This project has been part of an ongoing interest in metabolites with a cyclic tricarbonyl motif 1, usually enolised. Coleophomones A C have a unique architecture with the cyclic tricarbonyl motif embedded in an 11-membered ring: A & B exist in aldol equilibrium, B & C are geometric isomers, and D lacks the macrocycle.1,2 Antifungal & antibiotic activity, and inhibition of human heart chymase & bacterial cell-wall transglycosylase, has generated synthetic interest. In an approach distinct from reported studies,3 we propose 4-carbonyl-substituted isoxazoles, from dipolar cycloaddition of nitrile oxides, as building blocks for the tricarbonyl framework. During this investigation precursors to the macrocycles of coleophomones A, B, C and analogues were developed. En route to these precursors we have uncovered and probed a facile and highly unusual benzisoxazole to oxazole rearrangement. *Schemes and figures relating to the abstract can be found within the document proper.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:631634 |
| Date | January 2014 |
| Creators | Chatterley, Alexander |
| Publisher | Loughborough University |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Source | https://dspace.lboro.ac.uk/2134/16261 |
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