Biocatalytic Aldol Addition of Simple Aliphatic Nucleophiles to Hydroxyaldehydes

Raquel Roldán, Karel Hernandez, Jesús Joglar, Jordi Bujons, Teodor Parella, Israel Sánchez-Moreno, Virgil Hélaine, Marielle Lemaire, Christine Guérard-Hélaine, Wolf Dieter Fessner, Pere Clapés

Research output: Contribution to journalArticleResearch

23 Citations (Scopus)

Abstract

© 2018 American Chemical Society. Asymmetric aldol addition of simple aldehydes and ketones to electrophiles is a cornerstone reaction for the synthesis of unusual sugars and chiral building blocks. We investigated d-fructose-6-phosphate aldolase from E. coli (FSA) D6X variants as catalysts for the aldol additions of ethanal and nonfunctionalized linear and cyclic aliphatic ketones as nucleophiles to nonphosphorylated hydroxyaldehydes. Thus, addition of propanone, cyclobutanone, cyclopentanone, or ethanal to 3-hydroxypropanal or (S)- or (R)-3-hydroxybutanal catalyzed by FSA D6H and D6Q variants furnished rare deoxysugars in 8-77% isolated yields with high stereoselectivity (97:3 dr and >95% ee).
Original languageEnglish
Pages (from-to)8804-8809
JournalACS catalysis
Volume8
DOIs
Publication statusPublished - 7 Sept 2018

Keywords

  • aldol reaction
  • aldolases
  • asymmetric catalysis
  • biocatalysis
  • carbon-carbon bond formation
  • deoxysugars
  • enzyme engineering

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