Journal of Agricultural and Food Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 10, 2024
Quinazoline
compounds
have
gained
significant
attention
in
the
fields
of
agriculture
and
chemistry
due
to
their
diverse
activities.
In
this
study,
we
focused
on
a
series
quinazoline
derivatives
(4a–l).
The
objectives
involved
multiple
aspects,
including
preparation,
evaluation
agricultural
bioactivity
against
maize
aphid
(Rhopalosiphum
maidis),
estimation
structure–activity
relationships
(SAR),
conducting
molecular
docking
analysis.
results
bioactivities
revealed
that
compound
(4b)
possesses
highest
insecticidal
activity,
other
good
potential
as
agents.
We
conducted
SARs
also
investigation
elucidate
binding
modes
interactions
these
with
target
proteins
relevant
bioactivity.
provided
valuable
information
affinities
interactions,
aiding
rationalization
observed
trends.
enzyme,
acetylcholinesterase
(AChE),
was
docked
12
synthetic
Among
compounds,
(4b),
(4i),
(4e)exhibited
affinity,
scores
(S)
−7.96,
−7.83,
−7.73
kcal/mol,
respectively.
They
were
followed
by
(4d)
(S
=
−7.57
kcal/mol),
(4c)
−7.53
(4g)
−7.34
(4f)
−7.23
(4h)
−7.14
(4k)
−6.61
(4j)
−6.57
(4a)
−6.28
finally
(4l)
−6.01
kcal/mol).
These
shown
variety
within
2ACE
active
site,
evidenced
protein–ligand
configurations.
This
study
gives
evidence
those
AChE-inhibitory
capabilities
and,
hence,
may
be
used
for
AChE-targeting
development.
Also,
findings
highlight
agents
provide
insights
design
development
some
enhanced
crop
protection.
Scientific Reports,
Journal Year:
2023,
Volume and Issue:
13(1)
Published: Nov. 6, 2023
Abstract
Although
crop
plants
provide
the
majority
of
human
food,
pests
and
insects
frequently
cause
huge
economic
losses.
In
order
to
develop
innovative
insecticidal
compounds
with
low
toxicity
a
positive
environmental
impact,
we
developed
new
N
-(4-sulfamoylphenyl)-1,3,4-thiadiazole-2-carboxamide
derivatives
(
2–12
).
With
use
spectroscopic
techniques
elemental
data,
chemical
structure
these
was
meticulously
clarified.
The
toxicological
biological
effects
synthesized
compound
cotton
leafworm
Spodoptera
littoralis
(Boisduval,
1833)
under
laboratory
conditions
were
also
investigated.
Regarding
determined
LC
50
values,
3,
7,
8
,
10
showed
most
potent
toxic
effect
values
29.60,
30.06,
27.65
29.01
ppm,
respectively.
A
molecular
docking
investigation
twelve
synthetic
(from
2
12
)
performed
against
AChE
(Acetylcholinesterase).
There
wide
range
binding
affinities
shown
by
compounds.
This
work
suggests
that
substances
may
have
inhibitory
properties,
it
be
possible
further
explore
them
in
process
creating
pesticides
target
AChE.
Applied Organometallic Chemistry,
Journal Year:
2023,
Volume and Issue:
38(1)
Published: Nov. 1, 2023
The
aim
of
the
present
framework
is
to
synthesize
and
characterize
new
cobalt(II)
(C1),
nickel(II)
(C2),
copper(II)
(C3)
mixed‐ligand
complexes
incorporating
bioactive
8‐hydroxyquinoline
moiety,
with
synthesized
2‐(1
H
‐benzimidazol‐2‐yl)guanidine
(BG)
ligand,
for
investigating
their
antibacterial,
antifungal,
anti‐inflammatory
potential.
metal
structure
had
been
elucidated
by
use
a
wide
range
methods,
including
elemental
analysis,
Fourier
transform
infrared
(FT‐IR),
mass
spectra,
UV–vis
magnetic
susceptibility,
thermogravimetric
(TG)
molar
ratio
technique
stoichiometry
analysis.
resulted
were
found
have
octahedral
structures
in
M:BG:Qu
as
1:1:2.
Density
functional
theory
(DFT)
used
determine
optimal
molecular
quantum
chemical
properties
each
material.
After
that,
we
looked
into
complexes'
antibacterial
testing
them
vitro.
disc
diffusion
test
showed
that
far
more
potent
against
bacteria/fungi
than
original
ligands.
egg
albumin
denaturation
candidates
free
ligands
comparable
standard
reference.
Molecular
docking
analysis
5JQ9,
6CLV,
cyclooxygenase‐2
(COX‐2;
5IKT)
confirmed
bioactivity
behavior
complexes.
C3
has
greatest
binding
affinity
among
tested.
These
findings
proposed
could
form
basis
future
antibiotics
candidates.
Finally,
vitro
activities
reviewed
relation
DFT
data.
Bulletin of the Chemical Society of Ethiopia,
Journal Year:
2023,
Volume and Issue:
38(1), P. 147 - 166
Published: Nov. 29, 2023
The
present
framework
has
as
its
goal
the
design
and
synthesis
characterization
of
new
mononuclear
1:1:1
(M:L:Q)
mixed-ligand
complexes,
including
FeLQ,
CoLQ,
NiLQ,
CuLQ,
ZnLQ.
"L,"
is
4-[(4-oxo-4,5-dihydro-1,3-thiazol-2-yl)hydrazono]methylphenyl
4-methylbenzenesulfonate,
while
"Q,"
8-hydroxy
quinoline.
According
to
findings,
L
Q
ligands
each
play
role
a
neutral
bi-dentate
NN
monobasic
ON
ligand,
respectively.
findings
demonstrated
an
octahedral
shape.
density
functional
theory
(DFT)
technique
was
employed,
quantum
chemical
descriptors
were
assessed,
optimize
molecular
structure
compounds.
An
in
vitro
investigation
carried
out
investigate
antibacterial
antifungal
activities
activity
metal
complexes
potential
candidates
for
use
antibiotics
antifungals
much
greater
than
that
their
free
ligands.
in-silico
inhibition
1fj4
protein
investigated
using
docking.
ZnLQ
complex
one
inhibited
with
greatest
degree
success.
fact
this
case
lends
credence
notion
these
compounds
have
function
launchpads
development
classes
antibiotics.
KEY
WORDS:
Metal
Schiff-base,
Antimicrobial,
DFT,
Molecular
docking
Bull.
Chem.
Soc.
Ethiop.
2024,
38(1),
147-166.
DOI:
https://dx.doi.org/10.4314/bcse.v38i1.12
Bulletin of the Chemical Society of Ethiopia,
Journal Year:
2024,
Volume and Issue:
38(2), P. 325 - 346
Published: Jan. 23, 2024
New
2-[(4-[(4-methylphenyl)sulfonothioyl)methylene]aminobenzoic
acid
ligand-Co(II),
Ni(II),
and
Cu(II)
complexes
are
synthesized
characterized
in
this
article.
Elemental
analysis,
mass
spectroscopy,
conductivity
tests,
magnetic
susceptibility,
Fourier
transform
infrared
thermogravimetric
electronic
absorption
density
functional
theory
calculations
were
used
to
determine
the
coordination
mode,
geometry
of
compounds.
The
Schiff-base
ligand
was
shown
be
mono-negatively
charged
coordinate
metal
ions
a
bi-dentate
mode
through
azomethine
nitrogen
(-CH=N-)
carboxylic
Oxygen
(-COOH).
Density
(DFT)
performed
addition
experimental
data
assess
most
probable
structures
complexes.
In
addition,
biological
activities
these
compounds
evaluated
by
vitro
antibacterial
antifungal
assays.
These
novel
Co(II),
active
against
wide
variety
microorganisms,
including
Gram-positive
Gram-negative
bacteria,
as
well
fungi.
Following
that,
molecular
docking
analyze
complexes'
interactions
with
bacterial
proteins,
validating
therapeutic
potential
metal-containing
compounds.
KEY
WORDS:
Metal
complexes,
Schiff-base,
DFT,
Antibacterial,
Antifungal,
Molecular
docking
Bull.
Chem.
Soc.
Ethiop.
2024,
38(2),
325-346.
DOI:
https://dx.doi.org/10.4314/bcse.v38i2.5
Journal of Taibah University for Science,
Journal Year:
2024,
Volume and Issue:
18(1)
Published: May 12, 2024
2-Guanidinobenzimidazole
(BIG)
and
Imidiazole
(I)
ligands
were
utilized
to
synthesize
Cu(II),
VO(II),
Ag(I),
Pd(II)
as
mixed
ligand
complexes.
All
studied
molecules
characterized
through
various
spectral,
analytical
computational
studies
find
out
their
chemical
structure.
TGA
was
applied
identify
the
occurrence
of
H2O
besides
mono-nuclear
property
isolated
These
complexes
proved
DFT
study
confirm
coordinating
site
that
proposed
displays
optimal
three-dimensional
structures
compounds.
The
binding
affinity
tested
with
CT-DNA
has
been
agarose
gel,
electronic
spectroscopy
viscosity
measurements.
Furthermore,
might
bind
electrostatically
exterior
contact,
replacement,
intercalation
groove
surface
good
affinity.
In-vitro
anti-bacterial,
anti-fungi,
cytotoxic
antioxidant
activities
are
performed
for
all
MOE-docking
simulation
results
indicate
promising
inhibitory
features
BIGIPd
complexes,
in
agreement
in-vitro
results.
ACS Omega,
Journal Year:
2024,
Volume and Issue:
9(6), P. 6466 - 6481
Published: Feb. 1, 2024
The
main
target
of
the
current
framework
is
designing
and
synthesizing
novel
iron(III),
cobalt(II),
cupper(II)
complex
compounds
emanating
from
bioactive
nucleus,
4-hydroxy-2H-pyrano[3,2-c]quinoline-2,5(6H)-dione
ligand,
to
enhance
comprehension
as
potential
antibacterial,
antifungal,
antioxidant
alternatives
by
means
using
DFT
calculations
molecular
docking
investigation.
Thus,
new
complexes
had
been
synthesized
characterized
various
analytical
techniques,
including
elemental
analysis,
infrared
spectroscopy,
mass
spectrometry,
UV
conductivity,
magnetic
testing,
well
thermal
analysis.
ligand
exhibits
monobasic
bidentate
OO
donor
properties
toward
metal
core,
shown
its
spectroscopic
characteristics.
use
analysis
techniques
allows
for
identification
characterization
water
molecules
present
inside
complexes,
determination
their
distribution
patterns.
structures
free
have
verified
through
density
functional
theory
(DFT)
simulations.
These
simulations
also
provide
a
valuable
understanding
quantum
chemical
characteristics
associated
with
these
structures.
In
vitro
experiments
were
conducted
evaluate
antioxidant,
antifungal
corresponding
compounds.
DATA
revealed
that
heightened
biological
efficacy
related
unbound
ligand.
Furthermore,
was
done
understand
interactions
between
studied
proteins
derived
Escherichia
coli
(pdb
ID:
2vf5),
Aspergillus
flavus
3cku),
humans
5IJT),
which
are
considered
be
significant
in
drug
design.
Lastly,
correlation
efficacies
data
analyzed.
Molecular Diversity,
Journal Year:
2023,
Volume and Issue:
28(1), P. 249 - 270
Published: Nov. 9, 2023
Abstract
Introduction
The
coronavirus
disease
2019
(COVID-19)
pandemic
has
caused
a
global
health
crisis.
severe
acute
respiratory
syndrome
2
(SARS-CoV-2)
is
highly
contagious
virus
that
can
cause
illness.
There
no
specific
treatment
for
COVID-19,
and
the
development
of
new
drugs
urgently
needed.
Problem
statement
SARS-CoV-2
main
protease
(M
pro
)
enzyme
critical
viral
plays
vital
role
in
replication.
inhibition
M
be
an
effective
strategy
developing
COVID-19
drugs.
Methodology
An
efficient
operationally
simple
convenient
green
synthesis
method
had
been
done
towards
series
novel
spiro-
N
-(4-sulfamoylphenyl)-2-carboxamide
derivatives,
ethanol
at
room
temperature
conditions,
up
to
90%
yield.
molecular
structures
synthesized
compounds
were
verified
using
spectroscopic
methods.The
title
subjected
silico
analysis,
including
Lipinski’s
rule
ADMET
prediction,
addition
pharmacophore
modeling
docking
against
active
site
target
(6LU7).
Furthermore,
both
top-ranked
(5
6)
standard
Nirmatrelvir
DFT
analysis.
Findings
exhibited
good
binding
affinity
Mpro
enzyme,
with
energy
scores
ranging
from
−
7.33
kcal/mol
(compound
6
7.22kcal/mol
5
6.54
(compounds
8
9
).
(
lower
HOMO–LUMO
difference
(ΔE)
than
drug
Nirmatrelvir.
This
highlights
potential
relevance
charge
transfer
level.
Recommendation
These
findings
suggest
spiro-N-(4-sulfamoylphenyl)-2-carboxamide
derivatives
could
candidates
development.
To
confirm
these
drugs'
antiviral
efficacy
vivo,
more
research
required.
With
very
little
possibility
failure,
this
proven
aid
search
pandemic's
desperately
needed
medications.
Graphical
abstract