Self-condensation of activated malonic acid half esters: a model for the decarboxylative Claisen condensation in polyketide biosynthesis
作者:Youngha Ryu、A.Ian Scott
DOI:10.1016/j.tetlet.2003.08.014
日期:2003.9
The reaction of a malonicacid half oxyester with a N-hydroxysuccinimidyl ester-forming reagent resulted in self-condensation to provide the corresponding 1,3-acetonedicarboxylic acid diester. This new method does not require a divalent metal chelator or a coordinating solvent for successful condensation.
Formal Synthesis of (±)-Aplykurodinone-1 Based on the Indium-Catalyzed Conia-Ene Reaction
作者:Xiaoji Wang、Liping Wang、Shuangping Huang、Yi Zhou、Hesheng Xiao、Wentao Ou、Yiying Pang、Wang Li
DOI:10.1055/s-0040-1707883
日期:2020.9
A concise formal synthesis of (±)-aplykurodinone-1 starting from a commercially available material and based on the indium-catalyzed Conia-ene reaction has been accomplished. The synthesis features a Riley selenium dioxide oxidation, a Krapcho dealkoxycarbonylation, and a ring-closing metathesis approach. The synthetic strategy was also supported by a Saegusa oxidation and a classic Michael 1,4-conjugate
(±)-aplykurodinone-1 从市售材料开始并基于铟催化的 Conia-ene 反应的简明正式合成已经完成。该合成采用 Riley 二氧化硒氧化、Krapcho 脱烷氧基羰基化和闭环复分解方法。Saegusa 氧化和经典的 Michael 1,4-共轭加成也支持合成策略。