Journal
ORGANIC & BIOMOLECULAR CHEMISTRY
Volume 11, Issue 44, Pages 7768-7777Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ob41541d
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- National Institutes of Health
- Purdue University
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The asymmetric total synthesis of the anti-proliferative macrolide (+)-neopeltolide has been completed. The stereochemically defined trisubstituted tetrahydropyran ring was constructed via a catalytic hetero-Diels-Alder reaction creating two new chiral centers in a highly diastereoselective manner. The other key features of this synthesis included Brown's asymmetric allylation to install the requisite C-11 and C-13 stereocenters. The synthesis of the oxazole side chain consisted of a hydrozirconation of an alkynyl stannane to establish the Z stereochemistry, followed by a palladium catalyzed cross coupling to introduce the desired Z olefin in the oxazole side chain.
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