New para-para Stilbenophanes: Synthesis by McMurry Coupling, Conformational Analysis and Inhibition of Tubulin Polymerisation

作者：Alvarez Raquel; Lopez Vilmari; Mateo Carmen; Medarde Manuel^*; Pelaez Rafael

来源：Chemistry - A European Journal, 2011, 17(12): 3406-3419.

DOI：10.1002/chem.201002869

• combretastatin analogues
• conformation analysis
• cyclophanes
• structure-activity relationships
• tubulin polymerization inhibition

The synthesis of a new family of methoxy-substituted [2.7]- and [2.8]paracyclophanes linked by 3-oxapentamethylene- 1,5-dioxy and hexamethylene-1,6-dioxy bridges has been carried out by using the McMurry methodology. Related indole compounds were also synthesised. Olefin-to-diol ratios depended on the bridge length, the structure of the aromatic ring and the reaction conditions. Macrocyclisation, the methoxy substituents and the presence of a rigid indole moiety restricted the conformational equilibria, as observed by NMR spectroscopy and according to theoretical calculations. The synthesised compounds display micromolar tubulin polymerisation inhibitory activity. The conformational implications on the tubulin polymerisation inhibitory activity derived from the macrocyclisation when compared with combretastatins, closely related stilbenes, are also discussed.

• 出版日期2011-3