Design, synthesis and in vitro anti-proliferative activity of 4,6-quinazolinediamines as potent EGFR-TK inhibitors
摘要:
4-Anilino-6-substituted-quinazolines were designed, synthesized and evaluated for EGFR-TK and tumor growth inhibitory activities. The target compounds were designed with enamine ester or urea moieties appended at the C-6 of quinazoline as additional hydrogen bond acceptor functions. Most of the synthesized compounds displayed potent EGFR-TK inhibitory activity at 10 mu M and the 6-ureido-anilinoquinazoline derivative 7a showed IC50 value of 0.061 mu M. Moreover, six compounds were tested by National Cancer Institute (NCI), USA for their anti-proliferative activity at 10 mu M in full NCI 60 cell panel. Compound 7a was further assayed for five dose molar ranges in full NCI 60 cell panel and exhibited remarkable growth inhibitory activity pattern against Non-Small Cell Lung Cancer EKVX (GI(50) = 037 mu M), NCI-H322M (GI(50) = 0.36 mu M), Renal Cancer A498 (GI(50) = 0.46 mu M), TK-10 (GI(50) = 0.99 mu M) and Breast Cancer MDA-MB-468 (GI(50) = 1.096 mu M) which are of high EGFR expression. Docking study was performed for the active compounds into ATP binding site of EGFR-TK which showed similar binding mode to gefitinib and additional binding with Cys-773 at the gatekeeper of EGFR-TK enzyme. (C) 2012 Elsevier Masson SAS. All rights reserved.
4-Arylamino-6-nitroquinazolines: Synthesis and their activities against neglected disease leishmaniasis
摘要:
4-Arylamino-6-nitroquinazolines (2-25) were synthesized and evaluated for their leishmanicidal activities against Leishmania major promastigotes in vitro with IC50 values = 1.87-61.48 mu M. Among the twenty four synthetic derivatives, 4-[4'-(methylsulfanyl)phenyljamino-6-nitroquinazoline (21), and 4-(2'-methoxyphenyl)amino-6-nitroquinazoline (8) showed excellent antileishmanial activities with IC50 values 1.87 +/- 0.31 and 437 +/- 0.02 mu M, respectively, more active than the standard drug, pentamidine (IC50 = 5.09 +/- 0.09 mu M). Compound 16 (IC50 = 6.53 +/- 0.21 mu M) displayed an activity comparable to the standard. Compounds 15 (IC50 = 9.04 +/- 0.03 mu M), 18 (IC50 = 12.28 +/- 0.18 mu M),14 (IC50 = 19.87 +/- 0.22 mu M), and 5 (IC50 = 24.03 +/- 2.71 mu M) also showed good activities. (C) 2015 Elsevier Masson SAS. All rights reserved.