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Szalai Z, Debrei M, Ábrányi-Balogh P, Bősze S, Oláhné
Szabó R, Karaghiosoff K, Drahos L, Keglevich G. Synthesis of Mesylated and Tosylated α-Hydroxy-Benzylphosphonates; Their Reactivity and Cytostatic Activity. ACS OMEGA 2024; 9:31043-31055. [PMID: 39035900 PMCID: PMC11256086 DOI: 10.1021/acsomega.4c04382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 06/18/2024] [Accepted: 06/20/2024] [Indexed: 07/23/2024]
Abstract
α-Hydroxyphosphonates and their acylated and phosphorylated derivatives may be of significant biological activity including cytotoxic effects. To extend the pool of the potentially bioactive species, new methane- and arenesulfonyloxyphosphonates were synthesized by the sulfonylation of differently substituted α-hydroxy-benzylphosphonates using methanesulfonyl chloride or p-toluenesulfonyl chloride at 25 °C in the presence of triethylamine in toluene. The new sulfonyl derivatives were obtained in 54-80% yields. In the case of the 4- or 2-methoxy substituent in the aromatic ring, surprisingly the corresponding α-chlorophosphonates were the exclusive products, whose formation was explained assuming a quinoid intermediate and supported by theoretical calculations. With a 3-methoxyphenyl substituent, the expected mesylation of the hydroxy group took place. Attempted alcoholyses of the diethyl α-methanesulfonyloxy-benzylphosphonates with different substituents in the benzyl ring at ∼140 °C in the presence of triethylamine under microwave irradiation left the P-function intact under the conditions applied, instead, the mesyloxy group was substituted by an alkoxy unit in a selective new reaction. The α-alkoxy-benzylphosphonates were isolated in 60-77% yields. While α-chloro- or α-bromo-benzylphosphonates proved to be rather inefficient in the Michaelis-Arbuzov reaction with triethyl phosphite, according to a new possibility, the α-methansulfonyloxy-benzylphosphonates underwent an efficient Arbuzov fission using the phosphite in excess at 135 °C. The arylmethylenebisphosphonates were obtained in yields of 76-81%. Bioactivity studies with the members of the phosphonate library revealed pronounced in vitro cytostatic effect of the α-hydroxy- and α-mesyloxy-3,5-di-tert-butylbenzylphosphonates on human breast carcinoma cell culture with IC50 values of 16.4 and 28.0 μM, respectively. The mesyloxy species was also cytostatic on melanoma cells (IC50 = 34.9).
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Affiliation(s)
- Zsuzsanna Szalai
- Department
of Organic Chemistry and Technology, Faculty of Chemical Technology
and Biotechnology, Budapest University of
Technology and Economics, Műegyetem rkp. 3, 1111 Budapest, Hungary
| | - Márton Debrei
- Department
of Organic Chemistry and Technology, Faculty of Chemical Technology
and Biotechnology, Budapest University of
Technology and Economics, Műegyetem rkp. 3, 1111 Budapest, Hungary
| | - Péter Ábrányi-Balogh
- Department
of Organic Chemistry and Technology, Faculty of Chemical Technology
and Biotechnology, Budapest University of
Technology and Economics, Műegyetem rkp. 3, 1111 Budapest, Hungary
- Medicinal
Chemistry Research Group, HUN-REN Research
Centre for Natural Sciences, 1117 Budapest, Hungary
- National
Drug Research and Development Laboratory, HUN-REN Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - Szilvia Bősze
- Hungarian
Research Network (HUN-REN), HUN-REN-ELTE Research Group of Peptide
Chemistry, Eötvös Loránd
University, 1117 Budapest, Hungary
| | - Rita Oláhné
Szabó
- Hungarian
Research Network (HUN-REN), HUN-REN-ELTE Research Group of Peptide
Chemistry, Eötvös Loránd
University, 1117 Budapest, Hungary
- Department
of Genetics, Cell- and Immunobiology, Semmelweis
University, Nagyvárad
tér 4, 1089 Budapest, Hungary
| | - Konstantin Karaghiosoff
- Department
Chemie, Ludwig-Maximilians-Universität
München, Butenandtstr. 5-13, D-81377 München, Germany
| | - László Drahos
- MS
Proteomics Research Group, Research Centre
for Natural Sciences, 1117 Budapest, Hungary
| | - György Keglevich
- Department
of Organic Chemistry and Technology, Faculty of Chemical Technology
and Biotechnology, Budapest University of
Technology and Economics, Műegyetem rkp. 3, 1111 Budapest, Hungary
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Varga PR, Belovics A, Bagi P, Tóth S, Szakács G, Bősze S, Szabó R, Drahos L, Keglevich G. Efficient Synthesis of Acylated, Dialkyl α-Hydroxy-Benzylphosphonates and Their Anticancer Activity. Molecules 2022; 27:molecules27072067. [PMID: 35408466 PMCID: PMC9000670 DOI: 10.3390/molecules27072067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 03/17/2022] [Accepted: 03/21/2022] [Indexed: 11/25/2022] Open
Abstract
An efficient method applying acyl chlorides as reagents was developed for the acylation of the hindered hydroxy group of dialkyl α-hydroxy-benzylphosphonates. The procedure did not require any catalyst. A few acylations were also performed with the SC-enantiomer of dimethyl α-hydroxy-benzylphosphonate, and the optical purity was retained. A part of the acyloxyphosphonates was tested against eight tumor cell lines of different tissue origin at c = 50 μM concentration. The compounds elicited moderate cytostatic effect against breast, skin, prostate, colon, and lung carcinomas; a melanoma cell line; and against Kaposi’s sarcoma cell lines. Then, dose-dependent cytotoxicity was assayed, and benzoylation of the α-hydroxy group was identified as a moiety that increases anticancer cytotoxicity across all cell lines. Surprisingly, a few analogues were more toxic to multidrug resistant cancer cell lines, thus evading P-glycoprotein mediated drug extrusion.
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Affiliation(s)
- Petra R. Varga
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary; (P.R.V.); (A.B.); (P.B.)
| | - Alexandra Belovics
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary; (P.R.V.); (A.B.); (P.B.)
| | - Péter Bagi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary; (P.R.V.); (A.B.); (P.B.)
| | - Szilárd Tóth
- Research Centre for Natural Sciences, Institute of Enzymology, 1117 Budapest, Hungary; (S.T.); (G.S.)
| | - Gergely Szakács
- Research Centre for Natural Sciences, Institute of Enzymology, 1117 Budapest, Hungary; (S.T.); (G.S.)
- Institute of Cancer Research, Medical University of Vienna, Borschkegasse 8a, A-1090 Vienna, Austria
| | - Szilvia Bősze
- Eötvös Loránd Research Network (ELKH), Research Group of Peptide Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (S.B.); (R.S.)
| | - Rita Szabó
- Eötvös Loránd Research Network (ELKH), Research Group of Peptide Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (S.B.); (R.S.)
| | - László Drahos
- Research Centre for Natural Sciences, MS Proteomics Research Group, 1117 Budapest, Hungary;
| | - György Keglevich
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary; (P.R.V.); (A.B.); (P.B.)
- Correspondence: ; Tel.: +36-1-463-1111 (ext. 5883)
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Rádai Z, Keglevich G. Synthesis and Reactions of α-Hydroxyphosphonates. Molecules 2018; 23:E1493. [PMID: 29925805 PMCID: PMC6099812 DOI: 10.3390/molecules23061493] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 06/11/2018] [Accepted: 06/16/2018] [Indexed: 12/18/2022] Open
Abstract
This review summarizes the main synthetic routes towards α-hydroxyphosphonates that are known as enzyme inhibitors, herbicides and antioxidants, moreover, a number of representatives express antibacterial or antifungal effect. Special attention is devoted to green chemical aspects. α-Hydroxyphosphonates are also versatile intermediates for other valuable derivatives. O-Alkylation and O-acylation are typical reactions to afford α-alkoxy-, or α-acyloxyphosphonates, respectively. The oxidation of hydroxyphosphonates leads to ketophosphonates. The hydroxy function at the α carbon atom of hydroxyphosphonates may be replaced by a halogen atom. α-Aminophosphonates formed in the nucleophilic substitution reaction of α-hydroxyphosphonates with primary or secondary amines are also potentially bioactive compounds. Another typical reaction is the base-catalyzed rearrangement of α-hydroxy-phosphonates to phosphates. Hydrolysis of the ester function of hydroxyphosphonates leads to the corresponding phosphonic acids.
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Affiliation(s)
- Zita Rádai
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary.
| | - György Keglevich
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary.
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Deo C, Bogliotti N, Retailleau P, Xie J. Triphenylphosphine Photorelease and Induction of Catalytic Activity from Ruthenium-Arene Complexes Bearing a Photoswitchable o-Tosylamide Azobenzene Ligand. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00431] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Claire Deo
- PPSM, ENS Cachan,
CNRS, Université Paris-Saclay, 94235 Cachan, France
| | - Nicolas Bogliotti
- PPSM, ENS Cachan,
CNRS, Université Paris-Saclay, 94235 Cachan, France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles,
CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Juan Xie
- PPSM, ENS Cachan,
CNRS, Université Paris-Saclay, 94235 Cachan, France
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Khalili D, Iranpoor N, Firouzabadi H. 4,4′-Azopyridine as an easily prepared and recyclable oxidant for synthesis of symmetrical disulfides from thiols or alkyl halides(tosylates)/thiourea. J Sulphur Chem 2015. [DOI: 10.1080/17415993.2015.1070266] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Iranpoor N, Firouzabadi H, Khalili D. Heteroaromatic azo compounds as efficient and recyclable reagents for direct conversion of aliphatic alcohols into symmetrical disulfides. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.10.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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