Studies toward brevisulcenal F via convergent strategies for marine ladder polyether synthesis

TETRAHEDRON

卷:74

Article

Katcher, Matthew H.¹  Jamison, Timothy F.¹ 

[1] MIT, Dept Chem, 77 Massachusetts Ave, Cambridge, MA 02139 USA

关键词: Natural products;    Cascade reactions;    Epoxide openings;    Polyethers;    Oxygen heterocycles;   

DOI  :  10.1016/j.tet.2018.01.039

来源: Elsevier

【 摘 要 】

Shortly after the initial isolation of marine ladder polyether natural products, biomimetic epoxide opening cascade reactions were proposed as an efficient strategy for the synthesis of these compounds. However, difficulties in assembling the cascade precursors have limited the realization of these cascades. In this report, we describe strategies that provide convergent access to cascade precursors via regioselective allylation and efficient fragment coupling. We then investigate epoxide-opening cascades promoted by strong bases for the formation of fused tetrahydropyrans. These strategies are evaluated in the context of the synthesis of rings CDEFG of brevisulcenal F. (C) 2018 Elsevier Ltd. All rights reserved.

【 授权许可】

Free