NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemistry -Section B (IJC-B) >
IJC-B Vol.47B [2008] >
IJC-B Vol.47B(08) [August 2008] >


Title: Synthesis, characterization and pharmacological studies on some triazolothiadiazines and triazolothiadiazoles containing naphtho[2,b]furan
Authors: Ravindra, K C
Vagdevi, H M
Vaidya, V P
Keywords: Naphtho[2,1-b]furan
Triazole
Triazolothiadiazines
Triazolothiadiazole
Antimicrobial activity
Analgesic activity
Issue Date: Aug-2008
Publisher: CSIR
Abstract: The naphtho[2,1-b]furan-2-carbohydrazide 1, on reaction with carbon disulphide and ethanolic potassium hydroxide followed by treatment with hydrazine hydrate/phenyl hydrazine give 4-amino/anilino-5-naphtho[2,1-b]furan-2-yl-4H-1,2,4-triazole-3-thiols 2a,b. The compounds 2a,b when treated with chloroacetic acid undergo cycloaddition to produce 3-naphtho[2,1-b]furan-2-yl-5-H/aryl-5H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazin-6(7H)-ones 3a,b. Similar type of cycloaddition occurs on refluxing 2a,b with carbon disulphide in ethanolic potassium hydroxide. The resulting biheterocyclic compounds are identified as 3-naphtho[2,1-b]furan-2-yl-5-H/aryl-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole-6(5H)-thiones 4a,b. 3-Naphtho[2,1-b]furan-2-yl-6-aryl/5,6-diaryl-5,6-dihydro[1,2,4]triazolo[3,4-b][1,3,4]thiadiazoles 5a-p and 3-naphtho[2,1-b]furan-2-yl-6-aryl[1,2,4]triazolo[3,4-b][1,3,4]thiadiazoles 6a-d are obtained in good yield on reacting 2a,b, with appropriate aldehydes and with carboxylic acids separately. The newly synthesized compounds have been characterized by elemental analysis and spectral studies. The few selected compounds have been evaluated foe antimicrobial and analgesic activity.
Page(s): 1271-1276
ISSN: 0376-4699
Source:IJC-B Vol.47B(08) [August 2008]

Files in This Item:

File Description SizeFormat
IJCB 47B(8) 1271-1276.pdf273.34 kBAdobe PDFView/Open
 Current Page Visits: 619 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 555713 since 06-Feb-2009  Last updated on 15-Jul-2014Webmaster: nopr@niscair.res.in