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Synthesis of tetrazole derivatives through conversion of amide and thioamide functionalities. Chem Heterocycl Compd (N Y) 2022. [DOI: 10.1007/s10593-022-03059-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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2
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Tiwari VK. Development of Diverse Range of Biologically Relevant Carbohydrate-Containing Molecules: Twenty Years of Our Journey*. CHEM REC 2021; 21:3029-3048. [PMID: 34047444 DOI: 10.1002/tcr.202100058] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/02/2021] [Indexed: 11/12/2022]
Abstract
There is an increasing demand for significant amount of carbohydrate-containing molecules owing to their complete chemical, biological, and pharmacological investigations to better understand their role in many important biological events. Clinical studies of a wide range of simple carbohydrates or their derivatives, glycohybrids, glycoconjugates, and neoglycoconjugates have been conducted worldwide for the successful treatment of various frontline diseases. Herein, a brief perspective of carbohydrate-based molecular scaffolding and my experience during the last 20 years in the area of synthetic carbohydrate chemistry, mainly for their impact in drug discovery & development, is presented.
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Affiliation(s)
- Vinod K Tiwari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, U.P.-221005, India
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3
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Nieto-Domínguez M, Fernández de Toro B, de Eugenio LI, Santana AG, Bejarano-Muñoz L, Armstrong Z, Méndez-Líter JA, Asensio JL, Prieto A, Withers SG, Cañada FJ, Martínez MJ. Thioglycoligase derived from fungal GH3 β-xylosidase is a multi-glycoligase with broad acceptor tolerance. Nat Commun 2020; 11:4864. [PMID: 32978392 PMCID: PMC7519651 DOI: 10.1038/s41467-020-18667-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 09/02/2020] [Indexed: 11/09/2022] Open
Abstract
The synthesis of customized glycoconjugates constitutes a major goal for biocatalysis. To this end, engineered glycosidases have received great attention and, among them, thioglycoligases have proved useful to connect carbohydrates to non-sugar acceptors. However, hitherto the scope of these biocatalysts was considered limited to strong nucleophilic acceptors. Based on the particularities of the GH3 glycosidase family active site, we hypothesized that converting a suitable member into a thioglycoligase could boost the acceptor range. Herein we show the engineering of an acidophilic fungal β-xylosidase into a thioglycoligase with broad acceptor promiscuity. The mutant enzyme displays the ability to form O-, N-, S- and Se- glycosides together with sugar esters and phosphoesters with conversion yields from moderate to high. Analyses also indicate that the pKa of the target compound was the main factor to determine its suitability as glycosylation acceptor. These results expand on the glycoconjugate portfolio attainable through biocatalysis.
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Affiliation(s)
- Manuel Nieto-Domínguez
- Biotechnology for Lignocellulosic Biomass Group, Centro de Investigaciones Biológicas Margarita Salas (CSIC), C/Ramiro de Maeztu 9, 28040, Madrid, Spain.
| | - Beatriz Fernández de Toro
- NMR and Molecular Recognition Group, Centro de Investigaciones Biológicas Margarita Salas (CSIC), C/Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Laura I de Eugenio
- Biotechnology for Lignocellulosic Biomass Group, Centro de Investigaciones Biológicas Margarita Salas (CSIC), C/Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Andrés G Santana
- Glycochemistry and Molecular recognition group, Instituto de Química Orgánica General (CSIC), C/Juan de la Cierva, 3, 28006, Madrid, Spain
| | - Lara Bejarano-Muñoz
- Biotechnology for Lignocellulosic Biomass Group, Centro de Investigaciones Biológicas Margarita Salas (CSIC), C/Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Zach Armstrong
- Department of Chemistry, Centre for High-Throughput Biology, University of British Columbia, Vancouver, Canada
| | - Juan Antonio Méndez-Líter
- Biotechnology for Lignocellulosic Biomass Group, Centro de Investigaciones Biológicas Margarita Salas (CSIC), C/Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Juan Luis Asensio
- Glycochemistry and Molecular recognition group, Instituto de Química Orgánica General (CSIC), C/Juan de la Cierva, 3, 28006, Madrid, Spain
| | - Alicia Prieto
- Biotechnology for Lignocellulosic Biomass Group, Centro de Investigaciones Biológicas Margarita Salas (CSIC), C/Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Stephen G Withers
- Department of Chemistry, Centre for High-Throughput Biology, University of British Columbia, Vancouver, Canada
| | - Francisco Javier Cañada
- NMR and Molecular Recognition Group, Centro de Investigaciones Biológicas Margarita Salas (CSIC), C/Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - María Jesús Martínez
- Biotechnology for Lignocellulosic Biomass Group, Centro de Investigaciones Biológicas Margarita Salas (CSIC), C/Ramiro de Maeztu 9, 28040, Madrid, Spain.
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Li LL, Gao LX, Han FS. A straightforward synthesis of alkyl 1H-tetrazol-5-yl thioethers via a one-pot reaction of aldehydes and 1H-tetrazole-5-thiols mediated by N-tosylhydrazones. RSC Adv 2015. [DOI: 10.1039/c5ra04050g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A method for the straightforward synthesis of alkyl 1H-tetrazol-5-yl thioethers from aldehydes and 1H-tetrazole-5-thiols through a one-pot procedure is presented.
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Affiliation(s)
- Le-Le Li
- Key Lab of Synthetic Rubber
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Lian-Xun Gao
- Key Lab of Synthetic Rubber
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Fu-She Han
- Key Lab of Synthetic Rubber
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
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Kumar D, Singh AS, Tiwari VK. An unprecedented deoxygenation protocol of benzylic alcohols using bis(1-benzotriazolyl)methanethione. RSC Adv 2015. [DOI: 10.1039/c5ra01545f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new method of silane or Bu3SnH promoted radical deoxygenation of benzylic alcohols using bis(1-benzotriazolyl)methanethione has been developed.
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Affiliation(s)
- Dhananjay Kumar
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi
- India
| | - Anoop S. Singh
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi
- India
| | - Vinod K. Tiwari
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi
- India
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Kumar D, Mishra BB, Tiwari VK. Synthesis of 2-N/S/C-Substituted Benzothiazoles via Intramolecular Cyclative Cleavage of Benzotriazole Ring. J Org Chem 2013; 79:251-66. [DOI: 10.1021/jo4024107] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dhananjay Kumar
- Department of Chemistry,
Center of Advanced Study, Faculty of Science, Banaras Hindu University, Varanasi-221005, India
| | - Bhuwan B. Mishra
- Department of Chemistry,
Center of Advanced Study, Faculty of Science, Banaras Hindu University, Varanasi-221005, India
| | - Vinod K. Tiwari
- Department of Chemistry,
Center of Advanced Study, Faculty of Science, Banaras Hindu University, Varanasi-221005, India
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Kumar D, Mishra A, Mishra BB, Bhattacharya S, Tiwari VK. Synthesis of Glycoconjugate Benzothiazoles via Cleavage of Benzotriazole Ring. J Org Chem 2013; 78:899-909. [DOI: 10.1021/jo3021049] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dhananjay Kumar
- Department of Chemistry, Centre of
Advanced Study, Banaras Hindu University, Varanasi-221005, India
| | - Amrita Mishra
- Department of Chemistry, Centre of
Advanced Study, Banaras Hindu University, Varanasi-221005, India
| | - Bhuwan B. Mishra
- Department of Chemistry, Centre of
Advanced Study, Banaras Hindu University, Varanasi-221005, India
| | - Subrato Bhattacharya
- Department of Chemistry, Centre of
Advanced Study, Banaras Hindu University, Varanasi-221005, India
| | - Vinod K. Tiwari
- Department of Chemistry, Centre of
Advanced Study, Banaras Hindu University, Varanasi-221005, India
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Abdou IM, Rateb NM, Eldeab HA. Fast and efficient microwave synthetic methods for some new 2(1H)-pyridone arabinosides. HETEROCYCL COMMUN 2012. [DOI: 10.1515/hc-2012-0091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractTwo series of novel 3-cyano-2-(2′′,3′′,4′′-tri-
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