Structure-Guided Evolution of Potent and Selective CHK1 Inhibitors through Scaffold Morphing
摘要:
Pyrazolopyridine inhibitors with low micromolar potency for CHK1 and good selectivity against CHK2 were previously identified by fragment-based screening. The optimization of the pyrazolopyridines to a series of potent and CHK1-selective isoquinolines demonstrates how fragment-growing and scaffold morphing strategies arising from a structure-based understanding of CHK1 inhibitor binding can be combined to successfully progress fragment-derived hit matter to compounds with activity in vivo. The challenges of improving CHK1 potency and selectivity, addressing synthetic tractability, and achieving novelty in the crowded kinase inhibitor chemical space were tackled by multiple scaffold morphing steps, which progressed through tricyclic pyrimido[2,3-b]azaindoles to N-(pyrazin-2-yl)pyrimidin-4-amines and ultimately to imidazo[4,5-c]pyridines and isoquinolines. A potent and highly selective isoquinoline CHK1 inhibitor (SAR-020106) was identified, which potentiated the efficacies of irinotecan and gemcitabine in SW620 human colon carcinoma xenografts in nude mice.
[EN] 9H-PYRIMIDO[4,5-B]INDOLES, 9H-PYRIDO[4',3':4,5]PYRROLO[2,3-D]PYRIDINES, AND 9H-1,3,6,9-TETRAAZA-FLUORENES AS CHK1 KINASE FUNCTION INHIBITORS<br/>[FR] 9H-PYRIMIDO[4,5-B]INDOLES, 9H-PYRIDO[4',3':4,5]PYRROLO[2,3-D]PYRIDINES, ET 9H-1,3,6,9-TÉTRAAZA-FLUORÈNES EN TANT QU'INHIBITEURS DE LA FONCTION KINASE CHK1
申请人:CANCER REC TECH LTD
公开号:WO2009004329A1
公开(公告)日:2009-01-08
The present invention pertains generally to the field of therapeutic compounds, and more specifically to certain tricyclic compounds (referred to herein as TC compounds), and especially certain 9H-pyrimido[4,5-b]indole, 9H-pyrido[4',3':4,5]pyrrolo[2,3-d)pyridine, and 9H-1,3,6,9-tetraaza-fluorene compounds, which, inter alia, inhibit Checkpoint Kinase 1 (CHK1) kinase function. The present invention also pertains to pharmaceutical compositions comprising such compounds, and the use of such compounds and compositions, both in vitro and in vivo, to inhibit CHK1 kinase function, and in the treatment of diseases and conditions that are mediated by CHK1, that are ameliorated by the inhibition of CHK1 kinase function, etc., including proliferative conditions such as cancer, etc., optionally in combination with another agent, for example, (a) a DNA topoisomerase I or Il inhibitor; (b) a DNA damaging agent; (c) an antimetabolite or TS inhibitor; (d) a microtubule targeted agent; and (e) ionising radiation.
9H-PYRIMIDO[4,5-B]INDOLES, 9H-PYRIDO[4',3':4,5]PYRROLO[2,3-D]PYRIDINES, AND 9H 1,3,6,9 TETRAAZA-FLUORENES AS CHK1 KINASE FUNCTION INHIBITORS
申请人:Collins Ian
公开号:US20100210639A1
公开(公告)日:2010-08-19
The present invention pertains generally to the field of therapeutic compounds, and more specifically to certain tricyclic compounds (referred to herein as TC compounds), and especially certain 9H-pyrimido[4,5-b]indole, 9H-pyrido[4′,3′:4,5]pyrrolo[2,3-d]pyridine, and 9H-1,3,6,9-tetraaza-fluorene compounds, which, inter alia, inhibit Checkpoint Kinase 1 (CHK1) kinase function. The present invention also pertains to pharmaceutical compositions comprising such compounds, and the use of such compounds and compositions, both in vitro and in vivo, to inhibit CHK1 kinase function, and in the treatment of diseases and conditions that are mediated by CHK1, that are ameliorated by the inhibition of CHK1 kinase function, etc., including proliferative conditions such as cancer, etc., optionally in combination with another agent, for example, (a) a DNA topoisomerase I or II inhibitor; (b) a DNA damaging agent; (c) an antimetabolite or TS inhibitor; (d) a microtubule targeted agent; and (e) ionising radiation.