Cross-coupling reactions in Cinchona alkaloid chemistry: aryl-substituted and dimeric quinine, quinidine, as well as quincorine and quincoridine derivatives
Studies on the Asymmetric Dihydroxylation of Advanced Bryostatin C-Ring Segments
作者:H. Martin Hoffmann、Martin C. Seidel、René Smits、Christian B. Stark、Jens Frackenpohl、Oliver Gaertzen
DOI:10.1055/s-2004-822400
日期:——
The asymmetric dihydroxylation reaction of early stage and advanced Bryostatin C-ring precursors was evaluated. For homoallylic ethers and alcohols, several AD ligands were investigated including a novel class of quinidine-alkynes.
早期和进阶 Bryostatin C 环前体的不对称二羟基化反应被评估。对于高同位醚和醇,研究了多种 AD 配体,包括一类新型的奎尼丁炔。
Cross-coupling reactions in Cinchona alkaloid chemistry: aryl-substituted and dimeric quinine, quinidine, as well as quincorine and quincoridine derivatives
作者:Jens Frackenpohl、Wilfried M. Braje、H. Martin R. Hoffmann
DOI:10.1039/b004693k
日期:——
Cross-coupling reactions of modified Cinchona alkaloids provide access to a wide variety of novel arylated and dimeric derivatives of quinine and quinidine containing a single and double 1,2-amino alcohol functionality. Sonogashira and Heck reactions allow functionalization of ethynyl and 11-iodovinyl precursors. The role of bystander functionality is investigated.