deoxy sugar esters of different carboxylic acids has been achieved. The objective of the work was to extend the strategy to the synthesis of furanose deoxy sugar derivatives and additionally, to N-Boc-protected amino acid esters. With all used carboxylic acids (deoxycholic acid, α-methoxyphenylacetic acid, N-Boc-l-phenylalanine and N-Boc-l-tyrosine) the lipase-catalyzedstereoselective acetylation
Neighboring‐Group Participation by C‐2 Acyloxy Groups: Influence of the Nucleophile and Acyl Group on the Stereochemical Outcome of Acetal Substitution Reactions
作者:Yuge Chun、Wouter A. Remmerswaal、Jeroen D. C. Codée、K. A. Woerpel
DOI:10.1002/chem.202301894
日期:2023.10.13
Neighboring-group participation by C-2 acyloxy groups can control the 1,2-trans stereoselectivity of acetal substitution reactions with the employment of strong nucleophiles. 1,2-Trans selectivity increases with decreased electron-donating ability of the acyloxy groups at C-2.