Conjugation of Quinones with Natural Polyamines: Toward an Expanded Antitrypanosomatid Profile
摘要:
A combinatorial library of quinone-polyamine conjugates designed to optimize the antitrypanosomatid profile of hit compounds 1 and 2 has been prepared by a solid-phase approach. The conjugates were evaluated against the three most important human trypanosomatid pathogens (Trypanosoma brucei rhodesiense, Trypanosoma cruzi, and Leishmania donovani), and several showed promising activity. A subset also inhibited trypanothione reductase in vitro and induced oxidase activity of the enzyme. A highly potent analogue (7) was identified with activity against T. brucei as low as 70 nM and a selectivity index of 72. Interestingly, the presence of a cadaverine tail confers to 7 the ability to target mitochondrial function in Leishmania. In fact, in L. donovani promastigotes, we verified for 7 a decrease of cytoplasmic ATP and mitochondrial potential. Therefore, the current results support the suitability of the conjugation approach for the development of novel polyamine conjugates with enhanced therapeutic potential.
1,3-Dimethyllumazine Derivatives from <i>Limnatis </i><i>n</i><i>ilotica</i>
作者:Gerard Voerman、Silvia Cavalli、Gijsbert A. van der Marel、Wolfgang Pfleiderer、Jacques H. van Boom、Dmitri V. Filippov
DOI:10.1021/np049617a
日期:2005.6.1
Two previously unknown lumazine derivatives, 1 and 2, have been isolated from the parasitic freshwater leech Limnatis nilotica. The structures of the compounds have been elucidated by NMR and unambiguously corroborated by chemical synthesis.
Conjugation of Quinones with Natural Polyamines: Toward an Expanded Antitrypanosomatid Profile
作者:Federica Lizzi、Giacomo Veronesi、Federica Belluti、Christian Bergamini、Almudena López-Sánchez、Marcel Kaiser、Reto Brun、R. Luise Krauth-Siegel、Dennis G. Hall、Luis Rivas、Maria Laura Bolognesi
DOI:10.1021/jm301112z
日期:2012.12.13
A combinatorial library of quinone-polyamine conjugates designed to optimize the antitrypanosomatid profile of hit compounds 1 and 2 has been prepared by a solid-phase approach. The conjugates were evaluated against the three most important human trypanosomatid pathogens (Trypanosoma brucei rhodesiense, Trypanosoma cruzi, and Leishmania donovani), and several showed promising activity. A subset also inhibited trypanothione reductase in vitro and induced oxidase activity of the enzyme. A highly potent analogue (7) was identified with activity against T. brucei as low as 70 nM and a selectivity index of 72. Interestingly, the presence of a cadaverine tail confers to 7 the ability to target mitochondrial function in Leishmania. In fact, in L. donovani promastigotes, we verified for 7 a decrease of cytoplasmic ATP and mitochondrial potential. Therefore, the current results support the suitability of the conjugation approach for the development of novel polyamine conjugates with enhanced therapeutic potential.