Tomáš Hudlický: Research
Green Chemistry
We have made environmentally benign reaction design one
of our central themes in the Hudlický group. The conversion of toxic
aromatic waste into defined value-added products by chemoenzymatic
means has been applied very successfully in our group and has
yielded many total synthesis as well as commercial applications.
We have also proposed a
parameter (effective mass yield EMY) that allows the quantification of
the degree of environmentally benignity of a synthetic sequence.
Amaryllidaceae Alkaloids
Members of the amaryllidaceae alkaloids (e.g.
Pancratistatin) are known to possess high anti-tumor activities,
which makes them very interesting targets for the synthetic organic
chemist.
In the last years we
have completed a total synthesis of (-)-pancratistatin and
(-)narciclasine, both by chemoenzymatic means.
We are currently working
on a total synthesis of 7-deoxy-pancratistatin as well as on the
optimization of previous approaches, with the overall goal of preparing
those alkaloids in less than ten steps.
Morphine
A
long term goal in the Hudlicky group has been a enantioselective
total synthesis of morphine and the morphinan skeleton.
It is envisioned that
short synthetic route to the title alkaloid will open doors for the
preparation of a variety of analogs which are not easily accessible by
functional group transformation starting from the parent alkaloid
itself.
Inositols
Our group has successfully prepared several of the nine
Inositols as well as di-and oligomeric analogues. We have proven
that these oligomers possess very interesting properties like their
helical tertiary structure.
We are currently working
on the preparation of amino Inositol derivatives which are expected to
exhibit similar structural features as well as enzyme inhibition
properties.
Electrochemistry
As a part of environmentally
benign reaction design the Hudlicky group has exploited the
possibility of substituting steps which include toxic reagents by
electrochemical means. We have successfully shown that
transformations like mCPBA epoxidation and tetrabutyltinhydride
reductions can also be achieved by electrochemical
methods.
We are also working on
the selective removal of protecting groups by electrochemistry as well
as electrochemical cyclizations.
Microbial hydroxylation
Chiral synthons obtained by microbial di-hydroxylation of
halogenated aromatic compounds have been applied as starting
materials for a variety of syntheses in our group.
We are currently also
studying the substrate specificity of the enzymes responsible for this
transformation as well as the influence of remote chiral centers on the
outcome of the hydroxylation reaction.
Other Research Interests
Besides the topics mentioned above, our group is active in a
variety of fields. This includes radical cyclizations, Diels Alder
chemistry, approaches towards other natural products (e.g.
TaxolTM) and many more.
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