[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。