Herein, we have established the formation of diaryl amide by aminocarbonylation of nitrobenzene with boronic acids. The method works in the catalytic presence of economical and commercially available CuI salt, which was significantly promoted by the FeSe(CO) cluster. Mo(CO) serves as a source of CO, and it also acts as a reductant with a combination of iron cluster.
View Article and Find Full Text PDFA selective -olefination of primary amides yields valuable motifs for pharmaceuticals. Primary amide-directed -olefination of benzamide using unactivated alkenes was successfully conducted with a ruthenium(II) catalyst. The established protocol demonstrates efficacy across various benzamides, achieving moderate to good yields with high functional group tolerance.
View Article and Find Full Text PDFObjectives: Purple blotch, caused by the necrotrophic pathogen Alternaria porri, is one of the most economically significant diseases of onion and allied crops. While the virulent nature of many Alternaria spp. has been identified, the pathogenic repertoire of A.
View Article and Find Full Text PDFWith the interest and knowing the importance of ferrocenyl conjugates, a direct amidation of ferrocenyl aldehyde has been developed under feasible conditions. Varieties of amines has been oxidatively coupled with ferrocene aldehyde in the presence of highly economical and robustly stable iron chalcogenide ironcarbonyl clusters [FeE(CO), E= S, Se, and Te] and TBHP. The reaction worked in greener solvent water at a moderate temperature of 70 °C and the ferrocenyl-amides in just 30 minutes.
View Article and Find Full Text PDFA 78-year-old woman with vertebral compression fractures (VCFs) and chronic back pain was the subject of this case study. To treat symptomatic VCFs, less invasive procedures such as balloon kyphoplasty and vertebroplasty were developed. Vertebroplasty involves injecting polymethylmethacrylate (PMMA) into the vertebral body to mechanically stabilize it.
View Article and Find Full Text PDF, also known as 'Salparni', is a valuable herb with significant medicinal properties. Previous studies on the plant have only used conventional GC-MS to analyse its metabolites. In this study, we utilised two-dimensional gas chromatography and time-of-flight mass spectrometry to precisely characterise the shoot and root volatiles of .
View Article and Find Full Text PDFSustainable and highly economical iron-catalyzed chemoselective reduction of C═C of α,β-unsaturated ketones has been established under mild reaction protocols. Water is used as a green and abundant surrogate of hydrogen and is scarcely used in organic synthetic transformations as a source of hydrogen. The developed protocol offers a broad spectrum for chemoselective transfer hydrogenation of α,β-unsaturated ketones.
View Article and Find Full Text PDFNHC-Pd(II) pincer catalyzed oxidative amination and hydroamination of olefins is developed under solvent-free aerobic conditions. Reaction offered a temperature-controlled synthesis of ()-enamine and β-amino esters to provide easy access and remarkable functional group tolerance for a variety of enamines. The developed approach renders an opportunity of scalability and flexibility, and besides this, the produced enamines can be transformed into many N-containing heterocycles, underscoring its potential usage in synthetic and pharmaceutical chemistry.
View Article and Find Full Text PDFThe MoS-based reduced graphene oxide aerogel (MoS-rGOA)-assisted organic transformation reactions are presented. MoS-rGOA is used as a heterogeneous catalyst for the reduction of benzene derivatives such as benzaldehyde, nitrobenzene, and benzonitrile to benzyl alcohol, aniline, and benzamide and their derivatives, respectively, in green solvents (water/methanol) and green reducing agents (hydrazine hydrate having N and H as byproducts). The mechanistic features of the reduction pathway, substrate scope, and the best suitable conditions by varying the temperature, solvent, reducing agent, catalyst loading, time, etc.
View Article and Find Full Text PDFUnlabelled: Purple blotch (PB), caused by (Ellis) Cifferi, is one of the most destructive diseases of onion worldwide. Rapid development and deployment of resistant onion varieties is the most effective approach to control this disease. A single dominant gene, was previously linked to PB resistance in onion cultivar 'Arka Kalyan'.
View Article and Find Full Text PDFSmall RNAs (sRNAs) are short non-coding regulatory RNA sequences that silence the complementary expressive transcripts through an endogenous RNA mediated interference mechanism (RNAi). These sRNAs typically move through plasmodesmata and phloem in plants to support disease resistance, and also through septal pores and vesicles in fungi to act as effector of pathogenicity. Notably, recent reports have shown the occurrence of a bidirectional trafficking of these sRNAs between the host plants and the attacking fungal phytopathogen which have significant implication in the nature of the infection.
View Article and Find Full Text PDFBackground: Due to multiple reasons, the faculty members in Nepal devote less than expected time to research and publication. This could be attributable to various challenges unique to each faculty member and their institution. The present study aims to evaluate the potential barriers to publication faced by the faculty of Maharajgunj Medical Campus, Kathmandu, Nepal.
View Article and Find Full Text PDFBackground: The pandemic of Coronavirus Disease 2019 (COVID-19), one of the most infectious diseases in the modern history, is caused by Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) and has had a profound health and economic toll, globally. This paper identifies the overall health status associated with COVID-19 pandemic in all 7 provinces of Nepal, a developing country in South Asia, analyzing data from January 2020 to February 2022. It focuses on the SARS-CoV-2 prevalence, transmission through wastewater and other routes, diagnostics, treatment options, and alternative medicines, thereby offering key perspectives for its management.
View Article and Find Full Text PDFPectobacterium carotovorum subsp. carotovorum (Pcc) is a gram-negative, broad host range bacterial pathogen which causes soft rot disease in potatoes as well as other vegetables worldwide. While Pectobacterium infection relies on the production of major cell wall degrading enzymes, other virulence factors and the mechanism of genetic adaptation of this pathogen is not yet clear.
View Article and Find Full Text PDFIsolated duodenal injury is rare as they are usually associated with other visceral injuries. Diagnosis of a duodenal injury is difficult, and its management is challenging. Hence, it is important to timely recognize such injuries for better outcome.
View Article and Find Full Text PDFT-DNA-free homozygous mutant lines developed through a single transcript CRISPR/Cas9 system harboring the desired modification in the CaERF28 locus exhibited significantly enhanced resistance to the anthracnose pathogen Colletotrichum truncatum coupled with the improved expression of defense responsive genes. Anthracnose, caused by Colletotrichum species, is a major disease of chilli (Capsicum annuum) accounting for significant pre- and post-harvest yield losses across the tropical and subtropical regions of the world. Management of chilli anthracnose using traditional methods have not met with noticeable success.
View Article and Find Full Text PDFUnlabelled: Although, the CH zinc finger (ZF) family of plant transcription factors have been implicated in multiple biological processes, they are yet to be characterized in the economically important chilli pepper (). In this study, a total of 79 CH ZF genes were identified in the pepper genome. Phylogenetic analysis categorized the pepper CH ZF (CaZF) members into five subfamilies each with unique conserved domains and functions.
View Article and Find Full Text PDFHighly stable and thermally robust iron chalcogenide carbonyl clusters FeE(CO) (E = S, Se or Te) have been explored for the reduction of nitrobenzene. A 15 min thermal heating of an aqueous solution of nitrobenzene and hydrazine hydrate in the catalytic presence of FeE(CO) (E = S, Se or Te) clusters yield average to excellent aniline transformations. Among the S, Se and Te based iron chalcogenised carbonyl clusters, the diselenide cluster was found to be most efficient and produce almost 90% yield of the desired amino product, the disulfide cluster was also found to be significantly active, produce the 85% yield of amino product, while the ditelluride cluster was not found to be active and produced only 49% yield of the desired product.
View Article and Find Full Text PDFDrought stress is primarily responsible for heavy yield losses and productivity in major crops and possesses the greatest threat to the global food security. While conventional and molecular breeding approaches along with genetic engineering techniques have been instrumental in developing drought-tolerant crop varieties, these methods are cumbersome, time consuming and the genetically modified varieties are not widely accepted due to regulatory concerns. Plant breeders are now increasingly centring towards the recently available genome-editing tools for improvement of agriculturally important traits.
View Article and Find Full Text PDFCorrection for 'Half-sandwich (η5-Cp*)Rh(iii) complexes of pyrazolated organo-sulfur/selenium/tellurium ligands: efficient catalysts for base/solvent free C-N coupling of chloroarenes under aerobic conditions' by Charu Sharma et al., Org. Biomol.
View Article and Find Full Text PDFThree new pyrazolated chalcogenoether ligated Rh(iii) half-sandwich complexes (1-3) were synthesised by the thermal reaction of chalcogenoether (S, Se and Te) substituted 1H-pyrazole ligands (L1-L3) and [(η5-C5Me5)RhCl]2 in methanol. The complexes were fully characterised by various spectroscopic techniques, and the molecular structures of complexes 1 and2 were also established through single crystal X-ray crystallographic analysis, which indicates a pseudo-octahedral half-sandwich piano-stool geometry around the rhodium metal. All three complexes were found to be thermally stable and insensitive towards air and moisture.
View Article and Find Full Text PDFDuchenne Muscle dystrophy (DMD) is a X-linked inherited disease predominantly caused by severe mutations in DMD gene leading to absence of dystrophin protein. Here we report a 14-year-old Mongolian boy suffering from proximal muscle weakness, pseudohypertrophic deltoid and gastrocnemius muscles since early childhood. Lactate dehydrogenase (LDH) and creatine kinase (CK) levels were elevated.
View Article and Find Full Text PDFMicroRNAs are small non-coding RNAs of 21-24 nucleotides in length that acts as important modulators of gene expression related to numerous biological processes including development and defense response in eukaryotes. However, only a limited report on onion (Allium cepa) miRNAs is available and their associated role in growth and development of onion is not yet clear. Therefore, it is of interest to identify miRNAs and their targets in Allium cepa using the genome survey sequences (GSSs) and expressed sequence tags (ESTs) and deduce the functions of the target genes using gene ontology (GO) terms.
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