7-(Pyrazol-4-yl)-3H-imidazo[4,5-b]pyridine-based derivatives for kinase inhibition: Co-crystallisation studies with Aurora-A reveal distinct differences in the orientation of the pyrazole N1-substituent
作者:Vassilios Bavetsias、Yolanda Pérez-Fuertes、Patrick J. McIntyre、Butrus Atrash、Magda Kosmopoulou、Lisa O’Fee、Rosemary Burke、Chongbo Sun、Amir Faisal、Katherine Bush、Sian Avery、Alan Henley、Florence I. Raynaud、Spiros Linardopoulos、Richard Bayliss、Julian Blagg
DOI:10.1016/j.bmcl.2015.08.003
日期:2015.10
Introduction of a 1-benzyl-1H-pyrazol-4-yl moiety at C7 of the imidazo[4,5-b]pyridine scaffold provided 7a which inhibited a range of kinases including Aurora-A. Modification of the benzyl group in 7a, and subsequent co-crystallisation of the resulting analogues with Aurora-A indicated distinct differences in binding mode dependent upon the pyrazole N-substituent. Compounds 7a and 14d interact with the P-loop whereas 14a and 14b engage with Thr217 in the post-hinge region. These crystallographic insights provide options for the design of compounds interacting with the DFG motif or with Thr217. (C) 2015 The Authors. Published by Elsevier Ltd.