Synthetic Efforts toward the Macrolactone Core of Leucascandrolide A
摘要:
[Graphics]A chemoselective synthesis of 1, the macrocyclic core of leucascandrolide A, has been achieved by utilizing highly enantioselective allylmetalations, an enantioselective Noyori reduction of a propargylic ketone, and olefin metatheses as the key steps.
Efficient, divergent synthesis of cryptophycin unit A analogues
作者:Kyle L. Bolduc、Scott D. Larsen、David H. Sherman
DOI:10.1039/c2cc32417b
日期:——
A flexible and divergent synthesis of cryptophycin unit A analogues is described. This method relies on iridium-catalysed stereo- and enantioselective crotylation and chemoselective one-pot oxidative olefination to access common intermediate . Heck, cross metathesis, and Suzuki-Miyaura reactions are illustrated for the generation of methyl ester unit A analogues .
描述了一种灵活多变的隐藻素单元 A 类似物的合成方法。该方法依赖于铱催化的立体和对映选择性巴豆化和化学选择性一锅氧化烯化来获得常见的中间体。Heck、交叉复分解和 Suzuki-Miyaura 反应被说明用于生成甲酯单元 A 类似物。