A Chiron Approach to Aminocytitols by Petasis-Borono-Mannich Reaction: Formal Synthesis of (+)-Conduramine E and (−)-Conduramine E
摘要:
A chiron approach to a stereoselective route for the synthesis of aminocytitols from carbohydrates is described. The formal synthesis of (+)-conduramine E and (-)-conduramine E was achieved by utilizing this strategy. The key features of the synthetic strategy include one-pot three-component Petasis-Borono-Mannich reaction to introduce the syn-beta-amino alcohol functionality of conduramine E and ring-closing metathesis to construct its carbocyclic core. The present synthetic approach paves the way for stereoselective synthesis of several conduramines starting from carbohydrates.
A Chiron Approach to Aminocytitols by Petasis-Borono-Mannich Reaction: Formal Synthesis of (+)-Conduramine E and (−)-Conduramine E
作者:Partha Ghosal、Arun K. Shaw
DOI:10.1021/jo300804d
日期:2012.9.7
A chiron approach to a stereoselective route for the synthesis of aminocytitols from carbohydrates is described. The formal synthesis of (+)-conduramine E and (-)-conduramine E was achieved by utilizing this strategy. The key features of the synthetic strategy include one-pot three-component Petasis-Borono-Mannich reaction to introduce the syn-beta-amino alcohol functionality of conduramine E and ring-closing metathesis to construct its carbocyclic core. The present synthetic approach paves the way for stereoselective synthesis of several conduramines starting from carbohydrates.
Formal Total Synthesis of (±)-Conduramine E Utilising the Bryce-Smith-Gilbert Photoamination Reaction
Utilising a Bryce-Smith-Gilbert photoamination of benzene as a key step, a synthesis of (±)-conduramine E was carried out. A highly regioselective dihydroxylation of a cyclic diene was effected utilising Sharpless AD-mix-β.
利用苯的 Bryce-Smith-Gilbert 光胺化作为关键步骤,进行了 (±)-conduramine E 的合成。使用 Sharpless AD-mix-β 实现了环状二烯的高度区域选择性二羟基化。