Chemoenzymatic Synthesis of Nitrogen Polymers with Biomedical Applications Catalyzed by Lipases

  • Alicia BaldessariEmail author
  • Guadalupe García Liñares
Part of the Methods in Molecular Biology book series (MIMB, volume 1835)


The application of Candida antarctica lipase B as catalyst in the synthesis of two examples of nitrogen polymers is described. Firstly, we report a novel linear polyamidoamine oligomer, obtained by polymerization of ethyl acrylate and N-methyl-1,3-diaminopropane, catalyzed by Candida antarctica lipase B immobilized on polypropylene. The second part of the chapter describes an efficient route for the synthesis of a novel β-peptoid oligomer with hydroxyalkyl pendant groups in the nitrogen atom, through the polymerization of ethyl N-(2-hydroxyethyl)-β-alaninate catalyzed by Candida antarctica lipase B physically adsorbed within a macroporous poly(methyl methacrylate-co-butyl methacrylate) resin. Moreover, two derivatives of the β-peptoid oligomer were prepared: by acetylation and by grafting polycaprolactone. This last process was performed through ring-opening polymerization of caprolactone from the β-peptoid pendant hydroxyl groups and afforded a brush copolymer. The products were blended with polycaprolactone to make films by solvent casting. The inclusion of the acyl derivatives of the β-peptoid to polycaprolactone affected the morphology of the film yielding micro- and nanostructured patterns. The obtained products showed biomedical applications.

Key words

Nitrogen polymers Lipases Aza-Michael addition and aminolysis reactions Polyamidoamine Poly[N-(2-hydroxyethyl)-β-propylamide-g-polycaprolactone] 


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Alicia Baldessari
    • 1
    Email author
  • Guadalupe García Liñares
    • 1
  1. 1.Facultad de Ciencias Exactas y Naturales, Laboratorio de Biocatálisis, Departamento de Química Orgánica y UMYMFORUniversidad de Buenos AiresBuenos AiresArgentina

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