The first goal of this proposal is the design and synthesis of novel antimalarial drugs. It has recently been reported that manzamine A is a highly potent antimalarial agent, making the synthesis and biological evaluation of manzamine-related structures an important goal in medicine. The synthesis of simple manzamine analogs and the biological evaluation of these structures in collaboration with Dr. David Skanchey at the Walter Reed Army Institute of Research (WRAIR) is described. The methodology that was developed in the Winkler laboratory for the first total synthesis of manzamine A will be used in the construction of these novel antimalarial drug candidates. The second goal of this proposal is the completion of the first total synthesis of ingenol, a naturally occurring diterpene that is a potent activator of the ubiquitous cell signaling system protein kinase C (PKC). Given the biological responses induced by activators of PKC, the development of inhibitors of this enzyme may lead to therapeutic agents useful in the treatment of chronic inflammatory and proliferative diseases. To date, ingenol has not yet yielded to total synthesis, despite the efforts of laboratories around the world. The intramolecular dioxenone reaction developed in the Winkler laboratory provides a unique approach to the control of the critical inside-outside stereochemical relationship in the construction of ingenol. The combination of literature precedent from the Winkler laboratory with the unpublished results described in the Progress Report should lead to the completion of the first total synthesis of ingenol during the proposed project period.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Research Project (R01)
Project #
5R01CA040250-13
Application #
6632853
Study Section
Medicinal Chemistry Study Section (MCHA)
Program Officer
Lees, Robert G
Project Start
1992-08-01
Project End
2004-04-30
Budget Start
2003-07-01
Budget End
2004-04-30
Support Year
13
Fiscal Year
2003
Total Cost
$260,682
Indirect Cost
Name
University of Pennsylvania
Department
Chemistry
Type
Schools of Arts and Sciences
DUNS #
042250712
City
Philadelphia
State
PA
Country
United States
Zip Code
19104
Haimowitz, Thomas; Fitzgerald, Mark E; Winkler, Jeffrey D (2011) STUDIES DIRECTED TOWARD THE SYNTHESIS OF NAKADOMARIN A. Tetrahedron Lett 52:2162-2164
Winkler, Jeffrey D; Lee, Esther C Y; Nevels, LaToya I (2005) A Pauson-Khand approach to the synthesis of ingenol. Org Lett 7:1489-91
Winkler, Jeffrey D; Oh, Kyungsoo; Asselin, Sylvie M (2005) Synthesis of highly functionalized furanones via aldol reaction of 3-silyloxyfurans. Org Lett 7:387-9
Winkler, Jeffrey D; McLaughlin, Emily C (2005) Intramolecular photocycloaddition of dioxenones with alkynes: formation of secondary photoproducts from cyclobutene photoadducts. Org Lett 7:227-9
Winkler, Jeffrey D; Asselin, Sylvie M; Shepard, Stacey et al. (2004) Metathesis approach to the synthesis of polyheterocyclic structures from oxanorbornenes. Org Lett 6:3821-4
Doerksen, Robert J; Chen, Bin; Yuan, Jing et al. (2003) Novel conformationally-constrained beta-peptides characterized by 1H NMR chemical shifts. Chem Commun (Camb) :2534-5
Winkler, Jeffrey D; Rouse, Meagan B; Greaney, Michael F et al. (2002) The first total synthesis of (+/-)-ingenol. J Am Chem Soc 124:9726-8
Kwak, Y S; Winkler, J D (2001) Synthesis of 6-aza-bicyclo[3,2,1]octan-3-ones via vinylogous imide photochemistry: an approach to the synthesis of the hetisine alkaloids. J Am Chem Soc 123:7429-30
Davis, K D; Berrodin, T J; Stelmach, J E et al. (1994) Endogenous retinoid X receptors can function as hormone receptors in pituitary cells. Mol Cell Biol 14:7105-10