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Article ; Online: Multielectron Redox Afforded by a Pincer Ligand Promoting Kumada Cross-Coupling Reactions.

Singh, Vikramjeet / Jain, Harshit / Nath, Shounak / Adhikari, Debashis

Chemistry (Weinheim an der Bergstrasse, Germany)

2023 Volume 30, Issue 9, Page(s) e202303189

Abstract: The redox-active nature of a pincer has been exploited to conduct C-C cross-coupling reactions under mild conditions. A nickel complex with a NNN pincer was dimeric in the solid state, and the structure displayed a ... ...

Abstract	The redox-active nature of a pincer has been exploited to conduct C-C cross-coupling reactions under mild conditions. A nickel complex with a NNN pincer was dimeric in the solid state, and the structure displayed a Ni
Language	English
Publishing date	2023-12-21
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1478547-X
ISSN	1521-3765 ; 0947-6539
ISSN (online)	1521-3765
ISSN	0947-6539
DOI	10.1002/chem.202303189
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Evaluation of Direct Antimicrobial Susceptibility Testing from Positive Flagged Blood Cultures in Sepsis Patients.

Singh, Vikramjeet / Agarwal, Jyotsna / Nath, Soumya S / Sharma, Avneesh

Indian journal of critical care medicine : peer-reviewed, official publication of Indian Society of Critical Care Medicine

2024 Volume 28, Issue 4, Page(s) 387–392

Abstract: ... maintaining the accuracy.: How to cite this article: Singh V, Agarwal J, Nath SS, Sharma A. Evaluation ...

Abstract	Background: Presently, many laboratories are equipped with automated system for antimicrobial susceptibility testing (AST) for minimum inhibitory concentration-based reporting which enables the clinician to choose the right antimicrobial for timely treatment of sepsis. The study aimed to assess performance of direct AST from blood culture positive broth using automated AST system for accuracy and time taken to release the report. Materials and methods: The present study conducted in a 25-bedded ICU in North India for 12 months. Single morphotype of bacteria on gram stain from positively flagged blood culture bottles were included, which was directly identified (using an in-house protocol) with MALDI-TOF-MS from positive blood culture broths. DAST was carried out from 200 such blood culture broths and results were compared with reference AST (RAST) which was also done using VITEK-2 using overnight grown bacterial colonies as per standard protocol. Results: Among 60 isolates of Enterobacterales, 99% categorical agreement for both Conclusion: Direct AST from positive flagged blood culture bottles can significantly reduce the time to release the bacterial susceptibility report by up to 24 hours, at the same time maintaining the accuracy. How to cite this article: Singh V, Agarwal J, Nath SS, Sharma A. Evaluation of Direct Antimicrobial Susceptibility Testing from Positive Flagged Blood Cultures in Sepsis Patients. Indian J Crit Care Med 2024;28(4):387-392.
Language	English
Publishing date	2024-03-16
Publishing country	India
Document type	Journal Article
ZDB-ID	2121263-6
ISSN	1998-359X ; 0972-5229
ISSN (online)	1998-359X
ISSN	0972-5229
DOI	10.5005/jp-journals-10071-24687
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Synthesis, Biological Evaluation and in Silico Studies of 3-Hydroxy-N-(2-(substituted phenyl)-4-oxothiazolidin-3-yl)-2-napthamide Derivatives.

Kamboj, Shikha / Thakral, Samridhi / Kumar, Sunil / Singh, Vikramjeet

Chemistry & biodiversity

2023 Volume 20, Issue 6, Page(s) e202200976

Abstract: In the present study, a series of 3-hydroxy-N-(2-(substituted phenyl)-4-oxothiazolidin-3-yl)-2-napthamide derivatives were synthesized, characterized and evaluated for theirin vitroactivity, i. e., antimicrobial, antioxidant and anti-inflammatory. The ... ...

Abstract	In the present study, a series of 3-hydroxy-N-(2-(substituted phenyl)-4-oxothiazolidin-3-yl)-2-napthamide derivatives were synthesized, characterized and evaluated for theirin vitroactivity, i. e., antimicrobial, antioxidant and anti-inflammatory. The target compounds were synthesized by condensation reaction of 3-hydroxy-2-naphthoic acid hydrazide with substituted benzaldehydes which were subjected to cyclization reaction with thioglycolic acid and ZnCl
MeSH term(s)	Antioxidants/pharmacology ; Molecular Docking Simulation ; Anti-Infective Agents/pharmacology ; Antifungal Agents/chemistry ; Anti-Inflammatory Agents/pharmacology
Chemical Substances	Antioxidants ; Anti-Infective Agents ; Antifungal Agents ; Anti-Inflammatory Agents
Language	English
Publishing date	2023-05-26
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2139001-0
ISSN	1612-1880 ; 1612-1872
ISSN (online)	1612-1880
ISSN	1612-1872
DOI	10.1002/cbdv.202200976
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Redox noninnocence of the formazanate ligand applied to catalytic formation of α-ketoamides.

Singh, Vikramjeet / Kundu, Abhishek / Singh, Kirti / Adhikari, Debashis

Chemical communications (Cambridge, England)

2022 Volume 58, Issue 46, Page(s) 6630–6633

Abstract: The formazan ligands have been investigated as redox-noninnocent backbones for a long time. Despite their well-established behaviour as redox reservoirs, the demonstration of catalytic efficiency governed by redox noninnocence remains elusive. We report ... ...

Abstract	The formazan ligands have been investigated as redox-noninnocent backbones for a long time. Despite their well-established behaviour as redox reservoirs, the demonstration of catalytic efficiency governed by redox noninnocence remains elusive. We report an iron-formazanate molecule for efficiently preparing α-keto amides, where a crucial reductive cleavage of the substrate molecule is tightly regulated by the electron donation from the formazanate, in a reversible manner.
MeSH term(s)	Catalysis ; Electrons ; Iron ; Ligands ; Oxidation-Reduction
Chemical Substances	Ligands ; Iron (E1UOL152H7)
Language	English
Publishing date	2022-06-08
Publishing country	England
Document type	Journal Article
ZDB-ID	1472881-3
ISSN	1364-548X ; 1359-7345 ; 0009-241X
ISSN (online)	1364-548X
ISSN	1359-7345 ; 0009-241X
DOI	10.1039/d2cc02089k
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Unexplored Facet of Pincer Ligands: Super-Reductant Behavior Applied to Transition-Metal-Free Catalysis.

Singh, Vikramjeet / Singh, Rahul / Hazari, Arijit Singha / Adhikari, Debashis

JACS Au

2023 Volume 3, Issue 4, Page(s) 1213–1220

Abstract: Pincer ligands are well-established supporting ancillaries to afford robust coordination to metals across the periodic table. Despite their widespread use in developing homogeneous catalysts, the redox noninnocence of the ligand backbone is less utilized ...

Abstract	Pincer ligands are well-established supporting ancillaries to afford robust coordination to metals across the periodic table. Despite their widespread use in developing homogeneous catalysts, the redox noninnocence of the ligand backbone is less utilized in steering catalytic transformations. This report showcases a trianionic, symmetric NNN-pincer to drive C-C cross-coupling reactions and heterocycle formation via C-H functionalization, without any coordination to transition metals. The starting substrates are aryl chlorides that can tease the limit of a catalyst's ability to promote a reductive cleavage at a much demanding potential of -2.90 V vs SCE. The reducing power of the simple trianionic ligand backbone has been tremendously amplified by shining visible light on it. The catalyst's success relies on its easy access to the one-electron oxidized iminosemiquinonate form that has been thoroughly characterized by X-band electron paramagnetic resonance spectroscopy through spectroelectrochemical experiments. The moderately long-lived excited-state lifetime (10.2 ns) and such a super-reductive ability dependent on the one-electron redox shuttle between the bisamido and iminosemiquinonato forms make this catalysis effective.
Language	English
Publishing date	2023-04-10
Publishing country	United States
Document type	Journal Article
ISSN	2691-3704
ISSN (online)	2691-3704
DOI	10.1021/jacsau.3c00077
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Article: Matrix-Assisted Laser Desorption Ionization Time of Flight (MALDI-TOF) as an Indispensable Tool in Diagnostic Bacteriology: A Comparative Analysis With Conventional Technique.

Gupta, Akanksha / Agarwal, Jyotsna / Singh, Vikramjeet / Das, Anupam / Sen, Manodeep

Cureus

2023 Volume 15, Issue 3, Page(s) e36984

Abstract: Introduction: Owing to its accurate diagnosis, rapid turnaround time, cost effectivity, and less rates of error, Matrix-assisted Laser Desorption Ionization Time of Flight (MALDI-TOF) has replaced most of the phenotypic methods of identification. Thus, ... ...

Abstract	Introduction: Owing to its accurate diagnosis, rapid turnaround time, cost effectivity, and less rates of error, Matrix-assisted Laser Desorption Ionization Time of Flight (MALDI-TOF) has replaced most of the phenotypic methods of identification. Thus, the objective of this study was to compare and evaluate MALDI-TOF MS to conventional biochemical-to identify bacterial microorganisms. Methods: Different bacterial species isolated from 2010 to 2018 (pre-MALDI-TOF era), using routine bio-chemicals were compared to bacterial species isolated from 2019 to August 2021 (post MALDI-TOF), using MALDI-TOF, in the microbiology laboratory of a tertiary care hospital in North India. Chi-Square test (χ2) was used for the evaluation of bacterial identification between biochemical tests and MALDI-TOF MS association with a 95% confidence interval, considering wrong identification in genera or at a species level. Results: Many different and new genera and species of bacteria could be identified using MALDI-TOF, which was not possible using only routine manual bio-chemicals like
Language	English
Publishing date	2023-03-31
Publishing country	United States
Document type	Journal Article
ZDB-ID	2747273-5
ISSN	2168-8184
ISSN	2168-8184
DOI	10.7759/cureus.36984
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Article ; Online: Synthesis, in silico studies and biological screening of (E)-2-(3-(substitutedstyryl)-5-(substitutedphenyl)-4,5-dihydropyrazol-1-yl)benzo[d]thiazole derivatives as an anti-oxidant, anti-inflammatory and antimicrobial agents.

Kumar, Manoj / Kumar, Vijay / Singh, Vikramjeet / Thakral, Samridhi

BMC chemistry

2022 Volume 16, Issue 1, Page(s) 103

Abstract: A new series of (E)-2-(3-(substitutedstyryl)-5-(substitutedphenyl)-4,5-dihydropyrazol-1-yl)benzo[d]thiazole derivatives was synthesized and the chemical structures of synthesized compounds were deduced by IR and NMR spectral tools. These compounds were ... ...

Abstract	A new series of (E)-2-(3-(substitutedstyryl)-5-(substitutedphenyl)-4,5-dihydropyrazol-1-yl)benzo[d]thiazole derivatives was synthesized and the chemical structures of synthesized compounds were deduced by IR and NMR spectral tools. These compounds were synthesized via aldol condensation reaction of substituted benzaldehydes and acetone in alkaline ethanolic solution and their in vitro anti-oxidant, anti-inflammatory and antimicrobial activities were investigated. All the synthesized compounds displayed anti-oxidant potential with IC
Language	English
Publishing date	2022-11-24
Publishing country	Switzerland
Document type	Journal Article
ISSN	2661-801X
ISSN (online)	2661-801X
DOI	10.1186/s13065-022-00901-2
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Article: Redox noninnocence of the formazanate ligand applied to catalytic formation of α-ketoamides

Singh, Vikramjeet / Kundu, Abhishek / Singh, Kirti / Adhikari, Debashis

Chemical communications. 2022 June 8, v. 58, no. 46

2022

Abstract	The formazan ligands have been investigated as redox-noninnocent backbones for a long time. Despite their well-established behaviour as redox reservoirs, the demonstration of catalytic efficiency governed by redox noninnocence remains elusive. We report an iron–formazanate molecule for efficiently preparing α-keto amides, where a crucial reductive cleavage of the substrate molecule is tightly regulated by the electron donation from the formazanate, in a reversible manner.
Keywords	amides ; catalytic activity ; ligands
Language	English
Dates of publication	2022-0608
Size	p. 6630-6633.
Publishing place	The Royal Society of Chemistry
Document type	Article
ZDB-ID	1472881-3
ISSN	1364-548X ; 1359-7345 ; 0009-241X
ISSN (online)	1364-548X
ISSN	1359-7345 ; 0009-241X
DOI	10.1039/d2cc02089k
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Synthesis, in silico studies and biological screening of (E)-2-(3-(substitutedstyryl)-5-(substitutedphenyl)-4,5-dihydropyrazol-1-yl)benzo[d]thiazole derivatives as an anti-oxidant, anti-inflammatory and antimicrobial agents

Manoj Kumar / Vijay Kumar / Vikramjeet Singh / Samridhi Thakral

BMC Chemistry, Vol 16, Iss 1, Pp 1-

2022 Volume 19

Abstract: Abstract A new series of (E)-2-(3-(substitutedstyryl)-5-(substitutedphenyl)-4,5-dihydropyrazol-1-yl)benzo[d]thiazole derivatives was synthesized and the chemical structures of synthesized compounds were deduced by IR and NMR spectral tools. These ... ...

Abstract	Abstract A new series of (E)-2-(3-(substitutedstyryl)-5-(substitutedphenyl)-4,5-dihydropyrazol-1-yl)benzo[d]thiazole derivatives was synthesized and the chemical structures of synthesized compounds were deduced by IR and NMR spectral tools. These compounds were synthesized via aldol condensation reaction of substituted benzaldehydes and acetone in alkaline ethanolic solution and their in vitro anti-oxidant, anti-inflammatory and antimicrobial activities were investigated. All the synthesized compounds displayed anti-oxidant potential with IC50 values ranging from 0.13 to 8.43 µmol/ml. The compound Z13 exhibited potent anti-inflammatory activity with IC50 value of 0.03 µmol/ml compared with the standard ibuprofen, which showed IC50 value of 0.11 µmol/ml. On the other hand, most of the compounds had a certain antibacterial potential particularly against P. aeruginosa and among these derivatives, compound Z2 exhibited the highest potential against P. aeruginosa with MIC value of 0.0069 µmol/ml. The analysis of docking results demonstrated the binding affinity and hydrogen bond, electrostatic and hydrophobic interactions of all the synthesized compounds with their respective targets. In silico ADMET studies were carried out for the synthesized compounds and most of the compounds exhibited good ADMET profile.
Keywords	Dibenzalacetones ; Antimicrobial ; Anti-inflammatory ; DPPH assay ; Molecular docking ; ADMET ; Chemistry ; QD1-999
Subject code	540
Language	English
Publishing date	2022-11-01T00:00:00Z
Publisher	BMC
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Evaluation of augmentative biological control options against fruit and shoot borer, Conogethes punctiferalis (Guenée) (Lepidoptera

Sandeep Singh / Vikramjeet Singh / P. S. Shera / Masrat Siraj / Rajwinder Kaur Sandhu / Karim Maredia

Egyptian Journal of Biological Pest Control, Vol 33, Iss 1, Pp 1-

Crambidae) in guava in India

2023 Volume 8

Abstract: Abstract Background Conogethes punctiferalis (Guenée) (Lepidoptera: Crambidae) has emerged as one of the important pests of guava in Punjab, India. Chemical insecticides have been used for its management, which could have serious implications on ... ...

Abstract	Abstract Background Conogethes punctiferalis (Guenée) (Lepidoptera: Crambidae) has emerged as one of the important pests of guava in Punjab, India. Chemical insecticides have been used for its management, which could have serious implications on environmental and human health. As an alternative to chemical insecticides, biocontrol is the most appropriate alternative for its eco-friendly management. Two field experiments were therefore, conducted to evaluate efficacy of two biocontrol agents, Trichogramma chilonis Ishii (Hymenoptera: Trichogrammatidae) (egg parasitoid) and Chelonus blackburni Cameroon (Hymenoptera: Braconidae) (egg-larval parasitoid) against the borer during rainy season, 2020 and winter season, 2020–21. Results Four releases of both parasitoids at various dosages were carried out at weekly intervals starting from first week of July in rainy season and first week of October in winter season. Trichogramma chilonis @ 2000 parasitized eggs per tree was the best in reducing the fruit damage and increasing yield and net income over check in both rainy as well as winter season crops. There was 73.6% reduction in damage over control, 1.70 Metric tons (MT) increase in yield over control and 258.36 US $ per acre increase in net income over control in rainy season crop. During winter season, there was 62.5% reduction in damage, 1.98 MT increase in yield and 488.23 US $ per acre increase in net income over control. Conclusion Four augmentative releases of T. chilonis @ 2000 parasitized eggs per tree successfully controlled the fruit and shoot borer incidence in guava during rainy and winter season.
Keywords	Guava ; Borer ; Biocontrol ; Trichogramma chilonis ; Chelonus blackburni ; Agriculture ; S
Subject code	333
Language	English
Publishing date	2023-12-01T00:00:00Z
Publisher	SpringerOpen
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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