Synthesis 2020; 52(20): 3018-3028
DOI: 10.1055/s-0040-1707895
paper
© Georg Thieme Verlag Stuttgart · New York

Decarboxylative-Mediated Regioselective 1,3-Dipolar Cycloaddition for Diversity-Oriented Synthesis of Structurally exo′-Selective Spiro[oxindole-pyrrolidine-dihydrocoumarin] Hybrids

Authors

  • Xiong-Wei Liu

    a   College of Pharmaceutical Sciences, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, P. R. of China
  • Shun-Qin Chang

    b   Guizhou Medicine Edible Plant Resources Research and Development Center, Guizhou University, Guiyang, 550025, P. R. of China
  • Qi-Lin Wang

    c   Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P. R. of China   Email: zhouy@gzu.edu.cn
  • Shuang Chen

    b   Guizhou Medicine Edible Plant Resources Research and Development Center, Guizhou University, Guiyang, 550025, P. R. of China
  • Jun-Xin Wang

    b   Guizhou Medicine Edible Plant Resources Research and Development Center, Guizhou University, Guiyang, 550025, P. R. of China
  • Wei Zhou

    b   Guizhou Medicine Edible Plant Resources Research and Development Center, Guizhou University, Guiyang, 550025, P. R. of China
  • Ying Zhou

    a   College of Pharmaceutical Sciences, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, P. R. of China

We are grateful for the financial support from the NSFC (81660576), Project of Guizhou Province ([2020]1Y396, [2019]1402, and [2015]4032) and Doctoral Project of Guizhou University of Traditional Chinese Medicine ([2019]05).
Further Information

Publication History

Received: 15 February 2020

Accepted after revision: 02 June 2020

Publication Date:
09 July 2020 (online)


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Abstract

A general and practical three-component regioselective 1,3-dipolar cycloaddition of 3-amino-oxindole-based azomethine ylides and coumarins has been developed. This reaction displayed good substrate tolerance and gave a diverse array of biologically relevant spiro[ox-­i­ndole-pyrrolidine-dihydrocoumarin] derivatives bearing four contiguous stereocenters including one spiro quaternary center in moderate to high yields (up to 90%) with high diastereoselectivities (up to 15:1 dr). It is based on the application of carboxylic acid activated coumarins as dienophiles followed by a decarboxylation process. The possible mechanism of the 1,3-dipolar cycloaddition is proposed via an exo′-transition state. Furthermore, this is the first example of decarboxylative-mediated regioselective 1,3-dipolar cycloaddition of 3-amino-oxindole-based azomethine ylides and coumarins.

Supporting Information