Asymmetric Synthesis of the C1-C13 Fragment of the Marine Metabolite Bistramide K

[摘要]：A synthetic study on the construction of the C1-C13 fragment of bistramide K is described. This unit differs from other members of the bistramide family, which are equipped with a pyran structure at C6-C11. In bistramide K, the linear C1-C13 portion contains three stereogenic centers as well as two supplementary (E)-olefin positions. The key step in the synthesis was the elaboration of the (E)-olefin C6-C7 by using a Julia-Kocienski reaction between aldehyde 4 and benzo-thiazolesulfone 15.

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