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EPSRC Reference: GR/R69488/01
Title: The Total Synthesis of Thapsigargin
Principal Investigator: Ley, Professor S
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Department: Chemistry
Organisation: University of Cambridge
Scheme: Standard Research (Pre-FEC)
Starts: 01 March 2002 Ends: 28 February 2005 Value (£): 189,103
EPSRC Research Topic Classifications:
Asymmetric Chemistry Biological & Medicinal Chem.
EPSRC Industrial Sector Classifications:
Pharmaceuticals and Biotechnology No relevance to Underpinning Sectors
Related Grants:
Panel History:  
Summary on Grant Application Form
The medicinal properties of the Mediterranean plant Thapsia garganica L. were first recognised in the second century BC. In 1976 sixteen guaianolides collectively termed `thapsigargins', were isolated. Thapsigargin is a potent histamine liberator and a selective and irreversible inhibitor of the sarcoplasmic and endoplasmic reticulum Ca2+ ATP dependant pumps (SERCAs) at nanomolar concentrations. It demonstrates a remarkable specificity for the SERCA isozymes, and any entity selectively effecting a specific step in Ca 2+ homeostatis is a potential tool for investigating and manipulating the physiology of the cell. The selectivity of thapsigargin in this inhibitory capacity has led to it becoming a powerful tool to manipulate intracellular Cat+.To date, no total synthesis has been published, although some minor modifications have been made possible through degradation studies. A flexible synthetic route to the thapsigargins would allow the synthesis of a range of guaianolides, their analogues and specifically labelled derivatives (useful for metabolic studies) in which the label is incorporated into the skeleton of the molecule. These materials would be invaluable tools in the study of Ca 2+ dependant cellular processes.
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Organisation Website: http://www.cam.ac.uk