Synthesis 2021; 53(07): 1262-1270
DOI: 10.1055/s-0040-1706608
paper

Straightforward Synthesis of Succinimide-Fused Pyrrolizidines by A Three-Component Reaction of α-Diketone, Amino Acid, and Maleimide

Peng Shen
a   Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, Zhejiang, P. R. of China
,
Yeting Guo
a   Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, Zhejiang, P. R. of China
,
Jian Wei
b   The State Key Laboratory of Chemical Oncogenomics, Shenzhen Graduate School of Peking University, Shenzhen 518055, P. R. of China
,
Hua Zhao
a   Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, Zhejiang, P. R. of China
,
Hongbin Zhai
b   The State Key Laboratory of Chemical Oncogenomics, Shenzhen Graduate School of Peking University, Shenzhen 518055, P. R. of China
,
Yufen Zhao
a   Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, Zhejiang, P. R. of China
› Author Affiliations
We thank the National Natural Science Foundation of China (no. 22001137), the Science and Technology Planning Project of Guangdong Province (no. 2017B030314002), and the Natural Science Foundation of Zhejiang Province (no. LQ20B020003) for financial support.


Abstract

An efficient, one-pot, three-component [3+2] cycloaddition reaction of azomethine ylide obtained from α-dicarbonyl compounds (cyclic and acyclic diketone or keto ester) and amino acids with maleimides under catalyst-free conditions has been developed. This cascade protocol shows high efficiency and remarkable functional group tolerance, and the ubiquitous succinimide-fused pyrrolizidines with a highly compact and strained scaffold were obtained with high yield and excellent diastereoselectivity. Furthermore, this novel and atom-economical strategy could be performed on a gram scale with comparable reaction efficiency.

Supporting Information



Publication History

Received: 22 October 2020

Accepted after revision: 24 October 2020

Article published online:
03 December 2020

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