Pyrimidine non-nucleoside analogs: A direct synthesis of a novel class of <i>N</i>-substituted amino and <i>N</i>-sulfonamide derivatives of pyrimidines
作者:Galal H. Elgemeie、Ali M. Salah、Nermeen S. Abbas、Hoda A. Hussein、Reham A. Mohamed
DOI:10.1080/15257770.2016.1257808
日期:2017.3.4
ABSTRACT A convenient method for the regioselective synthesis of pyrimidine non-nucleoside analogs was developed. This study reports a novel and efficient method for the synthesis of a new type of N-substitutedamino methylsulfanylpyrimidines and the corresponding pyrazolo[3,4-d]pyrimidines. This series of compounds was designed through the reaction of dimethyl N-cyanodithioiminocarbonate with 2-cyano-N′-(thiophen-2-yl-
Anticancer activity of new coumarin substituted hydrazide–hydrazone derivatives
作者:Tamer Nasr、Samir Bondock、Mahmoud Youns
DOI:10.1016/j.ejmech.2014.02.026
日期:2014.4
Drug resistance is a major impediment for cancer treatment, to overcome it we designed and synthesized sixteen coumarins bearing hydrazide-hydrazone moiety and evaluated them against human drug-resistant pancreatic carcinoma (Panc-1) cells and drug-sensitive (hepatic carcinoma; Hep-G2 and leukemia; CCRF) cell lines in vitro. The 6-brominated coumarin hydrazide-hydrazone derivatives (BCHHD) 7c, 8c and 10c were more potent than doxorubicin (DOX) against resistant Panc-1 cells. BCHHD 7c showed significant cytotoxicity against all tested cells (IC50: 3.60-6.50 mu M) on comparison with all other coumarin hydrazide-hydrazone derivatives (CHHD), whereas BCHHD's 8c and 10c showed significant antiproliferative activity only against resistant Panc-1 cells with IC50 of 2.02 mu M and 2.15 mu M, respectively. All the investigated BCHHD's were able to activate caspases 3/7 and they could induce apoptosis in resistant Panc-1 cells. Microarray analysis showed that BCHHD 7c induced the expression of apoptotic- and cell cycle arrest (G2/M)- genes in resistant Panc-1 cells. Moreover, BCHHD 7c induced the up-regulation of CDKN1A, DDIT4, GDF-15 and down-regulation of CDC2, CDC20, CDK2 genes. Based on our results, we conclude that 7c could be a potent anticancer drug to overcome drug resistance in cancer and it could be highly beneficial for patients in the clinic. (C) 2014 Elsevier Masson SAS. All rights reserved.