Cupioli E, Gaigne FJM, Sachse A, Buday P, Weigand W, Liebing P, Arndt HD. Templated Total Synthesis of Cu(I)-Methanobactin OB3b.
Angew Chem Int Ed Engl 2023;
62:e202304901. [PMID:
37403384 DOI:
10.1002/anie.202304901]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/01/2023] [Accepted: 07/04/2023] [Indexed: 07/06/2023]
Abstract
Methanobactin OB3b (Mbn-OB3b) is a unique natural product with stunning affinity for copper ions (Ka ≈Cu(I) 1034 ). Here, we report the first total synthesis of Cu(I)-bound methanobactin OB3b featuring as key transformations a cyclodehydration-thioacylation sequence, to generate the conjugated heterocyclic systems, and a copper-templated cyclization, to complete the caged structure of the very sensitive target compound.
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