1
|
Umaraw P, Singh VP, Verma AK. Effect of Addition of Mango Seed Extract on Storage Stability of Chevon Meatballs at Refrigeration Temperature. Foods 2024; 13:676. [PMID: 38472788 DOI: 10.3390/foods13050676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/16/2024] [Accepted: 02/18/2024] [Indexed: 03/14/2024] Open
Abstract
In this study, the addition of mango seed extract (MSE) in goat meatballs was assessed. The efficacy of three different levels of MSE extract, namely T1 = (2.5 mL/100 g of meat emulsion v/w), T2 = (5.0 mL/100 g of meat emulsion v/w), T3 = (7.5 mL/100 g of meat emulsion v/w), and T0 (control without mango seed extract), was conducted for evaluation of changes in water activity (aW), pH, total phenolic compounds, DPPH, peroxide value, TBARS, microbial quality, and sensory attributes of the goat meatballs stored at refrigerated temperature (4 ± 1 °C). Incorporation of the mango seed extract T3 (7.5 mL/100 g) showed that it can potentially better maintain change in pH and water activity. Total phenolic and DPPH activity decreased significantly (P0.05) among all samples throughout storage; however, the highest value was noted for T3 among all samples. The MSE-added goat meatballs (T3) group had lower significant (p < 0.05) peroxide values than the other samples. The T3 sample added with MSE exhibited significant (p < 0.05) lower TBRAS values as compared to other treatments. Comparatively lower microbial proliferation and better sensory attributes were maintained among the treated groups during the entire storage time. The results show that the inclusion of MSE extract T3 (7.5 mL/100 g) is a promising natural antioxidant that can maintain a better quality of goat meatballs at refrigerated temperature (4 ± 1 °C) under aerobic packaging conditions.
Collapse
Affiliation(s)
- Pramila Umaraw
- Department of Livestock Products Technology, College of Veterinary and Animal Sciences, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut 250 110, Uttar Pradesh, India
| | - Veer Pal Singh
- Department of Livestock Products Technology, College of Veterinary and Animal Sciences, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut 250 110, Uttar Pradesh, India
| | - Akhilesh K Verma
- Department of Livestock Products Technology, College of Veterinary and Animal Sciences, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut 250 110, Uttar Pradesh, India
| |
Collapse
|
2
|
Muskan, Verma AK. o-Alkynylaryl 2-Cyanoacrylates: A Synthon for the Construction of Diverse Isoquinolones/Napthyridinones. Org Lett 2024; 26:1238-1242. [PMID: 38323799 DOI: 10.1021/acs.orglett.4c00053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
o-Alkynylaryl 2-cyanoacrylates have been disclosed as a new synthon for the regioselective synthesis of isoquinolones and naphthyridinones under mild reaction conditions. The attractive feature of this investigation includes carbon-carbon double bond cleavage under metal-free conditions by an intramolecular SN2 reaction. Incorporating two distinct C-I bonds in the resulting products provides facile opportunity for structural elaboration. The viability of the present protocol was unveiled by postfunctionalization with drug analogues and gram-scale synthesis.
Collapse
Affiliation(s)
- Muskan
- Department of Chemistry, University of Delhi, Delhi-110007, India
| | - Akhilesh K Verma
- Department of Chemistry, University of Delhi, Delhi-110007, India
| |
Collapse
|
3
|
Yadav LP, Gangadhara K, Apparao VV, Yadav V, Mishra DS, Singh AK, Rane J, Kaushik P, Janani P, Kumar R, Verma AK, Kumar S, Malhotra SK, Shekhawat N. Genetic diversity, morphological traits, quality traits and antioxidants potentiality of Coccinia grandis germplasm under rainfed semi-arid region. Sci Rep 2024; 14:868. [PMID: 38195737 PMCID: PMC10776759 DOI: 10.1038/s41598-023-49091-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 12/04/2023] [Indexed: 01/11/2024] Open
Abstract
The present study was conducted to evaluate the genetic variability for morphological and qualitative traits of Coccinia for development of trait specific lines at ICAR-Central Horticultural Experiment Station (CIAH-RS), Panchmahals (Godhra), Gujarat during 2020-2022. In this study, we evaluated 26 gynoecious accessions to assess the genetic divergence through principal component and cluster analysis. The experiment was carried out in a randomized complete block design with three replications under rainfed semi-arid conditions. High values of PCV and GCV were observed for variables such as NFFP (25.13 and 22.20), PL (23.14 and 20.69), FD (24.01 and 21.46), AFW (22.98 and 20.13), NFPY (26.38 and 24.40), FYP (37.57 and 31.29), FY (35.55 and 33.20), AsC (28.65 and 27.73), Ac (24.32 and 21.06), TSS (37.23 and 35.94), DPPHL (20.71 and 20.38), FRAPL (21.08 and 20.92), TPF(20.81 and 20.45) respectively. High heritability coupled with high genetic advance as per cent of mean was observed for vine length (VL), internodal length (IL), number of female flowers per plant (NFFP), fruit length (FL), peduncle length (PL), fruit diameter (FD), average fruit weight (AFW), number of fruit per plant per year (NFPY), fruit yield per plant (FYP), fruit yield (FY), ascorbic acid (AsC), acidity (Ac), total soluble solids (TSS), total phenols in leaves TPL), total flavonoids in leaves TFL, CUPRAC in leaves (CUPRACL), DPPH in leaves (DPPHL), FRAP in leaves (FRAPL), Total phenols in fruits (TPF), Total flavonoids in fruits (TFF), CUPRAC in fruits (CUPRACF) and DPPH in fruits (DPPHF). The FYP exhibited a significant positive correlation with variables like VL (0.6833), IL (0.2991), NFFP (0.8107), FD (0.5245), AFW (0.6766), NFPY (0.7659), ASC (0.4611), TSS (0.5004) and TPF (0.4281). The estimates of genetic parameters revealed scope for further improvement of fruit yield by selection. Of the eight principal components, PC-I through PC-VIII had eigen values greater than 1 and it accounts 85.02% of the total variation for 26 gynoecious accessions of Ivy gourd. The eigen values of PC-I comprised 5.775% of total variation followed by PC-II (4.250%), PC-III (3.175%), PC-IV (2.588%), PC-V (1.828%), PC-VI (1.447%), PC-VII (1.179%) and PC-VIII (1.013%).The cluster VI and cluster I having highest mean values for most of traits under study. Thus, genotypes from the distinct cluster like cluster VI and I for should be used for selection of parents and varietal improvement for further breeding programme in ivy gourd.
Collapse
Affiliation(s)
- Lalu Prasad Yadav
- ICAR-Central Horicultulal Experiment Station (CIAH RS), Godhra, 389340, Gujarat, India.
| | - K Gangadhara
- ICAR-Central Horicultulal Experiment Station (CIAH RS), Godhra, 389340, Gujarat, India
| | - V V Apparao
- ICAR-Central Horicultulal Experiment Station (CIAH RS), Godhra, 389340, Gujarat, India
| | - Vikas Yadav
- ICAR-Central Horicultulal Experiment Station (CIAH RS), Godhra, 389340, Gujarat, India
| | - D S Mishra
- ICAR-Central Horicultulal Experiment Station (CIAH RS), Godhra, 389340, Gujarat, India
| | - A K Singh
- ICAR-Central Horicultulal Experiment Station (CIAH RS), Godhra, 389340, Gujarat, India
| | - Jagdish Rane
- ICAR-Central Institute for Arid Horticulture, Beechwal, Bikaner, 334006, Rajasthan, India
| | - Prashant Kaushik
- Chaudhary Charan Singh Haryana Agricultural University, Hisar, 125 004, Haryana, India
| | - P Janani
- ICAR-Central Potato Research Station, Shillong, 793 009, Meghalaya, India
| | - Raj Kumar
- ICAR-Central Institute for Arid Horticulture, Beechwal, Bikaner, 334006, Rajasthan, India
| | - A K Verma
- ICAR-Central Institute for Arid Horticulture, Beechwal, Bikaner, 334006, Rajasthan, India
| | - Sanjay Kumar
- Chaudhary Charan Singh Haryana Agricultural University, Hisar, 125 004, Haryana, India
| | - S K Malhotra
- ICAR-Directorate of Knowledge Management in Agriculture, Pusa, 110012, New Delhi, India
| | - Neelam Shekhawat
- ICAR-NBPGR Regional Station Jodhpur, C/o CAZRI, Jodhpur, 342003, Rajasthan, India
| |
Collapse
|
4
|
Sharma M, Singh DN, Uttam G, Sharma P, Meena SA, Verma AK, Negi RK. Adaptive evolution of Sphingopyxis sp. MC4 conferred degradation potential for persistent β- and δ-Hexachlorocyclohexane (HCH) isomers. J Hazard Mater 2024; 461:132545. [PMID: 37757562 DOI: 10.1016/j.jhazmat.2023.132545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 09/09/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023]
Abstract
Hexachlorocyclohexane (HCH), an organochlorine pesticide imposes several harmful impacts on the ecosystem. β- and δ-isomers of HCH are highly toxic, persistent, and recalcitrant to biodegradation, slow and incomplete degradation of β- and δ- isomers have been reported in a few strains. We have isolated a strain designated as Sphingopyxis strain MC4 that can tolerate and degrade high concentrations of α-, β-, γ- and δ-HCH isomers. To date, no other Sphingopyxis strain has been reported to degrade β- and δ-isomers. To understand the underlying genetic makeup contributing to adaptations, the whole genome of strain MC4 was sequenced. Comparative genome analysis showed that strain MC4 harbors the complete pathway (lin genes) required for HCH degradation. Genetic footprints such as presence of lin genes on genomic islands, IS6100 elements in close proximity of lin genes, and synteny in lin flanking regions with other strains reflects the horizontal gene transfer in strain MC4. Positive selection and HGT drive the adaptive evolution of strain MC4 under the pressure of HCH contamination that it experienced in its surrounding niche. In silico analyses showed efficient binding of β- and δ-isomers with enzymes leading to rapid degradation that need further validation by cloning and biochemical experiments.
Collapse
Affiliation(s)
- Monika Sharma
- Department of Zoology, University of Delhi, Delhi 110007, India
| | - Durgesh Narain Singh
- Department of Zoology, University of Delhi, Delhi 110007, India; BioNEST-BHU, InnoResTech Foundation, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Gunjan Uttam
- Zoology section, MMV, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Poonam Sharma
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Shivam A Meena
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Akhilesh K Verma
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Ram Krishan Negi
- Department of Zoology, University of Delhi, Delhi 110007, India.
| |
Collapse
|
5
|
Meena SA, Sharma P, Verma AK. Stereoselective synthesis of difunctionalized succinimides from aza-1,6-enynes by radical cascade reaction. Chem Commun (Camb) 2023. [PMID: 37226679 DOI: 10.1039/d3cc01391j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A transition-metal-free one-pot synthesis of di-functionalized succinimides by radical cascade seleno/thiosulfonation of aza-1,6-enynes in an atom economical manner has been developed. The developed method allows the synthesis of highly decorated succinimides under mild reaction conditions with excellent stereoselectivity. The proposed radical pathway for the reaction is well supported by the control experiments. The reaction's advantageous features are operational simplicity, atom economy, and functional group tolerance with broad substrate scope.
Collapse
Affiliation(s)
- Shivam A Meena
- Department of Chemistry, University of Delhi, Delhi, 110007, India.
| | - Poonam Sharma
- Department of Chemistry, University of Delhi, Delhi, 110007, India.
| | - Akhilesh K Verma
- Department of Chemistry, University of Delhi, Delhi, 110007, India.
- Institution of Eminence (IoE), University of Delhi, Delhi, 110007, India
| |
Collapse
|
6
|
Kumar A, Mishra PK, Verma AK. Base-mediated ynone-isocyanide [3+2] cycloaddition: a general method to 2,3,4-tri-substituted 1- H-pyrroles and bis-pyrroles. Chem Commun (Camb) 2023. [PMID: 37226554 DOI: 10.1039/d3cc01586f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A transition-metal-free and base-promoted one-pot synthesis of 2,3,4-trisubstituted 1-H-pyrroles has been developed. The reaction occurs through the [3+2] cycloaddition of differently functionalized ynones and isocyanides. The reaction's advantageous features are operational simplicity, atom economy, and functional group tolerance with broad substrate scope. In addition, 1,3-bis-pyrrole formation and gram-scale synthesis were also achieved. Furthermore, the synthetic utility of the products was also investigated via isocyanide insertion and pyrrole-triazole hybrid formation in good yield.
Collapse
Affiliation(s)
- Ankit Kumar
- Department of Chemistry, University of Delhi, Delhi 110007, India.
| | - Pawan K Mishra
- Department of Chemistry, University of Delhi, Delhi 110007, India.
| | - Akhilesh K Verma
- Department of Chemistry, University of Delhi, Delhi 110007, India.
| |
Collapse
|
7
|
Sarkar VK, De UK, Kala A, Chauhan A, Verma AK, Paul BR, Soni S, Chaudhuri P, Patra MK, Gaur GK. Effects of oral probiotic and lactoferrin interventions on iron-zinc homeostasis, oxidant/antioxidant equilibrium and diarrhoea incidence of neonatal piglets. Benef Microbes 2023:1-12. [PMID: 37026367 DOI: 10.3920/bm2022.0032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Abstract
The objective of this study was to examine the effects of early-life host specific probiotic and lactoferrin (LF) supplementations on diarrhoea incidence, iron (Fe)-zinc (Zn) balance and antioxidant capabilities in serum of neonatal piglets. A total of eight sow litters obtained from parity matched sows were randomly divided into four groups and assigned to one of the four interventions: control (2.0 ml normal saline), bovine lactoferrin (bLF) (100 mg bLF in normal saline), probiotic (Pb) (1×109 cfu of swine origin Pediococcus acidilactici FT28 strain) and bLF+Pb (both 100 mg bLF and 1×109 cfu of P. acidilactici FT28). All the piglets received supplementations once daily orally for first 7 days of life. The incidence of diarrhoea markedly decreased in bLF group compared to control group. Notably, no incidences of diarrhoea were recorded in Pb and bLF+Pb groups. The Zn and Fe concentrations were significantly increased from day 7 to 21 in bLF and on day 21 in bLF+Pb group. No such changes were noted in Pb group. Total antioxidant capacity (TAC) in serum was significantly increased on days 7 and 15 in bLF group and on days 7 and 21 in bLF+Pb group. Malonaldehyde concentration was markedly reduced from day 7 to 21 in bLF and bLF+Pb groups. The concentrations of nitrate on days 15 and 21 and malonaldehyde on day 7 were significantly higher in Pb group, but mean TAC was unaltered from day 0 to 21. Although no correlation between the incidence of diarrhoea and Zn/Fe and oxidant/antioxidant homeostasis was noted in the Pb group, the supplementation of P. acidilactici FT28 alone was sufficient to prevent the incidence of diarrhoea in neonatal piglets. Taken together, it is concluded that strategic supplementation of P. acidilactici FT28 in early life could help in preventing diarrhoea until weaning of piglets.
Collapse
Affiliation(s)
- V K Sarkar
- Division of Medicine, ICAR-Indian Veterinary Research Institute, Izatnagar 243122 (UP), India
| | - U K De
- Division of Medicine, ICAR-Indian Veterinary Research Institute, Izatnagar 243122 (UP), India
| | - A Kala
- Division of Animal Nutrition, ICAR-Indian Veterinary Research Institute, Izatnagar 243122 (UP), India
| | - A Chauhan
- Livestock Production and Management Section, ICAR-Indian Veterinary Research Institute, Izatnagar 243122 (UP), India
| | - A K Verma
- Division of Animal Nutrition, ICAR-Indian Veterinary Research Institute, Izatnagar 243122 (UP), India
| | - B R Paul
- Division of Medicine, ICAR-Indian Veterinary Research Institute, Izatnagar 243122 (UP), India
| | - S Soni
- Division of Medicine, ICAR-Indian Veterinary Research Institute, Izatnagar 243122 (UP), India
| | - P Chaudhuri
- Division of Biological Products, ICAR-Indian Veterinary Research Institute, Izatnagar 243122 (UP), India
| | - M K Patra
- Livestock Production and Management Section, ICAR-Indian Veterinary Research Institute, Izatnagar 243122 (UP), India
| | - G K Gaur
- Livestock Production and Management Section, ICAR-Indian Veterinary Research Institute, Izatnagar 243122 (UP), India
| |
Collapse
|
8
|
Kate GU, Krishnani KK, Kumar N, Sukhdhane K, Verma AK, Brahmane MP, Chadha NK, Kumar J. Abiotic and biotic stress alleviating effects of the medicinal and aromatic plant-derived product on striped catfish Pangasianodonhypophthalmus. Fish Shellfish Immunol 2023; 135:108625. [PMID: 36858327 DOI: 10.1016/j.fsi.2023.108625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 02/15/2023] [Accepted: 02/18/2023] [Indexed: 06/18/2023]
Abstract
Intensification of aquaculture production leads to abiotic and biotic stresses, which are further induced by the impact of climate change. Thus, it is important to explore a combined strategy to alleviate multiple stresses in fish. In the present investigation, the removal of nitrogenous metabolites from aquaponics water was studied using products derived from five different locally available medicinal and aromatic plants (MAPs) namely banana stem (Musa Accuminata), Aloe vera, Mint (Minata sepicata), Indian beech/Pongameoil-tree/Karanj (Pongamia pinnatum), and Coat Button/Mexican daisy/Dagadipala (Tridax procrumbens) in the batch experiment for 24 h. A reduction of 91-94% in the ammonia level and 75-80% removal of nitrite-N in the treatments with products derived from mint, banana stem, and aloe vera has been observed. Mint product was also found to be bactericidal against fish pathogenic bacteria. Based on this dual function of mint, further study was conducted under wet-lab conditions to evaluate the possible protective role of the mint-based product in dry powder form against abiotic stresses caused by nitrogenous toxicants for 24 h and 45 days multiple stresses caused by nitrogenous toxicants in freshwater stocked with eight fingerlings of Pangasianodon hypophthalmus of the initial weight of 8 ± 0.5g for 24 h and 8.82 ± 0.75g for 45 days. The results revealed that mint-derived plant product has better anti-stress properties in terms of their bioremediation effectiveness in lowering ammonia and nitrite. Mint also improved the fish growth performance with better physiological responses and anti-oxidative status and reduced the cellular metabolic stress in fish reared under ammonia, as further indicated by reduced oxidative stress parameters, and tissue biochemical indices. Overall, mint showed its main properties as a growth promoter, and immune enhancer, where this medicinal plant product acts as a bioremediation and antibacterial agent to the host immune system. This has potential applications in the environmental and health management of aquaculture.
Collapse
Affiliation(s)
- G U Kate
- ICAR-Central Institute of Fisheries Education (Deemed University), Panch Marg, Off Yari Road, Versova, Andheri (W), Mumbai, 400061, India
| | - K K Krishnani
- ICAR-Central Institute of Fisheries Education (Deemed University), Panch Marg, Off Yari Road, Versova, Andheri (W), Mumbai, 400061, India.
| | - Neeraj Kumar
- ICAR-National Institute of Abiotic Stress Management, Baramati, Pune, 413115, India.
| | - K Sukhdhane
- ICAR-Central Institute of Fisheries Education (Deemed University), Panch Marg, Off Yari Road, Versova, Andheri (W), Mumbai, 400061, India
| | - A K Verma
- ICAR-Central Institute of Fisheries Education (Deemed University), Panch Marg, Off Yari Road, Versova, Andheri (W), Mumbai, 400061, India
| | - M P Brahmane
- ICAR-Central Institute of Fisheries Education (Deemed University), Panch Marg, Off Yari Road, Versova, Andheri (W), Mumbai, 400061, India
| | - N K Chadha
- ICAR-Central Institute of Fisheries Education (Deemed University), Panch Marg, Off Yari Road, Versova, Andheri (W), Mumbai, 400061, India
| | - Jitendra Kumar
- Institute of Pesticide Formulation Technology, Sector-20, Udyog Vihar, Gurugram, 122016, India
| |
Collapse
|
9
|
Verma S, Kumar M, Verma AK. A unified approach to benzo[ c]phenanthridines via the cascade dual-annulation/formylation of 2-alkynyl/alkenylbenzonitriles. Chem Commun (Camb) 2023; 59:3723-3726. [PMID: 36891930 DOI: 10.1039/d3cc00197k] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
A base-mediated versatile cascade dual-annulation and formylation of 2-alkenyl/alkynylbenzonitriles with 2-methylbenzonitriles has been established for the construction of four different classes of amino and amido substituted benzo[c]phenanthridines and benzo[c]phenanthrolines. The synthesized molecules could be of utmost relevance in pharmaceuticals. The transformation uses the solvent DMF as the formyl source for synthesis of the amido-substituted scaffolds. This transition-metal-free unique strategy enables the formation of multiple C-C and C-N bonds in one pot at room temperature.
Collapse
Affiliation(s)
- Shalini Verma
- Department of Chemistry, University of Delhi, Delhi 110007, India.
| | - Manoj Kumar
- Department of Chemistry, University of Delhi, Delhi 110007, India.
| | - Akhilesh K Verma
- Department of Chemistry, University of Delhi, Delhi 110007, India.
| |
Collapse
|
10
|
Sushmita, Patel M, Thakur D, Verma AK. Copper iodide nanoparticles (CuI NPs): an efficient catalyst for the synthesis of alkynyl esters. Org Biomol Chem 2023; 21:2301-2306. [PMID: 36853264 DOI: 10.1039/d3ob00157a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
An environmentally benign protocol for the synthesis of alkynyl esters, by the cross-coupling of diazoacetate with various substituted alkynes under neat reaction conditions, has been described. Copper iodide nanoparticles (CuI NPs) were found to promote the Sonogashira-type coupling to afford the corresponding alkynyl esters in good yields. The CuI nanoparticles were characterized by PXRD, FESEM, EDAX, and Raman techniques. The developed methodology has several advantages such as a broad substrate scope, less reaction time, atom economy, avoidance of an additive/base/solvent, and enhanced values of green chemistry. The catalyst was recycled up to threefold without the loss of its catalytic activity.
Collapse
Affiliation(s)
- Sushmita
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India. .,Department of Chemistry, Netaji Subhas University of Technology, Dwarka Sec-3, Delhi-110078, India
| | - Monika Patel
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India.
| | - Deepika Thakur
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India.
| | - Akhilesh K Verma
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India.
| |
Collapse
|
11
|
Thakur D, Aggarwal T, Muskan, Sushmita, Verma AK. Unveiling the Three-Component Phosphonylation on Alkynylaldehydes: Toolbox toward Fluorescent Molecules. J Org Chem 2023; 88:2474-2486. [PMID: 36715609 DOI: 10.1021/acs.joc.2c02915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A regioselective tandem approach for annulated napthyridines/isoquinolines embedded with the phosphine oxide group under mild reaction conditions has been achieved in good to excellent yields. The designed strategy involves the triflate-induced formation of new C sp3-P and C sp2-N bond formation in one pot. This protocol was also well tolerated for the construction of densely functionalized organo-phosphorylated chromenes in good yields. Further, phosphino-derived sulfamethazine and sulfamethoxazole drugs were also successfully synthesized in good yields. The mechanistic studies revealed that the ionic pathway and the formation of regioselective 6-endo dig cyclized products were confirmed through X-ray crystallographic studies. Interestingly, photophysical studies of selectivity selected compounds revealed their stimulating fluorescence properties.
Collapse
Affiliation(s)
- Deepika Thakur
- Department of Chemistry, University of Delhi, Delhi110007, India
| | - Trapti Aggarwal
- Department of Chemistry, University of Delhi, Delhi110007, India
| | - Muskan
- Department of Chemistry, University of Delhi, Delhi110007, India
| | - Sushmita
- Department of Chemistry, Netaji Subhas University of Technology, Dwarka Sec-3, Delhi110078, India
| | - Akhilesh K Verma
- Department of Chemistry, University of Delhi, Delhi110007, India
| |
Collapse
|
12
|
Kumar P, Sharma N, Ahmed MA, Verma AK, Umaraw P, Mehta N, Abubakar AA, Hayat MN, Kaka U, Lee SJ, Sazili AQ. Technological interventions in improving the functionality of proteins during processing of meat analogs. Front Nutr 2022; 9:1044024. [PMID: 36601080 PMCID: PMC9807037 DOI: 10.3389/fnut.2022.1044024] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 12/02/2022] [Indexed: 12/24/2022] Open
Abstract
Meat analogs have opened a new horizon of opportunities for developing a sustainable alternative for meat and meat products. Proteins are an integral part of meat analogs and their functionalities have been extensively studied to mimic meat-like appearance and texture. Proteins have a vital role in imparting texture, nutritive value, and organoleptic attributes to meat analogs. Processing of suitable proteins from vegetable, mycoproteins, algal, and single-cell protein sources remains a challenge and several technological interventions ranging from the isolation of proteins to the processing of products are required. The present paper reviews and discusses in detail various proteins (soy proteins, wheat gluten, zein, algal proteins, mycoproteins, pulses, potato, oilseeds, pseudo-cereals, and grass) and their suitability for meat analog production. The review also discusses other associated aspects such as processing interventions that can be adapted to improve the functional and textural attributes of proteins in the processing of meat analogs (extrusion, spinning, Couette shear cell, additive manufacturing/3D printing, and freeze structuring). '.
Collapse
Affiliation(s)
- Pavan Kumar
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia (UPM), Seri Kembangan, Malaysia
- Department of Livestock Products Technology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
| | - Neelesh Sharma
- Division of Veterinary Medicine, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu, India
| | - Muideen Adewale Ahmed
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia (UPM), Seri Kembangan, Malaysia
| | - Akhilesh K. Verma
- Department of Livestock Products Technology, College of Veterinary and Animal Sciences, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, India
| | - Pramila Umaraw
- Department of Livestock Products Technology, College of Veterinary and Animal Sciences, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, India
| | - Nitin Mehta
- Department of Livestock Products Technology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
| | - Ahmed Abubakar Abubakar
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia (UPM), Seri Kembangan, Malaysia
| | - Muhammad Nizam Hayat
- Department of Animal Science, Faculty of Agriculture, Universiti Putra Malaysia, Seri Kembangan, Malaysia
| | - Ubedullah Kaka
- Department of Companion Animal Medicine and Surgery, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Seri Kembangan, Malaysia
| | - Sung-Jin Lee
- Department of Applied Animal Science, College of Animal Life Sciences, Kangwon National University, Chuncheon-si, South Korea
| | - Awis Qurni Sazili
- Department of Animal Science, Faculty of Agriculture, Universiti Putra Malaysia, Seri Kembangan, Malaysia
- Halal Products Research Institute, Putra Infoport, Universiti Putra Malaysia, Seri Kembangan, Malaysia
| |
Collapse
|
13
|
Muskan, Gangadharan A, Goel P, Patel M, Verma AK. Recent applications of nanoparticles in organic transformations. Org Biomol Chem 2022; 20:6979-6993. [PMID: 35972027 DOI: 10.1039/d2ob01114j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A variation in the size of metal nanoparticles leads to a difference in their properties. As the size of metal nanoparticles decreases, the surface area increases which leads to an increase in the reactivity of metal nanoparticles. Metals like Au, Ag, Pd, and Pt have interesting properties when used in nanometric dimensions. They function efficiently in significant industrial processes as electrocatalysts and photocatalysts in various organic reactions. Recently, the green biosynthesis of nanoparticles has attracted the attention of researchers. With environmental pollution rising over the past few decades, metal nanoparticle catalysts could be the key to subdue the toxic effects. Being versatile, they can be used to degrade pollutants, develop solar cells, convert toxic nitroaromatic compounds, significantly reduce CO2 emissions per unit of energy, and many more. Owing to their unique properties, nanoparticles have wide applications in biomedicine, for example, gold cages are promising agents for cancer diagnosis and therapy. Transition metal-oxide nanoparticles have been considered one of the best supercapacitor electrodes with high electrochemical performance. In this review, we have summarised fundamental concepts of metal nanoparticles over the last decade's main emphasis from 2010 to 2021. It focuses on the exceptional use of these nanocatalysts in various organic reactions. Additionally, we have also discussed the utility of these reactions and their crucial role in solving the problems of today. Through this article, we hope to provide the necessary framework needed to further advance the applications of metal nanoparticles as catalysts.
Collapse
Affiliation(s)
- Muskan
- Department of Chemistry, University of Delhi, Delhi-110007, India.
| | - Arya Gangadharan
- Ramjas College, Department of Chemistry, University of Delhi, Delhi-110007, India
| | - Pratiksha Goel
- Ramjas College, Department of Chemistry, University of Delhi, Delhi-110007, India
| | - Monika Patel
- Department of Chemistry, University of Delhi, Delhi-110007, India. .,Ramjas College, Department of Chemistry, University of Delhi, Delhi-110007, India
| | - Akhilesh K Verma
- Department of Chemistry, University of Delhi, Delhi-110007, India. .,Institution of Eminence, University of Delhi, Delhi-110007, India
| |
Collapse
|
14
|
Saunthwal RK, Saini KM, Grimblat N, Danodia AK, Kumar S, Gandon V, Verma AK. Expedient Access to Polyaromatic Biaryls by Unconventional Ag-Catalyzed Cycloaromatization of Alkynylthiophenes and Au-Catalyzed Double C-H Activation. Org Lett 2022; 24:5018-5022. [PMID: 35799326 DOI: 10.1021/acs.orglett.2c01665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
An unconventional approach for the regioselective synthesis of polyaromatic biaryls via site-selective Ag-catalyzed twofold electrophilic cycloisomerization followed by Au-catalyzed double C-H activation is described. The developed process allows the synthesis of highly decorated biaryls with excellent regioselectivity. As revealed by DFT computations, the reaction represents a rare example of C1-C5 endo-exo and C1-C6 endo-endo cycloaromatization. The formation of the 6-membered ring is predicted to be the fruit of an uncommon SEAr on a vinyl carbocation.
Collapse
Affiliation(s)
| | | | - Nicolas Grimblat
- Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, Institut Polytechnique de Paris, route de Saclay, 91128 Palaiseau cedex, France.,Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531 (S2002LRK), Rosario, República Argentina
| | | | - Sushil Kumar
- Department of Chemistry, University of Delhi, Delhi-110007, India
| | - Vincent Gandon
- Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, Institut Polytechnique de Paris, route de Saclay, 91128 Palaiseau cedex, France.,Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), CNRS UMR 8182, Université Paris-Saclay, Bâtiment 420, 91405 Orsay cedex, France
| | - Akhilesh K Verma
- Department of Chemistry, University of Delhi, Delhi-110007, India.,Institution of Eminence, University of Delhi, Delhi-110007, India
| |
Collapse
|
15
|
Kumar M, Verma S, Mishra V, Reiser O, Verma AK. Visible-Light-Accelerated Copper-Catalyzed [3 + 2] Cycloaddition of N-Tosylcyclopropylamines with Alkynes/Alkenes. J Org Chem 2022; 87:6263-6272. [PMID: 35476544 DOI: 10.1021/acs.joc.2c00491] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Copper-catalyzed [3 + 2] cycloadditions of N-tosylcyclopropylamine with alkynes and alkenes have been accomplished under visible light irradiation. The developed approach is compatible with a range of functionalities and allows the synthesis of diversified aminated cyclopentene and cyclopentane derivatives being relevant for drug synthesis. The protocol is operationally simple and economically affordable as it does not require any ligand, base, or additives. As the key step, the one-electron oxidation of the N-tosyl moiety by visible light-induced homolysis of a transient Cu(II)-tosylamide complex is proposed, providing a facile entry for N-centered radicals.
Collapse
Affiliation(s)
- Manoj Kumar
- Department of Chemistry, University of Delhi, Delhi 110007, India.,Institut für Organische Chemie, Universität Regensburg, Universitätsstr, 93053 Regensburg, Germany
| | - Shalini Verma
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Vivek Mishra
- Amity Institute of Click-Chemistry Research and Studies, Amity University, Noida 201313, India
| | - Oliver Reiser
- Institut für Organische Chemie, Universität Regensburg, Universitätsstr, 93053 Regensburg, Germany
| | - Akhilesh K Verma
- Department of Chemistry, University of Delhi, Delhi 110007, India
| |
Collapse
|
16
|
Verma AK, Chatli MK, Kumar P, Mehta N. Assessment of quality attributes of porcine blood and liver hydrolysates incorporated pork loaves stored under aerobic and modified atmospheric packaging. J Food Sci Technol 2022; 59:1114-1130. [PMID: 35153328 PMCID: PMC8814187 DOI: 10.1007/s13197-021-05115-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 04/09/2021] [Accepted: 04/20/2021] [Indexed: 11/28/2022]
Abstract
Lipid oxidation and microbial proliferations were studied in pork loaves prepared with incorporation of blood and liver protein hydrolysates stored in aerobic and MAP packaging for 28 and 42 days at 4 ± 1 ºC. In in-vitro trials selected levels i.e. blood hydrolysate (T1 and T3-600 mg/g), and liver hydrolysate (T2 and T4-600 mg/g), control without hydrolysate (C1-00 and C2-00 mg/g) w/w of emulsion, were added into pork loaves and packaged under aerobic (C1, T1 and T2) and MAP (C2, T3 and T4) condition. Physico-chemicals as pH, water activity, titratable acidity, lipid-oxidations, color profile, textural indices, microbial qualities and sensorial properties were analyzed. Significant (p < 0.05) lower lipid oxidation, microbial proliferations and decrease in sensory attributes were seen for tested groups and MAP than aerobic packaging. It can be concluded that pork loaves containing porcine blood and liver hydrolysates can be successfully stored upto 28th days in aerobically packed and 42 days in MAP condition at refrigerated storage with acceptable physico-chemical, oxidative stability, microbiological and sensory quality. Whereas, pork loves prepared with blood hydrolysate (T3-600 mg/g), packaged under MAP condition were superior for all studied attributes than other groups. Blood and liver hydrolysate might be used as an alternative to synthetic preservative for meat preservation.
Collapse
Affiliation(s)
- Akhilesh K. Verma
- Department of Livestock Products Technology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab 141004 India ,Department of Livestock Products Technology, College of Veterinary and Animal Sciences, Sardar Vallabhbhai Patel University of Agriculture and Technology, 250110, Meerut, Uttar Pradesh India
| | - Manish Kumar Chatli
- Department of Livestock Products Technology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab 141004 India
| | - Pavan Kumar
- Department of Livestock Products Technology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab 141004 India
| | - Nitin Mehta
- Department of Livestock Products Technology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab 141004 India
| |
Collapse
|
17
|
Meena P, Singh A, patel M, Verma AK. Transition-Metal-Free Regioselective Hydroamination of Styrenes with Amino-Heteroarenes. Chem Commun (Camb) 2022; 58:8424-8427. [DOI: 10.1039/d2cc02781j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Base-mediated anti-Markovnikov hydroamination of functionally varied styrenes with amino-substituted pyridine, quinoline, pyrimidine, pyrazine, and phenanthridine with excellent regioselectivity has been described. Double hydroamination was observed chemoselectively on secondary amine leaving...
Collapse
|
18
|
Rathore S, Yadav A, Kumari S, Sharma V, Verma AK. Impact of Lockdown on Autopsy Cases in a Tertiary Medical Centre in Northern India: A Retrospective Analysis. Journal of Indian Academy of Forensic Medicine 2022; 44:31-37. [DOI: 10.5958/0974-0848.2022.00104.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
|
19
|
Kumar B, Singh VP, Pathak V, K Verma A. Effect of red plum on quality characteristics of banana milk smoothies. IJDS 2021. [DOI: 10.33785/ijds.2021.v74i06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
20
|
Sharma V, Verma AK, Sharma P, Pandey D, Sharma M. Differential proteomic profile of X- and Y- sorted Sahiwal bull semen. Res Vet Sci 2021; 144:181-189. [PMID: 34823871 DOI: 10.1016/j.rvsc.2021.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 07/30/2021] [Accepted: 11/16/2021] [Indexed: 10/19/2022]
Abstract
The identification of differential proteins between X- and Y-sperm may be useful for immunological sexing of sperm. Hence, the present study was aimed to compare the protein profile of X- and Y-sorted Sahiwal bull semen using SDS-PAGE and Liquid Chromatography coupled with Mass Spectrometry (Nano LC-MS). Semen sample (n = 6) were categorized into three groups i.e., group I (X-sorted), group II (Y-sorted) and control group (both X- and Y- sperms). SDS PAGE revealed specific proteins of molecular weight between 18 and 24 kDa and between 30 and 37 kDa were present in X-sorted sperms. Also, band corresponding to 25 kDa was specific to Y-sorted sperms. Data obtained from Nano LC/MS is analysed by search engine database i.e., MASCOT and SEQUEST HT. Total, 241 proteins were identified, out of which 113 were differentially expressed between X- and Y-sorted sperms, in which 54 proteins showed at least two unique peptides. Out of 54 proteins, 27 were upregulated in X-sorted sample, 3 were upregulated in Y-sorted sample and 24 were differentially downregulated. Highly upregulated protein in X-sperm viz. Armadillo repeat containing 12 protein, NDC1 transmembrane nucleoporin, β-nerve growth factor, C-type natriuretic peptide, Nucleobindin-2, Phosphoglycerate mutase 2, Calmodulin along with one uncharacterised protein having accession number F1MN9 may have potential to be used as biomarker for separating X and Y sperm.
Collapse
Affiliation(s)
- Vishaka Sharma
- Department of Veterinary Gynaecology and Obstetrics, College of Veterinary and Animal Sciences, G B Pant University of Agri. & Tech., Pantnagar 263145, Uttarakhand, India
| | - A K Verma
- Department of Biochemistry, College of Basic Sciences and Humanities, G B Pant University of Agri. & Tech., Pantnagar 263145, Uttarakhand, India
| | - Prachi Sharma
- Department of Veterinary Gynaecology and Obstetrics, College of Veterinary and Animal Sciences, G B Pant University of Agri. & Tech., Pantnagar 263145, Uttarakhand, India
| | - Dinesh Pandey
- MBGE, College of Basic Sciences and Humanities, G B Pant University of Agri. & Tech., Pantnagar 263145, Uttarakhand, India
| | - Mridula Sharma
- Department of Veterinary Gynaecology and Obstetrics, College of Veterinary and Animal Sciences, G B Pant University of Agri. & Tech., Pantnagar 263145, Uttarakhand, India.
| |
Collapse
|
21
|
Affiliation(s)
- Sushmita
- Synthetic Organic Chemistry Research Laboratory Department of Chemistry University of Delhi Delhi 110007 India
| | - Trapti Aggarwal
- Synthetic Organic Chemistry Research Laboratory Department of Chemistry University of Delhi Delhi 110007 India
| | - Kapil Mohan Saini
- Synthetic Organic Chemistry Research Laboratory Department of Chemistry University of Delhi Delhi 110007 India
| | - Akhilesh K. Verma
- Synthetic Organic Chemistry Research Laboratory Department of Chemistry University of Delhi Delhi 110007 India
| |
Collapse
|
22
|
Saini KM, Saunthwal RK, Kumar A, Verma AK. Tandem 6π-Azatriene Electrocyclization of Fused Amino-cyclopentenones: Synthesis of Functionalized Pyrrolo- and Indolo-quinoxalines. Org Lett 2021; 23:7586-7591. [PMID: 34543027 DOI: 10.1021/acs.orglett.1c02782] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A tandem 6π-azacyclization approach for the synthesis of diversified pyrrolo/indolo[1,2-a]quinoxalines from amino-cyclopentenones has been developed. The reaction proceeds through a trifluoroacetic-acid-mediated 6π-electrocyclization and concomitant opening of the cyclopentenone ring. The advantageous features of the developed chemistry include transition-metal-free conditions, operational simplicity, and a broad substrate scope. Further X-ray crystallographic studies confirm the assigned structures of the fused heterocycles.
Collapse
Affiliation(s)
- Kapil Mohan Saini
- Kalindi College, Department of Chemistry, University of Delhi, Delhi 110008, India
| | - Rakesh K Saunthwal
- Department of Chemistry, University of Illinois at Urbana-Champaign, Champaign 61801, United States
| | - Ankit Kumar
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Akhilesh K Verma
- Department of Chemistry, University of Delhi, Delhi 110007, India
| |
Collapse
|
23
|
Affiliation(s)
- Shiv Kumar
- Synthetic Organic Chemistry Research Laboratory Department of Chemistry University of Delhi 110007 Delhi India
| | - Monika Patel
- Ramjas College Department of Chemistry University of Delhi 110007 Delhi India
| | - Akhilesh K. Verma
- Synthetic Organic Chemistry Research Laboratory Department of Chemistry University of Delhi 110007 Delhi India
| |
Collapse
|
24
|
Mittal A, Verma S, Natanasabapathi G, Kumar P, Verma AK. Diacetylene-Based Colorimetric Radiation Sensors for the Detection and Measurement of γ Radiation during Blood Irradiation. ACS Omega 2021; 6:9482-9491. [PMID: 33869928 PMCID: PMC8047693 DOI: 10.1021/acsomega.0c06184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Accepted: 03/01/2021] [Indexed: 05/05/2023]
Abstract
Blood and its cellular components are irradiated by ionizing radiation before transfusion to prevent the proliferation of viable T lymphocytes which cause transfusion associated-graft versus host disease. The immunodeficient patients undergoing chemotherapy for various malignancies are at risk of this disease. The international guidelines for blood transfusion recommend a minimum radiation exposure of 25 Gray (Gy) to the midplane of the blood bag, while a minimum dose of 15 Gy and a maximum dose of 50 Gy should be given to each portion of the blood bag. Therefore, precise dosimetry of the blood irradiator is essential to ensure the adequate irradiation of the blood components. The paper presents the fabrication of diacetylene-based colorimetric film dosimeters for the verification of irradiated doses. The diacetylene analogues are synthesized by tailoring them with different amide-based headgroups followed by their coating to develop colorimetric film dosimeters. Among all the synthesized diacetylene analogues, aminofluorene-substituted diacetylene exhibits the most significant color transition from white to blue color at a minimum γ radiation dose of 5 Gy. The quantitative study of color change is performed by the digitization of the scanned images of film dosimeters. The digital image processing of the developed film dosimeters facilitates rapid dose measurement which enables their facile implementation and promising application in routine blood irradiator dosimetry.
Collapse
Affiliation(s)
- Apoorva Mittal
- Department
of Medical Physics, Dr. B. R. A. Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Shalini Verma
- Department
of Chemistry, University of Delhi, Delhi 110007, India
| | - Gopishankar Natanasabapathi
- Department
of Radiotherapy, Dr. B. R. A. Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Pratik Kumar
- Department
of Medical Physics, Dr. B. R. A. Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi 110029, India
| | | |
Collapse
|
25
|
Kumar A, Mishra PK, Saini KM, Verma AK. Base‐Promoted Synthesis of Polysubstituted 4‐Aminoquinolines from Ynones and 2‐Aminobenzonitriles under Transition‐Metal‐Free Conditions. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Ankit Kumar
- Department of Chemistry University of Delhi Delhi 110007 India
| | - Pawan K. Mishra
- Department of Chemistry University of Delhi Delhi 110007 India
| | | | | |
Collapse
|
26
|
Yadav R, Lal P, Agarwal S, Misra S, Verma M, Das KJM, Senthil Kumar SK, Kumar A, Mishra SK, Agarwal A, Agarwal G, Mishra A, Chand G, Verma AK, Kumar S. Comparative retrospective analysis of locoregional recurrence in unselected breast cancer patients treated with conventional versus hypofractionated radiotherapy at a tertiary cancer center? J Cancer Res Ther 2021; 16:1314-1322. [PMID: 33342790 DOI: 10.4103/jcrt.jcrt_389_18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background Role of hypofractionated radiotherapy (HFRT) in early breast cancer is established; comparatively, there are limited data for HFRT in locally advanced breast cancer (LABC). We report the impact of HFRT in unselected breast cancer patients in comparison with historically treated patients with conventional fractionated radiotherapy (CFRT). Patients and Methods Records of 463 breast cancer patients treated between January 09 and July 13 with CFRT (50 Gy/25 fr) or HFRT (42.4 Gy in 16 fractions or 40 Gy in 15 fractions) in two sequential periods were retrospectively reviewed. The analysis was done in August 2018. The primary endpoint was to compare the differences in locoregional recurrence rate. Results Of the 463 patients, 209 received CFRT and 254 received HFRT. The median age was 48 years (interquartile range: 40-56), premenopausal (CFRT: 23% vs. HFRT 39%, P = 0.005). The most common pathology was infiltrating ductal carcinoma (81%) with Grade III tumors (45%), estrogen receptor (+) was seen in 44%, triple-negative breast cancer in 34%, and Her2Neu (3+) were seen in 27%. Two hundred and fifty-four patients (54.5%) had undergone breast-conserving surgery (BCS) and 209 patients (45%) modified radical mastectomy (MRM). Nodal radiotherapy was delivered in 76% versus 64% in patients receiving CFRT versus HFRT, respectively (P = 0.005). With a median follow-up of 46 months in CFRT and 57 months in HFRT, 9/209 (4.3%) patients in CFRT and 7/254 (2.7%) in HFRT had locoregional relapse (LRR). The 4 years#39; actuarial local recurrence-free survival (LRFS) in CFRT versus HFRT was 95% versus 97% (P = 0.37). The mean estimated LRFS (local relapse-free survival) for CFRT is 113.4 months and for HFRT 94.2 months (P = 0.3). Conclusions The risk of local recurrence among patients of breast cancer treated with HFRT after BCS or MRM was not worse when compared to CFRT.
Collapse
Affiliation(s)
- Rajan Yadav
- Department of Radiotherapy, SGPGIMS, Lucknow, Uttar Pradesh, India
| | - Punita Lal
- Department of Radiotherapy, SGPGIMS, Lucknow, Uttar Pradesh, India
| | - Sushma Agarwal
- Department of Radiotherapy, SGPGIMS, Lucknow, Uttar Pradesh, India
| | - Shagun Misra
- Department of Radiotherapy, SGPGIMS, Lucknow, Uttar Pradesh, India
| | - Mranalini Verma
- Department of Radiotherapy, SGPGIMS, Lucknow, Uttar Pradesh, India
| | - K J Maria Das
- Department of Radiotherapy, SGPGIMS, Lucknow, Uttar Pradesh, India
| | | | - Anup Kumar
- Department of Biostatistics, SGPGIMS, Lucknow, Uttar Pradesh, India
| | - S K Mishra
- Department of Endosurgery, SGPGIMS, Lucknow, Uttar Pradesh, India
| | - Amit Agarwal
- Department of Endosurgery, SGPGIMS, Lucknow, Uttar Pradesh, India
| | - Gaurav Agarwal
- Department of Endosurgery, SGPGIMS, Lucknow, Uttar Pradesh, India
| | - Anjali Mishra
- Department of Endosurgery, SGPGIMS, Lucknow, Uttar Pradesh, India
| | - Gyan Chand
- Department of Endosurgery, SGPGIMS, Lucknow, Uttar Pradesh, India
| | - A K Verma
- Department of Endosurgery, SGPGIMS, Lucknow, Uttar Pradesh, India
| | - Shaleen Kumar
- Department of Radiotherapy, SGPGIMS, Lucknow, Uttar Pradesh, India
| |
Collapse
|
27
|
Abstract
We investigated a base-promoted protocol for the intermolecular anti-Markovnikov hydroamidation of vinyl arenes with arylamides to furnish the arylethylbenzamides with excellent chemo- and regioselectivity. The reaction tolerates an extensive variety of functional groups and has been successfully extended with electronically varied handles, aminobenzamides, electron-rich/electron-deficient heterocyclic amides, and vinyl arenes to afford the hydroamidated products. Excellent chemoselectivity was observed for the amide group over amine. The proposed mechanism and vital role of the solvent was well supported by deuterium labeling studies and control experiments.
Collapse
Affiliation(s)
- Ayushee
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Monika Patel
- Ramjas College, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Priyanka Meena
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Kousar Jahan
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) S.A.S. Nagar, Mohali 160062, Punjab, India
| | - Prasad V Bharatam
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) S.A.S. Nagar, Mohali 160062, Punjab, India
| | | |
Collapse
|
28
|
Abstract
The application of fluorination reagent for the direct conversion of alcohols and phenols to fluorinated analogues.
Collapse
Affiliation(s)
- Trapti Aggarwal
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India
| | - Sushmita
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India
| | - Akhilesh K. Verma
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India
| |
Collapse
|
29
|
Mishra P, Chatterjee S, Verma AK. 2-Alkynylarylnitrile: An Emerging Precursor for the Generation of Carbo- and Heterocycles. ACS Omega 2020; 5:32133-32139. [PMID: 33376851 PMCID: PMC7758905 DOI: 10.1021/acsomega.0c04242] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 11/27/2020] [Indexed: 06/12/2023]
Abstract
In the pursuit of a coherent synthetic route for the synthesis of carbo- and heterocycles, 2-alkynylarylnitrile has been recognized as a useful and versatile building block in organic synthesis due to the dual capacity of this precursor to act with a nucleophilic of electrophilic nature. The alkynes implanted at the ortho position improved the reactivity of the substrate for tandem cyclization and annulations, which led to the synthesis of diverse and complex cyclic compounds. This mini review summarizes the literature on the synthetic transformations of 2-alkynylarylnitrile into biologically relevant heterocycles as well as carbocycles such as isoindoles, isoquinolines, naphthalenes, and indenones as well as building blocks for the synthesis of various natural products. We hope that this concise review will be a promissory entry for future research in this area.
Collapse
|
30
|
Mittal A, Gopishankar N, Koleda J, Verma AK, Kumar P. Development and characterization of urethane substituted diacetylene based radiochromic films for medical radiation dosimetry. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2020.109119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
31
|
Abstract
A series of palladium N-heterocyclic carbene (NHC) complexes of type trans-{(NHC)PdCl2L} (L = C5H5N, 3-ClC5H4N, and PPh3) (3-5) have been developed as efficient precatalysts for direct C-H bond arylation of various heteroarenes. In particular, an in situ generated new NHC ligand derived from {1,3-di-(2,6-diethylphenyl)acenaphtho[1,2-d] imidazolium} chloride (2) is used for the stabilization of the palladium metal center. Among the screened palladium precatalysts (3-5), the most active PEPPSI themed complex (3) was successfully employed toward direct C-H bond arylation of various heteroarenes and aryl bromides. A range of functional groups on aryl bromides as well as on heteroarenes sustained throughout the standard reaction conditions for easy access of various arylated heterocyclic compounds. Significantly, the utility of the protocol was demonstrated by the effective synthesis of a precursor of raloxifene, a selective estrogen receptor modulator.
Collapse
Affiliation(s)
- Anuj Kumar
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Manoj Kumar
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Akhilesh K Verma
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| |
Collapse
|
32
|
Umaraw P, Chauhan G, Mendiratta SK, Verma AK. Optimization of processing conditions for development of chicken meat incorporated whole wheat bread. J Food Sci Technol 2020; 58:2792-2805. [PMID: 34194113 DOI: 10.1007/s13197-020-04788-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 07/01/2020] [Accepted: 09/09/2020] [Indexed: 11/26/2022]
Abstract
Present study was conducted to explore the incorporation of high level of chicken meat powder for developing protein enriched whole wheat bread. The aim was to optimise meat level and processing conditions for development of chicken meat bread. Box-Beheken design of response surface methodology was used for optimising the processing conditions of chicken meat incorporated whole wheat bread as processing conditions strongly influence the product characteristics. Meat level (30-35%), proofing time (60-120 min) and cooking time (10-12 min) were contemplated as constrains or variable factors for their effect on responses such as baking yield, moisture, protein, fat, ash, redness and yellowness value, flavour, porosity and overall acceptability which are essential for product acceptability and marketability, while the cooking temperature was kept constant at 220 °C. The responses were assessed by evaluating the physicochemical, proximate, colour units and sensory evaluation. A high coefficient of regression > 0.90 was obtained for all the responses indicating the fit of model. The desirability achieved for these responses was 0.841 for 31.497% meat level with proofing time 107.17 min and baking time of 12.74 min. The study concluded with development of chicken meat bread having high protein content with optimised processing conditions of proofing and cooking time.
Collapse
Affiliation(s)
- Pramila Umaraw
- Division of Livestock Products Technology, Indian Veterinary Research Institute, Bareilly, Uttar Pradesh 243122 India
- Department of Livestock Products Technology, College of Veterinary and Animal Sciences, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh 250110 India
| | - G Chauhan
- Division of Livestock Products Technology, Indian Veterinary Research Institute, Bareilly, Uttar Pradesh 243122 India
| | - S K Mendiratta
- Division of Livestock Products Technology, Indian Veterinary Research Institute, Bareilly, Uttar Pradesh 243122 India
| | - Akhilesh K Verma
- Department of Livestock Products Technology, College of Veterinary and Animal Sciences, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh 250110 India
| |
Collapse
|
33
|
Dobriyal N, Sagarika P, Shrivastava A, Verma AK, Islam Z, Gupta P, Mochizuki T, Abe F, Sahi C. Over-expression of Caj1, a plasma membrane associated J-domain protein in Saccharomyces cerevisiae, stabilizes amino acid permeases. Biochim Biophys Acta Biomembr 2020; 1862:183435. [PMID: 32777224 DOI: 10.1016/j.bbamem.2020.183435] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 07/08/2020] [Accepted: 07/27/2020] [Indexed: 11/17/2022]
Abstract
Hsp70: J-domain protein (JDP) machines, along with the cellular protein degradation systems play a central role in regulating cellular proteostasis. An equally robust surveillance system operates at the plasma membrane too that affects proper sorting, stability as well as the turnover of membrane proteins. Although plausible, a definitive role of the Hsp70: JDP machine in regulating the stability of plasma membrane proteins is not well understood in Saccharomyces cerevisiae. Here we show that a moderate over-expression of Caj1, one of the thirteen JDPs residing in the nucleo-cytosolic compartment of S. cerevisiae reduced the cold sensitivity of tryptophan auxotrophic yeast cells by stabilizing tryptophan permeases, Tat1 and Tat2 in a J-domain dependent manner. Concomitantly, higher Caj1 levels also caused slow growth and increased plasma membrane damage at elevated temperatures possibly due to the stabilization of thermolabile plasma membrane proteins. Finally, we show that although majorly cytosolic, Caj1 also co-localizes with the membrane dye FM4-64 at the cellular periphery suggesting that Caj1 might interact with the plasma membrane. Based on the results presented in this study, we implicate the Hsp70: Caj1 chaperone machine in regulating the stability or turnover of plasma membrane proteins in budding yeast.
Collapse
Affiliation(s)
- N Dobriyal
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Madhya Pradesh, India
| | - P Sagarika
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Madhya Pradesh, India
| | - A Shrivastava
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Madhya Pradesh, India
| | - A K Verma
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Madhya Pradesh, India
| | - Z Islam
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Madhya Pradesh, India
| | - P Gupta
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Madhya Pradesh, India
| | - T Mochizuki
- Molecular Genetic Research, Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - F Abe
- Molecular Genetic Research, Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - C Sahi
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Madhya Pradesh, India.
| |
Collapse
|
34
|
Saini KM, Saunthwal RK, Sushmita, Verma AK. Synthesis of cyclopentaquinolinone and cyclopentapyridinone from ortho-alkynyl-N-arylaldehyde via superbase-promoted C-N, C-O and C-C bond formation. Org Biomol Chem 2020; 18:5594-5601. [PMID: 32644087 DOI: 10.1039/d0ob01281e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An environmentally benign, transition metal-free, superbase-mediated intramolecular annulation of o-alkynylaldehydes with primary amines forms highly functionalized amino-substituted cyclopentaquinolinones and cyclopentapyridinones via C-N, C-C, and C[double bond, length as m-dash]O bond formation. Contrary to the traditional approaches of ring closures, a different mode of annulation is disclosed. The protocol involves the in situ generations of imine intermediate followed by potassium hydroxide-promoted intramolecular cyclization and subsequent dimethyl sulfoxide induced dehydrogenation leads to the formation of N-heterocycles. X-ray crystallographic studies support the assigned structures of the amino-fused N-heterocycles.
Collapse
|
35
|
Kumar M, Verma S, Verma AK. Ru(II)-Catalyzed Oxidative Olefination of Benzamides: Switchable Aza-Michael and Aza-Wacker Reaction for Synthesis of Isoindolinones. Org Lett 2020; 22:4620-4626. [DOI: 10.1021/acs.orglett.0c01237] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Manoj Kumar
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Shalini Verma
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | | |
Collapse
|
36
|
Sushmita, Aggarwal T, Saini KM, Verma AK. Olefin-Oriented Selective Synthesis of Linear and Branched N-Alkylated Heterocycles by Hydroamination. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000373] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Sushmita
- Department of Chemistry; University of Delhi; 110007 Delhi India
| | - Trapti Aggarwal
- Department of Chemistry; University of Delhi; 110007 Delhi India
| | | | | |
Collapse
|
37
|
Umaraw P, Munekata PE, Verma AK, Barba FJ, Singh V, Kumar P, Lorenzo JM. Edible films/coating with tailored properties for active packaging of meat, fish and derived products. Trends Food Sci Technol 2020. [DOI: 10.1016/j.tifs.2020.01.032] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
38
|
Umaraw P, Chauhan G, Mendiratta SK, Verma AK, Arya A. Effect of oregano and bay as natural preservatives in meat bread for extension of storage stability at ambient temperature. J FOOD PROCESS PRES 2020. [DOI: 10.1111/jfpp.14375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pramila Umaraw
- Division of Livestock Products Technology Indian Veterinary Research Institute Bareilly India
- Department of Livestock Products Technology College of Veterinary and Animal Sciences Sardar Vallabhbhai Patel University of Agriculture and Technology Meerut India
| | - Geeta Chauhan
- Division of Livestock Products Technology Indian Veterinary Research Institute Bareilly India
| | - Sanjod Kumar Mendiratta
- Division of Livestock Products Technology Indian Veterinary Research Institute Bareilly India
| | - Akhilesh K. Verma
- Department of Livestock Products Technology College of Veterinary and Animal Sciences Sardar Vallabhbhai Patel University of Agriculture and Technology Meerut India
| | - Anita Arya
- Division of Livestock Products Technology Indian Veterinary Research Institute Bareilly India
| |
Collapse
|
39
|
Saini KM, Saunthwal RK, Sushmita, Verma AK. Transition‐Metal‐Free Reverse Reactivity of (2‐Alkynyl)‐Arylaldimines: Assembly of Functionalized Amino‐Indinones. Chemistry 2020. [DOI: 10.1002/chem.201904294] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
| | - Rakesh K. Saunthwal
- Department of ChemistryUniversity of Delhi Delhi 110007 India
- School of ChemistryUniversity of Bristol Bristol BS8 1TS UK
| | - Sushmita
- Department of ChemistryUniversity of Delhi Delhi 110007 India
| | | |
Collapse
|
40
|
Abstract
A transition-metal-free approach for construction of nitronaphthylamines has been developed for the first time through aza-henry, chemoselective, and regioselective annulation of 2-alkynylbenzonitriles with nitromethane. In addition, the strategy provides an elegant, operationally simple and atom-economical route for the synthesis of nitroamino substituted heterocyclic scaffolds, featuring a range of sensitive functional groups. The reaction could also devise acetonitrile and acetophenone as nucleophile. The protocol has been successfully implemented for late-stage modification of bioactive molecules.
Collapse
Affiliation(s)
- Shalini Verma
- Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Manoj Kumar
- Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Akhilesh K Verma
- Department of Chemistry , University of Delhi , Delhi 110007 , India
| |
Collapse
|
41
|
Mishra PK, Kumar A, Verma AK. BF3-Etherate-catalyzed tandem reaction of 2-formylarylketones with electron-rich arenes/heteroarenes: an assembly of isobenzofurans. Chem Commun (Camb) 2020; 56:6122-6125. [DOI: 10.1039/d0cc02760j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient and BF3·Et2O-catalyzed chemoselective synthesis of diversified 1,3-diarylisobenzofuran in a high yield has been described.
Collapse
Affiliation(s)
| | - Ankit Kumar
- Department of Chemistry
- University of Delhi
- Delhi 110007
- India
| | | |
Collapse
|
42
|
Abstract
Applications of the N-fluorobenzenesulfonimide (NFSI) reagent in organic synthesis.
Collapse
Affiliation(s)
- Sushmita
- Synthetic Organic Chemistry Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| | - Trapti Aggarwal
- Synthetic Organic Chemistry Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| | - Sonu Kumar
- Synthetic Organic Chemistry Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| | - Akhilesh K. Verma
- Synthetic Organic Chemistry Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| |
Collapse
|
43
|
Sushmita, Aggarwal T, Shibata N, Verma AK. Triple‐Bond Directed Csp
2
−N Bond Formation with
N
‐Fluorobenzenesulfonimide as Aminating Source: One‐Step Transformation of Aldehydes into Amines. Chemistry 2019. [DOI: 10.1002/chem.201903495] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sushmita
- Department of ChemistryUniversity of Delhi Delhi 110007 India
| | - Trapti Aggarwal
- Department of ChemistryUniversity of Delhi Delhi 110007 India
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences and Department of, Life Science and Applied ChemistryNagoya Institute of Technology Gokiso, Showa-ku Nagoya 466-8555 Japan
| | | |
Collapse
|
44
|
Kumar S, Saunthwal RK, Saini KM, Verma AK. Dual function of carbon tetrachloride: synthesis of chlorinated heterocycles. Chem Commun (Camb) 2019; 55:10721-10724. [PMID: 31429428 DOI: 10.1039/c9cc04746h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient tandem approach to invent highly chlorinated and structurally diversified dihydropyridine fused heterocycles from easily accessible ortho-alkynylaldehydes and primary amines under metal-free conditions via four sequential bond formations is described. The proposed tandem route proceeds via a carbon tetrachloride-mediated 6-endo-dig ring closure followed by nucleophilic attack of the trichloromethyl anion.
Collapse
Affiliation(s)
- Shiv Kumar
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India.
| | - Rakesh K Saunthwal
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India.
| | - Kapil M Saini
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India.
| | - Akhilesh K Verma
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India.
| |
Collapse
|
45
|
Kumar M, Verma S, Kumar A, Mishra PK, Ramabhadran RO, Banerjee S, Verma AK. Mechanistic insights of Cu(ii)-mediated ortho-C-H amination of arenes by capturing fleeting intermediates and theoretical calculations. Chem Commun (Camb) 2019; 55:9359-9362. [PMID: 31317149 DOI: 10.1039/c9cc04317a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The capture of reactive intermediates empowers chemists to conjecture the detail of a chemical transformation. Here we explore the mechanism of a C-H amination by intercepting short-lived intermediates in real time using online mass spectrometry. Computational study unravels the favorable pathway of the proposed dual mechanism of the reaction.
Collapse
Affiliation(s)
- Manoj Kumar
- Department of Chemistry, University of Delhi, Delhi 110007, India.
| | - Shalini Verma
- Department of Chemistry, University of Delhi, Delhi 110007, India.
| | - Anubhav Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Tirupati, Tirupati 517507, India.
| | - Pawan K Mishra
- Department of Chemistry, University of Delhi, Delhi 110007, India.
| | - Raghunath O Ramabhadran
- Department of Chemistry, Indian Institute of Science Education and Research Tirupati, Tirupati 517507, India.
| | - Shibdas Banerjee
- Department of Chemistry, Indian Institute of Science Education and Research Tirupati, Tirupati 517507, India.
| | - Akhilesh K Verma
- Department of Chemistry, University of Delhi, Delhi 110007, India.
| |
Collapse
|
46
|
Abstract
Metal-free regioselective hydration of o-alkynylaldehydes with the assistance of neighboring carbonyl oxygen is disclosed. The developed protocol provides a facile route to synthesize a series of multisubstituted carbonyl containing scaffolds that enable the potential application toward the synthesis of highly diversified 5-azaindoles. γ-Carbolines and 2,8-diazacarbazoles can also be accessed directly without isolating the dicarbonyl compounds. The developed methodology is operationally simple and environment-friendly, tolerates a wide variety of functional groups, and is applicable toward large scale synthesis.
Collapse
Affiliation(s)
- Shalini Verma
- Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Manoj Kumar
- Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Pawan K Mishra
- Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Akhilesh K Verma
- Department of Chemistry , University of Delhi , Delhi 110007 , India
| |
Collapse
|
47
|
Abstract
Copper-mediated direct ortho-C-H amination of arenes has been accomplished with the aid of easily removable bidentate pyridine N-oxide as a directing group. The use of free cyclic secondary amines and anilines as aminating agents and inexpensive copper acetate makes the strategy more effective and favorable from the economic point of view. This reaction is compatible with a wide range of functional groups to synthesize a variety of amine-containing products of high interest. This method also allows the short synthesis of the central scaffold of pharmaceutically relevant Staphylococcus aureus Sortase A inhibitors.
Collapse
Affiliation(s)
- Manoj Kumar
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Shalini Verma
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Pawan K Mishra
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Akhilesh K Verma
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| |
Collapse
|
48
|
Verma AK, Chatli MK, Kumar P, Mehta N. Antioxidant and Antimicrobial Activity of Porcine Liver Hydrolysate in Meat Emulsion and Their Influence on Physico-Chemical and Color Deterioration During Refrigeration Storage. J Food Sci 2019; 84:1844-1853. [PMID: 31218699 DOI: 10.1111/1750-3841.14683] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Revised: 04/16/2019] [Accepted: 05/13/2019] [Indexed: 11/27/2022]
Abstract
Present study explored the quality changes in meat emulsion during storage at refrigerated temperature prepared with inclusion of three different levels of liver protein hydrolysate (LPH) in meat emulsion (LPH-1: 0.03, LPH-2: 0.06, and LPH-3: 0.09%) and compared with control (LPH: 0.00%) and positive control (butylated hydroxytoluene: 0.02% w/w meat emulsion). Physico-chemicals, antioxidant activities, lipid oxidation, color profile, microbial quality, and microbial challenge test (MCT) were assessed for all groups. Results indicated that all evaluated attributes were considerably improved with increase in LPH concentration. Among treated groups, LPH-3 was maintained comparatively better for every attribute assessed during storage studying. Regarding microbial quality, LPH-3 showed (P ≤ 0.05) lower aerobic plate count, coliforms, and yeast mold counts than others. Likewise for MCT, significantly (P ≤ 0.05) lower microbial counts were recorded in LPH-3 during storage. Results concluded that LPH can be a good alternative substance for the preservation of meat for lower oxidation activity and bacterial growth. PRACTICAL APPLICATION: Meat emulsion is more prone to lipid oxidation and microbial contamination than fresh meat. However, for the preparation of convenient, value added meat products, better utilization of freezed meat and reduced cooking time have enhanced the demand of emulsion-based meat products. Liver protein hydrolysate can be a good alternative substance for the preservation of emulsion-based meat products. Treated groups better retained their physico-chemical properties, color indices, and showed lower oxidation and microbial counts than control. It can be exploited commercially for the preparation of functional foods, nutraceuticals, and cosmeceuticals.
Collapse
Affiliation(s)
- Akhilesh K Verma
- Dept. of Livestock Products Technology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences Univ., Ludhiana, Punjab, 141004, India.,Dept. of Livestock Products Technology, College of Veterinary and Animal Sciences, Sardar Vallabhbhai Patel Univ. of Agriculture and Technology, Meerut, Uttar Pradesh, 250110, India
| | - Manish Kumar Chatli
- Dept. of Livestock Products Technology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences Univ., Ludhiana, Punjab, 141004, India
| | - Pavan Kumar
- Dept. of Livestock Products Technology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences Univ., Ludhiana, Punjab, 141004, India
| | - Nitin Mehta
- Dept. of Livestock Products Technology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences Univ., Ludhiana, Punjab, 141004, India
| |
Collapse
|
49
|
Kumar A, Gupta VK, Mandil R, Rahal A, Verma AK, Yadav SK. Interplay of oxidative stress and antioxidant bio markers in oil adjuvant Brucella melitensis vaccinated and challenged mice. Vaccine 2019; 37:3343-3351. [PMID: 31064674 DOI: 10.1016/j.vaccine.2019.04.060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 04/14/2019] [Accepted: 04/19/2019] [Indexed: 01/22/2023]
Abstract
The intracellular nature of Brucella leads to rise in oxidative stress due to bacterial invasion, particularly at the site of predilection spleen and lymph nodes. The present study aimed to evaluate the erythrocytic and tissue specific oxidative stress responses induced during oil adjuvant killed Brucella melitensis vaccination. The results of the study clearly implicated a significant increase in level of catalase, and superoxide dismutase (SOD) activity and lipid peroxidation (LPO), and total protein content in erythrocytes after vaccination. The activity of glutathione-S-transferase (GST) was unaltered during the period of experiment. The catalase activity and GSH content was significantly increased in lung and spleen tissues. The tissues GST levels increased significantly in all tissues, while tissue SOD level increased significantly only in lung tissues. Thus, it can be inferred that oil adjuvant based Brucella vaccine induces negligible signs of inflammatory pathophysiology and supports the development of significant level of protection against virulent Brucella challenge.
Collapse
Affiliation(s)
- Amit Kumar
- Department of Immunology & Defense Mechanism, College of Biotechnology, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, 250110, India.
| | - V K Gupta
- CADRAD, Indian Veterinary Research Institute, Izatnagar, 243122, India
| | - Rajesh Mandil
- Department of Veterinary Pharmacology, College of Veterinary and Animal Sciences, Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut, 250110, India
| | - Anu Rahal
- Division of Goat Health, Central Institute for Research on Goats, Farha, Mathura, 281122, India
| | - A K Verma
- Department of Veterinary Medicine, College of Veterinary and Animal Sciences, Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut, 250110, India
| | - S K Yadav
- Department of Veterinary Microbiology, College of Veterinary and Animal Sciences, DUVASU, Mathura, 281001, India
| |
Collapse
|
50
|
Saini KM, Saunthwal RK, Kumar S, Verma AK. On water: iodine-mediated direct construction of 1,3-benzothiazines from ortho-alkynylanilines by regioselective 6-exo-dig cyclization. Org Biomol Chem 2019; 17:2657-2662. [PMID: 30762860 DOI: 10.1039/c9ob00128j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Herein, we report the 6-exo-dig ring closure of ortho-alkynylanilines with readily available aroyl isothiocyanate. An environmentally benign, metal- and base-free, iodine promoted cascade synthesis of highly functionalized (benzo[1,3]thiazin-2-yl)benzimidic acids has been accomplished via in situ generated ortho-alkynylthiourea. The established methodology employs the abundant chemical feedstock of ortho-alkynylanilines and aroyl isothiocyanates and could be applied in the late-stage synthesis of pharmaceutically active 1,3-benzothiazine containing molecules. Furthermore, the discovered protocol exclusively delivers bis (benzo[1,3]thiazin-2-yl)dibenzimidic acid products and preserves the iodo-olefin substitution pattern which can be exploited by further derivatization.
Collapse
Affiliation(s)
- Kapil Mohan Saini
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India.
| | | | | | | |
Collapse
|