Dibenzylideneacetone analogues as novel Plasmodium falciparum inhibitors. 2011

Rahul Balasaheb Aher, and Gajanan Wanare, and Neha Kawathekar, and Ravi Ranjan Kumar, and Naveen Kumar Kaushik, and Dinkar Sahal, and Virander Singh Chauhan
Department of Pharmacy, Shri G.S. Institute of Technology and Science, 23 Park Road, Indore 452003 (MP), India. rahulba26@yahoo.co.in

A series of dibenzylideneacetones (A1-A12) and some of their pyrazolines (B1-B4) were synthesized and evaluated in vitro for blood stage antiplasmodial properties in Plasmodium falciparum culture using SYBR-green-I fluorescence assay. The compound (1E, 4E)-1,5-bis(3,4-dimethoxyphenyl)penta-1,4-dien-3-one (A9) was found to be the most active with IC(50) of 1.97 μM against chloroquine-sensitive strain (3D7) and 1.69 μM against chloroquine-resistant field isolate (RKL9). The MTT based cytotoxicity assay on HeLa cell line has confirmed that A9 is selective in its action against malaria parasite (with a therapeutic index of 166). Our results revealed that these compounds exhibited promising antiplasmodial activities which can be further explored as potential leads for the development of cheaper, safe, effective and potent drugs against chloroquine-resistant malarial parasites.

UI MeSH Term Description Entries
D010963 Plasmodium falciparum A species of protozoa that is the causal agent of falciparum malaria (MALARIA, FALCIPARUM). It is most prevalent in the tropics and subtropics. Plasmodium falciparums,falciparums, Plasmodium
D011720 Pyrazoles Azoles of two nitrogens at the 1,2 positions, next to each other, in contrast with IMIDAZOLES in which they are at the 1,3 positions.
D006367 HeLa Cells The first continuously cultured human malignant CELL LINE, derived from the cervical carcinoma of Henrietta Lacks. These cells are used for, among other things, VIRUS CULTIVATION and PRECLINICAL DRUG EVALUATION assays. Cell, HeLa,Cells, HeLa,HeLa Cell
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000096 Acetone A colorless liquid used as a solvent and an antiseptic. It is one of the ketone bodies produced during ketoacidosis.
D000962 Antimalarials Agents used in the treatment of malaria. They are usually classified on the basis of their action against plasmodia at different stages in their life cycle in the human. (From AMA, Drug Evaluations Annual, 1992, p1585) Anti-Malarial,Antimalarial,Antimalarial Agent,Antimalarial Drug,Anti-Malarials,Antimalarial Agents,Antimalarial Drugs,Agent, Antimalarial,Agents, Antimalarial,Anti Malarial,Anti Malarials,Drug, Antimalarial,Drugs, Antimalarial
D001597 Benzylidene Compounds Compounds which include a double-bonded carbon atom that is directly attached to a benzene ring. While this category is named after the highly reactive compound benzylidene, the compounds listed under it occur through a variety of synthetic pathways. Benzylidene Compound,Benzylidene Derivative,Benzylidene Derivatives,Phenylmethylene Derivative,Phenylmethylene Derivatives,Compound, Benzylidene,Compounds, Benzylidene,Derivative, Benzylidene,Derivative, Phenylmethylene,Derivatives, Benzylidene,Derivatives, Phenylmethylene
D015394 Molecular Structure The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds. Structure, Molecular,Molecular Structures,Structures, Molecular
D020128 Inhibitory Concentration 50 The concentration of a compound needed to reduce population growth of organisms, including eukaryotic cells, by 50% in vitro. Though often expressed to denote in vitro antibacterial activity, it is also used as a benchmark for cytotoxicity to eukaryotic cells in culture. IC50,Concentration 50, Inhibitory

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