Synthesis and Structure−Activity Relationships of Parasiticidal Thiosemicarbazone Cysteine Protease Inhibitors against Plasmodium falciparum, Trypanosoma brucei, and Trypanosoma cruzi
摘要:
We have synthesized a library of thiosemicarbazones and screened them against three parasitic cysteine proteases, cruzain, falcipain-2, and rhodesain, and against the respective parasite sources of these three proteases, Trypanosoma cruzi, Plasmodium falciparum, and Trypanosoma brucei. The screens identified compounds that were effective against the enzymes and the parasites but also some compounds that were parasiticidal despite a lack of activity against the proteases. Several compounds were effective in killing all tested parasites. These promising lead compounds were tested for general toxicity in mice, and only one produced observable toxicity after 62 h. Our results suggest that thiosemicarbazones represent validated drug leads that kill several species of protozoan parasites through the inhibition of cysteine proteases as well as other novel targets.
[EN] ANTI-PARASITIC COMPOUNDS AND METHODS OF THEIR USE<br/>[FR] COMPOSES ANTIPARASITAIRES ET LEURS PROCEDES D'UTILISATION
申请人:UNIV CALIFORNIA
公开号:WO2005087211A1
公开(公告)日:2005-09-22
The present invention provides a novel class of compounds that disrupt the parasitic infectious life cycle and serve as promising agents for anti-parasitic therapy.
本发明提供了一类新型化合物,可以破坏寄生虫的传染生命周期,并作为抗寄生虫疗法的有希望的药物。
Thiosemicarbazones as anti-virals and immunopotentiators
申请人:Barsanti A. Paul
公开号:US20050069555A1
公开(公告)日:2005-03-31
The present invention is directed to novel immune potentiators, novel vaccine adjuvants, novel compounds and pharmaceutical compositions, novel methods for treating viral infections, including HCV, by administering the compounds, and novel methods for modulating an immune response by administering the compounds.