A Sequential Indium-Mediated Aldehyde Allylation/Palladium-Catalyzed Cross-Coupling Reaction in the Synthesis of 2-Deoxy-β-<i>C</i>-Aryl Glycosides
作者:John Alec Moral、Seong-Jin Moon、Samuel Rodriguez-Torres、Thomas G. Minehan
DOI:10.1021/ol901353f
日期:2009.8.20
Indium-mediated allylation of aldehydes with 2-chloro-3-iodopropene, followed by a palladium-catalyzed cross-coupling reaction with triarylindium reagents or arylboronic acids, leads to aryl-substituted homoallylic alcohols in good to excellent yields and diastereoselectivities. The products obtained from reactions conducted with D-glyceraldehyde acetonide can be transformed into 2-deoxy-beta-C-aryl ribofuranosides in high overall yields. Similarly, 2-deoxy-beta-C-aryl allopyranosides may be prepared efficiently from 2,4-O-benzylidene erythrose.
Concise Asymmetric Synthesis of (5<i>R</i>)-6-Hydroxy-3,8-dioxabicyclo[3.2.1]octane Derivatives
作者:Chong-Feng Pan、Zu-Hui Zhang、Gao-Jun Sun、Zhi-Yong Wang
DOI:10.1021/ol049008u
日期:2004.9.1
[reaction: see text] A concise method to asymmetrically synthesize 6-hydroxy-3,8-dioxabicyclo[3.2.1]octane (HDBO) derivatives was devised.