Studies are proposed to execute the total synthesis of several cyclopentanoid natural products including the antibiotic crinipellin A; the cardiotoxin subergorgic acid; laurenene, the only known naturally occurring fenestrane; retigeranic acid, a novel sesterterpene; and gingkolide A, an unusual molecule which contains three lactones and a t-butyl group. These syntheses will be carried out utilizing intramolecular photocycloadditions of 1,6 dienes to control specific stereochemical elements. An example of asymmetric induction in the intramolecular photocycloaddition will be investigated. An elevated temperature photocycloaddition to introduce highly sterically congested systems will be studied. A novel atom transfer fragmentation to cleave cyclobutyl methyl halides will also be investigated.

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Research Project (R01)
Project #
9R01GM038904-04
Application #
3295669
Study Section
Medicinal Chemistry Study Section (MCHA)
Project Start
1983-07-01
Project End
1990-07-31
Budget Start
1987-08-01
Budget End
1988-07-31
Support Year
4
Fiscal Year
1987
Total Cost
Indirect Cost
Name
University of North Carolina Chapel Hill
Department
Type
Schools of Arts and Sciences
DUNS #
078861598
City
Chapel Hill
State
NC
Country
United States
Zip Code
27599
Crimmins, Michael T; DeBaillie, Amy C (2006) Enantioselective total synthesis of bistramide A. J Am Chem Soc 128:4936-7
Crimmins, Michael T; Vanier, Grace S (2006) Enantioselective total synthesis of (+)-SCH 351448. Org Lett 8:2887-90
Crimmins, Michael T; Slade, David J (2006) Formal synthesis of 6-deoxyerythronolide B. Org Lett 8:2191-4
Crimmins, M T; Hauser, E B (2000) Synthesis of crossed [2 + 2] photocycloadducts: a novel approach to the synthesis of bridged bicyclic alkenes. Org Lett 2:281-4
Crimmins, M T; Emmitte, K A; Katz, J D (2000) Diastereoselective alkylations of oxazolidinone glycolates: a useful extension of the Evans asymmetric alkylation. Org Lett 2:2165-7