Toward discovery of mutant EGFR inhibitors; Design, synthesis and in vitro biological evaluation of potent 4-arylamino-6-ureido and thioureido-quinazoline derivatives.

Abstract:

:A new series of 4-anilinoquinazolines with C-6 ureido and thioureido side chains and various substituents at the C-4 anilino moiety was designed, synthesized and evaluated as wild type (WT) and mutant EGFR inhibitors. Most of the compounds inhibited EGFR kinase wild type (EGFR WT) with IC50 values in the low nanomolar range (<0.495-9.05nM) and displayed more potent cytotoxic effect in BaF/3 expressing EGFR WT than reference compound gefitinib. The anti-proliferative effect of all synthesized compounds against gefitinib insensitive double mutant cell lines Ba/F3 expressing Del19/T790M and Ba/F3 expressing L858R/T790M were assayed. Compounds 4d, 6f, 7e showed significant inhibition (IC50=1.76-2.38μM) in these mutant lines and significant Her2 enzyme inhibition (IC50=19.2-40.6nM) compared to lapatinib (60.1nM). The Binding mode of compounds 6d, 6f, 7a, 7b and 8b were demonstrated. Furthermore, growth inhibition against gefitinib insensitive cell lines PC9-GR4 (Del19/T790M) were tested, compounds 6f and 7e showed about eight and three folds respectively greater potency than gefitinib. Our structure-activity relationships (SAR) studies suggested that presence of ethyl piperidino urea/thiourea at 6-position and bulky group of (3-chloro-4-(3-fluorobenzyloxy)phenyl)amino at 4-position of quinazoline may serve as promising scaffold for developing inhibitors against wild type and mutant EGFR.

journal_name

Bioorg Med Chem

authors

Mowafy S,Galanis A,Doctor ZM,Paranal RM,Lasheen DS,Farag NA,Jänne PA,Abouzid KA

doi

10.1016/j.bmc.2016.05.063

subject

Has Abstract

pub_date

2016-08-15 00:00:00

pages

3501-12

issue

16

eissn

0968-0896

issn

1464-3391

pii

S0968-0896(16)30407-2

journal_volume

24

pub_type

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