Indian Journal of Chemistry: Sec B- Organic Chemistry including Medicinal Chemistry

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Published by: NISCAIR (CSIR)

Subjects: Chemistry

Indian Journal of Chemistry (Section B) is published by the National Institute of Science Communication and Information Resources (NISCAIR)-CSIR, New Delhi. This journal publishes articles in Organic and Medicinal Chemistry. It includes full length papers, notes and communications and short reviews. The monthly issues covers articles in organic reaction mechanism, theoretical organic chemistry, structure-activity relationships, medicinal chemistry, synthesis of chiral compounds, bio-organic chemistry, enzymes in organic synthesis, reagents in organic synthesis, heterocyclic compounds, phytochemistry (natural products), amino acids, peptides and proteins, spectroscopy in characterization of organic compounds, chemoenzymatic and enantioselective synthesis of organic compounds, synthesis of fullerenes, metal-catalyzed asymmetric reactions, bioactive plant products and combinatorial chemistry.

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Editor,
Dr. P Paravatharajan
email: prema@niscair.res.in


ISSN No. :    0376-4699
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An efficient synthesis of 1-(quinoxalin-6-yl)-1H-1,2,3-triazole-4-carboxylic acid
Title: An efficient synthesis of 1-(quinoxalin-6-yl)-1H-1,2,3-triazole-4-carboxylic acid

Authors: Thirupathaiah, T; Laxminarayana, E; Chary, M Thirumala

Abstract: Efficient syntheses of quinoxalines from the reaction of glyoxal and o-phenylenediamine and formation of 1,2,3-triazole on the quinoxalines base moity are described.

Page(s): 761-762

QSAR modeling of HIV-1 reverse transcriptase inhibitor of aryluracil derivatives using ab initio and empirical calculations
Title: QSAR modeling of HIV-1 reverse transcriptase inhibitor of aryluracil derivatives using ab initio and empirical calculations

Authors: Sharma, Neetu; Dwivedi, Amrita; Srivastava, A K; Singh, Ajeet

Abstract: Quantitative structure–activity relationship (QSAR) studies have been performed on a series of 1-[(2-benzyloxyl/alkoxyl)methyl]-5-halo-6-aryluracil derivatives that are non-nucleoside reverse transcriptase inhibitors.  Various descriptors have been calculated based on empirical and density functional theory (DFT). Density functional theory based descriptors have been calculated at GGA-PW91 level. Several QSAR equations have been formulated through regression analysis and tested with external and internal validation tests. The best equations have been selected from the various statistically significant equations. Model equations have been cross validated by leave one out (LOO) technique. The calculated results suggest that the introduction of a halogen at the R2 position may contribute to the effectiveness of these compounds against RTI-resistant variants.

Page(s): 752-760

Chemical composition and antimicrobial activity of Syzygium caryophyllatum (L.) Alston leaf oil
Title: Chemical composition and antimicrobial activity of Syzygium caryophyllatum (L.) Alston leaf oil

Authors: Raj, Gopan; Pradeep, N S; George, V; Sethuraman, M G

Abstract: Chemical composition of the essential oil obtained from the leaves of Syzygium caryophyllatum has been analyzed by GC and GC-MS Twenty four compounds representing 89.7% of the oil have been identified. Major components are δ-cadinol (42.1%), caryophyllene <9-epi-β> (13.4%) and selin-11-en-4-α-ol (5.4%). Antimicrobial activity of the leaf oil has been carried out by disc diffusion method in vitro antimicrobial assay. As compared to standard fluconazole, a 1:2 dilution of the leaf oil shows strong inhibition against strains of Candida albicans. The Syzygium leaf oil exhibits a pronounced activity against Candida albicans with a minimal-inhibitory concentration (MIC) of 44.0 µg/mL.

Page(s): 747-751

New scaffold of 4-oxo-thiazolidine derivatives as potent anti-infective agents
Title: New scaffold of 4-oxo-thiazolidine derivatives as potent anti-infective agents

Authors: Godhani, Dinesh R; Jogel, Anand A; Sanghani, Anil M; Mehta, Jignasu P

Abstract: A new series of 4-oxo-thiazolidine has been synthesized and compounds 5a-j have been characterized by various techniques like FT-IR, 1H and 13C NMR, and mass spectroscopy. All the newly synthesized compounds have been screened against four bacterial strains: Staphylococcus aureus, Streptococcus pyogenus, Escherichia coli, Pseudomonas aeruginosa and two fungal pathogens:Candida albicans and Aspergillus clavatus. The results have been expressed as minimal inhibition concentration (MIC µg/mL) in comparison with standard drugs. Compounds 5a, 5c, 5d, 5e, and 5i show moderate to good activity against selected bacterial strains (MIC = 62.5 µg/mL to 125 µg/mL). In vitro antitubercular activity study of newly synthesized compounds 5a-j has been carried out against Mycobacterium tuberculosis H37Rv. Two compounds 5c and 5j have shown good antituberculosis activity in comparison with standard drugs.

Page(s): 734-746

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