Oka K, Fuchi S, Komine K, Fukuda H, Hatakeyama S, Ishihara J. Catalytic Asymmetric Total Synthesis of Exiguolide.
Chemistry 2020;
26:12862-12867. [PMID:
32428309 DOI:
10.1002/chem.202001773]
[Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 05/09/2020] [Indexed: 11/12/2022]
Abstract
The catalytic asymmetric total synthesis of (-)-exiguolide, a complex 20-membered macrolide embedded with a bis(tetrahydropyran) motif, is reported. The convergent synthesis involves the construction of the C1-C11 tetrahydropyran segment via catalytic asymmetric allylation and Prins cyclization, and the formation of the C12-C21 phosphonate segment via catalytic asymmetric cyclocondensation reaction and Johnson-Claisen rearrangement. The synthesis of 15-epi-exiguolide is also described.
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