Abstract: Surface Organometallic Chemistry is an approach to synthesizing heterogeneous catalysts with molecular precision and relies on knowledge of homogeneous organometallic reactions. In our lab, we aim to install active sites on surfaces using oxidative addition of low-valent metal centers to surface functional groups. This strategy is a complementary route to the more common approaches (e.g., protonolysis of metal-ligand bonds by acidic surface sites) taken in surface organometallic chemistry.
Abstract: Human-associated bacteria play a vital role in human health, and microbial imbalance has been linked to a wide range of disease states. However, the ways in which bacteria affect the host at a molecular level remain poorly understood. In order to harness connections between the microbiome and disease to improve human health, we need to know more about the molecules and chemical mechanisms driving host-microbiota interactions.
Abstract: Catalysis is a key technology, since it allows for increased levels of selectivity and efficacy of chemical transformations. While significant progress can be made by rational design or engineered step-by-step improvements, many pressing challenges in the field require the discovery of new and formerly unexpected results. Arguably, the question “How to discover?” is at the heart of the scientific process.
Natural products continue to inspire and serve as the basis of new medicines. They also provide intricate problems that expose limitations in the strategies and methods employed in chemical synthesis. Several strategies and methods that have been developed in our laboratory and applied to the syntheses of architecturally complex natural products will be discussed.
Abstract: Carbohydrates are the most abundant organic molecules on earth and are critical to a myriad of biological processes. The Vanderbilt Laboratory for Glycoscience uses a blend of synthetic organic chemistry and microbiology to elucidate the biological roles of carbohydrates, with a foci on advances in chemical synthesis and learning new mechanistic concepts. Our discussion will be divided into two categories: (1) the synthesis of structurally and biologically compelling complex carbohydrates, and (2) application of the host defense properties of human milk.
Abstract: Nature regulates many biological processes through post-translational modifications that modify protein activity and relay signals through protein networks. Interpretation of how nature uses these modifications will provide new insights to biological regulation, and open new frontiers in the design of therapeutic modalities that mimic nature to treat human disease.
Abstract: Conjugating synthetic polymers to proteins is beneficial in medicine, leading to enhanced materials functional in targeted drug delivery, diagnostics, and as therapeutics. Loading proteins into nanoparticles has similar advantages.
Abstract: Protein-protein complexes are difficult targets for inhibitor design, and therefore, offer a testing ground for new approaches. We are developing a rational design approach that begins by mimicry of protein interfaces by constrained peptides and peptidomimetics. However, direct mimicry of protein interfaces often leads to weak inhibitors. We overcome this inherent limitation by designing nonnatural side chain functionality. The first part of this presentation will discuss the application of our approach to the discovery of inhibitors f