Design and synthesis of anti-breast cancer agents from 4-piperazinylquinoline: A hybrid pharmacophore approach
摘要:
A novel class of 4-piperazinylquinoline derivatives based on the isatin scaffold were designed by molecular hybridization approach and synthesized for biological evaluation. Subsequently, the compounds were examined for their cytotoxic effects on two human breast tumor cell lines, MDA-MB468 and MCF7, and two non-cancer breast epithelial cell lines, 184B5 and MCF10A. Although all compounds examined were quite effective on the breast cancer cell lines examined, the compound 4-bromo-1-[4(7-chloro-quinolin-4-yl)-piperazin-1-ylmethyl]-1H-indole-2,3-dione (5b) and N-1-[4-(7-trifluoromethylquinolin4-yl)]-piperazin-1-ylmethyl-4-chloro-1H-indole-2,3-dione-3-thiosemicarbazone (8a) emerged as the most active among this series. It appeared that both 5b and 8a caused apoptosis to MCF7 cancer cells, but not MCF10A non-cancer cells. Thus, 4-piperazinylquinoline linked isatin analog can serve as the prototype molecule for further development of a new class of anti-breast cancer agents. (C) 2010 Elsevier Ltd. All rights reserved.
Design, synthesis and anti-plasmodial evaluation in vitro of new 4-aminoquinoline isatin derivatives
摘要:
A new class of 4-aminoquinoline derivatives based on the natural product isatin scaffold were designed and synthesized for biological evaluation against three strains of the malaria parasite Plasmodium falciparum. These derivatives showed anti-plasmodial IC50 values in the ranges of 1.3-0.079 and 2.0-0.050 mu M against a chloroquine-sensitive (D10) and two resistant (K1 and W2) strains of P. falciparum, respectively. In order to determine potential targets for this class of compounds in P. falciparum, selected compounds were also tested against the parasitic cysteine protease falcipain-2. In terms of further development of this class of isatin derivatives, two of the compounds based on a flexible alkyl chain linker and a thiosemicarbazone moiety warrant further investigation as potential anti-plasmodial leads. These two derivatives showed good in vitro activity against K1 and W2 with IC50 values of 51 and 54 nM, respectively, while retaining potency against the D10 strain with IC50 values of 79 and 95 nM, respectively. Generally speaking, the inhibitory potency of all compounds in the series against the parasites did not strongly correlate with inhibitory potency against falcipain-2 for selected compounds tested, which at best was weak to moderate, suggesting other mechanisms of inhibition may also be involved or compounds may be selectively taken up by Plasmodium falciparum. (c) 2005 Elsevier Ltd. All rights reserved.
New N-Mannich bases obtained from isatin and piperazine derivatives: the synthesis and evaluation of antimicrobial activity
作者:Andrei V. Bogdanov、Al’bina M. Vazykhova、Nadezhda R. Khasiyatullina、Dmitry B. Krivolapov、Alexey B. Dobrynin、Alexandra D. Voloshina、Vladimir F. Mironov
DOI:10.1007/s10593-016-1826-6
日期:2016.1
A Mannich reaction of isatin with monosubstituted piperazines in the presence of aqueous formaldehyde was used to synthesize new, as well as two previously described derivatives of 1-piperazinomethylisatins, which were further converted to isoindigo derivatives. The antimicrobial activity of the obtained heterocycles was evaluated.