1
|
Arora A, Kumar S, Kumar S, Singh SK, Dua A, Singh BK. Natural product inspired diastereoselective synthesis of sugar-derived pyrano[3,2-c]quinolones and their in-silico studies. Carbohydr Res 2024; 539:109105. [PMID: 38583285 DOI: 10.1016/j.carres.2024.109105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 04/02/2024] [Accepted: 04/02/2024] [Indexed: 04/09/2024]
Abstract
Herein, we report the development of a diastereoselective and efficient route to construct sugar-derived pyrano[3,2-c]quinolones utilizing 1-C-formyl glycal and 4-hydroxy quinolone annulation. This methodology will open a route to synthesize nature inspired pyrano[3,2-c]quinolones. This is the first report for the stereoselective synthesis of sugar-derived pyrano[3,2-c]quinolones, where 100% stereoselectivity was observed. A total of sixteen compounds have been synthesized in excellent yields with 100% stereoselectivity. The molecular docking of the synthesized novel natural product analogues demonstrated their binding modes within the active site of type II topoisomerase. The results of the in-silico studies displayed more negative binding energies for the all the synthesized compounds in comparison to the natural product huajiosimuline A, indicating their affinity for the active pocket. Ten out of the sixteen novel synthesized compounds were found to have comparative or relatively more negative binding energy in comparison to the standard anti-cancer drug, doxorubicin. Additionally, the scalability and viability of this protocol was illustrated by the gram scale synthesis.
Collapse
Affiliation(s)
- Aditi Arora
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Sumit Kumar
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Sandeep Kumar
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India; Department of Chemistry, Ramjas College, University of Delhi, Delhi, 110007, India
| | - Sunil K Singh
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India; Department of Chemistry, Kirori Mal College, University of Delhi, Delhi, 110007, India
| | - Amita Dua
- Department of Chemistry, Dyal Singh College, University of Delhi, Delhi, 110007, India
| | - Brajendra K Singh
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India.
| |
Collapse
|
2
|
Shankar B, Singh T, Kumar B, Arora A, Kumar S, Singh BK. Solvent-free synthesis and in-silico molecular docking study of ( E)-3-(β- C-glycosylmethylidene)- N-aryl/alkyl succinimides. Org Biomol Chem 2023; 21:9398-9409. [PMID: 37982163 DOI: 10.1039/d3ob01252b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Abstract
Globally, human papillomavirus (HPV) infection is the leading cause of mortality associated with cervical cancer, oral cancer (oropharyngeal), and head and neck squamous cell carcinoma (HNSCC). It is essential to explore anti-cancer drugs against life-threatening HPV infections. Aiming to search for potentially better anticancer agents, a small library of β-C-glycosylated methylidene succinimides have been synthesized under bulk and mechanical grinding conditions using the Wittig olefination reaction. Thus, the reaction of different 2,3,4,6-tetra-O-benzyl-C-glycosyl aldehydes with N-aryl/alkyl maleimides in the presence of PPh3 at 25 °C under bulk and mechanical grinding conditions results in the formation of stereochemically defined (E)-3-(2,3,4,6-tetra-O-benzyl-C-glycosylmethylidene)-N-alkyl/phenyl succinimides, which upon debenzylation with 1 M BCl3 in DCM at -78 °C lead to the synthesis of (E)-3-(C-glycosylmethylidene)-N-alkyl/phenyl succinimides in good to excellent yields. The developed methodology is efficient and environmentally benign because there is no use of organic solvents, and the products are obtained in a stereochemically defined form and in high yields. The aqueous solubility of all synthesized β-C-glycosylated methylidene succinimides makes them potential candidates for the evaluation of their different biological activities. In the present work, the synthesized glycosylated alkylidine succinimides were subjected to an in-silico molecular docking study against the E6 oncoprotein of high-risk type HPV16, which is responsible for the inactivation of the tumor suppressor p53 protein. Analysis of the molecular docking data revealed that the synthesized compounds are effective inhibitors of HPV infection, which is the cause of oral, head and neck, and cervical cancer. In comparison with the positive control 5-FU, an anti-cancer drug used in chemotherapy, more than fifteen compounds were found to be better E6 protein inhibitors.
Collapse
Affiliation(s)
- Bhawani Shankar
- Department of Chemistry, Deshbandhu College, University of Delhi, Delhi-110019, India.
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India
| | - Tejveer Singh
- Department of Zoology, Hansraj College, University of Delhi, Delhi-110007, India
| | - Banty Kumar
- Department of Chemistry, Rajdhani College, University of Delhi, Delhi-110015, India
| | - Aditi Arora
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India
| | - Sumit Kumar
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India
| | - Brajendra K Singh
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India
| |
Collapse
|
3
|
Shankar B, Kumar B, Kumar S, Arora A, Kavita, Tomar R, Singh BK. Efficient synthesis of glycosylated imidazo[1,2-a]pyridines via solvent catalysed Groebke-Blackburn-Bienayme reaction. Carbohydr Res 2023; 534:108974. [PMID: 37922684 DOI: 10.1016/j.carres.2023.108974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 09/13/2023] [Accepted: 10/10/2023] [Indexed: 11/07/2023]
Abstract
A solvent catalysed and metal catalyst-free Groebke-Blackburn-Bienayame three component reaction (GBB-3CR) has been developed for the synthesis of 2-(β-D-glycal-1-yl)-3-N-alkylamino-1-azaindolizines and 2-alkyl/aryl/heteroaryl-3-N-alkylamino-1-azaindolizines. The modified GBB reaction protocol is highly efficient, versatile, atom economic and has been performed in hexafluoroisopropanol (HFIP) without any added catalyst. The GBB-3CR showed high tolerance for a large no of substrates in term of aldehydes, differently substituted 2-aminopyridines and isocyanides without being affected by the presence of electron donating and electron withdrawing substituents at either aldehydes or 2-aminopyridines.
Collapse
Affiliation(s)
- Bhawani Shankar
- Department of Chemistry, Deshbandhu College, University of Delhi, Delhi, 110019, India; Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India.
| | - Banty Kumar
- Department of Chemistry, Rajdhani College, University of Delhi, Delhi, 110015, India
| | - Sumit Kumar
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Aditi Arora
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Kavita
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Rashmi Tomar
- Department of Chemistry, M.S.J. College, Bharatpur, Rajasthan, 321001, India
| | - Brajendra K Singh
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| |
Collapse
|
4
|
Kumar S, Sahu RK, Kumari P, Maity J, Kumar B, Chhatwal RJ, Singh BK, Prasad AK. Efficient and stereoselective synthesis of sugar fused pyrano[3,2- c]pyranones as anticancer agents. RSC Adv 2023; 13:24604-24616. [PMID: 37601594 PMCID: PMC10436030 DOI: 10.1039/d3ra02371k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 07/19/2023] [Indexed: 08/22/2023] Open
Abstract
A highly stereoselective, efficient and facile route was achieved for the synthesis of novel and biochemically potent sugar fused pyrano[3,2-c]pyranone derivatives starting from inexpensive, naturally occurring d-galactose and d-glucose. First, β-C-glycopyranosyl aldehydes were synthesized from these d-hexose sugars in six steps, with overall yields 41-55%. Next, two different 1-C-formyl glycals were synthesized from these β-C-glycopyranosyl aldehydes by treatment in basic conditions. The optimization of reaction conditions was carried out following reactions between 1-C-formyl galactal and 4-hydroxycoumarin. Next, 1-C-formyl galactal and 1-C-formyl glucal were treated with nine substituted 4-hydroxy coumarins at room temperature (25 °C) in ethyl acetate for ∼1-2 h in the presence of l-proline to obtain exclusively single diastereomers of pyrano[3,2-c]pyranone derivatives in excellent yields. Four compounds were found to be active for the MCF-7 cancer cell line. The MTT assay, apoptosis assay and migration analysis showed significant death of the cancer cells induced by the synthesized compounds.
Collapse
Affiliation(s)
- Sandeep Kumar
- Bioorganic Laboratory, Department of Chemistry, University of Delhi Delhi-110007 India
- Department of Chemistry, Ramjas College, University of Delhi Delhi-110007 India
| | - Ram Krishna Sahu
- National Institute of Cancer Prevention & Research Noida Uttar Pradesh India
| | - Priti Kumari
- Bioorganic Laboratory, Department of Chemistry, University of Delhi Delhi-110007 India
| | - Jyotirmoy Maity
- Department of Chemistry, St. Stephen College, University of Delhi Delhi-110007 India
| | - Binayak Kumar
- National Institute of Cancer Prevention & Research Noida Uttar Pradesh India
| | | | - Brajendra K Singh
- Bioorganic Laboratory, Department of Chemistry, University of Delhi Delhi-110007 India
| | - Ashok K Prasad
- Bioorganic Laboratory, Department of Chemistry, University of Delhi Delhi-110007 India
| |
Collapse
|
5
|
Kumar S, Khatri V, Mangla P, Chhatwal RJ, Parmar VS, Prasad AK. C-Glycopyranosyl aldehydes: emerging chiral synthons in organic synthesis. RSC Adv 2023; 13:19898-19954. [PMID: 37404320 PMCID: PMC10316784 DOI: 10.1039/d3ra02122j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 05/16/2023] [Indexed: 07/06/2023] Open
Abstract
Herein, we have summarized the vast array of synthetic processes that have been developed for the synthesis of C-glycopyranosyl aldehydes and diverse C-glycoconjugates derived from them by covering the literature reported from 1979 to 2023. Notwithstanding its challenging chemistry, C-glycosides are considered stable pharmacophores and are used as important bioactive molecules. The discussed synthetic methodologies to access C-glycopyranosyl aldehydes take advantage of seven key intermediates, viz. allene, thiazole, dithiane, cyanide, alkene, and nitromethane. Furthermore, the integration of complex C-glycoconjugates derived from varied C-glycopyranosyl aldehydes involves nucleophilic addition/substitution, reduction, condensation, oxidation, cyclo condensation, coupling, and Wittig reactions. In this review, we have categorized the synthesis of C-glycopyranosyl aldehydes and C-glycoconjugates on the basis of the methodology used for their synthesis and on types of C-glycoconjugates, respectively.
Collapse
Affiliation(s)
- Sandeep Kumar
- Bioorganic Laboratory, Department of Chemistry, University of Delhi Delhi India
| | - Vinod Khatri
- Bioorganic Laboratory, Department of Chemistry, University of Delhi Delhi India
- T. D. L. Govt College for Women Murthal-131027 Haryana India
| | - Priyanka Mangla
- Bioorganic Laboratory, Department of Chemistry, University of Delhi Delhi India
| | | | - Virinder S Parmar
- Bioorganic Laboratory, Department of Chemistry, University of Delhi Delhi India
- The City University of New York-Medgar Evers College, Department of Chemistry and Environmental Science USA
- Nanoscience Program, CUNY-Graduate Center and City College, Departments of Chemistry and Biochemistry USA
- Institute of Click Chemistry Research and Studies, Amity University Noida 201303 India
| | - Ashok K Prasad
- Bioorganic Laboratory, Department of Chemistry, University of Delhi Delhi India
| |
Collapse
|
6
|
Verma V, Singh A, Tyagi P, Kumar V, Prasad AK. Synthesis of 1,2,3‐Triazole‐Linked Hexopyranosylpyrimidine Nucleosides and Their Application as Hepatitis B Viral DNA, HBsAg and HBeAg Suppressants. ChemistrySelect 2023. [DOI: 10.1002/slct.202204982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
|
7
|
Mohan B, Xing T, Kumar S, Kumar S, Ma S, Sun F, Xing D, Ren P. A chemosensing approach for the colorimetric and spectroscopic detection of Cr 3+, Cu 2+, Fe 3+, and Gd 3+ metal ions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 845:157242. [PMID: 35820525 DOI: 10.1016/j.scitotenv.2022.157242] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 06/13/2022] [Accepted: 07/05/2022] [Indexed: 06/15/2023]
Abstract
Metal cations are present in domestic and industrial wastewater and have adverse effects on human and aqueous life. The present study describes the development of the molecular probe 9-anthracen-9-ylmethylene)hydrazineylidene)methyl)-2,3,6,7-tetrahydro-1H,5H-pyrido[3,2,1-ij]quinolin-8-ol (AMHMPQ) to detect Cr3+, Cu2+, Fe3+, and Gd3+ ions by using UV-visible, fluorescence, colorimetric and excitation-emission matrix (EEM) spectroscopy techniques. The interaction of Cr3+, Cu2+, Fe3+, and Gd3+ can be observed by the absorption maxima shift, turn-off, colour changes, and EEM shifts. In addition, fluorescence limits of detection 17.66 × 10-6 M, 6.44 × 10-9 M, 28.87 × 10-8 M, and 12.49 × 10-6 M in wide linear ranges, low limits of quantifications, high values of Stern-Volmer constant, Job's plot and Benesi-Hildebrand plot justify the 1:1 association affinity with association constants of 1.46 × 104 M-1, 1.86 × 107 M-1, 2.69 × 105 M-1, 2.13 × 104 M-1 for AMHMPQ-metal ions (Cr3+, Cu2+, Fe3+, and Gd3+ ions), respectively. Paper- and mask-based kits are developed to explore the utility of the designed chemosensor. Additionally, AMHMPQ acts as a reusable sensor for two, seven, two, and zero cycles for Cr3+, Cu2+, Fe3+, and Gd3+ ions, respectively, when checked with EDTA.
Collapse
Affiliation(s)
- Brij Mohan
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Tiantian Xing
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Sandeep Kumar
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Suresh Kumar
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, India
| | - Shixuan Ma
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Feiyun Sun
- School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Dingyu Xing
- School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
| | - Peng Ren
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
| |
Collapse
|
8
|
Verma V, Maity J, Maikhuri VK, Sharma R, Ganguly HK, Prasad AK. Double-headed nucleosides: Synthesis and applications. Beilstein J Org Chem 2021; 17:1392-1439. [PMID: 34194579 PMCID: PMC8204177 DOI: 10.3762/bjoc.17.98] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 05/27/2021] [Indexed: 12/19/2022] Open
Abstract
Double-headed nucleoside monomers have immense applications for studying secondary nucleic acid structures. They are also well-known as antimicrobial agents. This review article accounts for the synthetic methodologies and the biological applications of double-headed nucleosides.
Collapse
Affiliation(s)
- Vineet Verma
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110 007, India
| | - Jyotirmoy Maity
- Department of Chemistry, St. Stephen’s College, University of Delhi, Delhi-110 007, India
| | - Vipin K Maikhuri
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110 007, India
| | - Ritika Sharma
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110 007, India
| | - Himal K Ganguly
- Department of Biophysics, Bose Institute, P1/12 CIT Scheme VIIM, Kolkata-700 054, India
| | - Ashok K Prasad
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110 007, India
| |
Collapse
|
9
|
Shankar B, Khatri V, Kumar B, Maikhuri VK, Kumar A, Tomar R, Prasad AK. Synthesis and Structural Characterization of 1-( E-1-Arylpropenon-3-yl)-3,4,6-tri- O-benzyl-d-glucals and Their Transformation into Pentasubstituted (2 R,3 S,4 R)-Chromanes via Pd-Catalyzed Cross Dehydrogenative Coupling Reaction. ACS OMEGA 2021; 6:11248-11259. [PMID: 34056280 PMCID: PMC8153922 DOI: 10.1021/acsomega.1c00103] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
We have developed an efficient methodology for the synthesis of (2R,3S,4R)-2-hydroxymethyl-3,4-dihydroxy-6-aryl-7-aroylchromanes in which the chirality at the C-2, C-3, and C-4 positions is being drawn from C-glucopyranosyl aldehyde, which in turn can be efficiently synthesized from d-glucose. Thus, the synthesis starts with the transformation of sugar aldehyde into 1-(E-1-arylpropenon-3-yl)-3,4,6-tri-O-benzyl-d-glucals using Claisen-Schmidt type condensation reaction with different acetophenones and then to 1,2-disubstituted glucals via Pd(II)-catalyzed cross dehydrogenative coupling reaction, which in turn has been efficiently converted into (2R,3S,4R)-chromanes via 6π-electrocyclization and in situ dehydrogenative aromatization.
Collapse
Affiliation(s)
- Bhawani Shankar
- Bioorganic
Laboratory, Department of Chemistry, University
of Delhi, Delhi 110007, India
- Department
of Chemistry, Deshbandhu College, University
of Delhi, Delhi 110019, India
| | - Vinod Khatri
- Bioorganic
Laboratory, Department of Chemistry, University
of Delhi, Delhi 110007, India
| | - Banty Kumar
- Bioorganic
Laboratory, Department of Chemistry, University
of Delhi, Delhi 110007, India
| | - Vipin K. Maikhuri
- Bioorganic
Laboratory, Department of Chemistry, University
of Delhi, Delhi 110007, India
| | - Amit Kumar
- Bioorganic
Laboratory, Department of Chemistry, University
of Delhi, Delhi 110007, India
| | - Rashmi Tomar
- Bioorganic
Laboratory, Department of Chemistry, University
of Delhi, Delhi 110007, India
| | - Ashok K. Prasad
- Bioorganic
Laboratory, Department of Chemistry, University
of Delhi, Delhi 110007, India
| |
Collapse
|
10
|
Kumar B, Maity J, Shankar B, Kumar S, Kavita, Prasad AK. Synthesis of d-glycopyranosyl depsipeptides using Passerini reaction. Carbohydr Res 2021; 500:108236. [PMID: 33516073 DOI: 10.1016/j.carres.2021.108236] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 12/31/2020] [Accepted: 01/04/2021] [Indexed: 11/16/2022]
Abstract
A protocol based on Passerini multi-component reaction has been developed for facile, efficient and atom economical synthesis of a small library of twenty potential bioactive (2R)-2-(d-glycopyranosyl)-2-acyloxyacetamides using perbenzylated d-glycopyranosyl aldehydes, substituted isocyanides and different aliphatic/aromatic carboxylic acids. All twenty synthesized d-glycopyranosyl α-acyloxy amides, commonly known as depsipeptides were unambiguously identified on the basis of their spectral (IR, 1H, 13C NMR, COSY, HSQC, NOESY and HRMS) data analysis.
Collapse
Affiliation(s)
- Banty Kumar
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India; Department of Chemistry, Rajdhani College, University of Delhi, Delhi, 110015, India
| | - Jyotirmoy Maity
- Department of Chemistry, St. Stephen's College, University of Delhi, Delhi, 110007, India
| | - Bhawani Shankar
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India; Department of Chemistry, Deshbandhu College, University of Delhi, Delhi, 110019, India
| | - Sandeep Kumar
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Kavita
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Ashok K Prasad
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India.
| |
Collapse
|
11
|
Verma V, Maikhuri VK, Khatri V, Singh A, Prasad AK. Synthesis of hexopyranosyl pyrimidine homonucleosides. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1836224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Vineet Verma
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Vipin K. Maikhuri
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Vinod Khatri
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, India
- Department of Chemistry, Pt. Neki Ram Sharma Govt. College, Rohtak, India
| | - Ankita Singh
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Ashok K. Prasad
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| |
Collapse
|
12
|
Kumar B, Shankar B, Kumar S, Maity J, Prasad AK. Multicomponent one pot synthesis of C-glucosides of 1-azaindolizines. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1786586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Banty Kumar
- Department of Chemistry, University of Delhi, Delhi, India
- Department of Chemistry, Rajdhani College, University of Delhi, Delhi, India
| | | | - Sandeep Kumar
- Department of Chemistry, University of Delhi, Delhi, India
| | - Jyotirmoy Maity
- Department of Chemistry, St. Stephen’s College, University of Delhi, Delhi, India
| | | |
Collapse
|
13
|
Singh A, Maikhuri VK, Verma V, Chhatwal RJ, Sharma D, Prasad AK. Synthesis and carboxylate anion binding studies on cyclic sugar-amino acid hybrids. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1785502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Ankita Singh
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Vipin K. Maikhuri
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Vineet Verma
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | | | - Deepti Sharma
- Sri Venkateswara College, University of Delhi, Delhi, India
| | - Ashok K. Prasad
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| |
Collapse
|
14
|
Li M, Qiu YF, Wang CT, Li XS, Wei WX, Wang YZ, Bao QF, Ding YN, Shi WY, Liang YM. Visible-Light-Induced Pd-Catalyzed Radical Strategy for Constructing C-Vinyl Glycosides. Org Lett 2020; 22:6288-6293. [PMID: 32806189 DOI: 10.1021/acs.orglett.0c02053] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A novel visible-light-induced palladium-catalyzed Heck reaction for bromine sugars and aryl olefins with high regio- and stereochemistry selectivity for the preparation of C-glycosyl styrene is described. This reaction takes place in one step at room temperature by using a simple and readily available starting material. This protocol can be scaled up to a wide range of glycosyl bromide donors and aryl olefin substrates. Mechanistic studies indicate that a radical addition pathway is involved.
Collapse
Affiliation(s)
- Ming Li
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Yi-Feng Qiu
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Cui-Tian Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Xue-Song Li
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Wan-Xu Wei
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Yu-Zhao Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Qiao-Fei Bao
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Ya-Nan Ding
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Wei-Yu Shi
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| |
Collapse
|
15
|
Maikhuri VK, Khatri V, Kumar A, Singh B, Prasad AK. Synthesis of Sugar Diene and Its Pd-Catalyzed Transformation into Chromanes. J Org Chem 2020; 85:7068-7076. [PMID: 32402192 DOI: 10.1021/acs.joc.0c00432] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A route to synthesize 1,2-disubstituted glucals has been developed, which were further converted to substituted chromanes by thermal 6π-electrocyclization in HMPA followed by in situ aromatization. One of the key steps in the synthesis of chromane is metal-free generation of C1-substituted glucal from d-mannose, which was further converted to 1,2-disubstituted glucals by Pd-catalyzed Fujiwara-Moritani reaction with styrenes, acrylates, acrylamide, acrylonitrile, and ethyl vinyl ketone in good yields.
Collapse
Affiliation(s)
- Vipin K Maikhuri
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Vinod Khatri
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India.,Department of Chemistry, Pt. Neki Ram Sharma Govt. College, Rohtak 124001, India
| | - Amit Kumar
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Balram Singh
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Ashok K Prasad
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| |
Collapse
|
16
|
Khatri V, Bhatia S, Deep S, Kohli E, Haag R, Senapati NN, Prasad AK. Exploring hydrophobic diastereomeric 2,6-anhydro-glycoheptitols for their enzymatic polymerization with PEG: towards delivery applications. NEW J CHEM 2020. [DOI: 10.1039/d0nj02642e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Two sugar PEG-based amphiphilic copolymers have been synthesized by Novozym®-435-catalyzed greener solvent free transesterification reaction of diastereomeric 2,6-anhydro-glucoheptitol and 2,6-anhydro-mannoheptitol with PEG-1000 diethyl ester.
Collapse
Affiliation(s)
- Vinod Khatri
- Bioorganic Laboratory, Department of Chemistry, University of Delhi
- Delhi 110 007
- India
- Department of Chemistry, Pt. Neki Ram Sharma Government College
- Rohtak-124001
| | - Sumati Bhatia
- Institute for Chemistry and Biochemistry, Free University Berlin
- 14195 Berlin
- Germany
| | - Satyanarayan Deep
- Bioorganic Laboratory, Department of Chemistry, University of Delhi
- Delhi 110 007
- India
- DRDO, DIPAS
- Timarpur
| | | | - Rainer Haag
- Institute for Chemistry and Biochemistry, Free University Berlin
- 14195 Berlin
- Germany
| | | | - Ashok K. Prasad
- Bioorganic Laboratory, Department of Chemistry, University of Delhi
- Delhi 110 007
- India
| |
Collapse
|
17
|
Singh B, Kumar S, Maity J, Roy I, Prasad AK. Bamford-Stevens reaction assisted synthesis of styrene C-glycosides. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1606921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Balram Singh
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Sandeep Kumar
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Jyotirmoy Maity
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Indrajit Roy
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Ashok K. Prasad
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| |
Collapse
|
18
|
Thakur RK, Joshi P, Upadhyaya K, Singh K, Sharma G, Shukla SK, Tripathi R, Tripathi RP. Synthesis of isatin based N1-alkylated 3-β-C-glycoconjugated-oxopropylidene oxindoles as potent antiplasmodial agents. Eur J Med Chem 2019; 162:448-454. [DOI: 10.1016/j.ejmech.2018.11.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 11/03/2018] [Accepted: 11/05/2018] [Indexed: 02/08/2023]
|
19
|
Kaszás T, Tóth M, Langer P, Somsák L. C
‐Glycosyl Styrene Type Compounds by Pd‐Catalyzed Cross‐Coupling Reactions of Anhydro‐Aldose Tosylhydrazones with Benzyl Bromides. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801059] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Tímea Kaszás
- Department of Organic ChemistryUniversity of Debrecen, POB 400 H-4002 Debrecen Hungary
- Department of ChemistryUniversity of Rostock Albert-Einstein-Str. 3a 18059 Rostock Germany
| | - Marietta Tóth
- Department of Organic ChemistryUniversity of Debrecen, POB 400 H-4002 Debrecen Hungary
| | - Peter Langer
- Department of ChemistryUniversity of Rostock Albert-Einstein-Str. 3a 18059 Rostock Germany
| | - László Somsák
- Department of Organic ChemistryUniversity of Debrecen, POB 400 H-4002 Debrecen Hungary
| |
Collapse
|
20
|
Gu X, Fang Z. Knoevenagel Condensation between C-glycoside and Active Methylene Compounds without Catalysts. JOURNAL OF CHEMICAL RESEARCH 2016. [DOI: 10.3184/174751916x14762012580355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A Knoevenagel condensation reaction between a C-glycoside based aromatic aldehyde and cyclic active methylene compounds such as barbituric acid, thiobarbituric acid, 1,3-dimethylbarbituric acid, 5,5-dimethyl-1,3-cyclohexanedione, 2,2-dimethyl-1,3-dioxane-4,6-dione and 3-methyl-1-phenyl-2-pyrazolin-5-one has been developed, to give a series of unusual fused heterocyclic compounds. The structures of all the new compounds were established by the spectral data. This method which did not use any catalysts, has the advantages of operational simplicity and minimal environmental impact.
Collapse
Affiliation(s)
- Xiaomin Gu
- School of Chemical Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei St, Nanjing, JiangSu 210 094, P.R. China
| | - Zhijie Fang
- School of Chemical Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei St, Nanjing, JiangSu 210 094, P.R. China
| |
Collapse
|
21
|
Gu X, Fang Z. Synthesis of a small library of oximes and phenylhydrazones of phenyl ketone C-glycosides. J Carbohydr Chem 2016. [DOI: 10.1080/07328303.2016.1227830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Xiaomin Gu
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing, JS, P. R. China
| | - Zhijie Fang
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing, JS, P. R. China
| |
Collapse
|