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Reference type: Journal
Authors: Krishnan H, Islam KMS, Hamzah Z, Ahmad MN
Article Title: Rational computational design for the development of andrographolide molecularly imprinted polymer.
Publication date: 2017
Journal: AIP Conference Proceedings
Volume: 1891
Issue: (1)
Page numbers: ArticleNo020083.
DOI: 10.1063/1.5005416
Alternative URL: http://aip.scitation.org/doi/abs/10.1063/1.5005416

Abstract: Andrographolide is a popular medicinal compound derived from Andrographis Paniculata (AP). Molecularly Imprint Polymer (MIP) is a "Lock and Key" approach, where MIP is the lock and Andrographolide is the key which fits to the MIP lock by both physically and chemically. MIP will be used as selective extraction tool to enrich Andrographolide bioactive compound. Pre-polymerization step is crucial to design MIP. This work investigates molecular interactions and the Gibbs free binding energies on the development of MIP. The structure of Andrographolide (template) and functional monomers were drawn in HyperChem 8.0.10. A hybrid quantum chemical model was used with a few functional monomers. Possible conformations of template and functional monomer as 1:n (n < 4) were designed and simulated to geometrically optimize the complex to the lowest energy in gas phase. The Gibbs free binding energies of each conformation were calculated using semi-empirical PM3 simulation method. Results proved that functional monomers that contain carboxylic group shows higher binding energy compared to those with amine functional group. Itaconic acid (IA) chosen as the best functional monomer at optimum ratio (1:3) of template: monomer to prepare andrographolide MIP. This study demonstrates the importance of studying intermolecular interaction among template, functional monomer and template-monomer ratio in developing MIP
Template and target information: andrographolide


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