A concise synthesis of glycolipids based on aspartic acid building blocks

Molecules. 2012 Sep 25;17(10):11346-62. doi: 10.3390/molecules171011346.

Abstract

L-aspartic acid building blocks bearing galactosyl moieties were used to synthesise glycolipid mimetics of variable hydrocarbon chain length. The glycolipids were readily prepared through amide bond formation using the TBTU/HOBt coupling methodology. It was observed that, under these conditions, activation of the α-carboxylic acid of the intermediates led to near complete racemisation of the chiral centre if the reaction was carried out in the presence of a base such as triethylamine. The enantiomerically pure glycolipids were obtained after careful consideration of the synthetic sequence and by performing the coupling reactions in the absence of base.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aspartic Acid / chemistry*
  • Glycolipids / chemical synthesis*
  • Glycolipids / chemistry

Substances

  • Glycolipids
  • Aspartic Acid