Reactions of Nucleophiles with Reactive Intermediates in the 3,4,6‐Tri‐<i>O</i>‐benzyl‐<scp>d</scp>‐glucal–TfOH–<i>n</i>‐Bu<sub>4</sub>NI Reaction System
作者:Idil Kasuto Kelson、Ben‐Ami Feit
DOI:10.1081/car-120026596
日期:2003.12.31
unique reactive intermediate formed in the 3,4,6‐tri‐O‐benzyl‐d‐glucal–TfOH (triflic acid)–n‐Bu4NI reaction system (in dichloromethane) reacted with nucleophiles in a regio‐ and stereoselective manner. These selectivities resulted in hitherto unknown compounds, such as benzyl 4,6‐di‐O‐benzyl‐2,3‐dideoxy‐3‐iodo‐α‐glucopyranoside, which was obtained in the presence of an iodide ion as a nucleophile. The
YAMANOI, TAKASHI;INAZU, TOSHIYUKI, CHEM. LETT.,(1990) N, C. 849-852
作者:YAMANOI, TAKASHI、INAZU, TOSHIYUKI
DOI:——
日期:——
Stereoselective Synthesis of 2-Deoxyglycosides from Sulfanyl Alkenes by Consecutive “One Pot” Cyclization and Glycosylation Reactions
作者:Miguel A. Rodríguez、Omar Boutureira、M. Isabel Matheu、Yolanda Díaz、Sergio Castillón
DOI:10.1002/ejoc.200601115
日期:2007.5
2-Deoxy-2-iodopyranosides 3, and 9–12 were synthesized from sulfanyl alkenes using a “onepot” consecutive cyclization–glycosylation process. Compared with the stepwise procedure, the “onepot” process gave significantly improved yields with similar or slightly lower selectivities. The “one