? This research program focuses on the development of new synthetic strategies for the synthesis of complex biologically active alkaloid natural products. The objective is not only to simply achieve the total syntheses of biologically relevant natural product targets, but also to explore and develop new synthetic approaches and reactions to address specific challenges in synthetic organic chemistry. The antiabortifacient asparagamine A, the anti-leukemic Cephalotaxus esters deoxyharringtonine and drupangtonine, and the potent vaso-dilator kobusine are the targets for chemical synthesis. All of these natural products exhibit potent yet distinct biological activities; however, they are all structurally characterized by a pyrrolidine ring embedded within a complex polycyclic architecture. This research program will investigate new methods and strategies for functionalized nitrogen-heterocycle synthesis, including azomethine ylide generation and cycloaddition via the O-sulfonylation or O-acylation of vinylogous amides for the preparation of complex pyrrolidines, as well as strain-accelerated [3,3]-sigmatropic rearrangement for the synthesis of complex benzazepines. Successful synthesis of these target molecules will not only lay the foundation for efficient and practical strategies for complex alkaloid synthesis, but will also provide access to rare natural products of biological interest and therapeutic potential in a variety of health areas, including: (1) the prevention of health risks associated with pre-term labor; (2) the treatment of leukemia; and (3) the treatment of high blood pressure and congestive heart failure induced by vasoconstriction. ? ?

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Research Project (R01)
Project #
5R01GM067659-03
Application #
6878099
Study Section
Medicinal Chemistry Study Section (MCHA)
Program Officer
Schwab, John M
Project Start
2003-04-10
Project End
2007-03-31
Budget Start
2005-04-01
Budget End
2006-03-31
Support Year
3
Fiscal Year
2005
Total Cost
$259,905
Indirect Cost
Name
University of Illinois Urbana-Champaign
Department
Chemistry
Type
Schools of Arts and Sciences
DUNS #
041544081
City
Champaign
State
IL
Country
United States
Zip Code
61820
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Shi, Yuan; Wilmot, Jeremy T; Nordstrøm, Lars Ulrik et al. (2013) Total synthesis, relay synthesis, and structural confirmation of the C18-norditerpenoid alkaloid neofinaconitine. J Am Chem Soc 135:14313-20
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Bultman, Michael S; Ma, Jun; Gin, David Y (2008) Synthetic access to the chlorocyclopentane cores of the proposed original and revised structures of palau'amine. Angew Chem Int Ed Engl 47:6821-4
Peese, Kevin M; Gin, David Y (2008) Asymmetric synthetic access to the hetisine alkaloids: total synthesis of (+)-nominine. Chemistry 14:1654-65
Eckelbarger, Joseph D; Wilmot, Jeremy T; Epperson, Matthew T et al. (2008) Synthesis of antiproliferative Cephalotaxus esters and their evaluation against several human hematopoietic and solid tumor cell lines: uncovering differential susceptibilities to multidrug resistance. Chemistry 14:4293-306
Carra, Ryan J; Epperson, Matthew T; Gin, David Y (2008) Application of an intramolecular dipolar cycloaddition to an asymmetric synthesis of the fully oxygenated tricyclic core of the stemofoline alkaloids. Tetrahedron 64:3629-3641
Arnold, Michael A; Day, Kenneth A; Duron, Sergio G et al. (2006) Total synthesis of (+)-batzelladine A and (-)-batzelladine D via [4 + 2]-annulation of vinyl carbodiimides with N-alkyl imines. J Am Chem Soc 128:13255-60
Eckelbarger, Joseph D; Wilmot, Jeremy T; Gin, David Y (2006) Strain-release rearrangement of N-vinyl-2-arylaziridines. Total synthesis of the anti-leukemia alkaloid (-)-deoxyharringtonine. J Am Chem Soc 128:10370-1

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