作者:Ahmed Kamal、Moku Balakrishna、Papagari Venkat Reddy、Abdul Rahim
DOI:10.1016/j.tetasy.2013.12.004
日期:2014.1
A simple, convergent, and efficient approach for the total synthesis of the bioactive E- and Z-isomers of cytospolide-D is described. The key features of the synthetic strategy include stereoselective methylation, regioselective epoxide opening, olefin cross-metathesis, and a Yamaguchi protocol reaction for the formation of the E-olefinic geometry of the 10 membered ring; Steglich esterification and
描述了用于胞嘧啶-D的生物活性E-和Z-异构体的全合成的简单,收敛和有效的方法。合成策略的关键特征包括立体选择性甲基化,区域选择性环氧化物开环,烯烃交叉复分解和形成10元环E-烯烃几何结构的Yamaguchi协议反应。Steglich酯化反应和闭环易位反应可形成骨架中具有Z烯烃几何结构的10元环。1-苹果酸用作构建烯酸片段的手性库起始原料,而d-甘露醇用作构建烯醇片段的手性库起始原料。