Paul Helquist

Paul Helquist

Synthetic Organic Chemistry Drug Discovery for Rare Diseases

Biography

1984-present
Professor, University of Notre Dame
1984-1986
Professor, State University of New York at Stony Brook
1980-1984
Associate Professor, State University of New York at Stony Brook
1974-1980
Assistant Professor, Department of Chemistry, State University of New York at Stony Brook
1973-1974
Postdoctoral Fellow, Harvard University
1972
Ph.D. in Organic Chemistry, Cornell University
1969
B.A. in Chemistry, University of Minnesota, Duluth

Selected Awards

2011-2012
Tage Erlander Guest Professor of the Swedish National Research Council, University of Gothenburg and University of Stockholm
2010
Faculty Award, University of Notre Dame
2009
Joyce Award for Excellence in Undergraduate Teaching
2005, 2002
Kaneb Teaching Award

Research Interests

Professor Helquist's research group is concerned with two broad areas: (1) the development of new methods in synthetic organic chemistry, including the preparation, structural study, and applications of new transition metal organometallic complexes as catalysts and reagents for asymmetric synthesis; and (2) the structure, synthesis, mechanism of action, and pharmaceutical development of biologically active compounds including antibiotics and antitumor agents, many of which have their origins as natural products. Often we take advantage of the interface between these two areas by applying some of our new methods, reagents, and catalysts in the synthesis of targeted natural products.

We have developed numerous synthetic methods employing iron, nickel, copper, rhodium, palladium, titanium, zirconium, magnesium, lithium, zinc, and samarium compounds as reagents or catalysts. We have employed many of these methods in the synthesis of complex natural products. Coupled with this organometallic work is the rational design of chiral transition metal catalysts through use of molecular mechanics computational techniques. Through use of this approach, we have succeeded in obtaining metal complexes that can be employed in metal-catalyzed reactions to give products with >99% enantiomeric excess.

In the area of total synthesis, our laboratory studies compounds that show promise of being developed into clinically useful antibiotics and anti-cancer agents. For several of the compounds that we study, the full structures have not been determined previously, and we therefore begin our work by employing high-field NMR and molecular mechanics computational techniques to determine the full, three-dimensional structures of these compounds. In the course of then pursuing total syntheses of these compounds, we often develop new methods. With synthetic materials in hand, we study structure-activity relationships and mechanisms of action. We employ this knowledge to obtain modified forms of the natural products to improve therapeutic properties, leading to the development of new pharmaceutical products. Some of our most recent derivatives are highly potent antibiotics that are active against a range of bacteria that are resistant to other classes of antibiotics.

Recent Papers

  • Lee, J.M.; Zhang, X.; Norrby, P.O.; Helquist, P.; Wiest, O. "Stereoselectivity in (Acyloxy)borane-Catalyzed Mukaiyama Aldol Reactions." J. Org. Chem. 2016, 81, 5314-5321.
  • Wiest, O.; Maxfield, F.R.; Helquist, P. "Histone Deacetylase Inhibitors as Therapeitic Agents for Niemann-Pick Type C Disease." U.S. Patent 9,333,222 May 10, 2016.
  • Byrd, K.M.; Arieno, M.D.; Kennelly, M.; Estiu, G.; Wiest, O.; Helquist, P. "Design and Synthesis of a Crosslinker for Studying Intracellular Steroid Trafficking Pathways." Bioorg. Med. Chem. 2015, 23, 3843-3851.
  • Grigalunas, M.; Ankner, T.; Norrby, P.O.; Wiest, O.; Helquist, P. "Ni-Catalyzed Alkenylation of Ketone Enolates under Mild Conditions: Catalyst Identification and Optimization." J. Am. Chem. Soc. 2015, 137, 7019-7022.
  • Grigalunas, M.; Norrby, P.O.; Wiest, O.; Helquist, P. "Sequential Single-Flask Multicomponent Pd-Catalyzed α,γ-Coupling of Ketone Enolates: Facile Preparation of Complex Carbon Scaffolds." Angew. Chem. Int. Ed. 2015, 54, 11822-11825.
  • Grigalunas, M.; Ankner, T.; Norrby, P.O.; Wiest, O.; Helquist, P. "Palladium-Catalyzed Alkenylation of Ketone Enolates under Mild Conditions." Org. Lett. 2014, 16 (15), 3970-3973.

Contact Information

Primary Research Areas

Research Specialties