(EN) The invention provides a topoisomerase poison of formula (I) wherein R1-R8 have any of the meanings defined in the specification, or a pharmaceutically acceptable salt thereof, as well as pharmaceutical compositions comprising a compound of formula (I) or a salt thereof, intermediates useful for preparing a compound of formula (I), and therapeutic methods comprising administering a compound of formula (I) or a salt thereof.(FR) L'invention concerne un poison topoisomérase de la formule (I) dans laquelle R1-R8 ont n'importe laquelle des significations définies dans la description, ou alors un sel de ce poison acceptable du point de vue pharmaceutique; l'invention concerne également des compositions pharmaceutiques comprenant un composé de la formule (I) ou un sel de ce composé, des intermédiaires utiles dans la préparation d'un composé de la formule (I) et des méthodes thérapeutiques comprenant l'administration d'un composé de la formule (I) ou d'un sel de ce composé.
Topoisomerase I inhibition and cytotoxicity of 5-Bromo- and 5-Phenylterbenzimidazoles
作者:Meera Rangarajan、Jung Sun Kim、Sai-Peng Sim、Angela Liu、Leroy F. Liu、Edmond J. LaVoie
DOI:10.1016/s0968-0896(00)00188-7
日期:2000.11
Significant enhancement in the topoisomerase I poisoning activity and cytotoxicity of 5-phenylterbenzimidazole is observed when the 2"-position is substituted with either a chloro or trifluoromethylsubstituent. The influence of such substituents on the biological activity of 5.6-dibromoterbenzimidazole (6a) was also explored. In the case of either 2"-chloro-5,6-dibromoterbenzimidazole (6b) or 2"-trifluoromethyl-5