Applications of the electron transfer photochemistry of iminium salt systems to natural product synthesis are being explored. Synthetic routes for preparation of selected members of the harringtonine alkaloid family, which employ photocyclization processes of N-trimethylsilyl substituted allyl iminium salts to construct the key spirocyclic unit, will be developed. Novel, electron transfer induced, photo-carbocyclization processes will be probed as part of efforts focused on the development of efficient sequences for erythrina alkaloid synthesis. Photocyclization reactions of dihydroisoquinolinium salt-benzyltrimethylsilane systems will be employed in general synthetic routes for construction of selected members of the protoberberine, spirobenzyl, aporphine and proaporphine class of isoquinoline alkaloids. Finally, electron transfer pathways for carbocyclic ring annulation will be probed.

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Research Project (R01)
Project #
5R01GM027251-09
Application #
3274659
Study Section
Medicinal Chemistry Study Section (MCHA)
Project Start
1980-01-01
Project End
1990-01-31
Budget Start
1988-02-01
Budget End
1989-01-31
Support Year
9
Fiscal Year
1988
Total Cost
Indirect Cost
Name
University of Maryland College Park
Department
Type
Earth Sciences/Resources
DUNS #
City
College Park
State
MD
Country
United States
Zip Code
20742
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