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Kayukova L, Vologzhanina A. A New 2-Aminospiropyrazolylammonium Cation with Possible Uses in the Topical Areas of Ionic Liquids. Molecules 2024; 29:2326. [PMID: 38792187 PMCID: PMC11124009 DOI: 10.3390/molecules29102326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 05/08/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
Based on the fact that 2-aminospiropyrazolinium compounds and structurally related azoniaspiro compounds belong, in a broad sense, to the class of ionic liquids, we have reviewed them and studied their practical applications. To search for possible uses of a new 2-aminospiropyrazolinium compounds, it is necessary to undertake a comparison with the related class of azoniaspiro compounds based on available information. The structures of the well-studied class of azoniaspiro compounds and the related but little-studied class of 2-aminospiropyrazolinium have rigid frameworks, limited conformational freedom, and a salt nature. These properties give them the ability to organize the nearby molecular space and enable the structure-forming ability of azoniaspiro compounds in the synthesis of zeolites, as well as the ability to act as phase-transfer catalysts and have selective biological effects. Additionally, these characteristics enable their ability to act as electrolytes and serve as materials for anion exchange membranes in fuel cells and water electrolyzers. Thus, the well-studied properties of azoniaspiro compounds as phase-transfer catalysts, structure-directing agents, electrolytes, and materials for membranes in power sources would encourage the study of the similar properties of 2-aminospiropyrazolinium compounds, which we have studied in relation to in vitro antitubercular, antidiabetic, and antimicrobial activities.
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Affiliation(s)
- Lyudmila Kayukova
- Laboratory of Chemistry of Synthetic and Natural Drug Substances, JSC A.B. Bekturov Institute of Chemical Sciences, 106 Shokan Ualikhanov Str., 050010 Almaty, Kazakhstan
| | - Anna Vologzhanina
- X-ray Diffraction Laboratory, A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., B-334, 119334 Moscow, Russia;
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Kayukova LA, Vologzhanina AV, Yergaliyeva EM, Baitursynova GP, Shulgau ZT, Sergazy S. Crystal structure and antidiabetic activity of 2-aminospiropyrazolinium tosylates and the product of O-tosylation of β-(benzimidazol-1-yl)propioamidoxime. Acta Crystallogr C 2022; 78:542-551. [PMID: 36196787 DOI: 10.1107/s2053229622008464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 08/23/2022] [Indexed: 11/10/2022] Open
Abstract
2-Amino-1,5-diazaspiro[4.5]dec-1-en-5-ium salts possess bioactivity tuned by the nature of the heteroatoms in the six-membered ring and the counter-ion. The molecular environment of these cations in solids provides an opportunity to establish the conformations and hydrogen-bonding patterns typical for this family. β-Aminopropioamidoxime tosylation products [2-amino-1,5-diazaspiro[4.5]dec-1-en-5-ium tosylates and the product of the O-tosylation of β-(benzimidazol-1-yl)propioamidoxime, namely, 2-amino-1,5-diazaspiro[4.5]dec-1-en-5-ium tosylate, C8H16N3+·C7H7O3S- (6), 2-amino-8-oxa-1,5-diazaspiro[4.5]dec-1-en-5-ium tosylate, C7H14N3O+·C7H7O3S- (7), the monohydrate of 7, C7H14N3O+·C7H7O3S-·H2O (7a), 2-amino-8-thia-1,5-diazaspiro[4.5]dec-1-en-5-ium tosylate, C7H14N3S+·C7H7O3S- (8), 2-amino-8-phenyl-1,5,8-triazaspiro[4.5]dec-1-en-5-ium tosylate, C13H19N4+·C7H7O3S- (9), and 3-(1H-benzimidazol-1-yl)-N'-(tosyloxy)propanimidamide, C17H18N4O3S (10)] were investigated using X-ray diffraction to study peculiarities of their molecular geometry and intermolecular interactions. In vitro antitubercular and antidiabetic screening of the β-aminopropioamidoxime tosylation products was also carried out. It was revealed that this series of compounds does not have activity against drug-sensitive and multidrug-resistant M. tuberculosis strains, and exhibits high and moderate antidiabetic α-amylase and α-glucosidase activity. Using the hydrogen-bond propensity tool, we found that the inclination of counter-ions and atoms to act as acceptors of hydrogen bonds for the amino group decreases passing from tosylate O atoms to water molecules and the N atoms of five-membered rings. This fact is probably the reason for the formation in the solids of hydrogen-bonded tetramers consisting of two anions and two cations, and the rare occurrence of 2-aminospiropyrazolinium salt hydrates.
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Affiliation(s)
- Lyudmila A Kayukova
- JSC, A.B. Bekturov Institute of Chemical Sciences, 106 Shokan Ualikhanov str., Almaty 050010, Kazakhstan
| | - Anna V Vologzhanina
- A.N. Nesmeyanov Institute of Organoelement Compounds, RAS, Vavilova str. 28, Moscow 119332, Russian Federation
| | - Elmira M Yergaliyeva
- JSC, A.B. Bekturov Institute of Chemical Sciences, 106 Shokan Ualikhanov str., Almaty 050010, Kazakhstan
| | - Gulnur P Baitursynova
- JSC, A.B. Bekturov Institute of Chemical Sciences, 106 Shokan Ualikhanov str., Almaty 050010, Kazakhstan
| | - Zarina T Shulgau
- RSE National Center for Biotechnology SC of ME&S RK, 13/5 Kurgalzhynskoye road, Nur-Sultan 010000, Kazakhstan
| | - Shynggys Sergazy
- RSE National Center for Biotechnology SC of ME&S RK, 13/5 Kurgalzhynskoye road, Nur-Sultan 010000, Kazakhstan
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Reaction Products of β-Aminopropioamidoximes Nitrobenzenesulfochlorination: Linear and Rearranged to Spiropyrazolinium Salts with Antidiabetic Activity. Molecules 2022; 27:molecules27072181. [PMID: 35408580 PMCID: PMC9000269 DOI: 10.3390/molecules27072181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 03/20/2022] [Accepted: 03/24/2022] [Indexed: 12/10/2022] Open
Abstract
Nitrobenzenesulfochlorination of β-aminopropioamidoximes leads to a set of products depending on the structure of the initial interacting substances and reaction conditions. Amidoximes, functionalized at the terminal C atom with six-membered N-heterocycles (piperidine, morpholine, thiomorpholine and phenylpiperazine), as a result of the spontaneous intramolecular heterocyclization of the intermediate reaction product of an SN2 substitution of a hydrogen atom in the oxime group of the amidoxime fragment by a nitrobenzenesulfonyl group, produce spiropyrazolinium ortho- or para-nitrobenzenesulfonates. An exception is ortho-nitrobenzenesulfochlorination of β-(thiomorpholin-1-yl)propioamidoxime, which is regioselective at room temperature, producing two spiropyrazolinium salts (ortho-nitrobezenesulfonate and chloride), and regiospecific at the boiling point of the solvent, when only chloride is formed. The para-Nitrobezenesulfochlorination of β-(benzimidazol-1-yl)propioamidoxime, due to the reduced nucleophilicity of the aromatic β-amine nitrogen atom, is regiospecific at both temperatures, and produces the O-para-nitrobenzenesulfochlorination product. The antidiabetic screening of the new nitrobezenesulfochlorination amidoximes found promising samples with in vitro α-glucosidase activity higher than the reference drug acarbose. 1H-NMR spectroscopy and X-ray analysis revealed the slow inversion of six-membered heterocycles, and experimentally confirmed the presence of an unfavorable stereoisomer with an axial N–N bond in the pyrazolinium heterocycle.
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Kayukova LA, Yergaliyeva EM, Vologzhanina AV. Redetermination of the structure of 2-amino-8-thia-1,5-di-aza-spiro-[4.5]dec-1-en-5-ium chloride monohydrate. Acta Crystallogr E Crystallogr Commun 2022; 78:164-168. [PMID: 35145744 PMCID: PMC8819427 DOI: 10.1107/s2056989022000111] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 01/05/2022] [Indexed: 12/05/2022]
Abstract
The reaction of β-(thio-morpholin-1-yl)propio-amidoxime with tosyl chloride in CHCl3 in the presence of DIPEA when heated at 343 K for 8 h afforded the title hydrated salt, C7H14N3S+·Cl-·H2O, in 84% yield. This course of the tosyl-ation reaction differs from the result of tosyl-ation obtained for this substrate at room temperature, when only 2-amino-8-thia-1,5-di-aza-spiro-[4.5]dec-1-ene-5-ammonium tosyl-ate was isolated in 56% yield. The structure of the reaction product was established by physicochemical methods, spectroscopy, and X-ray diffraction. The single-crystal data demonstrated that the previously reported crystal structure of this compound [Kayukova et al. (2021). Chem. J. Kaz, 74, 21-31] had been refined in a wrong space group. In the extended structure, the chloride anions, water mol-ecules and amine groups of the cations form two-periodic hydrogen-bonded networks with the fes topology.
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Affiliation(s)
- Lyudmila A. Kayukova
- JSC A. B. Bekturov Institute of Chemical Sciences, 106 Shokan Ualikhanov str., 050010, Almaty, Kazakhstan
| | - Elmira M. Yergaliyeva
- JSC A. B. Bekturov Institute of Chemical Sciences, 106 Shokan Ualikhanov str., 050010, Almaty, Kazakhstan
| | - Anna V. Vologzhanina
- X-Ray Structural Centre, A.N. Nesmeyanov Institute of Organoelement Compounds, RAS, 28 Vavilova str., 119991 Moscow, Russian Federation
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Boulton-Katritzky Rearrangement of 5-Substituted Phenyl-3-[2-(morpholin-1-yl)ethyl]-1,2,4-oxadiazoles as a Synthetic Path to Spiropyrazoline Benzoates and Chloride with Antitubercular Properties. Molecules 2021; 26:molecules26040967. [PMID: 33673047 PMCID: PMC7917742 DOI: 10.3390/molecules26040967] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/18/2021] [Accepted: 01/23/2021] [Indexed: 11/17/2022] Open
Abstract
The analysis of stability of biologically active compounds requires an accurate determination of their structure. We have found that 5-aryl-3-(2-aminoethyl)-1,2,4-oxadiazoles are generally unstable in the presence of acids and bases and are rearranged into the salts of spiropyrazolinium compounds. Hence, there is a significant probability that it is the rearranged products that should be attributed to biological activity and not the primarily screened 5-aryl-3-(2-aminoethyl)-1,2,4-oxadiazoles. A series of the 2-amino-8-oxa-1,5-diazaspiro[4.5]dec-1-en-5-ium (spiropyrazoline) benzoates and chloride was synthesized by Boulton–Katritzky rearrangement of 5-substituted phenyl-3-[2-(morpholin-1-yl)ethyl]-1,2,4-oxadiazoles and characterized using FT-IR and NMR spectroscopy and X-ray diffraction. Spiropyrazolylammonium chloride demonstrates in vitro antitubercular activity on DS (drug-sensitive) and MDR (multidrug-resistant) of MTB (M. tuberculosis) strains (1 and 2 µg/mL, accordingly) equal to the activity of the basic antitubercular drug rifampicin; spiropyrazoline benzoates exhibit an average antitubercular activity of 10–100 μg/mL on MTB strains. Molecular docking studies revealed a series of M. tuberculosis receptors with the energies of ligand–receptor complexes (−35.8–−42.8 kcal/mol) close to the value of intermolecular pairwise interactions of the same cation in the crystal of spiropyrazolylammonium chloride (−35.3 kcal/mol). However, only in complex with transcriptional repressor EthR2, both stereoisomers of the cation realize similar intermolecular interactions.
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Arylsulfochlorination of β-aminopropioamidoximes giving 2-aminospiropyrazolylammonium arylsulfonates. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-2789-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Frenna V, Lo Meo P, Palumbo Piccionello A, Spinelli D. Unexpected Substituent Effects in the Iso-Heterocyclic Boulton-Katritzky Rearrangement of 3-Aroylamino-5-methyl-1,2,4-oxadiazoles: A Mechanistic Study. J Phys Chem A 2019; 123:10004-10010. [PMID: 31619037 DOI: 10.1021/acs.jpca.9b08675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The kinetics of the iso-heterocyclic mononuclear rearrangement of some 3-aroylamino-5-methyl-1,2,4-ozadiazoles was carefully examined under largely variable acidic or alkaline conditions. This reaction may proceed via two different mechanistic pathways (an uncatalyzed and a base-catalyzed one), as accounted for also by the evaluation of the relevant activation parameters. Substituent effects, as quantified by means of the Hammett's equation, appear relatively modest; however, they reveal some interesting anomalies, which enabled us to draw a very precise picture of the intimate reaction course.
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Affiliation(s)
- Vincenzo Frenna
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF) , Università degli Studi di Palermo , V.le delle Scienze pad. 17 , 90128 Palermo , Italy
| | - Paolo Lo Meo
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF) , Università degli Studi di Palermo , V.le delle Scienze pad. 17 , 90128 Palermo , Italy
| | - Antonio Palumbo Piccionello
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF) , Università degli Studi di Palermo , V.le delle Scienze pad. 17 , 90128 Palermo , Italy
| | - Domenico Spinelli
- Department of Chemistry "G. Ciamician" , Alma Mater Studiorum, Università di Bologna , Via Selmi 2 , 40126 Bologna , Italy
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Micheletti G, Frenna V, Macaluso G, Boga C, Spinelli D. Mononuclear Rearrangement of the Z-Phenylhydrazones of Some 3-Acyl-1,2,4-oxadiazoles: Effect of Substituents on the Nucleophilic Character of the >C═N-NH-C 6 H 5 Chain and on the Charge Density of N-2 of the 1,2,4-Oxadiazole Ring (Electrophilic Counterpart). J Org Chem 2019; 84:2462-2469. [PMID: 30695638 DOI: 10.1021/acs.joc.8b02305] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reaction rates for the mononuclear rearrangement of the Z-phenylhydrazones of 3-acyl-1,2,4-oxadiazoles 3a-c into the relevant 2-phenyl-2 H-1,2,3-triazoles (4a-c) have been measured in dioxane/water at different temperatures in a large range of proton concentrations. The occurrence of two different reaction pathways (one uncatalyzed, water assisted, and the other general base catalyzed) has- been observed. The obtained results have been able to furnish information about the effects of the nature of the 3-acyl structure and of the 5-substituents in the 1,2,4-oxadiazole ring on the reactivity of the examined rearrangements: they are well in line with the previsions carried out considering some our previous computational results as well as experimental kinetic ones.
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Affiliation(s)
- Gabriele Micheletti
- Department of Industrial Chemistry "Toso Montanari" ALMA MATER STUDIORUM , Università di Bologna , Viale del Risorgimento 4 , 40136 Bologna , Italy
| | - Vincenzo Frenna
- Department STEMBIO , Università di Palermo , Viale delle Scienze-Parco d'Orleans II , 90128 Palermo , Italy
| | - Gabriella Macaluso
- Department STEMBIO , Università di Palermo , Viale delle Scienze-Parco d'Orleans II , 90128 Palermo , Italy
| | - Carla Boga
- Department of Industrial Chemistry "Toso Montanari" ALMA MATER STUDIORUM , Università di Bologna , Viale del Risorgimento 4 , 40136 Bologna , Italy
| | - Domenico Spinelli
- Department of Chemistry 'G. Ciamician' ALMA MATER STUDIORUM , Università di Bologna , Via Selmi 2 , 40126 Bologna , Italy
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