3-[1-(3-fluoropyridin-2-yl)-1H-pyrazol-4-yl]-N-(piperidin-4-yl)imidazo[1,2-b]pyridazin-6-amine | 1400873-45-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 英文名称: 3-[1-(3-fluoropyridin-2-yl)-1H-pyrazol-4-yl]-N-(piperidin-4-yl)imidazo[1,2-b]pyridazin-6-amine
• 英文别名: 3-[1-(3-fluoropyridin-2-yl)pyrazol-4-yl]-N-piperidin-4-ylimidazo[1,2-b]pyridazin-6-amine
• CAS: 1400873-45-1
• 化学式: C₁₉H₁₉FN₈
• 分子量: 378.412
• InChiKey: SSAZYSXHLAEOAS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.8
• 重原子数：
  28
• 可旋转键数：
  4
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.26
• 拓扑面积：
  85
• 氢给体数：
  2
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  聚合甲醛 、 3-[1-(3-fluoropyridin-2-yl)-1H-pyrazol-4-yl]-N-(piperidin-4-yl)imidazo[1,2-b]pyridazin-6-amine 在 三乙酰氧基硼氢化钠 、 溶剂黄146 作用下， 以 四氢呋喃 为溶剂， 生成 3-[1-(3-fluoropyridin-2-yl)pyrazol-4-yl]-N-(1-methylpiperidin-4-yl)imidazo[1,2-b]pyridazin-6-amine
  参考文献：
  名称：

  Imidazopyridazines as potent inhibitors of Plasmodium falciparum calcium-dependent protein kinase 1 (PfCDPK1): Preparation and evaluation of pyrazole linked analogues

  摘要：

  The structural diversity and SAR in a series of imidazopyridazine inhibitors of Plasmodium falciparum calcium dependent protein kinase 1 (PfCDPK1) has been explored and extended. The opportunity to further improve key ADME parameters by means of lowering log D was identified, and this was achieved by replacement of a six-membered (hetero)aromatic linker with a pyrazole. A short SAR study has delivered key examples with useful in vitro activity and ADME profiles, good selectivity against a human kinase panel and improved levels of lipophilic ligand efficiency. These new analogues thus provide a credible additional route to further development of the series. (C) 2013 The Authors. Published by Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2013.08.010
• 作为产物：
  描述：

  trans-1,4-Diaminocyclohexane 在 (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride 盐酸 、 4-二甲氨基吡啶 、 caesium carbonate 、 三乙胺 作用下， 以 四氢呋喃 、 1,4-二氧六环 、 甲醇 为溶剂， 反应 68.0h， 生成 3-[1-(3-fluoropyridin-2-yl)-1H-pyrazol-4-yl]-N-(piperidin-4-yl)imidazo[1,2-b]pyridazin-6-amine
  参考文献：
  名称：

  [EN] IMIDAZO [1, 2 - B] PYRIDAZINE DERIVATIVES AS CDPK1 INHIBITORS
  [FR] DÉRIVÉS D'IMIDAZO[1,2-B]PYRIDAZINE COMME INHIBITEURS DE CDPK1

  摘要：

  该发明的第一个方面涉及式(I)的化合物，或其药学上可接受的盐或酯，其中：R1为-(CH2)nNR3R4，-OR5或-(CH2)n-杂环烷基，其中所述的杂环烷基基团可以选择性地由一个或多个R7基团取代；R2选自芳基，杂芳基，融合芳基-杂环烷基和融合杂芳基-杂环烷基，每个基团至少被一个R8基团取代；R3为H或烷基；R4为：(i) 可选择性地由一个或多个-NR11R12或NHCOR11基团取代的环烷基；或(ii) -(CH2)n-杂环烷基，其中所述的杂环烷基是一个含氮的4、5或6元环基团，可选择性地含有一个或多个CO基团，其中所述的杂环烷基可以选择性地由一个或多个(CH2)nR7基团取代；或(iii) 可选择性地由一个或多个-NR11R12基团取代的烷基；或R3和R4与它们连接到的氮原子结合在一起形成一个4、5、6或7元单环杂环烷基基团或一个双环杂环基团，每个基团可选择性地含有一个或两个进一步选择自CO、O、N和S的基团，并且可选择性地进一步由一个或多个R7基团取代；R5选自烷基，-(CH2)n-杂芳基和-(CH2)n-杂环烷基，其中所述的杂芳基和杂环烷基基团可以选择性地由一个或多个R7基团取代；每个R8独立地选自-NR16R17，-OR17和-(CH2)nR17，其中每个R16为H，每个R17独立地为-(CHR10)n-杂芳基，其中所述的杂芳基基团又可选择性地由一个或多个R7基团取代；每个R10、R11和R12独立地为H或烷基；或在-NR11R12基团的情况下，R11和R12可以与它们连接到的氮原子结合在一起形成一个4、5、6或7元单环或双环杂环烷基基团，可选择性地含有一个或两个进一步选择自CO、O、N和S的基团，并且可选择性地进一步由一个或多个R7基团取代；每个m独立地为1到6的整数；每个n独立地为0到6的整数。进一步方面涉及所述化合物在治疗各种治疗性疾病中的应用，特别是作为PfCDPK1的抑制剂。

  公开号：

  WO2012127212A1

文献信息

• [EN] IMIDAZO [1, 2 - B] PYRIDAZINE DERIVATIVES AS CDPK1 INHIBITORS<br/>[FR] DÉRIVÉS D'IMIDAZO[1,2-B]PYRIDAZINE COMME INHIBITEURS DE CDPK1
  申请人：MEDICAL RES COUNCIL TECHNOLOGY

  公开号：WO2012127212A1

  公开（公告）日：2012-09-27

  A first aspect of the invention relates to a compound of formula (I), or a pharmaceutically acceptable salt or ester thereof, (Formula (I)) wherein: R1 is -(CH2)nNR3R4, -OR5 or -(CH2)n-heterocycloalkyl, wherein said heterocycloalkyl group is optionally substituted by one or more R7 groups; R2 is selected from aryl, heteroaryl, fused aryl-heterocycloalkyl and fused hetero aryl-heterocycloalkyl each of which is substituted by at least one R8 group; R3 is H or alkyl; R4 is: (i) cycloalkyl optionally substituted by one or more -NR11R12 or NHCOR11 groups; or (ii) -(CH2)n-heterocycloalkyl, wherein said heterocycloalkyl is a 4, 5 or 6-membered nitrogen-containing group optionally containing one or more CO groups, wherein said heterocycloalkyl is optionally substituted by one or more one or more (CH2)nR7 groups; or (iii) alkyl substituted by one or more -NR11R12groups; or R3 and R4 are linked together with the nitrogen to which they are attached to form a 4, 5, 6 or 7-membered monocyclic heterocycloalkyl group or a bicyclic heterocyclic group, each of which optionally contains one or two further groups selected from CO, O, N and S, and which is optionally further substituted by one or more R7 groups; R5 is selected from alkyl, -(CH2)n-heteroaryl and - (CH2)n-heterocycloalkyl, wherein said heteroaryl and heterocycloalkyl groups are each optionally substituted by one or more R7 groups; each R8 is independently selected from - NR16R17, -OR17 and -(CH2)nR17 where each R16 is H and each R17 is independently - (CHR10)n-heteroaryl, wherein said heteroaryl group is in turn optionally substituted by one or more R7 groups; each R10, R11 and R12 is independently H or alkyl; or in the case of an - NR11R12 group, R11 and R12 may be linked together with the nitrogen to which they are attached to form a 4, 5, 6 or 7-membered monocyclic or bicyclic heterocycloalkyl group optionally containing one or two further groups selected from CO, O, N and S, and which is optionally further substituted by one or more R7 groups; each m is independently an integer from 1 to 6; and each n is independently an integer from 0 to 6. Further aspects relate to the use of said compounds in the treatment of various therapeutic disorders, and more particularly as inhibitors of PfCDPK1.

  该发明的第一个方面涉及式(I)的化合物，或其药学上可接受的盐或酯，其中：R1为-(CH2)nNR3R4，-OR5或-(CH2)n-杂环烷基，其中所述的杂环烷基基团可以选择性地由一个或多个R7基团取代；R2选自芳基，杂芳基，融合芳基-杂环烷基和融合杂芳基-杂环烷基，每个基团至少被一个R8基团取代；R3为H或烷基；R4为：(i) 可选择性地由一个或多个-NR11R12或NHCOR11基团取代的环烷基；或(ii) -(CH2)n-杂环烷基，其中所述的杂环烷基是一个含氮的4、5或6元环基团，可选择性地含有一个或多个CO基团，其中所述的杂环烷基可以选择性地由一个或多个(CH2)nR7基团取代；或(iii) 可选择性地由一个或多个-NR11R12基团取代的烷基；或R3和R4与它们连接到的氮原子结合在一起形成一个4、5、6或7元单环杂环烷基基团或一个双环杂环基团，每个基团可选择性地含有一个或两个进一步选择自CO、O、N和S的基团，并且可选择性地进一步由一个或多个R7基团取代；R5选自烷基，-(CH2)n-杂芳基和-(CH2)n-杂环烷基，其中所述的杂芳基和杂环烷基基团可以选择性地由一个或多个R7基团取代；每个R8独立地选自-NR16R17，-OR17和-(CH2)nR17，其中每个R16为H，每个R17独立地为-(CHR10)n-杂芳基，其中所述的杂芳基基团又可选择性地由一个或多个R7基团取代；每个R10、R11和R12独立地为H或烷基；或在-NR11R12基团的情况下，R11和R12可以与它们连接到的氮原子结合在一起形成一个4、5、6或7元单环或双环杂环烷基基团，可选择性地含有一个或两个进一步选择自CO、O、N和S的基团，并且可选择性地进一步由一个或多个R7基团取代；每个m独立地为1到6的整数；每个n独立地为0到6的整数。进一步方面涉及所述化合物在治疗各种治疗性疾病中的应用，特别是作为PfCDPK1的抑制剂。
• Imidazopyridazines as potent inhibitors of Plasmodium falciparum calcium-dependent protein kinase 1 (PfCDPK1): Preparation and evaluation of pyrazole linked analogues
  作者：Jonathan M. Large、Simon A. Osborne、Ela Smiljanic-Hurley、Keith H. Ansell、Hayley M. Jones、Debra L. Taylor、Barbara Clough、Judith L. Green、Anthony A. Holder

  DOI：10.1016/j.bmcl.2013.08.010

  日期：2013.11

  The structural diversity and SAR in a series of imidazopyridazine inhibitors of Plasmodium falciparum calcium dependent protein kinase 1 (PfCDPK1) has been explored and extended. The opportunity to further improve key ADME parameters by means of lowering log D was identified, and this was achieved by replacement of a six-membered (hetero)aromatic linker with a pyrazole. A short SAR study has delivered key examples with useful in vitro activity and ADME profiles, good selectivity against a human kinase panel and improved levels of lipophilic ligand efficiency. These new analogues thus provide a credible additional route to further development of the series. (C) 2013 The Authors. Published by Elsevier Ltd. All rights reserved.