Journal
CHEMICAL COMMUNICATIONS
Volume 54, Issue 91, Pages 12860-12862Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cc07479h
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Funding
- China Scholarship Council
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An expedient route to the pentacyclic core of the tryptoquivaline alkaloids and the total synthesis of natural product (+)-3-(4-oxoquinazolin-3-yl)spiro[1H-indole-3,5-oxolane]-2,2-dione (1) have been achieved. The route is enabled by a key, highly stereoselective, aldol reaction catalysed by a Ag(i) and cinchona-derived aminophosphine ligand system, forming a highly substituted oxazoline ring, and setting the C1 spirocyclic stereocentre for downstream manipulation.
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