Thiadiazole
(THD)
derivatives
are
famous
for
their
exceptional
chemical
properties
and
versatile
biological
activities.
In
this
work,
we
report
computational
investigations
of
the
structure,
reactivity,
binding
affinity
three
1,3,4-THD
(THDs)
toward
SARS-CoV-2
main
protease
(Mpro).
Hirshfeld
surface
(HS)
analyses
carried
out
in
conjunction
with
topological
calculations
context
quantum
theory
atoms
molecules
(QTAIM)
reduced
density
gradient
(RDG)
to
unravel
nature
magnitude
noncovalent
interactions
that
contribute
maintaining
these
THDs.
The
approaches
consistently
indicate
titled
THDs
mainly
stabilized
by
weak
intramolecular
H…H,
C-H…π,
C-H…N,
N-H..H
monomeric
forms,
while
dimers
also
exhibit
intermolecular
π…π
stacking
T-shaped
contacts.
addition,
atomic
charges,
frontier
molecular
orbitals
(FMOs),
Fukui
functions,
electrostatic
potential
(MEP)
reveal
pyrrolic
H
atom
(ring
F)
imidazole
N
E)
preferred
sites
nucleophilic
electrophilic
attacks,
respectively.
Finally,
docking
dynamics
simulations
demonstrate
remarkable
profile
Mpro,
which
can
be
related
inhibitory
activity.
Expert Opinion on Drug Metabolism & Toxicology,
Journal Year:
2024,
Volume and Issue:
20(4), P. 181 - 195
Published: March 14, 2024
Pharmacokinetic
parameters
assessment
is
a
critical
aspect
of
drug
discovery
and
development,
yet
challenges
persist
due
to
limited
training
data.
Despite
advancements
in
machine
learning
in-silico
predictions,
scarcity
data
hampers
accurate
prediction
candidates'
pharmacokinetic
properties.
Journal of Biomolecular Structure and Dynamics,
Journal Year:
2022,
Volume and Issue:
41(20), P. 11122 - 11136
Published: Dec. 28, 2022
AbstractTwo
novel
thiazole
derivatives,
ethyl
5-((4-fluorophenyl)carbamoyl)-thiazole-4-carboxylate
(2b)
and
5-(p-tolylcarbamoyl)thiazole-4-carboxylate
(6b)
have
been
synthesized,
their
crystal
structures
determined
by
X-ray
diffraction.
To
rationalize
structure,
reactivity
druggability,
we
performed
a
series
of
separate,
but
complementary
studies.
Hirshfeld
surface
2D-fingerprint
plots
were
first
scrutinized
to
qualitatively
unveil
all
the
intermolecular
interactions
that
ensure
packing.
Moreover,
topological
electron
density
parameters
established
from
quantum
theory
atoms-in-molecules
(QTAIM)
Reduced
Density
Gradient
(RDG)
later
relied
on
characterize
chemical
bonding
these
species,
in
terms
nature
magnitude
noncovalent
developed
within
monomeric
dimeric
forms.
In
both
structures,
C-H…O
hydrogen
bonds
are
found
be
stronger
than
other
interactions.
Furthermore,
H…H
contacts
non-conventional
C–H…O
exhibit
closed
shell
nature,
play
crucial
role
stability
thiazoles.
The
isosurfaces
region
furnished
NCI
molecular
diagram
signifies
existence
weak
Finally,
potential
inhibitory
activity
titled
compounds
drug-likeness
demonstrated
docking
ADME-T
calculations
respectively.
Both
adhere
Lipinski's
rule
five
present
encouraging
pharmacokinetic
properties
safety
profiles.Communicated
Ramaswamy
H.
SarmaKeywords:
Thiazolestructure
elucidationDFTdockingADME-T
AcknowledgmentAuthors
thankful
IIT
Madras
for
collecting
intensity
data.
K.
Ravi
Singh,
thanks
IoE,
Vijnana
Bhavan,
University
Mysore,
financial
support.
B.K.
Isamura
is
grateful
Prof
Kevin
Lobb
having
provided
access
'carbon'
cluster
at
Rhodes
University.Disclosure
statementNo
conflict
interest
was
reported
author(s).
ACS Infectious Diseases,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 1, 2024
Herein,
we
describe
the
design
and
synthesis
of
a
series
C-5-substituted
diazenyl
derivatives
uracil,
exhibiting
selective
potent
antileishmanial
but
not
antibacterial
or
antifungal
activity.
The
formation
substituted
was
confirmed
by
using
FTIR,
Scientific Reports,
Journal Year:
2023,
Volume and Issue:
13(1)
Published: June 29, 2023
Coronavirus
disease
2019
(COVID-19)
is
a
recent
pandemic
that
caused
serious
global
emergency.
To
identify
new
and
effective
therapeutics,
we
employed
drug
repurposing
approach.
The
poly
(ADP
ribose)
polymerase
inhibitors
were
used
for
this
purpose
repurposed
against
the
main
protease
(Mpro)
target
of
severe
acute
respiratory
syndrome
2
(SARS-CoV-2).
results
from
these
studies
to
design
compounds
using
'Grow
Scaffold'
modules
available
on
Discovery
Studio
v2018.
three
designed
compounds,
olaparib
1826
1885,
rucaparib
184
demonstrated
better
CDOCKER
docking
scores
Mpro
than
their
parent
compounds.
Moreover,
adhered
Lipinski's
rule
five
synthetic
accessibility
score
3.55,
3.63,
4.30
1826,
184,
respectively.
short-range
Coulombic
Lennard-Jones
potentials
also
support
potential
binding
modified
Mpro.
Therefore,
propose
as
novel
SARS-CoV-2
inhibitors.
A
novel
coronavirus
strain
called
SARS-CoV-2
first
appeared
in
China
December
2019.
Natural
products
are
significant
sources
of
prospective
and
new
antiviral
medications,
drug
research
has
advanced
significantly
recent
years.
The
current
study
allows
us
to
select
specific
components
olive
oil
that
thought
be
anti-SARS-CoV-2
assess
their
impact
on
vitro.
26
compounds
were
obtained
from
the
PubChem
database
docked
against
RdRP
(pdb
id:
6XQB)
by
autodock
vina
1
2
linux
x86
software.
Cytotoxicity
activity
measured
MTT
assay
protocol
(the
crystal
violet
method).
findings
revealed
range
compound's
molecular
docking
binding
affinity
score
target
was
5.9–18.2
kcal/mol.
best
compound
is
apigenin
since
it
a
low
energy
value
−18.2
kcal/mol,
followed
taxifolin,
which
an
−14.2
On
other
hand,
molecule
with
lowest
believed
good
one.
Additionally,
Lipinski's
criteria
AD-MET
analysis
supported
created
taxifolin's
status
as
secure
pharmaceutical
substance.
Also,
taxifolin
showed
moderate
effectiveness
vitro,
SI
values
9.7
8.79,
respectively,
compared
oil's
crude
9.57.
According
our
results,
we
think
essential
source
cutting-edge
drugs,
especially
compounds.