General Access to Concave-Substituted cis- Dioxabicyclo[3.3.0]octanones: Enantioselective Total Syntheses of Macfarlandin C and Dendrillolide A

被引:4
|
作者
Allred, Tyler K. [1 ]
Dieskau, Andre P. [1 ]
Zhao, Peng [1 ]
Lackner, Gregory L. [1 ]
Overman, Larry E. [1 ]
机构
[1] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA
来源
JOURNAL OF ORGANIC CHEMISTRY | 2020年 / 85卷 / 23期
基金
美国国家科学基金会;
关键词
ALPHA; BETA-UNSATURATED KETONES; ASYMMETRIC-SYNTHESIS; DIVERGENT SYNTHESIS; CARBONYL-COMPOUNDS; CONCISE SYNTHESIS; MOLECULAR-OXYGEN; ALPHA-HYDROXY; ENE REACTIONS; HYDROGENATION; ALCOHOLS;
D O I
10.1021/acs.joc.0c02273
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The evolution of a strategy to access the family of rearranged spongian diterpenoids harboring a concave-substituted cis-2,8-dioxabicyclo[3.3.0]octan-3-one fragment is described. The approach involves late-stage fragment coupling of a tertiary-carbon radical and an electron-deficient double bond to form vicinal quaternary and tertiary stereocenters with high fidelity. A stereoselective Mukaiyama hydration is the key step in the subsequent elaboration of the cis-2,8-dioxabicyclo[3.3.0]octan-3-one moiety. This strategy was utilized in enantioselective total syntheses of (-)-macfarlandin C and (+)-dendrillolide A. An efficient construction of enantiopure tetramethyloctahydronaphthalenes was developed during the construction of (-)-macfarlandin C.
引用
收藏
页码:15532 / 15551
页数:20
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