Journal
ORGANIC & BIOMOLECULAR CHEMISTRY
Volume 13, Issue 10, Pages 3024-3031Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ob02144d
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Funding
- MINECO-Spain [SAF2013-48397-R-FEDER]
- Xunta de Galicia from DXI + D + i [08CSA052383PR]
- DXPCTSUG [Consolidacion 2006/15]
- INBIOMED-FEDER Unha maneira de facer Europa
- Parga Pondal Contract
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A new stereoselective synthesis of the C-40-bis-acetylenic carotenoids all-trans-(3R,3'R)-alloxanthin and all-trans-3,4,7,8,3', 4', 7', 8'-octadehydro-beta, beta-carotene, both compounds featuring a stereochemically labile C7-C10 enyne, based on a bi-directional Horner-Wadsworth-Emmons (HWE) reaction of a C-15-phosphonate and a central C-10-dialdehyde, is reported. The triene unit of the latter fragment was synthesized using the acyclic metathesis/dimerization reaction.
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