To understand the catalytic mechanism of an enzyme, it is crucial to determine the crystallographic structures corresponding to the individual reaction steps. Here, we report two crystal structures of enzyme-substrate complexes prior to reaction initiation: tropinone reductase-II (TR-II)-NADPH and TR-II-NADPH-tropinone
Enantioselective synthesis of unnatural (S)-(+)-cocaine.
J C Lee et al.
The Journal of organic chemistry, 65(15), 4773-4775 (2000-08-26)
Recent work on the biosynthesis of the tropane moiety of cocaine, hyoscamine, scopolamine, and related alkaloids is reviewed. Revision of the generally accepted biosynthetic pathway to these alkaloids is now proposed in the light of new discoveries. New information on
Sulfinimine-derived, enantiopure N-sulfinyl beta-amino ketone ketals on hydrolysis give dehydropyrrolidine ketones that on treatment with (Boc)(2)O/DMAP afford substituted tropinones in good yield.
The Plant journal : for cell and molecular biology, 54(3), 388-401 (2008-01-29)
Tropane alkaloids typically occur in the Solanaceae and are also found in Cochlearia officinalis, a member of the Brassicaceae. Tropinone reductases are key enzymes of tropane alkaloid metabolism. Two different tropinone reductases form one stereoisomeric product each, either tropine for
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.