Synthesis 2023; 55(12): 1940-1948
DOI: 10.1055/a-2012-5187
paper
Special Issue Honoring Prof. Guoqiang Lin's Contributions to Organic Chemistry

Aza-Wacker Cyclization Toward the Bridged Core of FR901483

Defeng Shen
a   CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. of China
,
Changmin Xie
a   CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. of China
,
Zhuwei Ruan
a   CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. of China
,
Chen Yang
a   CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. of China
,
Sha-Hua Huang
b   School of Environmental and Chemical Engineering, Shanghai Institute of Technology, Shanghai 201418, P. R. of China
,
Lili Zhu
a   CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. of China
,
Ran Hong
a   CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. of China
› Author Affiliations
Financial support from the National Natural Science Foundation of China (22171281 and 22271194) and the Science and Technology Commission of Shanghai Municipality (20XD1404700) is greatly appreciated.


Abstract

A nine-step synthetic route to access the tricyclic core of FR901483 is reported, featuring a key aza-Wacker cyclization step to construct an α-tertiary amine (ATA) in the bridged structure. The aza-Wacker protocol can tolerate both exocyclic and endocyclic double bonds, providing viable access to various bridged bicyclic rings bearing an ATA (e.g., 6-azabicyclo[3.2.1]octane, 7-azabicyclo[3.3.1]nonane, and 7-azabicyclo[4.2.1]nonane) in good to excellent yields. The synthetic studies presented herein enable structural derivatization of FR901483 to further exploit its compelling biological activities.

Supporting Information



Publication History

Received: 24 December 2022

Accepted after revision: 13 January 2023

Accepted Manuscript online:
13 January 2023

Article published online:
06 February 2023

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