Synthesis 2024; 56(13): 2059-2065
DOI: 10.1055/s-0043-1774861
paper

Syntheses of 7a-Substituted Pyrrolizidine Derivatives via Stereocontrolled Anionic Cyclization

Autoren

  • Hongjun Ming

    a   School of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui Province, 230601, P. R. of China
  • Darong He

    b   Nature Pharmaceutical (Anhui) Co., Ltd, 4th Floor, 6# Building, 8# Huangguan Road, Anqing Hi-Tech Development District, Anqing, Anhui Province, P. R. of China
  • Shengmeng Si

    b   Nature Pharmaceutical (Anhui) Co., Ltd, 4th Floor, 6# Building, 8# Huangguan Road, Anqing Hi-Tech Development District, Anqing, Anhui Province, P. R. of China
  • Chao Xu

    a   School of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui Province, 230601, P. R. of China
  • Yunge Yuan

    a   School of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui Province, 230601, P. R. of China
  • Xiaoran Tian

    b   Nature Pharmaceutical (Anhui) Co., Ltd, 4th Floor, 6# Building, 8# Huangguan Road, Anqing Hi-Tech Development District, Anqing, Anhui Province, P. R. of China
  • Zhigang Hu

    b   Nature Pharmaceutical (Anhui) Co., Ltd, 4th Floor, 6# Building, 8# Huangguan Road, Anqing Hi-Tech Development District, Anqing, Anhui Province, P. R. of China
  • Shikuo Li

    a   School of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui Province, 230601, P. R. of China
  • Hui Zhang

    a   School of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui Province, 230601, P. R. of China
  • Fangzhi Huang

    a   School of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui Province, 230601, P. R. of China
  • Yue-Lei Chen

    b   Nature Pharmaceutical (Anhui) Co., Ltd, 4th Floor, 6# Building, 8# Huangguan Road, Anqing Hi-Tech Development District, Anqing, Anhui Province, P. R. of China

This work is supported by the National Natural Science Foundation of China (Grant Nos. 52172174, 51872002, and 21771001), the Key Research­ and Development Projects in Anhui Province (202004a07020026), and the Program of Anhui Scientific and Technical Leaders Reserve Candidates (2018RH168).


Graphical Abstract

Dedicated to Prof. Dr. Jun-Da Cen on the occasion of his 60th birthday.

Abstract

Starting from inexpensive proline and epichlorohydrin, a pivotal stereocontrolled anionic cyclization reaction paves the way for a robust and adaptable methodology to produce stereoisomers of 7a-substituted pyrrolizidine derivatives. This process yields intriguing 7a-hydroxymethyl pyrrolizidine derivatives, among them valuable trans-(2-fluorohexahydro-1H-pyrrolizin-7a-yl)methanol, which is attainable through multiple steps.

Supporting Information



Publikationsverlauf

Eingereicht: 02. Februar 2024

Angenommen nach Revision: 15. April 2024

Artikel online veröffentlicht:
06. Mai 2024

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