Raja Roy

ORCID: 0000-0003-0048-0772
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About
Contact & Profiles
Research Areas
  • Metabolomics and Mass Spectrometry Studies
  • Natural product bioactivities and synthesis
  • Porphyrin and Phthalocyanine Chemistry
  • Advanced MRI Techniques and Applications
  • X-ray Diffraction in Crystallography
  • Crystallization and Solubility Studies
  • Chemical Synthesis and Analysis
  • Synthesis and Characterization of Heterocyclic Compounds
  • Cancer Treatment and Pharmacology
  • Advanced NMR Techniques and Applications
  • Synthesis of heterocyclic compounds
  • Synthesis and Biological Evaluation
  • South Asian Studies and Diaspora
  • NMR spectroscopy and applications
  • Crystallography and molecular interactions
  • Quinazolinone synthesis and applications
  • Bauxite Residue and Utilization
  • Phytochemistry and Biological Activities
  • Parasitic infections in humans and animals
  • Molecular spectroscopy and chirality
  • Metal-Catalyzed Oxygenation Mechanisms
  • Carbohydrate Chemistry and Synthesis
  • Phytochemistry and Bioactive Compounds
  • Liver Disease Diagnosis and Treatment
  • Asymmetric Synthesis and Catalysis

Sanjay Gandhi Post Graduate Institute of Medical Sciences
2015-2025

Centre of Biomedical Research
2015-2025

King's College London
2024

Toronto Metropolitan University
2023

Cardiff University
2023

King George's Medical University
2007-2022

Indian Agricultural Research Institute
2021

Process Research Ortech (Canada)
2013-2015

Deutsches Herzzentrum der Charité
2013

Tissue Dynamics (Israel)
2013

10.1016/j.trac.2012.02.007 article EN TrAC Trends in Analytical Chemistry 2012-03-06

Urinary bladder cancer is a major epidemiological problem that continues to grow each year. It opens avenues for investigative research the identification of new disease markers and diagnostic techniques. In this pilot study, utility non-invas

10.3233/cbm-2009-0115 article EN Cancer Biomarkers 2010-02-11

The synthesis, spectral and structural characterization of meso-aryl sapphyrins rubyrins containing heteroatoms such as S, O, Se in addition to pyrrole nitrogens are reported. synthesis the desired expanded porphyrins has been achieved using a single precursor, modified tripyrranes heteroatoms, through an unprecedented oxidative coupling reaction moderately good yields. product distribution isolated yields were found be dependent on nature acid catalyst its concentration. Use 0.1 equiv...

10.1021/ja991472k article EN Journal of the American Chemical Society 1999-09-21

OBJECTIVE: In vivo proton magnetic resonance spectroscopy was performed for 24 patients with pyogenic brain abscesses, to examine the consistency of spectral patterns and observe changes in metabolites treatment. METHODS: Localized spectra were obtained from 4- 8-ml volumes using stimulated echo acquisition mode spin sequences. Twenty-two treated combined surgical medical therapy, two conservatively. High-resolution 15 samples abscesses these patients, confirm assignments resonances seen...

10.1097/00006123-199801000-00008 article EN Neurosurgery 1998-01-01

An unprecedented coupling reaction of heteroatom-containing tripyrranes leads to the formation core-modified sapphyrins 1 and 2, which self-assemble in solid state form supramolecular ladders. Weak C−H⋅⋅⋅S C−H⋅⋅⋅Se hydrogen-bonding interactions addition C−H⋅⋅⋅N hydrogen bonds are responsible for observed structures.

10.1002/(sici)1521-3773(19981231)37:24<3394::aid-anie3394>3.0.co;2-4 article EN Angewandte Chemie International Edition 1998-12-31

Abstract Withania somnifera (L.) Dunal (Solanaceae), commonly known as Ashwagandha , is one of the most valued Indian medicinal plants with a number pharmaceutical and nutraceutical applications. Metabolic profiling has been performed by HR‐MAS NMR spectroscopy on fresh leaf root tissue specimens from four chemotypes W. . The lyophilized defatted clearly distinguishes resonances medicinally important secondary metabolites (withaferin A withanone) its distinctive quantitative variability...

10.1002/mrc.2817 article EN Magnetic Resonance in Chemistry 2011-09-13
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