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Javid N, Jalil S, Munir R, Zia-ur-Rehman M, Sahar A, Arshad S, Iqbal J. 2,1-Benzothiazine - (quinolin/thiophen)yl hydrazone frameworks as new monoamine oxidase inhibitory agents; synthesis, in vitro and in silico investigation. RSC Adv 2023; 13:1701-1710. [PMID: 36712607 PMCID: PMC9828044 DOI: 10.1039/d2ra07045f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 12/23/2022] [Indexed: 01/11/2023] Open
Abstract
Two series of new 2,1-benzothiazine derivatives have been synthesized by condensation of 4-hydrazono-1-methyl-3,4-dihydro-1H-benzo[c][1,2]thiazine 2,2-dioxide (5) with 2-chloroquinoline-3-carbaldehydes and acetylthiophenes to acquire new heteroaryl ethylidenes 7(a-f) and 9(a-k) in excellent yields. After characterization by FTIR, 1H NMR, 13C NMR and elemental analyses, the newly synthesized analogues were investigated against monoamine oxidase enzymes (MAO A and MAO B). The titled compounds exhibited activity in the lower micromolar range among which 9e was the most potent compound against MAO A with IC50 of 1.04 ± 0.01 μM whereas 9h proved to be the most potent derivative against MAO B with an IC50 value of 1.03 ± 0.17 μM. Furthermore, in vitro results were further endorsed by molecular docking studies to determine the interaction between the potent compounds and the enzyme active site. These newly synthesized compounds represent promising hits for the development of safer and potent lead molecules for therapeutic use against depression and other neurological diseases.
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Affiliation(s)
- Noman Javid
- School of Chemistry, University of the PunjabLahore54590Pakistan,Chemistry Department (C-Block), Forman Christian CollegeFerozepur Road LahorePakistan
| | - Saquib Jalil
- Centre for Advanced Drug Research, COMSATS University Islamabad, Abbottabad CampusAbbottabad22060Pakistan+92-992-383441+92-992-383591-96
| | - Rubina Munir
- Department of Chemistry, Kinnaird College for WomenLahore 54000Pakistan
| | | | - Amna Sahar
- Department of Chemistry, Kinnaird College for WomenLahore 54000Pakistan
| | - Sara Arshad
- Department of Chemistry, Kinnaird College for WomenLahore 54000Pakistan
| | - Jamshed Iqbal
- Centre for Advanced Drug Research, COMSATS University Islamabad, Abbottabad CampusAbbottabad22060Pakistan+92-992-383441+92-992-383591-96
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Shishkina SV, Shaposhnyk AM, Baumer VN, Voloshchuk NI, Bondarenko PS, Ukrainets IV. 1-Allyl-4-hydroxy-2,2-dioxo-N-(4-methoxyphenyl)-1H-2λ 6,1-benzothiazine-3-carboxamide: polymorphic transition due to grinding with the loss of the biological activity. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2022; 78:70-79. [PMID: 35129121 DOI: 10.1107/s2052520621013093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 12/09/2021] [Indexed: 06/14/2023]
Abstract
A study of two polymorphic forms of 1-allyl-4-hydroxy-2,2-dioxo-N-(4-methoxyphenyl)-1-2λ6,1-benzothiazine-3-carboxamide (a structural analogue of piroxicam) has revealed some regularities in the crystal structure formation due to different evaporation rates from the tested solvents. The monoclinic polymorph crystallized from ethyl acetate is formed due to a large number of very weak C-H...O and C-H...π interactions as well as one strong stacking interaction. The triclinic polymorph crystallized from N,N-dimethylformamide is formed due to a small number of weak specific interactions and a maximal number of strong stacking interactions. The stacked dimer is a complex building unit in both polymorphic structures. Further analysis showed that the monoclinic structure is layered while the triclinic one is columnar. The two polymorphic structures also differ in their biological activity (antidiuretic and analgesic). The monoclinic polymorph possesses very high biological activity while the triclinic polymorph is almost inactive. The polymorphic transition of the biologically active metastable monoclinic structure into the inactive stable triclinic one within four weeks of grinding is caused by orientational factors rather than conformational ones and is accompanied by a change in the redistribution of interaction energies in the crystal from anisotropic to more isotropic. Thus, a slow polymorphic transition after grinding results in a loss of the biological activity.
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Affiliation(s)
- Svitlana V Shishkina
- SSI "Institute for Single Crystals" NAS of Ukraine, 60 Nauky ave., Kharkiv, 61001, Ukraine
| | - Anna M Shaposhnyk
- SSI "Institute for Single Crystals" NAS of Ukraine, 60 Nauky ave., Kharkiv, 61001, Ukraine
| | - Vyacheslav N Baumer
- SSI "Institute for Single Crystals" NAS of Ukraine, 60 Nauky ave., Kharkiv, 61001, Ukraine
| | - Natali I Voloshchuk
- N.I. Pirogov Vinnitsa National Medical University, 56 Pirogov str., Vinnitsa, 21018, Ukraine
| | - Pavlo S Bondarenko
- N.I. Pirogov Vinnitsa National Medical University, 56 Pirogov str., Vinnitsa, 21018, Ukraine
| | - Igor V Ukrainets
- National University of Pharmacy, 4 Valentinovska str., Kharkiv, 61002, Ukraine
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Shishkina SV, Petrushova LA, Burian KO, Fedosov AI, Ukrainets IV. Methyl 5-chloro-4-hy-droxy-2,2-dioxo-1 H-2λ 6,1-benzo-thia-zine-3-carboxyl-ate: structure and Hirshfeld surface analysis. Acta Crystallogr E Crystallogr Commun 2020; 76:1657-1660. [PMID: 33117584 PMCID: PMC7534242 DOI: 10.1107/s2056989020012566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 09/15/2020] [Indexed: 12/02/2022]
Abstract
The title compound, C10H8ClNO5S, which has potential analgesic activity, crystallizes in space group P21/n. The benzo-thia-zine ring system adopts an inter-mediate form between sofa and twist-boat conformations. The coplanarity of the ester substituent to the bicyclic fragment is stabilized by an O-H⋯O intra-molecular hydrogen bond. In the crystal, hydrogen bonds of type N-H⋯O(SO2) link the mol-ecules into zigzag chains extending along the b-axis direction. Neighbouring chains are linked by both O-H⋯Cl and C-H⋯Cl inter-actions. A Hirshfeld surface analysis was used to compare different types of inter-molecular inter-actions, giving contributions of O⋯H/H⋯O = 42.0%, C⋯H/H⋯C = 17.3%, Cl⋯H/H⋯Cl = 14.2%, H⋯H = 11.1%.
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Affiliation(s)
- Svitlana V. Shishkina
- SSI Institute for Single Crystals’ National Academy of Science of Ukraine, 60 Nauky ave., Kharkiv 61001, Ukraine
- Department of Inorganic Chemistry, V. N. Karazin Kharkiv National University, 4 Svobody Sq., Kharkiv 61077, Ukraine
| | | | - Kateryna O. Burian
- National University of Pharmacy, 4 Valentynivska St, Kharkiv 61168, Ukraine
| | - Andrii I. Fedosov
- National University of Pharmacy, 4 Valentynivska St, Kharkiv 61168, Ukraine
| | - Igor V. Ukrainets
- National University of Pharmacy, 4 Valentynivska St, Kharkiv 61168, Ukraine
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Methyl 4-Hydroxy-2,2-Dioxo-1H-2λ6,1-Benzothiazine-3-Carboxylate and Its Analogs Modified in the Benzene Moiety of the Molecule as New Analgesics. Sci Pharm 2020. [DOI: 10.3390/scipharm88010010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In order to identify new regularities of the “structure–analgesic activity” relationship in the series of 2,1-benzothiazine derivatives, the synthesis of methyl 4-hydroxy-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxylate and a group of its analogs substituted in the benzene moiety of the molecule, as well as their mono-and diammonium salts, was performed with tris(hydroxymethyl)aminomethane. The algorithm was proposed; it allows for uniquely solving the question of the nature of the substituent and its true position in the benzothiazine core based on the complex use of NMR (1H and 13C) and mass spectrometry data. Using single-crystal X-ray diffraction analysis it was proven that salt formation first passes through the cyclic sulfamide group and only then through the 4-hydroxyl group, and is always accompanied by a significant conformational rearrangement of the molecule. Based on the results of pharmacological tests it was found that modification of the benzene moiety of the molecule can be used as a method for enhancing the analgesic properties of the class of compounds studied. The presence of a substitute in position 7 is particularly effective, regardless of its nature. A comparative analysis of the analgesic activity of the initial esters and their mono- and diammonium salts convincingly showed that the common belief about a direct relationship between the solubility of a substance and the level of its biological effect is not always true. As it turned out, increasing the solubility in water can lead to a variety of consequences: From a significant increase in analgesia to its complete elimination. It was suggested that the analgesic activity of the compounds studied is determined not by solubility, but by the molecular conformations formed during their obtainment.
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Shishkina SV, Ukrainets IV, Vashchenko OV, Voloshchuk NI, Bondarenko PS, Petrushova LA, Sim G. Biological properties of two enantiomorphic forms of N-(2,6-dimethylphenyl)-4-hydroxy-2,2-dioxo-1H-2λ 6,1-benzothiazine-3-carboxamide, a structural analogue of piroxicam. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2020; 76:69-74. [PMID: 31919309 DOI: 10.1107/s2053229619016450] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 12/06/2019] [Indexed: 11/10/2022]
Abstract
The title benzothiazine-3-carboxamide, C17H16N2O4S, crystallized in two enantiomorphic crystal forms with the space groups P32 and P31 despite the absence of a classic stereogenic atom. The molecular structures are mirror images of each other. Only one sulfonyl O atom takes part in intramolecular hydrogen bonding as a proton acceptor and this atom is different in the two enantiomorphic structures. As a result, the S atom becomes a pseudo-stereogenic centre. This fact is worth taking into account due to the different biological activities of the enantiomorphic forms. One form possesses a high analgesic activity, while the other form revealed a high anti-inflammatory activity.
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Affiliation(s)
- Svitlana V Shishkina
- SSI `Institute for Single Crystals' NAS of Ukraine, 60 Nauky ave., Kharkiv 61001, Ukraine
| | - Igor V Ukrainets
- Department of Pharmaceutical Chemistry, National University of Pharmacy, 53 Pushkinska St., Kharkiv 61002, Ukraine
| | - Olga V Vashchenko
- Institute for Scintillation Materials NAS of Ukraine, 60 Nauky ave., Kharkiv 61001, Ukraine
| | - Natali I Voloshchuk
- Department of Pharmacology, N.I. Pirogov Vinnitsa National Medical University, 56 Pirogov St., Vinnitsa 21018, Ukraine
| | - Pavlo S Bondarenko
- Department of Pharmacology, N.I. Pirogov Vinnitsa National Medical University, 56 Pirogov St., Vinnitsa 21018, Ukraine
| | - Lidiya A Petrushova
- Department of Pharmaceutical Chemistry, National University of Pharmacy, 53 Pushkinska St., Kharkiv 61002, Ukraine
| | - Galina Sim
- Department of Pharmaceutical Chemistry, Far Eastern State Medical University, 35 Murav'ev-Amursky St., Khabarovsk 680000, Russian Federation
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Synthesis and Regularities of the Structure–Activity Relationship in a Series of N-Pyridyl-4-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxamides. Sci Pharm 2019. [DOI: 10.3390/scipharm87020012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
According to our quantum and chemical calculations 4-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxylic acid imidazolide is theoretically almost as reactive as its 2-carbonyl analog, and it forms the corresponding N-pyridyl-4-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxamides with many aminopyridines. However, in practice, the sulfo group introduces significant changes at times and prevents the acylation of sterically hindered amines. One of these products was 2-amino-6-methylpyridine. Thus, it has been concluded that aminopyridines interact with imidazolide in aromatic form where the target for the initial electrophilic attack is the ring nitrogen. To confirm the structure of all substances synthesized, 1H-NMR spectroscopy and X-ray diffraction analysis were used. From X-ray diffraction data it follows that in the crystalline phase the carbonyl and sulfo group may occupy different positions with respect to the plane of the benzothiazine bicycle: this position may be unilateral, typical for 4-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxamides, versatile, and not yet encountered in compounds of this type. A comparison of these data with the results of the pharmacological screening conducted on the standard model of carrageenan inflammation showed that the N-pyridylamides of the first group demonstrated a direct dependence of their analgesic and anti-inflammatory activity on the mutual arrangement of the planes of the benzothiazine and pyridine fragments. The new molecular conformation of the benzothiazine nucleus provides a sufficiently high level of analgesic (but not anti-inflammatory) properties in all N-pyridylamides of the second group with an extremely weak dependence on the spatial arrangement of the pyridine cycle. All substances presented this article proved themselves in varying degrees as analgesics and antiphlogistics. Moreover, two of them—N-(5-methylpyridin-2-yl)- and N-(pyridin-3-yl)-4-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxamides—exceeded the most effective drug of oxicam type Lornoxicam by these indicators.
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