Molecular mimetics are compounds resembling bio-molecules by having similar chemical-, structural- or biological characteristics. The organic chemist working in this field of expertise is ultimately aiming for the development of substances that can compete with the ones made in nature.
Early examples from our group include the development of synthetic protocols for the construction of oligomers of phosphor-thioate nucleic acids. Nucleic acid oligomers mimetics of this type, have the same hybridizing properties as their natural counterparts, but are much less susceptible for enzymatic degradation by nucleases and thus useful in an antisense approach.
Current research in mimetic design includes the construction, structural elucidation and biological evaluation of sugar amino acids and derivatives (see Figure). Sugar amino acids are sugar derivatives having at least one amino- and one carboxylic acid functionality. This versatile class of compounds, also found in nature, can be used for the construction of both glyco- and peptidomimetics.
Mimetic design
Selected publications:
A compendium of sugar amino acids (SAA): scaffolds, peptide- and glyco-mimetics, Tetrahedron-Asymmetry, 2007, vol. 18, no. 17, pp. 2001-2010
beta-turn modified gramicidin S analogues containing arylated sugar amino acids display antimicrobial and hemolytic activity comparable to the natural product, Journal of the American Chemical Society, 2006, vol. 128, no. 23, pp. 7559-7565
Carbohydrates as versatile platforms in the construction of small compound libraries, Pure and Applied Chemistry, 2005, vol. 77, no. 7, pp. 1173-1181
Conformational analysis of furanoid epsilon-sugar amino acid containing cyclic peptides by NMR spectroscopy, molecular dynamics simulation, and X-ray crystallography: Evidence for a novel turn structure, Journal of the American Chemical Society, 2003, vol. 125, no. 36, pp. 10822-10829
Synthesis of alkylated sugar amino acids: conformationally restricted L-Xaa-L-Ser/Thr mimics, Organic & Biomolecular Chemistry, 2007, vol. 5, no. 14, pp. 2311-2314
Transformation of glucose into a novel carbasugar amino acid dipeptide isostere, Journal of Carbohydrate Chemistry, 2007, vol. 26, no. 1, pp. 41-59
- Varsha Kapoerchan
- Matthijs van der Knaap



