Synthesis and biological evaluation of colchicine C-ring analogues tethered with aliphatic linkers suitable for prodrug derivatisation
作者:Jérémie Fournier-Dit-Chabert、Victoria Vinader、Ana Rita Santos、Mariano Redondo-Horcajo、Aurore Dreneau、Ramkrishna Basak、Laura Cosentino、Gemma Marston、Hamdy Abdel-Rahman、Paul M. Loadman、Steven D. Shnyder、José Fernando Díaz、Isabel Barasoain、Robert A. Falconer、Klaus Pors
DOI:10.1016/j.bmcl.2012.09.104
日期:2012.12
Colchicine was modified at the 10-OCH3 position of the C-ring by reaction with heterocyclic amines or commercially available amines to afford a library of target colchicinoids in high yields (62-99%). Molecular modeling revealed that the incorporation of the linker groups led to a reduction in entropy and therefore binding affinity when compared with colchicine. Some colchicinoids were shown to be equicytotoxic with colchicine when evaluated in the DLD-1 colon cancer cells and retained activity in resistant A2780AD or HeLa cells with mutant Class III beta-tubulin. Importantly, unlike colchicine, the analogues in this study are amenable for prodrug derivatisation and with potential for tumor-selective delivery. (C) 2012 Elsevier Ltd. All rights reserved.
Synthesis and Antitumour Activity of Novel Colchicine C-10 Derivatives
作者:Li Hong Shen、Le Zhang、Hai Xian Wang、Xin Wang、Gai Jiao Zhang
DOI:10.14233/ajchem.2014.16892
日期:——
A series of new colchicine C-10 derivatives (2a-i, 3a-h) were synthesized by replacement of the 10-methoxy with NR2 and SCH3 in order to determine their cytotoxic activity. The compounds were synthesized in good yield and the structures of all newly synthesized compounds were established on the basis of their IR, 1H NMR and elemental analysis. The synthesized compounds were tested in vitro antitumor activity against four human cancer cell lines by MTT assay. It was found that many of the derivatives displayed significant activity, particularly, compound 2a and 2b showed more potent cytotoxic activities than colchicine.