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Harish Chinthal C, Yathirajan HS, Manju N, Kalluraya B, Foro S, Glidewell C. Reduced 3,4'-bi-pyrazoles carrying thio-phene and thia-zole substituents: structures of two intermediates and two products. Acta Crystallogr E Crystallogr Commun 2021; 77:335-340. [PMID: 33936753 PMCID: PMC8025870 DOI: 10.1107/s2056989021002310] [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: 02/05/2021] [Accepted: 02/28/2021] [Indexed: 12/03/2022]
Abstract
Cyclo-addition reactions between 3-(5-ar-yloxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)-1-(thio-phen-2-yl)prop-2-en-1-ones and thio-semicarbazide leads to the formation of reduced 3,4'-bi-pyrazole-2-carbo-thio-amides. Further cyclo-addition of these inter-mediates with either diethyl acetyl-enedi-carboxyl-ate or 4-bromo-phenacyl bromide leads to reduced 3,4'-bi-pyrazoles carrying oxo-thia-zole or thia-zole substituents, respectively. The structures of two representative inter-mediates and two representative products established unambiguously the regiochemistry of the cyclo-addition reactions. The mol-ecules of 3'-methyl-5'-(2-methyl-phen-oxy)-1'-phenyl-5-(thio-phen-2-yl)-3,4-di-hydro-1'H,2H-3,4'-bi-pyra-zole-2-carbo-thio-amide, C25H23N5OS2 (Ia), are linked by N-H⋯N hydrogen bonds to form simple C(8) chains. The analogous compound 5'-(2,4-di-chloro-phen-oxy)-3'-methyl-1'-phenyl-5-(thio-phen-2-yl)-3,4-di-hydro-1'H,2H-3,4'-bi-pyra-zole-2-carbo-thio-amide hemihydrate crystallizes as a hemihydrate, C24H19Cl2N5OS2·0.5H2O (Ib), and the independent components are linked into a chain of spiro-fused R 4 4(20) rings by a combination of O-H⋯N and N-H⋯O hydrogen bonds. In the structure of ethyl (Z)-2-{2-[3'-methyl-1'-phenyl-5-(thio-phen-2-yl)-5'-(2-methyl-phen-oxy)-3,4-di-hydro-1'H,2H-3,4'-bi-pyrazole-2-yl]-4-oxo-4,5-di-hydro-thia-zol-5-yl-idene}acetate, C31H27N5O4S2 (II), inversion-related pairs of mol-ecules are linked by paired C-H⋯π(arene) hydrogen bonds to form cyclic centrosymmetric dimers, but there are no direction-specific inter-molecular inter-actions in 4-(4-bromo-phen-yl)-2-[5'-(2,4-di-chloro-phen-oxy)-3'-methyl-1'-phenyl-5-(thio-phen-2-yl)-3,4-di-hydro-1'H,2H-3,4'-bi-pyrazole-2-yl]-4-thia-zole, C32H22BrCl2N5OS2 (III). Comparisons are made with the structures of some related compounds.
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Affiliation(s)
| | - Hemmige S. Yathirajan
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru-570 006, India
| | - Nagaraja Manju
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Mangalore-574 199, India
| | - Balakrishna Kalluraya
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Mangalore-574 199, India
| | - Sabine Foro
- Institute of Materials Science, Darmstadt University of Technology, Alarich-Weiss-Strasse 2, D-64287 Darmstadt, Germany
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Affiliation(s)
- Kamal M. Dawood
- Department of Chemistry, Faculty of Science Cairo University Giza 12613 Egypt
| | - Ashraf A. Abbas
- Department of Chemistry, Faculty of Science Cairo University Giza 12613 Egypt
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Kiran Kumar H, Yathirajan HS, Asma, Manju N, Kalluraya B, Rathore RS, Glidewell C. Functionalized 3-(5-ar-yloxy-3-methyl-1-phenyl-1 H-pyrazol-4-yl)-1-(4-substituted-phen-yl)prop-2-en-1-ones: synthetic pathway, and the structures of six examples. Acta Crystallogr E Crystallogr Commun 2020; 76:683-691. [PMID: 32431933 PMCID: PMC7199250 DOI: 10.1107/s2056989020005113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 04/11/2020] [Indexed: 11/11/2022]
Abstract
Five examples each of 3-(5-ar-yloxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)-1-[4-(prop-2-yn-1-yl-oxy)phen-yl]prop-2-en-1-ones and the corresponding 1-(4-azido-phen-yl)-3-(5-ar-yloxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)prop-2-en-1-ones have been synthesized in a highly efficient manner, starting from a common source precursor, and structures have been determined for three examples of each type. In each of 3-[5-(2-chloro-phen-oxy)-3-methyl-1-phenyl-1H-pyrazol-4-yl]-1-[4-(prop-2-yn-1-yl-oxy)phen-yl]prop-2-en-1-one, C28H21ClN2O3, (Ib), the isomeric 3-[5-(2-chloro-phen-oxy)-3-methyl-1-phenyl-1H-pyrazol-4-yl]-1-[4-(prop-2-yn-1-yl-oxy)phen-yl]prop-2-en-1-one, (Ic), and 3-[3-methyl-5-(naphthalen-2-yl-oxy)-1-phenyl-1H-pyrazol-4-yl]-1-[4-(prop-2-yn-yloxy)phen-yl]prop-2-en-1-one, C32H24N2O3, (Ie), the mol-ecules are linked into chains of rings, formed by two independent C-H⋯O hydrogen bonds in (Ib) and by a combination of C-H⋯O and C-H⋯π(arene) hydrogen bonds in each of (Ic) and (Ie). There are no direction-specific inter-molecular inter-actions in the structure of 1-(4-azido-phen-yl)-3-[3-methyl-5-(2-methyl-phen-oxy)-1-phenyl-1H-pyrazol-4-yl]prop-2-en-1-one, C26H21N5O2, (IIa). In 1-(4-azido-phen-yl)-3-[5-(2,4-di-chloro-phen-oxy)-3-methyl-1-phenyl-1H-pyrazol-4-yl]prop-2-en-1-one, C25H17Cl2N5O2, (IId), the di-chloro-phenyl group is disordered over two sets of atomic sites having occupancies 0.55 (4) and 0.45 (4), and the mol-ecules are linked by a single C-H⋯O hydrogen bond to form cyclic, centrosymmetric R 2 2(20) dimers. Similar dimers are formed in 1-(4-azido-phen-yl)-3-[3-methyl-5-(naphthalen-2-yl-oxy)-1-phenyl-1H-pyrazol-4-yl]prop-2-en-1-one, C29H21N5O2, (IIe), but here the dimers are linked into a chain of rings by two independent C-H..π(arene) hydrogen bonds. Comparisons are made between the mol-ecular conformations within both series of compounds.
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Affiliation(s)
- Haruvegowda Kiran Kumar
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru-570 006, India
| | - Hemmige S. Yathirajan
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru-570 006, India
| | - Asma
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Mangalore-574199, India
| | - Nagaraja Manju
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Mangalore-574199, India
| | - Balakrishna Kalluraya
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Mangalore-574199, India
| | - Ravindranath S. Rathore
- Department of Bioinformatics, School of Earth, Biological and Environmental Sciences, Central University of South Bihar, Gaya-824236, India
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Cuartas V, Robledo SM, Vélez ID, Crespo MDP, Sortino M, Zacchino S, Nogueras M, Cobo J, Upegui Y, Pineda T, Yepes L, Insuasty B. New thiazolyl‐pyrazoline derivatives bearing nitrogen mustard as potential antimicrobial and antiprotozoal agents. Arch Pharm (Weinheim) 2020; 353:e1900351. [DOI: 10.1002/ardp.201900351] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 02/24/2020] [Accepted: 02/25/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Viviana Cuartas
- Grupo de Investigación de Compuestos Heterocíclicos, Departamento de QuímicaUniversidad del ValleCali Colombia
- Centre for Bioinformatics and Photonics‐CIBioFIUniversidad del ValleCali Colombia
| | - Sara M. Robledo
- PECET, Instituto de Investigaciones Médicas, Facultad de MedicinaUniversidad de AntioquiaMedellín Colombia
| | - Iván D. Vélez
- PECET, Instituto de Investigaciones Médicas, Facultad de MedicinaUniversidad de AntioquiaMedellín Colombia
| | - María del Pilar Crespo
- Grupo de Biotecnología e Infecciones Bacterianas, Departamento de MicrobiologíaUniversidad del ValleCali Colombia
| | - Maximiliano Sortino
- Área Farmacognosia, Facultad de Ciencias Bioquímicas y FarmacéuticasUniversidad Nacional de RosarioRosario Argentina
| | - Susana Zacchino
- Área Farmacognosia, Facultad de Ciencias Bioquímicas y FarmacéuticasUniversidad Nacional de RosarioRosario Argentina
| | - Manuel Nogueras
- Department of Inorganic and Organic ChemistryUniversidad de JaénJaén Spain
| | - Justo Cobo
- Department of Inorganic and Organic ChemistryUniversidad de JaénJaén Spain
| | - Yulieth Upegui
- PECET, Instituto de Investigaciones Médicas, Facultad de MedicinaUniversidad de AntioquiaMedellín Colombia
| | - Tatiana Pineda
- PECET, Instituto de Investigaciones Médicas, Facultad de MedicinaUniversidad de AntioquiaMedellín Colombia
| | - Lina Yepes
- PECET, Instituto de Investigaciones Médicas, Facultad de MedicinaUniversidad de AntioquiaMedellín Colombia
| | - Braulio Insuasty
- Grupo de Investigación de Compuestos Heterocíclicos, Departamento de QuímicaUniversidad del ValleCali Colombia
- Centre for Bioinformatics and Photonics‐CIBioFIUniversidad del ValleCali Colombia
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Shaibah MAE, Yathirajan HS, Asma, Manju N, Kalluraya B, Rathore RS, Glidewell C. Conversion of di-aryl-chalcones into 4,5-di-hydro-pyrazole-1-carbo-thio-amides: mol-ecular and supra-molecular structures of two precursors and three products. Acta Crystallogr E Crystallogr Commun 2020; 76:360-365. [PMID: 32148876 PMCID: PMC7057378 DOI: 10.1107/s2056989020001735] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 02/07/2020] [Indexed: 11/26/2022]
Abstract
Chalcones of type 4-XC6H4C(O)CH=CHC6H4(OCH2CCH)-4, where X = Cl, Br or MeO, have been converted to the corresponding 4,5-di-hydro-pyrazole-1-carbo-thio-amides using a cyclo-condensation reaction with thio-semicarbazide. The chalcones 1-(4-chloro-phen-yl)-3-[4-(prop-2-yn-yloxy)phen-yl]prop-2-en-1-one, C18H13ClO2, (I), and 1-(4-bromo-phen-yl)-3-[4-(prop-2-yn-yloxy)phen-yl]prop-2-en-1-one, C18H13BrO2, (II), are isomorphous, and their mol-ecules are linked into sheets by two independent C-H⋯π(arene) inter-actions, both involving the same aryl ring with one C-H donor approaching each face. In each of the products (RS)-3-(4-chloro-phen-yl)-5-[4-(prop-2-yn-yloxy)phen-yl]-4,5-di-hydro-pyrazole-1-carbo-thio-amide, C19H16ClN3OS, (IV), (RS)-3-(4-bromo-phen-yl)-5-[4-(prop-2-yn-yloxy)phen-yl]-4,5-di-hydro-pyrazole-1-carbo-thio-amide, C19H16BrN3OS, (V), and (RS)-3-(4-meth-oxy-phen-yl)-5-[4-(prop-2-yn-yloxy)phen-yl]-4,5-di-hydro-pyrazole-1-carbo-thio-amide, C20H19N3O2S, (VI), the reduced pyrazole ring adopts an envelope conformation with the C atom bearing the 4-prop-2-yn-yloxy)phenyl substituent, which occupies the axial site, displaced from the plane of the four ring atoms. Compounds (IV) and (V) are isomorphous and their mol-ecules are linked into chains of edge-fused rings by a combination of N-H⋯S and C-H⋯S hydrogen bonds. The mol-ecules of (VI) are linked into sheets by a combination of N-H⋯S, N-H⋯N and C-H⋯π(arene) hydrogen bonds. Comparisons are made with the structures of some related compounds.
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Affiliation(s)
- Mohammed A. E. Shaibah
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru-570 006, India
| | - Hemmige S. Yathirajan
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru-570 006, India
| | - Asma
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Mangalore-574 199, India
| | - Nagaraja Manju
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Mangalore-574 199, India
| | - Balakrishna Kalluraya
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Mangalore-574 199, India
| | - Ravindranath S. Rathore
- Department of Bioinformatics, School of Earth, Biological and Environmental Sciences, Central University of South Bihar, Gaya-824236, India
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