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Bioorg Med Chem Lett. 2003 Oct 20;13(20):3527-30.

Synthesis and evaluation of isatins and thiosemicarbazone derivatives against cruzain, falcipain-2 and rhodesain.

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Department of Chemistry, University of Cape Town, Rondebosch 7701, South Africa.


While commercial isatins were practically inactive against the target proteases, thiosemicarbazone derivatives were found to be active. The most active compound from the series displayed an inhibitory IC(50) value of 1 microM against rhodesain. One thiosemicarbazone was found to be active against all three proteases with inhibitory IC(50) values of 10 microM or less. A combination of N-benzylation and appropriate substitution on the aromatic portion of the isatin scaffold was generally found to be beneficial especially against cruzain for ketone inhibitors.

[Indexed for MEDLINE]

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