Synthesis and Antimalarial Activity of 2-Guanidino-4-oxoimidazoline Derivatives
摘要:
A series of 2-guanidino-4-oxoimidazoline (deoxo-IZ) derivatives was prepared and showed potent antimalarial activities in rodent and Rhesus models. Compound 8e, the most potent analogues of this series, is the first non-8-aminoqinoline antimalarial that demonstrated radical curative activity in non-human primate by Cl oral route and showed causal prophylactic activity comparable to that of the commonly used clinical drugs in Rhesus monkeys infected with sporozoites of Plasmodium cynomolgi. The metabolic stability and metabolites profile indicated that the new deoxo-IZ derivatives (8) may act as prodrugs of the corresponding IZ (1 and 2) derivatives.
[EN] 2-GUANIDINO-4-OXO-IMIDAZOLINE DERIVATIVES AS ANTIMALARIAL AGENTS, SYNTHESIS AND METHODS OF USE THEREOF [FR] DÉRIVÉS DE 2-GUANIDINO-4-OXO-IMIDAZOLINE EN TANT QU'AGENTS ANTIPALUDIQUES, SYNTHÈSE ET PROCÉDÉS D'UTILISATION DE CEUX-CI
Antimalarial Activities of New Guanidylimidazole and Guanidylimidazoline Derivatives
作者:Liang Zhang、Ramadas Sathunuru、Diana Caridha、Brandon Pybus、Michael T. O’Neil、Michael P. Kozar、Ai J. Lin
DOI:10.1021/jm200503s
日期:2011.10.13
A series of new guanidylimidazole derivatives was prepared and evaluated in mice and Rhesus monkeys infected with malarial sporozoites. The majority of the new compounds showed poor metabolic stability and weak in vitro activities in three clones of Plasmodium falciparum. Compounds 8a, 8h, 9a, 16a, and 16e cured the mice infected with sporozoites of P. berghei at 160 and 320 mg/kg/day x 3 po. Compounds 8a showed better causal prophylactic activity than primaquine, tafenoquine, and Malarone in the Rhesus test. In the radical curative test, 8a cured one monkey and delayed relapse of another for 74 days at 30 mg/kg/day x 7 by im. By oral dosing, 8a delayed relapse 81 days for one and 32 days for other vs 11-12 days for control monkeys treated with 10 mg/kg of chloroquine by po alone. Compound 8h, which showed superior activity to 8a in mouse test, delayed the relapse of treated monkeys for 21-26 days at 30 mg/kg/day x 7 by oral.
[EN] GUANIDYLIMIDAZOLE AND GUANIDYLIMIDAZOLINE DERIVATIVES AS ANTIMALARIAL AGENTS, SYNTHESIS OF AND METHODS OF USE THEREOF<br/>[FR] DÉRIVÉS DE GUANIDYLIMIDAZOLE ET DE GUANIDYLIMIDAZOLINE EN TANT QU'AGENTS ANTI-MALARIA, LEUR SYNTHÈSE ET LEURS PROCÉDÉS D'UTILISATION
申请人:US OF AMERICA AS REPRESENTED BY THE SECRETARY OF ARMY
公开号:WO2012149097A2
公开(公告)日:2012-11-01
The present invention relates to new guanidylimidazole derivatives and guanidylimidazoline derivatives, methods of making these compounds, compositions containing the same, and methods of using the same to prevent, treat, or inhibit malaria in a subject.
Synthesis and Antimalarial Activity of 2-Guanidino-4-oxoimidazoline Derivatives
作者:Xianjun Liu、Xihong Wang、Qigui Li、Michael P. Kozar、Victor Melendez、Michael T. O’Neil、Ai J. Lin
DOI:10.1021/jm200111g
日期:2011.7.14
A series of 2-guanidino-4-oxoimidazoline (deoxo-IZ) derivatives was prepared and showed potent antimalarial activities in rodent and Rhesus models. Compound 8e, the most potent analogues of this series, is the first non-8-aminoqinoline antimalarial that demonstrated radical curative activity in non-human primate by Cl oral route and showed causal prophylactic activity comparable to that of the commonly used clinical drugs in Rhesus monkeys infected with sporozoites of Plasmodium cynomolgi. The metabolic stability and metabolites profile indicated that the new deoxo-IZ derivatives (8) may act as prodrugs of the corresponding IZ (1 and 2) derivatives.
[EN] 2-GUANIDINO-4-OXO-IMIDAZOLINE DERIVATIVES AS ANTIMALARIAL AGENTS, SYNTHESIS AND METHODS OF USE THEREOF<br/>[FR] DÉRIVÉS DE 2-GUANIDINO-4-OXO-IMIDAZOLINE EN TANT QU'AGENTS ANTIPALUDIQUES, SYNTHÈSE ET PROCÉDÉS D'UTILISATION DE CEUX-CI
申请人:US OF AMERICA AS REPRESENTED BY THE SECRETARY OF ARMY
公开号:WO2012149093A1
公开(公告)日:2012-11-01
The present invention relates to new 2-guanidino-4-oxo-imidazoline derivatives (deoxo-IZ), methods of making these compounds, compositions containing the same, and methods of using the same to prevent, treat, or inhibit malaria in a subject.