Move over COVID, Tuberculosis Is Once again the Leading Cause of Death from a Single Infectious Disease
Journal of Medicinal Chemistry,
Journal Year:
2024,
Volume and Issue:
67(24), P. 21633 - 21640
Published: Dec. 9, 2024
Language: Английский
Exploring the Chemistry and Applications of Thio-, Seleno-, and Tellurosugars
Molecules,
Journal Year:
2025,
Volume and Issue:
30(9), P. 2053 - 2053
Published: May 5, 2025
Given
the
crucial
roles
of
carbohydrates
in
energy
supply,
biochemical
processes,
signaling
events
and
pathogenesis
several
diseases,
development
carbohydrate
analogues,
called
glycomimetics,
is
a
key
research
area
Glycobiology,
Pharmacology,
Medicinal
Chemistry.
Among
many
structural
transformations
explored,
replacement
endo-
exocyclic
oxygen
atoms
by
carbon
(carbasugars)
or
heteroatoms,
such
as
nitrogen
(aza-
iminosugars),
phosphorous
(phosphasugars),
sulfur
(thiosugars),
selenium
(selenosugars)
tellurium
(tellurosugars)
have
garnered
significant
attention.
These
isosteric
substitutions
can
modulate
bioavailability,
stability,
bioactivity,
while
introducing
new
properties,
redox
activity,
interactions
with
pathological
lectins
enzymes,
cytotoxic
effects.
In
this
manuscript
we
focused
on
three
major
families
glycomimetics:
thio-,
seleno-,
tellurosugars.
We
provide
comprehensive
review
most
relevant
synthetic
pathways
leading
to
primarily
at
endocyclic
glycosidic
positions.
The
scope
includes
metal-catalyzed
reactions,
organocatalysis,
electro-
photochemical
transformations,
free-radical
automated
syntheses.
Additionally,
mechanistic
insights,
stereoselectivity,
biological
properties
are
also
discussed.
diversity
promising
bioactivities
these
glycomimetics
underscore
their
significance
area.
Language: Английский
Switching Residues: A Platform for the Synthesis of Fidaxomicin Antibiotics
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
64(7)
Published: Nov. 25, 2024
Peripheral
modification
is
often
the
main
approach
to
optimize
natural
products
for
improved
biological
activity
or
desired
physicochemical
properties.
This
procedure
inevitably
increases
molecular
weight,
accompanied
by
undesired
increased
lipophilicity.
Removing
structural
elements
from
not
always
tolerated.
also
case
antibiotic
fidaxomicin
(Fdx),
where
every
component
has
been
shown
be
crucial
activity.
In
this
work,
we
demonstrate
how
residue
switching
can
maintain
of
Fdx
derivatives
replacing
rhamnoside-dichlorohomoorsellinate
moiety
with
smaller,
more
polar
building
blocks.
We
used
palladium-catalysed
allylic
substitution
selectively
install
N-nucleophiles
on
core
Fdx.
The
new
were
designed
mimic
binding
bacterial
RNA
polymerase.
Evaluation
against
Mycobacterium
tuberculosis,
Clostridioides
difficile,
and
Gram-negative
model
organism
Caulobacter
crescentus
demonstrated
that
newly
introduced
residues
restore
activity,
which
was
further
supported
on-target
polymerase
assays.
combined
an
organocatalysed
novioside
acylation
protocol
enable
functionalisation
two
vectors
in
one
pot.
platform
greatly
expands
accessible
chemical
space
enables
future
development
systemic
antibiotics.
Language: Английский