Synthesis and antimalarial activity of new 1,12-bis(N,N′-acetamidinyl)dodecane derivatives
作者:Mahama Ouattara、Sharon Wein、Michèle Calas、Yen Vo Hoang、Henri Vial、Roger Escale
DOI:10.1016/j.bmcl.2006.11.013
日期:2007.2
Amidoxime and O-substituted derivatives of the bis-alkylamidine 1,12-bis(N,N'-acetamidinyl)dodecane were synthesized and evaluated as in vitro and in vivo antimalarial prodrugs. The bis-O-methylsulfonylamidoxime 8 and the bis-oxadiazolone 9 derivatives show relatively potent antimalarial activity after oral administration.
metabolism. Unfortunately, these compounds are not orallyavailable. To solve this absorption issue, we investigated a prodrug strategy based on sulfonate derivatives of alkylamidoximes. A total of 25 sulfonates were synthesized as prodrug candidates of one bis‐N‐alkylamidine and of six N‐substituted bis‐C‐alkylamidines. Their antimalarial activities were evaluated in vitro against P. falciparum and in vivo
Pharmacokinetic properties and metabolism of a new potent antimalarial N-alkylamidine compound, M64, and its corresponding bioprecursors
作者:Delphine Margout、Florence Gattacceca、Georges Moarbess、Sharon Wein、Christophe Tran van Ba、Samuel Le Pape、Olivier Berger、Roger Escale、Henri J. Vial、Françoise M.M. Bressolle
DOI:10.1016/j.ejps.2010.10.012
日期:2011.1
Antimalarial activities and pharmacokinetics of the bis-alkylamidine, M64, and its amidoxime, M64-AH, and O-methylsulfonate, M64-S-Me, derivatives were investigated. M64 and M64-S-Me had the most potent activity against the Plasmodium falciparum growth (IC50 <= 12 nM). The three compounds can clear the Plasmodium vinckei infection in mice (ED50 < 10 mg/kg). A liquid chromatography-mass spectrometry method was validated to simultaneously quantify M64 and M64-AH in human and rat plasma. M64 is partially metabolized to M64-monoamidoxime and M64-monoacetamide by rat and mouse liver microsomes. The amidoxime M64-AH undergoes extensive metabolism forming M64, M64-monoacetamide, M64-diacetamide and M64-monoamidoxime. Strong interspecies differences were observed. The pharmacokinetic profiles of M64. M64-AH and M64-S-Me were studied in rat after intravenous and oral administrations. M64 is partially metabolized to M64-AH; while M64-S-Me is rapidly and totally converted to M64 and M64-AH. M64-AH is mostly oxidized to the inactive M64-diacetamine while its N-reduction to the efficient M64 is a minor metabolic pathway. Oral dose of M64-AH was well absorbed (38%) and converted to M64 and M64-diacetamide. This study generated substantial information about the properties of this class of antimalarial drugs. Other routes of synthesis will be explored to prevent oxidative transformation of the amidoxime and to favour the N-reduction. (C) 2010 Elsevier B.V. All rights reserved.
Compounds with antiparasitic activity and medicines containing same
申请人:Vial Henri
公开号:US20050176819A1
公开(公告)日:2005-08-11
The invention relates to compounds having an anti-parasitic, in particular antimalarial activity, characterized in that they correspond to general formula (I)
Applications in particular as compounds with anti-parasitic activity.