DFT Based Quantum Chemical Descriptors of 1-Substituted THβC, DHβC, βC Derivatives
Abstract
This research has
focused on the chemical reactivity behavior of N-1 substituted βCCM derivatives
which are isolated from natural or synthetically sources. These compounds as
antitumor agents have an important role in human cancer cell lines as well as antiviral,
antimalarial activity and so on. Geometry optimizations have been conducted by
using DFT method with several basis sets and in 10 different solvent
environments. The Isodensity version of Polarized Continuum Model has been used
to evaluate the solvent effect on chemical stability and its related
properties. We can suggest that global reactivity descriptors can be used to
get the relationship between aromaticity and chemical behavior: the structure
unit 2 and its corresponding substituted structures are the most stable
structures thermodynamically because these structures are more aromatic than
those of the others. The electrostatic potential value on the
electron density surface have changed in following order: 2A (-9.696e-2)
< 0A (-9.689e-2) < 1A
(-9.343e-2) of each
molecule including anthracene 9-yl substituted and have changed as 2 (-0.128)
< 0 (-0.123) < 1 (-0.114) for corresponding
non-substituted structures, at 6311++g(d,p) basis set in water phase. Hopefully,
this paper will provide the useful information on evaluation or explanation of
chemical properties of the antitumor agents used in cancer treatment.
Keywords
Global hardness, electrophilicity, chemical potential, solvent effect, substituent effect
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