Williams BD, Smith AB. Total synthesis of (+)-18-epi-latrunculol A: development of a synthetic route.
J Org Chem 2014;
79:9284-96. [PMID:
25243951 PMCID:
PMC4184459 DOI:
10.1021/jo501733m]
[Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
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The
evolution of an enantioselective total synthesis of (+)-18-epi-latrunculol A, a congener of the marine-sponge-derived
latrunculins A and B, is reported. Key steps include a late-stage
Mitsunobu macrolactonization to construct the 16-membered macrolactone,
a mild Carreira alkynylation to unite the northern and southern hemispheres,
a diastereoselective, acid-mediated δ-hydroxy enone cyclization/equilibration
sequence, and a functional-group-tolerant cross-metathesis to access
the enone cyclization precursor.
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