Design and biological evaluation of substituted 5,7-dihydro-6H-indolo[2,3-c]quinolin-6-one as novel selective Haspin inhibitors

Sreenivas Avula, Xudan Peng, Xingfen Lang, Micky Tortorella, Béatrice Josselin, Stéphane Bach, Stephane Bourg, Pascal Bonnet, Frédéric Buron, Sandrine Ruchaud, Sylvain Routier, Cleopatra Neagoie
A library of substituted indolo[2,3-c]quinolone-6-ones was developed as simplified Lamellarin isosters. Synthesis was achieved from indole after a four-step pathway sequence involving iodination, a Suzuki-Miyaura cross-coupling reaction, and a reduction/lactamization sequence. The inhibitory activity of the 22 novel derivatives was assessed on Haspin kinase. Two of them possessed an IC50 of 1 and 2 nM with selectivity towards a panel of 10 other kinases including the parent kinases DYRK1A and
more » ... K1. The most selective compound exerted additionally a very interesting cell effect on the osteosarcoma U-2 OS cell line.
doi:10.6084/m9.figshare.20012490.v1 fatcat:eab6cgumwfgcxivudare5uzqha