Synthesis, antimalarial activity, and preclinical pharmacology of a novel series of 4'-fluoro and 4'-chloro analogues of amodiaquine. Identification of a suitable "back-up" compound for N-tert-butyl isoquine.
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O'Neill PM, Shone AE, Stanford D, Nixon G, Asadollahy E, Park BK, Maggs JL, Roberts P, Stocks PA, Biagini G, Bray PG, Davies J, Berry N, Hall C, Rimmer K, Winstanley PA, Hindley S, Bambal RB, Davis CB, Bates M, Gresham SL, Brigandi RA, Gomez-de-Las-Heras FM, Gargallo DV, Parapini S, Vivas L, Lander H, Taramelli D, Ward SA
Synthesis, antimalarial activity, and preclinical pharmacology of a novel series of 4'-fluoro and 4'-chloro analogues of amodiaquine. Identification of a suitable "back-up" compound for N-tert-butyl isoquine.
J Med Chem. 2009 Apr 9;52(7):1828-44. doi: 10.1021/jm8012757.
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- 19284751 [ View in PubMed]
- Abstract
On the basis of a mechanistic understanding of the toxicity of the 4-aminoquinoline amodiaquine (1b), three series of amodiaquine analogues have been prepared where the 4-aminophenol "metabolic alert" has been modified by replacement of the 4'-hydroxy group with a hydrogen, fluorine, or chlorine atom. Following antimalarial assessment and studies on mechanism of action, two candidates were selected for detailed ADME studies and in vitro and in vivo toxicological assessment. 4'-Fluoro-N-tert-butylamodiaquine (2k) was subsequently identified as a candidate for further development studies based on potent activity versus chloroquine-sensitive and resistant parasites, moderate to excellent oral bioavailability, low toxicity in in vitro studies, and an acceptable safety profile.
DrugBank Data that Cites this Article
- Binding Properties
Drug Target Property Measurement pH Temperature (°C) Amodiaquine Cytochrome P450 2C9 IC 50 (nM) 62000 N/A N/A Details Amodiaquine Cytochrome P450 2D6 IC 50 (nM) 6100 N/A N/A Details