Synthesis and structure–activity relationships of N-6 substituted analogues of 9-hydroxy-4-phenylpyrrolo[3,4-c]carbazole-1,3(2H,6H)-diones as inhibitors of Wee1 and Chk1 checkpoint kinases
摘要:
A series of N-6 substituted 9-hydroxy-4-phenylpyrrolo[3,4-c]carbazole-1,3(2H,6H)-diones were prepared from N-substituted (5-methoxyphenyl)ethenylindoles. The target compounds were tested for their ability to inhibit the G2/M cell cycle checkpoint kinases, Wee1 and Chk1. Analogues with neutral or cationic N-6 side chains were potent dual inhibitors. Acidic side chains provided potent (average IC(50) 0.057 microM) and selective (average ratio 223-fold) Wee1 inhibition. Co-crystal structures of inhibitors bound to Wee1 show that the pyrrolo[3,4-c]carbazole scaffold binds in the ATP-binding site, with N-6 substituents involved in H-bonding to conserved water molecules. HT-29 cells treated with doxorubicin and then target compounds demonstrate an active Cdc2/cyclin B complex, inhibition of the doxorubicin-induced phosphorylation of tyrosine 15 of Cdc2 and abrogation of the G2 checkpoint.
[EN] INHIBITORS OF CHECKPOINT KINASES (WEE1 AND CHK1)<br/>[FR] INHIBITEURS DE CHECKPOINT KINASES (WEE1 ET CHK1)
申请人:WARNER LAMBERT CO
公开号:WO2003091255A1
公开(公告)日:2003-11-06
This invention relates to pyrrolocarbazole derivatives according formula (I) wherein R1, R2, r7, R8 R9, X and Y are as defined in the specification wherein said derivatives specifically inhibit one or both of the checkpoint kinases Wee1 and Chk1.
Provided is a pharmaceutical composition comprising a Cdc7 inhibitor and an M phase promoter. In particular, the Cdc7 inhibitor contained in the pharmaceutical composition is a furanone derivative represented by formula (I), or a pharmaceutically acceptable salt thereof. (In the formula, A is -COOR1 or a hydrogen atom; R1 is a hydrogen atom, an optionally substituted hydrocarbon group, or an optionally substituted heterocycle; R2 and R3 are the same or different and are each a hydrogen atom, an optionally substituted hydrocarbon group, an optionally substituted phenyl group, an optionally substituted heterocycle, an optionally substituted heterocyclic condensed ring, or an optionally substituted amino group. Alternatively, R2 and R3 may, together with the nitrogen atoms bonding the same, form an optionally substituted heterocycle or optionally substituted heterocyclic condensed ring. R4 is a hydrogen atom or halogen atom. However, if A is -COOR1, R2 and R3 are not both simultaneously optionally substituted amino groups. When A is a hydrogen atom, R3 is a hydrogen atom.)
本发明提供了一种药物组合物,其中包含一种 Cdc7 抑制剂和一种 M 期促进剂。特别是,药物组合物中所含的 Cdc7 抑制剂是由式(I)表示的呋喃酮衍生物或其药学上可接受的盐。(式中,A为-COOR1或氢原子;R1为氢原子、任选取代的烃基或任选取代的杂环;R2和R3相同或不同,各自为氢原子、任选取代的烃基、任选取代的苯基、任选取代的杂环、任选取代的杂环缩合环或任选取代的氨基。或者,R2 和 R3 可与结合在一起的氮原子一起形成任选取代的杂环或任选取代的杂环缩合环。R4 是氢原子或卤素原子。但是,如果 A 是-COOR1,R2 和 R3 不能同时是任选取代的氨基。当 A 为氢原子时,R3 为氢原子)。
INHIBITORS OF CHECKPOINT KINASES (WEE1 AND CHK1)
申请人:WARNER-LAMBERT COMPANY LLC
公开号:EP1501831A1
公开(公告)日:2005-02-02
ANTICANCER AGENT COMPOSITION COMPRISING A CDC7 INHIBITOR AND A WEE1 INHIBITOR