Molecular Recognition by beta-Cyclodextrin Derivatives: FEP vs MM / PBSA Study

Author(s): I. Bea, E. cervello, P. A. Kollman, C. jaime

Journal Name: Combinatorial Chemistry & High Throughput Screening
Accelerated Technologies for Biotechnology, Bioassays, Medicinal Chemistry and Natural Products Research

Volume 4 , Issue 8 , 2001

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The complexation of p-tert-butylphenyl p-tert-butylbenzoate, N- (p-tert-butylphenyl)-p-tert-butylbenzamide and a bisadamantyl-phosphate derivative with a beta-cyclodextrin derivative formed by two cyclodextrin units linked by a disulfide bridge on one of the C6 atoms have been studied by computational methods (free energy perturbation (FEP) and Molecular Mechanics / Poisson Bolzmann Surface Area (MM / PBSA)). The calculated relative free energies of the amide and ester are in good agreement with experiment only for MM / PBSA and not for FEP. Only MM / PBSA was applied to the bisadamantyl-phosphate complex and its calculated association free energy was calculated to be similar to that of the ester, which is consistent with the experimental tendencies.

Keywords: beta Cyclodextrin Derivatives, methods free energy perturbation fep, Molecular Mechanics / Poisson Bolzmann Surface Area, Molecular dynamics

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Article Details

Year: 2001
Page: [605 - 611]
Pages: 7
DOI: 10.2174/1386207013330689
Price: $65

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