Studies towards the synthesis of the northern polyene of viridenomycin and synthesis of Z-double bond analogues
作者:Jonathan P. Knowles、Victoria E. O′Connor、Andrew Whiting
DOI:10.1039/c0ob00977f
日期:——
Viridenomycin is a structurally challenging, potentially biologically valuable molecule which has yet to succumb to total synthesis. Its instability, perhaps particularly associated with the northern polyene may contribute to the difficulties of piecing this molecule together. The synthesis of northern polyene models, including potentially stabilised analogues incorporating benzene rings as Z-alkene replacements, have been prepared using an efficient series of cross-coupling reactions. The resulting polyenes and polyene surrogates have been converted into tetraene ester and amide models of the viridenomycin system. These analogues have sufficient stability compared with the unsubstituted northern polyene analogue to be viable for future developing a strategy for the construction of viridenomycin and analogues.
维里德诺霉素是一种结构复杂、具有潜在生物价值的分子,目前尚未实现全合成。其不稳定性,尤其是与北多烯部分相关的不稳定性,可能是合成这一分子时遇到困难的原因之一。通过一系列高效的交叉偶联反应,已经制备了包括可能通过引入苯环作为Z-烯烃替代物来稳定化的北多烯模型。这些多烯及其替代物已被转化为四烯酯和酰胺模型,模拟维里德诺霉素系统。与未取代的北多烯类似物相比,这些类似物具有足够的稳定性,可为未来构建维里德诺霉素及其类似物的发展策略提供可行性。