1,5-Disubstituted 1,2,3-triazoles as cis-restricted analogues of combretastatin A-4: Synthesis, molecular modeling and evaluation as cytotoxic agents and inhibitors of tubulin
作者:Kristin Odlo、Jean Hentzen、Jérémie Fournier dit Chabert、Sylvie Ducki、Osman A.B.S.M. Gani、Ingebrigt Sylte、Martina Skrede、Vivi Ann Flørenes、Trond Vidar Hansen
DOI:10.1016/j.bmc.2008.03.049
日期:2008.5
1,5-disubstituted 1,2,3-triazole analogues of combretastatinA-4 (1) have been prepared. The triazole 12f, 2-methoxy-5-(1-(3,4,5-trimethoxyphenyl)-1H-1,2,3-triazol-5-yl)aniline, displayed potent cytotoxicactivity against several cancer cell lines with IC(50) values in the nanomolar range. The ability of triazoles to inhibit tubulin polymerization has been evaluated, and 12f inhibited tubulin polymerization
Enantioselective Trost alkynylation with 2E,4E-5-bromo-2,4-pentadienal
作者:Karina Ervik、Trond Vidar Hansen
DOI:10.1016/j.tetlet.2022.153879
日期:2022.6
The synthetically useful aldehyde 2E,4E-5-bromo-2,4-pentadienal was subjected to the enantioselective Trost alkynylation protocol, yielding highly functionalized propargylic secondary alcohols in an enantioselective manner. In most cases, the isolated yields and enantiomeric excess of the products were modest to high, but several products were formed in both high yields and enantiomeric excess.
对合成有用的醛 2 E ,4 E -5-bromo-2,4-pentadienal 进行对映选择性的 Trost 炔基化方案,以对映选择性的方式产生高度官能化的炔丙基仲醇。在大多数情况下,产物的分离产率和对映体过量从中等到高,但有几种产物以高产率和对映体过量形成。
1,2,3-Triazole analogs of combretastatin A-4 as potential microtubule-binding agents
A series of cis-restricted 1,4- and 1,5-disubstituted 1,2,3-triazole analogs of combretastatin A-4 (1) have been prepared. Cytotoxicity and tubulin inhibition studies showed that 2-methoxy-5-((5-(3,4,5-trimethoxyphenyl)-1H-1,2,3-triazol-1-yl)methyl)aniline (5e) and 2-methoxy-5-(1-(3,4,5-trimethoxybenzyl)-1H-1,2,3-triazol-5-yl)aniline (6e) were two of the most active compounds. Molecular modeling studies revealed that the N-2 and N-3 atoms in the triazole rings in 5e and 6e did not form hydrogen bonds with the amino acids in the anticipated pharmacophore. (C) 2010 Elsevier Ltd. All rights reserved.