The Royal Society of Chemistry eBooks,
Год журнала:
2022,
Номер
unknown, С. 1 - 15
Опубликована: Ноя. 14, 2022
The
selected
research
papers
on
theoretical
aspects
of
nuclear
magnetic
shielding
published
from
1
January
to
31
December
2021
are
shortly
reviewed
in
this
chapter.
Among
the
reported
studies
mainly
density
functional
theory
(DFT)
predictions
for
free
molecules,
as
well
solution,
modeled
by
polarizable
continuum
model
(PCM).
calculations
solids
getting
more
common
period
time.
Due
their
relatively
high
computational
price,
number
ab
initio
and
high-level
calculated
shieldings
is
significantly
lower.
In
several
reports
results
additionally
improved
inclusion
zero-point
vibration
temperature
correction
(ZPVC
TC),
As
before,
most
have
been
performed
using
non-relativistic
approach.
Abstract
Herein,
1‐(2,6‐dibromo‐4‐methyl‐phenoxymethyl)‐benzo[f]chromen‐3‐one
(DBMPBC)
is
chosen
to
be
thoroughly
investigated
in
terms
of
structural,
spectroscopic
(FT‐IR,
FT‐Raman)
and
molecular
electronic
properties
based
on
density
functional
theory
(DFT).
The
title
molecule
synthesized
by
the
reaction
5,6‐benzo‐4‐bromomethylcoumarin
with
2,6‐dibromo‐4‐methylphenol
presence
anhydrous
potassium
carbonate
dry
acetone.
All
computational
studies
for
selected
structure
are
carried
out
at
theoretical
level
DFT/B3LYP/6‐311++G
(d,
p).
theoretically
determined
geometrical
parameters
from
optimized
experimental
values
compared
each
other
confirm
structural
molecule.
vibrational
wavenumbers
studied
FT‐IR
FT‐Raman
spectral
techniques
both
methods
other.
detailed
assignments
assigned
through
potential
energy
distribution
method
VEDA.
MEP
surface
analysis
order
identify
sites
electrophilic
nucleophilic
attack.
Natural
Bond
Orbital
(NBO)
study
significantly
verified
existence
intermolecular
interactions
stability
reactivity
estimated
HOMO‐LUMO
energies.
Molecular
docking
investigations
simulate
inhibitory
impact
against
VEGFR2
(PDB:
2XIR)
PI3K
2RDO)
receptors
anti‐angiogenic
therapy
treatment
NSCLC.
ADMET
toxicity
conducted.
International Journal of Molecular Sciences,
Год журнала:
2023,
Номер
24(20), С. 15414 - 15414
Опубликована: Окт. 21, 2023
To
aid
the
possible
prevention
of
multidrug
resistance
in
tumors
and
cause
lower
toxicity,
a
set
sixteen
novel
dihydropyridine
carboxylic
acids
derivatives
3a-p
were
produced;
thus,
activation
various
ynones
with
triflic
anhydride
was
performed,
involving
nucleophilic
addition
several
bis(trimethylsilyl)
ketene
acetals,
achieving
good
yields
requiring
easy
workup.
The
target
molecules
unequivocally
characterized
by
common
spectroscopic
methods.
In
addition,
two
tested
compounds
(3a,
3b)
selected
to
perform
silico
studies
due
highest
cytotoxic
activity
towards
HCT-15
cell
line
(7.94
±
1.6
μM
9.24
0.9
μM,
respectively).
Employing
theoretical
calculations
density
functional
theory
(DFT)
using
B3LYP/6-311++G(d,p)
showed
that
molecular
parameters
correlate
adequately
experimental
results.
contrast,
predictions
employing
Osiris
Property
Explorer
3a
3b
present
physicochemical
characteristics
would
likely
make
it
an
orally
active
drug.
Moreover,
performance
Docking
proteins
related
apoptosis
pathway
allowed
proposal
which
could
interact
PARP-1
protein.
Pondering
obtained
results
(synthesis,
silico,
activity)
compounds,
they
can
be
judged
as
suitable
antineoplastic
agent
candidates.
Canadian Journal of Physics,
Год журнала:
2024,
Номер
102(12), С. 656 - 670
Опубликована: Авг. 26, 2024
The
1-(3-nitro-phenyl)-5-phenyl-penta-2,4-dien-1-one
(1NP5PP)
molecule
is
subjected
to
detailed
spectroscopic
investigation
by
analyzing
the
spectra
obtained
FT-IR
and
FT-Raman
methods.
computational
analysis
were
performed
at
DFT
level
using
B3LYP/6-311++G(d,
p)
basis
set.
With
support
of
potential
energy
distribution
entire
vibrational
assignment
was
conducted.
A
frontier
molecular
orbital
study
reveals
gap
small
for
molecule.
Molecular
electrostatic
surface
shows
that
highest
electronegative
around
oxygen
atom
in
ethylenic
bridge
electropositive
region
spreads
through
all
hydrogen
atoms
Natural
bond
orbital,
nonlinear
optical
analysis,
Fukui
function
studies
conducted
present
electron
reactive
site
on
analyzed
localization
localized
locator
analysis.
In
docking
interaction
observed
between
MPRO
1NP5PP
ligand
good
degree
inhibition.
above
mentioned
analogy
reflects
has
adequate
biological
properties.
The Royal Society of Chemistry eBooks,
Год журнала:
2022,
Номер
unknown, С. 1 - 15
Опубликована: Ноя. 14, 2022
The
selected
research
papers
on
theoretical
aspects
of
nuclear
magnetic
shielding
published
from
1
January
to
31
December
2021
are
shortly
reviewed
in
this
chapter.
Among
the
reported
studies
mainly
density
functional
theory
(DFT)
predictions
for
free
molecules,
as
well
solution,
modeled
by
polarizable
continuum
model
(PCM).
calculations
solids
getting
more
common
period
time.
Due
their
relatively
high
computational
price,
number
ab
initio
and
high-level
calculated
shieldings
is
significantly
lower.
In
several
reports
results
additionally
improved
inclusion
zero-point
vibration
temperature
correction
(ZPVC
TC),
As
before,
most
have
been
performed
using
non-relativistic
approach.