A5024795952- Carbohydrate Chemistry and Synthesis
- Chemical Synthesis and Reactions
- Glycosylation and Glycoproteins Research
- Chemical Synthesis and Analysis
- Multicomponent Synthesis of Heterocycles
- Quantum Chromodynamics and Particle Interactions
- Synthesis and biological activity
- Sulfur-Based Synthesis Techniques
- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Bioactive Compounds and Antitumor Agents
- Molecular Sensors and Ion Detection
- Enzyme Production and Characterization
- Phytochemicals and Medicinal Plants
- Supramolecular Self-Assembly in Materials
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Natural product bioactivities and synthesis
- Analytical Chemistry and Sensors
- Advanced biosensing and bioanalysis techniques
- Synthetic Organic Chemistry Methods
- Synthesis of Organic Compounds
- Oxidative Organic Chemistry Reactions
- Natural Antidiabetic Agents Studies
- Synthesis and Reactivity of Heterocycles
St Xavier’s College
2021-2025
St. Xavier's College (Autonomous)
2021-2025
Jadavpur University
2015-2024
Luleå University of Technology
2013
National Chemical Laboratory
2006
College of Medical Sciences
2006
Indian Association for the Cultivation of Science
1992-1994
Indian Institute of Science Bangalore
1984
The Textile Institute
1958
A perimidine derivative <bold>1</bold> selectively senses nanomolar aqueous Cu<sup>2+</sup> spectrophotometrically, exhibits better antioxidant capability than <sc>l</sc>-ascorbic acid, and interacts with CT-DNA.
Carex baccans is used extensively as food additive for its medicinal and nutritional properties. Its extract demonstrated significant inhibition of α-glucosidase α-amylase with IC50 43.32 ± 1.22 562.18 5.98 μg/mL, respectively. A bio-assay guided approach was employed to identify the active constituent(s). Fractionation purification led isolation a potent inhibitor, (+)-α-viniferin, weak inhibitors smiglasides B. (+)-α-Viniferin quantified in fractions using HPLC method validated linearity,...
Abstract An efficient one-pot, multicomponent synthesis of 3,5-dicyanopyridines has been developed from the reaction malononitrile and different thiophenol or thiols with a variety aldehydes (aromatic including hindered ones, heteroaromatic, aliphatic) in presence 20 mol% K2CO3 refluxing 50% aqeuous ethanol. KMnO4 utilized as readily available, inexpensive oxidant for situ transformation initially formed dihydropyridine intermediate. also mediates one-pot formation chromeno[2,3-b]pyridines...
[structure: see text] 2-C-Acetoxymethyl glycal derivatives reacted with beta-naphthol in the presence of InCl(3) (30 mol %) to give chiral pyrano[2,3-b]naphtho[1,2-e]pyrans good excellent yields via stereoselective Ferrier rearrangement-tandem cyclization. The major glucose-derived product exhibited crystal packing C-H...O and C-H...pi (arene) interactions galactose-derived product, a low molecular mass organogelator (LMOG), formed rare type micro tubular gel assembly n-hexane.
Evaluation of α-glucosidase inhibitory activity led to the isolation six triterpene saponins from aerial parts Glinus oppositifolius including one new and five known constituents. The structure saponin, glinoside C (1), was established as 16-O-(β-D-glucopyranosyl)-3β,12β,16β,21α,22-pentahydroxy hopane by extensive use 1-D, 2-D NMR mass spectral techniques. other constituents identified were 3-O-(β-D-xylopyranosyl)-spergulagenin A (2), spergulacin (3), spergulin (4), (5) B (6). Compound 1...
Aromatic aldehydes react in one pot at room temperature with enolizable ketones and acetonitrile the presence of acetyl chloride catalytic amount BiOCl producing corresponding β-acetamido very high to excellent yields. BiCl3 generated situ from catalyzes multicomponent reaction.
Corrected by: Mechanistic Studies on a New Catalyst System (CuI-NaHSO4×SiO2) Leading to the One-Pot Synthesis of Imidazo[1,2-a]pyridines from Reactions 2-Aminopyridines, Aldehydes, and Terminal AlkynesSynthesis 2011; 2011(21): e3-e3DOI: 10.1055/s-0031-1289297