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Indian Journal of Chemistry |
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Sect. B: Organic Chemistry including Medicinal Chemistry Total visitors: 3,197 since 13-02-08 |
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VOL. 47B |
NUMBER 2 |
FEBRUARY 2008 |
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CONTENTS
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Advances in Contemporary
Research
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259 |
Deoximation of keto- and aldoximes to
carbonyl compounds |
Deprotection of keto and aldoximes can be achieved by using various hydrolytic, oxidative and reductive reagents. |
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Sandhyamayee Sahu, Sagarika Sahu, Sabita
Patel, Sukalyan Dash & Bijay K Mishra* |
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Papers
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272 |
Synthesis of 4-methylene-2-(1-nitromethylidene)-1,3-dithiolane and 4-methyl-2-(1-nitromethylidene)-1,3-dithiole from dipotassium 2-nitro-1,1-ethylenedithiolate |
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H Surya Prakash Rao |
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276 |
An efficient solventless synthesis of a-aryl-N-[1-methyl-2-(2/4-chlorophenyl)]ethyl
nitrones and their antimicrobial activity |
An efficient solventless
synthesis of a-aryl-N-[1-methyl-2-(4-chlorophenyl)]ethyl
nitrones has been achieved in excellent yield. The compounds are
characterized by IR, NMR and X-ray studies. The antimicrobial activity of the
synthesized compounds have also been investigated. |
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Chinnadurai Amutha, Sivaperuman Saravanan,
Perundurai Subramaniam Dhandapani, Shanmugam Muthusubramanian* & Shanmugaperumal Sivasubramanian |
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283 |
Study on the conjugate addition of indole
with 1,5-diaryl-1,4-pentadien-3-ones catalyzed by AlCl3 under
ultrasonication |
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Ji-Tai
Li*, Zhi-Ping Lin & Cai-Tong Liu
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291 |
Reactions of
5-benzoyl-/5-carbaldehyde-/5-(3-phenyl-acryloyl)-6-hydroxy-1H-pyrimidin-2,4-diones
with amines- Anti-cancer and metal sequestering properties |
The rationally designed pyrimidine based metal chelators show
appreciable anti-cancer activities at various cell lines of 59 human tumor
cell panels. |
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Palwinder
Singh*, Jatinder Kaur & Kamaldeep Paul |
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297 |
Design,
synthesis, antibacterial and antitubercular activity of cationic
antimicrobial peptide, ovine bactenecin5 |
A series of
shorter synthetic peptides analogues of ovine bactenecin5 are designed
synthesized and screened for their antibacterial and antitubercular activity. |
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S N Narendra Babu & K S
Rangappa* |
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Notes
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305 |
Synthesis and
characterization of 5-(cyclohexylsulfanyl)-4-aryl-1,2,3-selena/thiadiazoles |
The
synthesis
and characterization
of new 5-(cyclohexylsulfanyl)-4-aryl-1,2,3-selena/thiadiazoles, obtained from a-sulfanyl semicarbazones are described. The structures
of these compounds have been established by H NMR, C NMR and single crysal X-ray diffraction. |
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Sivaperuman
Saravanan, Kayambu Namitharan & Shanmugam
Muthusubramanian* |
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310 |
Chloroacetylation of arenes using
chloroacetyl chloride in the presence of FeCl3 modified
montmorillonite K10 |
Chloroacetylation of arenes using chloroacetyl chloride has been
studied in the presence of Fe-modified montmorillonite K10 catalysts
in a liquid phase. The catalysts have been prepared by treating
montmorillonite K10 with aqueous solution of FeCl3. Good yields
and selectivity are observed for the acylated product. |
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Tejashri B Paranjape, Geetanjali D Gokhale
& Shriniwas D Samant* |
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315 |
Ceric ammonium
nitrate (CAN) promoted efficient solid phase synthesis of amide derivatives:
A green approach |
Ceric ammonium nitrate (CAN) has
been found to be an efficient catalyst for the solid phase synthesis of amide
derivatives of wide range of substituted carboxylic acids and urea in
excellent yields under microwave irradiation conditions. High yields are achieved even on a gram
scale, while the reaction times were considerably shortened. This method displays both economic and
environmental advantages. |
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Ch Sanjeeva Reddy*, M Raghu & A Nagaraj |
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319 |
p-TsOH Catalyzed regioselective synthesis of 8,8'-methylene-bis-4-oxo-dihydrochromeno[4,3-c]pyrazoles |
The ethyl-5-[3-(ethoxycarbonyl)-4-hydroxybenzyl]-2-hydroxybenzoate
3 is prepared by the usual
esterification of 5-(3-carboxy-4-hydroxybenzyl)-2-hydroxy
benzoic acid 2. Compound 3 on reacting with ethyl acetoacetate
yields 3-acetyl-6-[(3-acetyl-4-hydroxy-2-oxo-2H-6-chromenyl)methyl]-4-hydroxy-2H-2-chromenone 4. The regioselective conversion, by cyclizing the hydrazone 5 of compound 4 to either 8,8'-methylene-bis-4-oxo-1,4-dihydrochromeno[4,3-c]pyrazoles
6 with p-toluene sulfonic
acid in refluxing xylene or 8,8'-methylene-bis-4-oxo-2,4-dihydrochromeno[4,3-c]pyrazoles 7 with
corresponding hydrazine hydrochloride in refluxing acetic acid is described. |
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Ch Sanjeeva Reddy* & A Nagaraj |
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325 |
A new scalarane
sesterterpene from a marine sponge Hyatella cribrifomis Hyatt of the Indian Ocean |
Chemical
Investigation of a marine sponge, Hyatella
cribriformis, of the
Indian ocean resulted in the isolation of a new scalarane sesterterpene, 24-β-methoxyscalarolide
4, along with known scalaranes- 12-epi-deoxoscalarin
1, 12-epi-12-deacetyl-25-deoxyscalarin 2 and scalarolide 3. The structure of compound 4 was determined on the basis of H
and C NMR, DEPT, H-H COSY and EIMS experiments. |
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M M Krishna
Kumar, N Krishna, P Muralidhar B S Sastry & D Venkata Rao* |
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329 |
Synthesis of azo
compounds containing thymol moiety |
The present work includes the
synthesis of azo compounds containing thymol moiety. |
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S M Koshti, J P Sonar, A E Sonawane, Y A Pawar, P S Nagle, P P Mahulikar & D H More* |
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Authors for correspondence are indicated by (*) |
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