Synthesis, in vitro antiplasmodial activity and cytotoxicity of a series of artemisinin–triazine hybrids and hybrid-dimers
摘要:
A series of artemisinin-triazine hybrids and hybrid-dimers were synthesized and their in vitro antimalarial activity against the chloroquine sensitive (CQS), the gametocytocidal (NF54) and the choroquine resistant (CQR) Dd2 strains of Plasmodium falciparum determined, while their toxicity against CHO cells were also established. These compounds were prepared by linking artemisinin and triazine pharmacophores through nucleophilic substitution, using conventional and microwave assisted methods. These hybrids and hybrid-dimers were all found to be active against all three Plasmodium strains, with the p-anisidino-substituted triazine hybrid-dimer 22 being the most active of all. It showed good anti-gametocytocidal activity against the NF54 strain, with a 50% inhibitory concentration value in the nanomolar range, while having a potency comparable to that of artesunate against the Dd2 strain. This hybrid-dimer further demonstrated selective toxicity towards the parasitic cells. This dimer hence showed the necessary potential as candidate for further investigation in the search for malaria transmission blocking drugs so desperately needed. (C) 2014 Elsevier Masson SAS. All rights reserved.
The invention relates to triazines and the use thereof to inhibit lysophosphatidic acid acyltransferase &bgr; (LPAAT-&bgr;) activity. The invention further relates to methods of treating cancer using said triazines. The invention also relates to methods for screening for LPAAT-&bgr; activity.
The invention relates to triazines and the use thereof to inhibit lysophosphatidic acid acyltransferase β (LPAAT-β) activity. The invention further relates to methods of treating cancer using said triazines. The invention also relates to methods for screening for LPAAT-β activity.
The invention relates to triazines and the use thereof to inhibit lysophosphatidic acid acyltransferase β (LPAAT-β) activity. The invention further relates to methods of treating cancer using said triazines. The invention also relates to methods for screening for LPAAT-β activity.
A series of triaminotriazine derivatives (compounds 5a-f, 6a-x, and 7a-g) was designed, synthesized, and evaluated for their inhibition activities to colorectal cancer (CRC) cell lines (HCT-116 and HT-29). Most of the synthesized compounds demonstrated moderate anti-proliferatory effects on both HCT-116 and HT-29 cell lines at the concentration of 10 mu M. The inhibitory activities against HCT-116 and HT-29 cell lines were discussed to develop the structure-activity relationships of this new series. Compounds 61 and 6o exhibited prominent inhibition activities toward HCT-116, with IC50S of 0.76 and 0.92 mu M, respectively. The in vivo antitumor studies and pharmacokinctics of compound 61 showed that it might be a promising new hit for further development of antitumor agents. (c) 2006 Elsevier Ltd. All rights reserved.