Synthesis of α-Glucuronic Acid and Amide Derivatives in the Presence of a Participating 2-Acyl Protecting Group
摘要:
[GRAPHICS]Participating acyl groups located at C-2 in glucosyl and related donors generally promote formation of 1,2-trans-glycosides. Reactions of some glucuronic acid donors with TMSN3/SnCl4 or ROH/SnCl4 gave only the 1,2-cis-glycoside. The stereoselectivity is consistent with participation of the C-6 group. The methodology was used for the synthesis of a Kdn2en mimetic with the alpha-configuration.
Synthesis of α-Glucuronic Acid and Amide Derivatives in the Presence of a Participating 2-Acyl Protecting Group
摘要:
[GRAPHICS]Participating acyl groups located at C-2 in glucosyl and related donors generally promote formation of 1,2-trans-glycosides. Reactions of some glucuronic acid donors with TMSN3/SnCl4 or ROH/SnCl4 gave only the 1,2-cis-glycoside. The stereoselectivity is consistent with participation of the C-6 group. The methodology was used for the synthesis of a Kdn2en mimetic with the alpha-configuration.
The synthesis of cyclic imidates from amides of glucuronic acid and investigation of glycosidation reactions
作者:Linda Cronin、Manuela Tosin、Helge Müller-Bunz、Paul V. Murphy
DOI:10.1016/j.carres.2006.10.023
日期:2007.1
The synthesis of novel cyclic glycosyl imidates and an investigation of their potential as donors in glycosidationreactions is described. The results show that 1,2-cis glycosides obtained from the reactions of glycosyl acetates or cyclic imidates, each derivedfrom amides of glucuronicacid, result from the anomerisation of initially formed 1,2-trans glycosides.