. Кг filed Critical Айкурис Гмбх Унд Ко. Кг
Publication of EA202191223A1 publication Critical patent/EA202191223A1/ru

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    • 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
    • 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
    • A61K31/495—Heterocyclic 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
    • A61K31/4985—Pyrazines or piperazines ortho- or peri-condensed with heterocyclic ring systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/12—Antivirals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/12—Antivirals
    • A61P31/20—Antivirals for DNA viruses
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D519/00—Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups C07D453/00 or C07D455/00

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Virology (AREA)
  • Medicinal Chemistry (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Oncology (AREA)
  • Communicable Diseases (AREA)
  • Molecular Biology (AREA)
  • Biotechnology (AREA)
  • Engineering & Computer Science (AREA)
  • Epidemiology (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

Настоящее изобретение в целом относится к новым противовирусным средствам. В частности, настоящее изобретение относится к соединениям, которые могут ингибировать белок или белки, кодируемые вирусом гепатита B (HBV), или влиять на функцию цикла репликации HBV, к композициям, содержащим такие соединения, способам ингибирования репликации вируса HBV, способам лечения или профилактики инфекции HBV, а также к способам и промежуточным соединениям для получения указанных соединений.
EA202191223A 2018-11-02 2019-11-01 НОВЫЕ 6,7-ДИГИДРО-4Н-ПИРАЗОЛО[1,5-а]ПИРАЗИН-ИНДОЛ-2-КАРБОКСАМИДЫ, АКТИВНЫЕ ПРОТИВ ВИРУСА ГЕПАТИТА B (HBV) EA202191223A1 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18000878 2018-11-02
PCT/EP2019/079969 WO2020089455A1 (en) 2018-11-02 2019-11-01 6,7-dihydro-4h-pyrazolo[1,5-a]pyrazine indole-2-carboxamides active against the hepatitis b virus (hbv)

Publications (1)

Publication Number Publication Date
EA202191223A1 true EA202191223A1 (ru) 2021-07-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EA202191223A EA202191223A1 (ru) 2018-11-02 2019-11-01 НОВЫЕ 6,7-ДИГИДРО-4Н-ПИРАЗОЛО[1,5-а]ПИРАЗИН-ИНДОЛ-2-КАРБОКСАМИДЫ, АКТИВНЫЕ ПРОТИВ ВИРУСА ГЕПАТИТА B (HBV)

Country Status (14)

Country Link
US (1) US20220081444A1 (ru)
EP (1) EP3873910A1 (ru)
JP (1) JP2022506337A (ru)
KR (1) KR20210099563A (ru)
CN (1) CN112996791A (ru)
AR (1) AR117189A1 (ru)
AU (1) AU2019370734A1 (ru)
CA (1) CA3118381A1 (ru)
EA (1) EA202191223A1 (ru)
IL (1) IL282598A (ru)
SG (1) SG11202104116VA (ru)
TW (1) TW202031659A (ru)
UY (1) UY38434A (ru)
WO (1) WO2020089455A1 (ru)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
UY38436A (es) * 2018-11-02 2020-05-29 Aicuris Gmbh & Co Kg Nuevas 6,7-dihidro-4h-pirazolo[1,5-a] pirazinindol-2-carboxamidas activas contra el virus de la hepatitis b (vhb)
CA3169975A1 (en) 2020-02-07 2021-08-12 Gasherbrum Bio, Inc. Heterocyclic glp-1 agonists
AU2021267373A1 (en) 2020-05-06 2022-12-08 Ajax Therapeutics, Inc. 6-heteroaryloxy benzimidazoles and azabenzimidazoles as JAK2 inhibitors
EP4211139A1 (en) * 2020-09-10 2023-07-19 Gasherbrum Bio, Inc. Heterocyclic glp-1 agonists
WO2023009709A1 (en) * 2021-07-29 2023-02-02 Ajax Therapeutics, Inc. Pyrazolo piperazines as jak2 inhibitors
AU2022388555A1 (en) 2021-11-09 2024-05-02 Ajax Therapeutics, Inc. 6-he tero aryloxy benzimidazoles and azabenzimidazoles as jak2 inhibitors
CN115232086B (zh) * 2022-07-19 2024-05-03 扬州市普林斯医药科技有限公司 一种4-苄基-2(3h)-噁唑酮的制备方法

Family Cites Families (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19817264A1 (de) 1998-04-18 1999-10-21 Bayer Ag Neue Dihydropyrimidine
AU4289100A (en) 1999-03-25 2000-10-16 Bayer Aktiengesellschaft Dihydropyrimidines and their use in the treatment of hepatitis
ATE354942T1 (de) 1999-04-23 2006-03-15 Extenday Ip Ltd Foliebefestigungs- und verankerungsteil
AU3009801A (en) 1999-12-22 2001-07-03 Bayer Aktiengesellschaft Combinations of medicaments for treating viral diseases
WO2006033995A2 (en) 2004-09-16 2006-03-30 Valeant Research And Development Thiazolidin-4-ones having anti-hepatitis b activity
WO2009147188A1 (en) 2008-06-05 2009-12-10 Glaxo Group Limited Benzpyrazol derivatives as inhibitors of pi3 kinases
EP2327704A4 (en) * 2008-08-29 2012-05-09 Shionogi & Co RING-CONDENSED AZOL DERIVATIVE WITH PI3K-INHIBITING EFFECT
US8946223B2 (en) * 2010-04-12 2015-02-03 Millennium Pharmaceuticals, Inc. Substituted hydroxamic acids and uses thereof
US8846684B2 (en) * 2011-03-31 2014-09-30 The Regents Of The University Of Michigan Arbovirus inhibitors and uses thereof
JP2014516084A (ja) 2011-06-10 2014-07-07 グラクソスミスクライン、インテレクチュアル、プロパティー、リミテッド 新規化合物
WO2013006394A1 (en) 2011-07-01 2013-01-10 Institute For Hepatitis And Virus Research Sulfamoylbenzamide derivatives as antiviral agents against hbv infection
CA2857344C (en) 2011-12-21 2019-02-12 Novira Therapeutics, Inc. Hepatitis b antiviral agents
EP2800742B1 (en) 2012-01-06 2016-04-06 Janssen Sciences Ireland UC 4,4-disubstituted-1,4-dihydropyrimidines and the use thereof as medicaments for the treatment of hepatitis b
US9096579B2 (en) * 2012-04-20 2015-08-04 Boehringer Ingelheim International Gmbh Amino-indolyl-substituted imidazolyl-pyrimidines and their use as medicaments
SG10201605291WA (en) 2012-08-28 2016-08-30 Janssen Sciences Ireland Uc Sulfamoyl-arylamides and the use thereof as medicaments for the treatment of hepatitis b
ES2610758T3 (es) 2012-08-28 2017-05-03 Janssen Sciences Ireland Uc Derivados de sulfamoílo bicíclicos condensados y su uso como medicamentos en el tratamiento de la hepatitis B
US8993771B2 (en) 2013-03-12 2015-03-31 Novira Therapeutics, Inc. Hepatitis B antiviral agents
TW201446768A (zh) 2013-03-15 2014-12-16 Biogen Idec Inc S1p及/或atx調節劑
WO2014184365A1 (en) 2013-05-17 2014-11-20 Janssen R&D Ireland Sulphamoylthiophenamide derivatives and the use thereof as medicaments for the treatment of hepatitis b
EA201592126A1 (ru) 2013-05-17 2016-05-31 Ф. Хоффманн-Ля Рош Аг 6-мостиковые гетероарилдигидропиримидины для лечения и профилактики заражения вирусом гепатита b
TR201807090T4 (tr) 2013-07-25 2018-06-21 Janssen Sciences Ireland Uc Glioksamid sübstitüeli pirrolamid deriveleri ve bunun hepatitin tedavisine yönelik ilaçlar olarak kullanımı.
ES2739435T3 (es) 2013-10-18 2020-01-31 Univ Indiana Res & Tech Corp Efectores del ensamblaje viral de la hepatitis B
EA201690979A1 (ru) 2013-11-14 2016-08-31 Новира Терапьютикс, Инк. Производные азепана и способы лечения инфекций гепатита в
US9169212B2 (en) 2014-01-16 2015-10-27 Novira Therapeutics, Inc. Azepane derivatives and methods of treating hepatitis B infections
BR112016020566B1 (pt) 2014-03-07 2022-11-29 F. Hoffmann-La Roche Ag Novas heteroaril-diidro-pirimidinas fundidas na posição 6 para o tratamento e profilaxia da infecção pelo vírus da hepatite b
KR102363174B1 (ko) 2014-03-13 2022-02-15 인디애나 유니버시티 리서치 앤드 테크놀로지 코포레이션 B형 간염 코어 단백질 알로스테릭 조정제
KR20160133563A (ko) 2014-03-28 2016-11-22 선샤인 레이크 파르마 컴퍼니 리미티드 다이하이드로피리미딘 화합물 및 이의 약제학적 용도
EP3139954A4 (en) 2014-05-09 2018-02-28 Indiana University Research and Technology Corporation Methods and compositions for treating hepatitis b virus infections
RU2664329C1 (ru) 2014-08-14 2018-08-16 Ф. Хоффманн-Ля Рош Аг Новые пиридазоны и триазиноны для лечения и профилактики заражения вирусом гепатита b
GB201416754D0 (en) 2014-09-23 2014-11-05 Mission Therapeutics Ltd Novel compounds
DK3227262T3 (da) 2014-12-02 2020-08-10 Novira Therapeutics Inc Sulfidalkyl og pyridyl-revers-sulfonamidforbindelser til hbv-behandling
CN107531691A (zh) 2014-12-30 2018-01-02 诺维拉治疗公司 治疗乙型肝炎感染的衍生物和方法
MA41338B1 (fr) 2015-01-16 2019-07-31 Hoffmann La Roche Composés de pyrazine pour le traitement de maladies infectieuses
CA2979490C (en) 2015-03-16 2023-07-18 F. Hoffmann-La Roche Ag Combined treatment with a tlr7 agonist and an hbv capsid assembly inhibitor
US10442788B2 (en) 2015-04-01 2019-10-15 Enanta Pharmaceuticals, Inc. Hepatitis B antiviral agents
WO2016177655A1 (en) 2015-05-04 2016-11-10 F. Hoffmann-La Roche Ag Tetrahydropyridopyrimidines and tetrahydropyridopyridines as inhibitors of hbsag (hbv surface antigen) and hbv dna production for the treatment of hepatitis b virus infections
WO2016183266A1 (en) 2015-05-13 2016-11-17 Enanta Pharmaceuticals, Inc. Ehpatitis b antiviral agents
US10875876B2 (en) 2015-07-02 2020-12-29 Janssen Sciences Ireland Uc Cyclized sulfamoylarylamide derivatives and the use thereof as medicaments for the treatment of hepatitis B
WO2017011552A1 (en) 2015-07-13 2017-01-19 Enanta Pharmaceuticals, Inc. Hepatitis b antiviral agents
CN107849037B (zh) 2015-07-21 2020-04-17 豪夫迈·罗氏有限公司 用于治疗和预防乙型肝炎病毒感染的三环4-吡啶酮-3-甲酸衍生物
WO2017015451A1 (en) 2015-07-22 2017-01-26 Enanta Pharmaceuticals, Inc. Hepatitis b antiviral agents
WO2017040757A1 (en) 2015-09-02 2017-03-09 Nimbus Lakshmi, Inc. Tyk2 inhibitors and uses thereof
TWI730985B (zh) 2015-09-15 2021-06-21 美商艾森伯利生物科學公司 B型肝炎核心蛋白質調節劑
CA3000197A1 (en) 2015-09-29 2017-04-06 Novira Therapeutics, Inc. Crystalline forms of a hepatitis b antiviral agent
CA3004147C (en) 2015-11-04 2019-09-10 Qilu Pharmaceutical Co., Ltd. Crystal form, preparation method and intermediate of dihydropyrido ring compound
WO2017136403A1 (en) 2016-02-02 2017-08-10 Enanta Pharmaceuticals, Inc. Hepatitis b antiviral agents
CA3017020C (en) 2016-03-07 2024-01-16 Enanta Pharmaceuticals, Inc. Hepatitis b antiviral agents
JP6957518B2 (ja) 2016-05-20 2021-11-02 エフ．ホフマン−ラ ロシュ アーゲーＦ． Ｈｏｆｆｍａｎｎ−Ｌａ Ｒｏｃｈｅ Ａｋｔｉｅｎｇｅｓｅｌｌｓｃｈａｆｔ 感染症の治療のための酸素、硫黄および窒素リンカーを有する新規ピラジン化合物
EP3484886B1 (en) 2016-07-14 2020-03-04 Hoffmann-La Roche AG 6,7-dihydro-4h-pyrazolo[1,5-a]pyrazine and 6,7-dihydro-4h-triazolo[1,5-a]pyrazine compounds for the treatment of infectious diseases
WO2018011160A1 (en) * 2016-07-14 2018-01-18 F. Hoffmann-La Roche Ag 6,7-dihydro-4h-pyrazolo[1,5-a]pyrazine compounds for the treatment of infectious diseases
CN109415368B (zh) 2016-07-14 2021-04-30 豪夫迈·罗氏有限公司 用于治疗感染性疾病的羧基6,7-二氢-4H-吡唑并[1,5-a]吡嗪化合物
JOP20190024A1 (ar) 2016-08-26 2019-02-19 Gilead Sciences Inc مركبات بيروليزين بها استبدال واستخداماتها
CA3036245C (en) 2016-09-13 2021-07-20 Arbutus Biopharma Corporation Substituted chromane-8-carboxamide compounds and analogues thereof, and methods using same
MX2019010404A (es) 2017-03-02 2019-11-21 Assembly Biosciences Inc Compuestos sulfamida cíclicos y métodos de uso de los mismos.
MA49014A (fr) 2017-03-21 2020-02-05 Arbutus Biopharma Corp Dihydroindène-4-carboxamides substitués, leurs analogues et procédés d'utilisation correspondant
AR113826A1 (es) * 2017-11-02 2020-06-17 Aicuris Gmbh & Co Kg Indol-2-carboxamidas sustituidas con amino-tiazol activas contra el virus de la hepatitis b (vhb)
CA3081399A1 (en) * 2017-11-02 2019-05-09 Aicuris Gmbh & Co. Kg Novel, highly active pyrazolo-piperidine substituted indole-2-carboxamides active against the hepatitis b virus (hbv)
EP3759110A1 (en) * 2018-02-28 2021-01-06 Novartis AG Indole-2-carbonyl compounds and their use for the treatment of hepatitis b
AR117188A1 (es) * 2018-11-02 2021-07-21 Aicuris Gmbh & Co Kg Derivados de urea 6,7-dihidro-4h-pirazolo[1,5-a]pirazinas activas contra el virus de la hepatitis b (vhb)
AR116948A1 (es) * 2018-11-02 2021-06-30 Aicuris Gmbh & Co Kg Derivados de urea 6,7-dihidro-4h-pirazolo[1,5-a]pirazinas activas contra el virus de la hepatitis b (vhb)
UY38436A (es) * 2018-11-02 2020-05-29 Aicuris Gmbh & Co Kg Nuevas 6,7-dihidro-4h-pirazolo[1,5-a] pirazinindol-2-carboxamidas activas contra el virus de la hepatitis b (vhb)

Also Published As

Publication number Publication date
JP2022506337A (ja) 2022-01-17
US20220081444A1 (en) 2022-03-17
SG11202104116VA (en) 2021-05-28
AR117189A1 (es) 2021-07-21
WO2020089455A1 (en) 2020-05-07
EP3873910A1 (en) 2021-09-08
UY38434A (es) 2020-05-29
CN112996791A (zh) 2021-06-18
KR20210099563A (ko) 2021-08-12
IL282598A (en) 2021-06-30
CA3118381A1 (en) 2020-05-07
TW202031659A (zh) 2020-09-01
AU2019370734A1 (en) 2021-05-27

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