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

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
› Author Affiliations
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.


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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