ChemistrySelect,
Journal Year:
2024,
Volume and Issue:
9(46)
Published: Dec. 1, 2024
Abstract
In
this
work,
a
novel
strategy
for
the
straightforward
synthesis
of
isoxazolo[5,4‐
b
]pyridines
from
one‐pot
reaction
aryl
glyoxal,
5‐aminoisoxazoles,
and
malononitrile
under
ultrasound
(US)
irradiation
is
described.
reaction,
acetic
acid
has
dual
role
as
solvent
catalyst.
The
advantages
include
easy
purification
products,
raw
materials
with
access,
short
time,
high
efficiency,
green
conditions
by
utilizing
an
energy
source
using
Lewis
acid.
achieved
yields
broad
substrate
scope,
successfully
producing
twelve
diverse
derivatives.
methodology
capitalizes
on
benefits
sonochemistry,
which
accelerates
rates
improves
selectivity
while
minimizing
waste.
proposed
mechanism
involves
series
reactions
including
Knoevenagel
condensation,
Michael
addition,
subsequent
cyclization
processes.
This
approach
not
only
streamlines
complex
heterocycles
but
also
aligns
environmentally
friendly
practices.
RSC Advances,
Journal Year:
2024,
Volume and Issue:
14(8), P. 5547 - 5565
Published: Jan. 1, 2024
Spiro
heterocycle
frameworks
are
a
class
of
organic
compounds
that
possesses
unique
structural
features
making
them
highly
sought-after
targets
in
drug
discovery
due
to
their
diverse
biological
and
pharmacological
activities.
ChemistryOpen,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 9, 2024
Abstract
Heterocycles
are
a
vital
class
of
compounds
in
numerous
fields,
including
drug
discovery,
agriculture,
and
materials
science.
Efficient
methods
for
the
synthesis
heterocycles
remain
critical
meeting
demands
these
industries.
Recent
advances
multicomponent
reactions
(MCRs)
utilizing
2‐aminobenzothiazole
(ABT)
have
shown
promising
results
formation
heterocycles.
The
versatility
this
context
has
enabled
rapid
efficient
construction
diverse
heterocyclic
structures.
Various
synthetic
methodologies
involving
discussed,
highlighting
its
importance
as
valuable
building
block
complex
potential
applications
discovery
material
science
also
explored.
Overall,
review
provides
comprehensive
overview
current
state
research
field
offers
insights
into
future
directions
area
study.
We
highlight
ABT
versatile
sustainable
starting
via
MCRs,
with
significant
implications
chemical
industry.
ChemistrySelect,
Journal Year:
2024,
Volume and Issue:
9(30)
Published: Aug. 6, 2024
Abstract
This
review
provides
an
overview
of
the
recent
advances
in
synthesis
diverse
heterocyclic
compounds
using
thiosemicarbazide
as
a
key
building
block
via
multicomponent
reactions.
Thiosemicarbazide
is
versatile
reagent
that
has
gained
significant
attention
organic
due
to
its
ability
participate
reactions
for
efficient
and
sustainable
construction
assembly
novel
bioactive
molecules
pharmaceuticals.
discusses
potential
applications
future
directions
this
rapidly
evolving
area
research.
It
valuable
insights
into
innovative
approaches
heterocycles
thiosemicarbazide,
showcasing
significance
modern
chemistry
In
summary,
current
state
art,
highlighting
use
reported
between
2015
early
2024.
RSC Advances,
Journal Year:
2025,
Volume and Issue:
15(5), P. 3928 - 3953
Published: Jan. 1, 2025
This
review
studies
magnetically
recoverable
catalysts
designed
for
the
efficient
multicomponent
synthesis
of
organosulfur
compounds.
These
enhance
process
by
combining
efficiency
with
environmental
sustainability.
Molecules,
Journal Year:
2024,
Volume and Issue:
29(14), P. 3366 - 3366
Published: July 17, 2024
This
work
describes
the
synthesis,
characterization,
and
in
vitro
silico
evaluation
of
biological
activity
new
functionalized
isoxazole
derivatives.
The
structures
all
compounds
were
analyzed
by
IR
NMR
spectroscopy.
4c
4f
further
confirmed
single
crystal
X-ray
their
compositions
unambiguously
determined
mass
spectrometry
(MS).
antibacterial
effect
isoxazoles
was
assessed
against
Escherichia
coli,
Bacillus
subtilis,
Staphylococcusaureus
bacterial
strains.
Isoxazole
4a
showed
significant
E.
coli
B.
subtilis
compared
to
reference
antibiotic
drugs
while
4d
also
exhibited
some
effects.
molecular
docking
results
indicate
that
synthesized
exhibit
strong
interactions
with
target
proteins.
Specifically,
displayed
a
better
affinity
for
S.
aureus,
comparison
drugs.
dynamics
simulations
performed
on
strongly
support
stability
ligand–receptor
complex
when
interacting
active
sites
proteins
from
subtilis.
Lastly,
Absorption,
Distribution,
Metabolism,
Excretion
Toxicity
Analysis
(ADME-Tox)
reveal
molecules
have
promising
pharmacokinetic
properties,
suggesting
favorable
druglike
properties
potential
therapeutic
agents.
Results in Chemistry,
Journal Year:
2024,
Volume and Issue:
7, P. 101448 - 101448
Published: Jan. 1, 2024
Present
work
elicits
synthesis
of
novel
azepane-acridines,
assisted
by
titania-encapsulated
γFe2O3
nanoparticles
supported
on
Vitamin
B1
(γFe2O3@TiO2-Vitamin
B1)
as
a
new
magnetically
recyclable
heterogeneous
nano-catalytic
system.
The
reaction
was
accomplished
using
biocompatible
PEG-200
(Polyethylene
glycol)
the
solvent
under
ultrasonic
irradiations.
structure
and
morphology
synthesized
magnetic
nano-catalyst
ascertained
based
data
obtained
from
powder
X-ray
diffraction
(PXRD),
field
emission
scanning
electron
microscopy
(FE-SEM),
energy-dispersive
spectroscopy
(EDAX),
Fourier
transform
infrared
(FT-IR),
VSM
(Vibrating-sample
magnetometer)
TGA,
DTA
DTG
techniques.
characteristic
size
prepared
heterogenous
is
34.62
nm.
Also,
structures
all
azepane-acridine
heterocyclic
scaffolds
were
corroborated
through
spectro-analytical
data.
These
compounds
found
to
have
remarkable
biological
activity
profile
against
bacterium
S.aureus
with
IC50
values
ranging
1.41
2.75
µg/mL.
Further,
these
in-vitro
studies
correlated
statistically
significant
2D/3D-
QSAR
models.
best
2D-QSAR
models
reveal
positive
influence
slogp
Vander
Waal
Surface
area
descriptors
while
negative
polar
surface
T_2_N_6
bioactivity
ideal
squared
correlation
coefficient
(r2),
cross-validated
(q2)
high
Fisher
ratio
(F-test)
indicating
model
be
relevant.
finest
3D-QSAR
MLR
(Multiple
Linear
Regression
method)
provide
practical
information
in
characterization
differentiation
compound
binding
sites.
Moreover,
molecular
docking
performed
evaluate
antifungal
black
fungi
crystal
protein,
bioassay
scores.
Atom
economy,
feasibility,
cost-effectiveness,
minimum
time,
High
yields,
an
additive-free
process
are
foremost
advantages
developed
methodology.