(2S,3R)-3-(3,4-Difluorophenyl)-2-(4-fluorophenyl)-4-hydroxy-N-((3S)-2-oxo-5-phenyl-2,3-1H-benzo[e][1,4]diazepin-3-yl)butyramide

CHMFL-ABL/KIT-155 (CHMFL-ABL-KIT-155; compound 34) is a highly potent and orally active type II ABL/c-KIT dual kinase inhibitor (IC50s of 46 nM and 75 nM, respectively), and it also presents significant inhibitory activities to BLK (IC50=81 nM), CSF1R (IC50=227 nM), DDR1 (IC50=116 nM), DDR2 (IC50=325 nM), LCK (IC50=12 nM) and PDGFRβ (IC50=80 nM) kinases. CHMFL-ABL/KIT-155 (CHMFL-ABL-KIT-155) arrests cell cycle progression and induces apoptosis[1]. IC50: 46 nM (type II ABL), 75 nM (c-KIT), 81 nM (BLK), 227 nM (CSF1R), 116 nM (DDR1), 325 nM (DDR2), 12 nM (LCK), 80 nM (PDGFRβ)[1]

CHMFL-ABL/KIT-155 (CHMFL-ABL-KIT-155) exhibits anti-proliferation activities in the BCR-ABL dependent CML cancer cell lines such as K562 (GI50: 0.027 µM), MEG-01 (GI50: 0.02 µM), and KU812 (GI50: 0.056 µM). It also potently inhibits the growth of c-KIT dependent GISTs cancer cell lines including GIST-T1 (GI50: 0.023 µM), GIST-882 (GI50: 0.095 µM) but not c-KIT independent GIST-48B (GI50: 3.96 µM) [1].

CHMFL-ABL/KIT-155 (CHMFL-ABL-KIT-155) (25-100 mg/kg; p.o.; once daily for 28 days) shows dose-dependent tumor progression suppression without apparent toxicity in female nu/nu mice bearing established K562 tumor xenografts[1].

[1]. Wang Q, et al. Discovery of 4-Methyl-N-(4-((4-methylpiperazin-1-yl)methyl)-3-(trifluoromethyl)phenyl)-3-((1-nicotinoylpiperidin-4-yl)oxy)benzamide (CHMFL-ABL/KIT-155) as a Novel Highly Potent Type II ABL/KIT Dual Kinase Inhibitor with a Distinct Hinge Binding. J Med Chem. 2017 Jan 12;60(1):273-289.