Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 143, Issue 6, Pages 2464-2469Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.0c12948
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- Max-Planck-Gesellschaft
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Limaol, a marine-derived C40-polyketide, is unique in structure due to the nonthermodynamic array of four skipped methylene substituents on its hydrophobic tail. This distinctive segment was assembled using a two-directional approach and coupled to the polyether domain through an allyl/alkenyl Stille reaction under neutral conditions. The core region was prepared through several key steps, including asymmetric propargylation catalyzed by 3,3'-dibromo-BINOL, gold-catalyzed spirocyclization, and substrate-controlled allylation to introduce the southern sector.
A nonthermodynamic array of four skipped methylene substituents on the hydrophobic tail renders limaol, a C40-polyketide of marine origin, unique in structural terms. This conspicuous segment was assembled by a two-directional approach and finally coupled to the polyether domain by an allyl/alkenyl Stille reaction under neutral conditions. The core region itself was prepared via a 3,3'-dibromo-BINOL-catalyzed asymmetric propargylation, a gold-catalyzed spirocyclization, and introduction of the southern sector via substrate-controlled allylation as the key steps.
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