1 research outputs found
Substituent Effect on the Structural Behavior of Modified Cyclodextrin: A Molecular Dynamics Study on Methylated β-CDs
A series of methylated and non-methylated β-cyclodextrin
(β-CD) structures in three macrocyclic configurations (<i>a</i>–<i>c</i>) were studied with molecular
dynamics (MD) simulations to elucidate the dynamic behavior of the
different CD structures using a continuum water model with the AMBER*
force field. A set of parameters were defined to describe the geometric
dimensions of the CD, such as its cavity shape, the upper and lower
rim sizes, and the tilting of each of the glucose rings. Correlation
analyses between the different parameters were carried out, and they
have provided insights into the different dynamic behaviors for the
different CD structures. Detailed analyses on the crystal structures
of the different methylated and non-methylated β-CD complexes
were also carried out using the defined parameters. Correlation of
parameters from crystal structures and MD simulations has allowed
us to identify the effect that crystal packing/guest inclusion has
on the CD geometries. The overall analysis approach can be a useful
tool for other related macrocyclic structures, such as modified α-,
β-CDs or even calixarenes