Hederagenin as a triterpene template for the development of new antitumor compounds
作者:Diego Rodríguez-Hernández、Antonio J. Demuner、Luiz C.A. Barbosa、René Csuk、Lucie Heller
DOI:10.1016/j.ejmech.2015.10.006
日期:2015.11
In this study, a series of novel C-28 esters and amides derivatives of hederagenin (He) were designed and synthesized in attempt to develop potent antitumor agents. Their structures were confirmed by MS, IR, H-1 NMR and C-13 NMR spectroscopic analyses and their cytotoxic activities were screened in SRB assays using a panel of six human cancer cell lines. Although most of the compounds displayed moderate to high levels of cytotoxic activity they were all more potent than the natural product He. The most active compounds had either an ethylpyrimidinyl (27) or an ethylpyrrolidinyl (28) substituent, with EC50 in the range of 1.1-6.5 mu M for six human cancer cell lines. Notably, this corresponds to an approximately 30-fold times greater potency than He. (C) 2015 Elsevier Masson SAS. All rights reserved.
Highly potent anti-leishmanial derivatives of hederagenin, a triperpenoid from Sapindus saponaria L.
作者:Diego Rodríguez-Hernández、Luiz C.A. Barbosa、Antonio J. Demuner、Raquel M. de Almeida、Ricardo T. Fujiwara、Sebastião R. Ferreira
DOI:10.1016/j.ejmech.2016.08.030
日期:2016.11
Leishmaniasis is a neglected tropicaldisease (NTDs), endemic in 88 countries that affect more than 12 million people. Current drugs are limited due to their toxicity, development of biological resistance, length of treatment and high cost. Thus, the search for new effective and less toxic treatments is an urgent need. In this study, we report the synthesis of 3 new amide derivatives of hederagenin (22–24)