Published by: NISCAIR (CSIR)
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.
Dr. P Paravatharajan
ISSN No. : 0376-4699
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A new embelin from the mangrove Aegiceras corniculatum
Title: A new embelin from the mangrove Aegiceras corniculatum
Authors: Thota, Satya Prakasa Rao; Sarma, Nittala S; Murthy, Y L N
Abstract: One new compound (2) and five known compounds (1,
3-6) have been isolated from the mangrove plant Aegiceras corniculatum collected from the Godavari mangrove forest,
The structure of the new compound has been established by 1H and 13C NMR
spectroscopy and mass spectral data as 2,5-didehydroxy-6-methylembelin (2). The known compounds have been characterized as 4-hydroxy-2-methoxybenzamide
(1), embelin (3), 5-O-ethylembelin (4), 5-O-methylembelin (5) and 4-methoxyresorcinol (6). Compounds 2-5 exhibit
moderate antimalarial activity. Embelin (3) shows activity against
chloroquine-resistant strains better than against chloroquine-sensitive strains
of Plasmodium falciparum.
Taraxerane-type triterpenoids from Portulaca oleracea Linn. seeds
Title: Taraxerane-type triterpenoids from Portulaca oleracea Linn. seeds
Authors: Mir, Showkat R; Ali, Mohammed
Abstract: Analysis of the methanolic extract of seeds
of Portulaca oleracea results in the
isolation of taraxerane-type triterpenoids, viz.,
taraxerol 1, acetyl aleuritolic acid
2, portaraxeroic acid A (olean-14-en-3β-yl acetoxy-23-oic acid) 3 and portaraxeroic acid B (olean-14-en-3β-yl acetoxy-30-oic acid) 4. The
structures of compounds have been determined on the basis of detailed
spectroscopic analysis. The significance of their occurrence in P. oleracea is discussed from the
A new cyclopentane derivative from Ficus pomifera Wall. and Curcuma leucorrhiza Roxb.
Title: A new cyclopentane derivative from Ficus pomifera Wall. and Curcuma leucorrhiza Roxb.
Authors: Wangkheirakpam, Sujata D; Asem, Satyavama D; Radhapiyari, Wangkheirakpam; Singh, Chingakham B; Yumnam, Rajkumar S; Laitonjam, Warjeet S
Abstract: Two new compounds 1
and 2 have been isolated along with
a known compound 3 from both Ficus pomifera Wall
and Curcuma leucorrhiza Roxb. The
compound 1 is a cyclopentane
compound 2 is a natural polymer
compound and compound 3 is β-sitosterol glucoside. The
similarity of compound 1 has been
studied by Reversed Phase-High Performance Liquid Chromatography (RP-HPLC). The
compounds 2 and 3 have further been identified by comparison with spectral data.
The compound 1 has been tested for
anti-microbial and antioxidant activities. The isolation of compound 1, 2
and 3 have been reported from different plants of different
families-Moraceae and Zingiberaceae for the first time.
Henry reaction catalyzed by recyclable [C4dabco]OH ionic liquid
Title: Henry reaction catalyzed by recyclable [C4dabco]OH ionic liquid
Authors: Keithellakpam, Sanjoy; Laitonjam, Warjeet S
Abstract: DABCO-based ionic liquid,
1-butyl-4-aza-1-azaniabicyclo[2.2.2]octane hydroxide, has been used as an
efficient catalyst for Henry reaction of various carbonyl compounds with
nitroalkanes affording very high yields within a short duration. This method is
very simple, clean and avoids hazardous organic solvents. The catalyst can be
easily recovered and recycled several times.
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