Synthesis of α-Glucuronic Acid and Amide Derivatives in the Presence of a Participating 2-Acyl Protecting Group
作者:Manuela Tosin、Paul V. Murphy
DOI:10.1021/ol026629j
日期:2002.10.1
[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.