Direct Imine Acylation: Synthesis of the Proposed Structures of ‘Upenamide
作者:William P. Unsworth、Katherine A. Gallagher、Mickaël Jean、Jan Peter Schmidt、Louis J. Diorazio、Richard J. K. Taylor
DOI:10.1021/ol3030764
日期:2013.1.18
The synthesis of the two proposed structures of macrocyclic marine natural product ‘upenamide is reported. The key step utilizes directimineacylation (DIA) with a protected β-hydroxy acid to construct the key tricyclic ABC ring system. The macrocyclization was completed in the final step using a Stille cross-coupling reaction.
Stereocontrolled Synthesis of the DE Ring System of the Marine Alkaloid Upenamide
作者:Kurt Kiewel、Zhushou Luo、Gary A. Sulikowski
DOI:10.1021/ol051993e
日期:2005.11.1
[reaction: see text] A stereocontrolled synthesis of the DE fragment (2) of the marine alkaloid upenamide (1) is described. The synthesis proceeds in 12 steps from caprolactone (10) and 20-25% overall yield.