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. 2010 Mar 10;3(1):15.
doi: 10.1186/1756-3305-3-15.

The development of drugs for treatment of sleeping sickness: a historical review

Dietmar Steverding  1
Affiliations

The development of drugs for treatment of sleeping sickness: a historical review

Dietmar Steverding. Parasit Vectors. .

Abstract

Only four drugs are available for the chemotherapy of human African trypanosomiasis or sleeping sickness; Suramin, pentamidine, melarsoprol and eflornithine. The history of the development of these drugs is well known and documented. suramin, pentamidine and melarsoprol were developed in the first half of the last century by the then recently established methods of medicinal chemistry. Eflornithine, originally developed in the 1970s as an anti-cancer drug, became a treatment of sleeping sickness largely by accident. This review summarises the developmental processes which led to these chemotherapies from the discovery of the first bioactive lead compounds to the identification of the final drugs.

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Figures

Figure 1
Figure 1
Chemical structures of sulphated naphthylamine derivatives with trypanocidal activities.
Figure 2
Figure 2
Chemical structures of main arsenical compounds with trypanocidal activities. With respect to arsenophenylglycine, Ehrlich thought that it consisted of two molecules joined by a As = As double bond. Years later it was found that arsenophenylglycine and other arsenobenzenes are polymers of several molecules whose arsenic atoms were linked by single bonds [9].
Figure 3
Figure 3
Reaction of melarsen oxide with British anti-Lewisite (BAL) to produce melarsoprol.
Figure 4
Figure 4
Chemical structures of diamidines with trypanocidal activities.
Figure 5
Figure 5
Chemical structure of nifurtimox.
Figure 6
Figure 6
Chemical structure of eflornithine.
See this image and copyright information in PMC

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