[EN] SMALL MOLECULE NAPHTHOQUINONE- AND PHTHALIMIDE-BASED LIPOCATIONS AS ANTI-PARASITIC AGENTS [FR] LIPOCATIONS À BASE DE NAPHTOQUINONE ET DE PHTALIMIDE À PETITES MOLÉCULES EN TANT QU'AGENTS ANTI-PARASITAIRES
novel bivalent mimetics of annonaceousacetogenins have been designed, synthesized, and evaluated. Among these, compound bearing a homopiperazine ring in the middle region exhibited more potent growth inhibitory activity and higher selectivity against cancer cells over normal cells by comparison with AA005. This work indicates that modification of the middle piperazine ring is a useful optimizing tool
作者:Timothy E. Long、Xiao Lu、Melina Galizzi、Roberto Docampo、Jiri Gut、Philip J. Rosenthal
DOI:10.1016/j.bmcl.2012.02.045
日期:2012.4
Phosphonium lipocations were synthesized and evaluated for inhibition of the development of Plasmodium falciparum and Trypanosoma cruzi, etiological agents of malaria and Chagas disease, respectively. Optimal phthalimides and 1,4-naphthoquinone-based lipocations were active in vitro at mid-high nM concentrations against P. falciparum and low mu M concentrations against T. cruzi. Published by Elsevier Ltd.
1,4-Naphthoquinone Cations as Antiplasmodial Agents: Hydroxy-, Acyloxy-, and Alkoxy-Substituted Analogues
作者:Xiao Lu、Ali Altharawi、Jiri Gut、Philip J. Rosenthal、Timothy E. Long
DOI:10.1021/ml300242v
日期:2012.12.13
Cations of hydroxy-substituted 1,4-naphthoquinones were synthesized and evaluated as antiplasmodial agents against Plasmodium falciparum. The atovaquone analogues were found to be inactive as antagonists of parasite growth, which was attributed to ionization of the acidic hydroxyl moiety. Upon modification to an alkoxy substituent, the antiplasmodial activity was restored in the sub-100 nM range. Optimal inhibitors were found to possess IC50 values of 17.4 49.5 nM against heteroresistant P. falciparum W2.
Synthesis of mitochondria-targeted menadione cation derivatives: Inhibiting mitochondrial thioredoxin reductase (TrxR2) and inducing apoptosis in MGC-803 cells