A series of N-mustard-quinazoline conjugates was synthesized and subjected to antitumor studies. The N-mustard pharmacophore was attached at the C-6 of the 4-anilinoquinazolines via a urea linker. To study the structure-activity relationships of these conjugates, various substituents were introduced to the C-4 anilino moiety. The preliminary antitumor studies revealed that these agents exhibited significant antitumor activity in inhibiting various human tumor cell growths in vitro. Compounds 21b, 21g, and 21h were selected for further antitumor activity evaluation against human breast carcinoma MX-1 and prostate PC-3 xenograft in animal model. These agents showed 54-75% tumor suppression with low toxicity (5-7% body-weight changes). We also demonstrate that the newly synthesized compounds are able to induce DNA cross-linking through alkaline agarose gel shift assay and inhibited cell cycle arrest at G2/M phase. (C) 2011 Elsevier Ltd. All rights reserved.
4-Arylamino-6-nitroquinazolines: Synthesis and their activities against neglected disease leishmaniasis
作者:Syed Muhammad Saad、Nida Ghouri、Shahnaz Perveen、Khalid Mohammed Khan、M. Iqbal Choudhary
DOI:10.1016/j.ejmech.2015.11.016
日期:2016.1
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.