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Full-Text Articles in Physical Sciences and Mathematics
Synthesis Of A Small Molecule Nitrosocysteine Inhibitor To Reduce The Activity Of Caspase-1, Catherine A. Shamblen, Caitlin E. Karver
Synthesis Of A Small Molecule Nitrosocysteine Inhibitor To Reduce The Activity Of Caspase-1, Catherine A. Shamblen, Caitlin E. Karver
DePaul Discoveries
Caspase-1 is an enzyme that is overactive in autoimmune and autoinflammatory diseases cleaving pro-interleukin-1β to the cytokine interleukin-1β (IL-1β), which leads to inflammatory symptoms. The inhibition of caspase-1 will cause a decrease in the concentration of interleukin-1β (IL-1β), resulting in the reduction of inflammatory symptoms. Recent research has revealed that the appending of a nitric oxide (NO) or nitroxyl (HNO) donating group to non-steroidal anti-inflammatory drugs (NSAIDs) reduced, or avoided, the side effects caused by currently available treatments. A small molecule based on a known caspase-1 inhibitor with a nitrosocysteine appended on was synthesized to look at the effect of …
Enzyme-Mediated And Mechanistic Investigations Of Tetrahydroisoquinoline Synthesis Through The Pictet-Spengler Reaction, Jordan Elise Fauser
Enzyme-Mediated And Mechanistic Investigations Of Tetrahydroisoquinoline Synthesis Through The Pictet-Spengler Reaction, Jordan Elise Fauser
College of Science and Health Theses and Dissertations
Tetrahydroisoquinolines (THI) are biologically active natural products with applications to a variety of diseases. These compounds also act as precursors for other pharmacologically active natural products. In this investigation, a new synthetic approach for generation of halogenated THIs was proposed. Using cross-linked tyrosinase aggregate, halogenated tyrosine and tyramine were oxidized to form halogenated catechols such as halogenated L-DOPA and dopamine. In a one-pot synthetic approach, the enzyme oxidation reaction was coupled to the Pictet-Spengler reaction, through the addition of an aldehyde, to generate halogenated THIs. The Pictet-Spengler reaction was catalyzed by the phosphate buffer in the reaction solution. The role …