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Kozlov VA, Aleksanyan DV, Churusova SG, Spiridonov AA, Rybalkina EY, Gutsul EI, Aksenova SA, Korlyukov AA, Peregudov AS, Klemenkova ZS. Unsymmetrical Pd(II) Pincer Complexes with Benzothiazole and Thiocarbamate Flanking Units: Expedient Solvent-Free Synthesis and Anticancer Potential. Int J Mol Sci 2023; 24:17331. [PMID: 38139160 PMCID: PMC10744248 DOI: 10.3390/ijms242417331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 12/02/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023] Open
Abstract
Driven by the growing threat of cancer, many research efforts are directed at developing new chemotherapeutic agents, where the central role is played by transition metal complexes. The proper ligand design serves as a key factor to unlock the anticancer potential of a particular metal center. Following a recent trend, we have prepared unsymmetrical pincer ligands that combine benzothiazole and thiocarbamate donor groups. These compounds are shown to readily undergo direct cyclopalladation, affording the target S,C,N-type Pd(II) pincer complexes both in solution and in the absence of a solvent. The solid-phase strategy provided the complexes in an efficient and ecologically friendly manner. The resulting palladacycles are fully characterized using nuclear magnetic resonance (NMR) and infrared (IR) spectroscopy and, in one case, by single-crystal X-ray diffraction (XRD). The solvent-free reactions are additionally analyzed by powder XRD. The pincer complexes exhibit remarkable cytotoxicity against several solid and blood cancer cell lines, including human colorectal carcinoma (HCT116), breast cancer (MCF7), prostate adenocarcinoma (PC3), chronic myelogenous leukemia (K562), multiple plasmacytoma (AMO1), and acute lymphoblastic leukemia (H9), with the dimethylamino-substituted derivative being particularly effective. The latter also induced an appreciable level of apoptosis in both parental and doxorubicin-resistant cells K562 and K562/iS9, vindicating the high anticancer potential of this type of palladacycles.
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Affiliation(s)
- Vladimir A. Kozlov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Str. 1, 119334 Moscow, Russia; (V.A.K.); (S.G.C.); (A.A.S.); (E.I.G.); (S.A.A.); (A.A.K.); (A.S.P.); (Z.S.K.)
| | - Diana V. Aleksanyan
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Str. 1, 119334 Moscow, Russia; (V.A.K.); (S.G.C.); (A.A.S.); (E.I.G.); (S.A.A.); (A.A.K.); (A.S.P.); (Z.S.K.)
- Scientific Laboratory “Advanced Composite Materials and Technologies”, Plekhanov Russian University of Economics, Stremyannyi per. 36, 117997 Moscow, Russia
| | - Svetlana G. Churusova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Str. 1, 119334 Moscow, Russia; (V.A.K.); (S.G.C.); (A.A.S.); (E.I.G.); (S.A.A.); (A.A.K.); (A.S.P.); (Z.S.K.)
| | - Aleksandr A. Spiridonov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Str. 1, 119334 Moscow, Russia; (V.A.K.); (S.G.C.); (A.A.S.); (E.I.G.); (S.A.A.); (A.A.K.); (A.S.P.); (Z.S.K.)
| | - Ekaterina Yu. Rybalkina
- N. N. Blokhin National Medical Research Center of Oncology of the Ministry of Health of the Russian Federation, Kashirskoe shosse 23, 115478 Moscow, Russia;
| | - Evgenii I. Gutsul
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Str. 1, 119334 Moscow, Russia; (V.A.K.); (S.G.C.); (A.A.S.); (E.I.G.); (S.A.A.); (A.A.K.); (A.S.P.); (Z.S.K.)
| | - Svetlana A. Aksenova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Str. 1, 119334 Moscow, Russia; (V.A.K.); (S.G.C.); (A.A.S.); (E.I.G.); (S.A.A.); (A.A.K.); (A.S.P.); (Z.S.K.)
| | - Alexander A. Korlyukov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Str. 1, 119334 Moscow, Russia; (V.A.K.); (S.G.C.); (A.A.S.); (E.I.G.); (S.A.A.); (A.A.K.); (A.S.P.); (Z.S.K.)
| | - Alexander S. Peregudov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Str. 1, 119334 Moscow, Russia; (V.A.K.); (S.G.C.); (A.A.S.); (E.I.G.); (S.A.A.); (A.A.K.); (A.S.P.); (Z.S.K.)
| | - Zinaida S. Klemenkova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Str. 1, 119334 Moscow, Russia; (V.A.K.); (S.G.C.); (A.A.S.); (E.I.G.); (S.A.A.); (A.A.K.); (A.S.P.); (Z.S.K.)
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Konovalov AV, Churusova SG, Aleksanyan DV, Rybalkina EY, Aksenova SA, Peregudov AS, Klemenkova ZS, Kozlov VA. (Aminoalkyl)diphenylphosphine sulfides: synthesis and application as building blocks in the design of multidentate ligands for cytotoxic Pd(II) complexes. Org Biomol Chem 2023; 21:8379-8392. [PMID: 37818804 DOI: 10.1039/d3ob01309j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Amino-functionalized phosphoryl compounds are among the most useful molecular scaffolds in medicinal chemistry, while the potential of their thiophosphorylated analogs, especially those having an alkylamino moiety, is still uncovered. This is mainly due to the lack of convenient synthetic routes to these organophosphorus derivatives. To address this issue, we have suggested the facile approaches to α-(aminomethyl)- and substituted/unsubstituted α-(aminobenzyl)diphenylphosphine sulfides based on either the sequential transformations of (hydroxymethyl)diphenylphosphine sulfide, with the Staudinger reaction of an azide derivative as the key stage, or the addition of Ph2P(S)H to hydrobenzamides followed by the acid hydrolysis. The compounds obtained were reacted with picolinyl chloride to yield functionalized amides which readily underwent direct cyclopalladation, resulting in new representatives of non-classical N-metalated Pd(II) pincer complexes. The latter exhibit promising cytotoxic activity against several human cancer cell lines and apoptosis inducing ability along with the remarkable cytotoxic effects on doxorubicin-resistant cell sublines.
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Affiliation(s)
- Aleksandr V Konovalov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, str. 1, Moscow, 119334, Russia.
- Russian University of Chemical Technology, Miusskaya pl. 9, Moscow, 125047, Russia
| | - Svetlana G Churusova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, str. 1, Moscow, 119334, Russia.
| | - Diana V Aleksanyan
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, str. 1, Moscow, 119334, Russia.
- Scientific Laboratory "Advanced Composite Materials and Technologies", Plekhanov Russian University of Economics, Stremyannyi per. 36, Moscow, 117997, Russia
| | - Ekaterina Yu Rybalkina
- N. N. Blokhin National Medical Research Center of Oncology of the Ministry of Health of the Russian Federation, Kashirskoe shosse 23, Moscow, 115478, Russia
| | - Svetlana A Aksenova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, str. 1, Moscow, 119334, Russia.
- Moscow Institute of Physics and Technology (National Research University), Institutskiy per. 9, Dolgoprudny, Moscow Region, 141700, Russia
| | - Alexander S Peregudov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, str. 1, Moscow, 119334, Russia.
| | - Zinaida S Klemenkova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, str. 1, Moscow, 119334, Russia.
| | - Vladimir A Kozlov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, str. 1, Moscow, 119334, Russia.
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