Synthesis 2024; 56(04): 561-566
DOI: 10.1055/a-2122-4178
special topic
Synthetic Development of Key Intermediates and Active Pharmaceutical Ingredients (APIs)

Efficient Synthesis of Diethyl, Dialkyl α-Hydroxy-propylenebisphosphonates and Related 5-Phosphonoyl-1,2-oxaphospholane 2-Oxides

Authors

  • Petra Regina Varga

    a   Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
  • Alexandra Belovics

    a   Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
  • Konstantin Karaghiosoff

    b   Department Chemie, Ludwig-Maximilians-Universitat München, 81377 München, Butenandtstr. 5–13, Germany
  • Rita Szabó

    c   Eötvös Loránd Research Network (ELKH), Research Group of Peptide Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary
    d   Department of Genetics, Cell-and Immunobiology, Semmelweis University, 1089, Budapest, Nagyvárad tér 4, Hungary
  • Szilvia Bősze

    c   Eötvös Loránd Research Network (ELKH), Research Group of Peptide Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary
  • László Drahos

    e   MS Proteomics Research Group, Research Centre for Natural Sciences, 1117 Budapest, Hungary
  • György Keglevich

    a   Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1521 Budapest, Hungary

This project was supported by the National Research, Development and Innovation Office (K134318). Project no. RRF-2.3.1-21-2022-00015 has been implemented with the support provided by the European Union.


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Abstract

A series of new dialkyl α-diethylphosphonoylethyl-α-hydroxy-ethylphosphonates were prepared using the Pudovik reaction of the corresponding γ-oxophosphonate with dialkyl phosphites performed on the surface of Al2O3/KF. The adducts revealed unexpected reactivity in the attempted O-acylation reaction, and provided the corresponding 5-phosphonoyl-1,2-oxaphospholane 2-oxides. On treatment with Cs2CO3, instead of the expected rearrangement a cyclization reaction leading to the same ring products took place. Three of the phosphonoylethyl-α hydroxy-ethylphosphonates, along with two phosphonoylmethyl analogues revealed significant and selective anticancer effect on A431 cells, and occasionally, on PC-3 and MDA-MB 231 cells.

Supporting Information



Publication History

Received: 27 April 2023

Accepted after revision: 03 July 2023

Accepted Manuscript online:
04 July 2023

Article published online:
17 August 2023

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