DESIGN, SYNTHESIS AND ANTIMICROBIAL ACTIVITIES OF 1-(4-OXO-3-(4-FLUOROPHENYL)-3H-QUINAZOLIN- 2-YL)-4-(SUBSTITUTED) THIOSEMICARBAZIDE DERIVATIVES

A new series of 1-(4-oxo-3-(4-fluorophenyl)-3H-quinazolin-2-yl)-4-(substituted) thiosemicarbazides (AR1-AR10) were obtained by the reaction of 2-hydrazino-3-(4-fluorophenyl) quinazolin-4(3H/)-one (6) with different dithiocarbamic acid methyl ester derivatives. The key intermediate 3-(4-fluorophenyl)...

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Autores principales:	ALAGARSAMY,V, APPANI,RAMGOPAL, SULTHANA,M. T, NARENDAR,B, SOLOMON,V. RAJA
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2016
Materias:	Quinazolinone Substituted thiosemicarbazide Anti-bacterial Antitubercular activity
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072016000200002
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spelling	oai:scielo:S0717-970720160002000022016-09-14DESIGN, SYNTHESIS AND ANTIMICROBIAL ACTIVITIES OF 1-(4-OXO-3-(4-FLUOROPHENYL)-3H-QUINAZOLIN- 2-YL)-4-(SUBSTITUTED) THIOSEMICARBAZIDE DERIVATIVESALAGARSAMY,VAPPANI,RAMGOPALSULTHANA,M. TNARENDAR,BSOLOMON,V. RAJA Quinazolinone Substituted thiosemicarbazide Anti-bacterial Antitubercular activity A new series of 1-(4-oxo-3-(4-fluorophenyl)-3H-quinazolin-2-yl)-4-(substituted) thiosemicarbazides (AR1-AR10) were obtained by the reaction of 2-hydrazino-3-(4-fluorophenyl) quinazolin-4(3H/)-one (6) with different dithiocarbamic acid methyl ester derivatives. The key intermediate 3-(4-fluorophenyl)-2-thioxo-2,3-dihydro-1H-quinazolin-4-one (4) was obtained by reacting 4-fluoroaniline (1) with carbon disulphide and sodium hydroxide in dimethyl sulphoxide to give sodium dithiocarbamate, which was methylated with dimethyl sulfate to yield the dithiocarbamic acid methyl ester (2) and condensed with methyl anthranilate (3) in ethanol yielded the desired compound (4) via the thiourea intermediate. The SH group of compound (4) was methylated for the favorable nucleophilic displacement reaction with hydrazine hydrate, which afford 2-hydrazino-3-(4-fluorophenyl)-3H-quinazolin-4-one (6). All synthesized compounds (AR1-AR10) were also screened for their antimicrobial activity against selective gram positive and gram negative by agar dilution method. In the present study compounds AR8 and AR9 were emerged as the most active compounds of the series.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.61 n.2 20162016-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072016000200002en10.4067/S0717-97072016000200002
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Quinazolinone Substituted thiosemicarbazide Anti-bacterial Antitubercular activity
spellingShingle	Quinazolinone Substituted thiosemicarbazide Anti-bacterial Antitubercular activity ALAGARSAMY,V APPANI,RAMGOPAL SULTHANA,M. T NARENDAR,B SOLOMON,V. RAJA DESIGN, SYNTHESIS AND ANTIMICROBIAL ACTIVITIES OF 1-(4-OXO-3-(4-FLUOROPHENYL)-3H-QUINAZOLIN- 2-YL)-4-(SUBSTITUTED) THIOSEMICARBAZIDE DERIVATIVES
description	A new series of 1-(4-oxo-3-(4-fluorophenyl)-3H-quinazolin-2-yl)-4-(substituted) thiosemicarbazides (AR1-AR10) were obtained by the reaction of 2-hydrazino-3-(4-fluorophenyl) quinazolin-4(3H/)-one (6) with different dithiocarbamic acid methyl ester derivatives. The key intermediate 3-(4-fluorophenyl)-2-thioxo-2,3-dihydro-1H-quinazolin-4-one (4) was obtained by reacting 4-fluoroaniline (1) with carbon disulphide and sodium hydroxide in dimethyl sulphoxide to give sodium dithiocarbamate, which was methylated with dimethyl sulfate to yield the dithiocarbamic acid methyl ester (2) and condensed with methyl anthranilate (3) in ethanol yielded the desired compound (4) via the thiourea intermediate. The SH group of compound (4) was methylated for the favorable nucleophilic displacement reaction with hydrazine hydrate, which afford 2-hydrazino-3-(4-fluorophenyl)-3H-quinazolin-4-one (6). All synthesized compounds (AR1-AR10) were also screened for their antimicrobial activity against selective gram positive and gram negative by agar dilution method. In the present study compounds AR8 and AR9 were emerged as the most active compounds of the series.
author	ALAGARSAMY,V APPANI,RAMGOPAL SULTHANA,M. T NARENDAR,B SOLOMON,V. RAJA
author_facet	ALAGARSAMY,V APPANI,RAMGOPAL SULTHANA,M. T NARENDAR,B SOLOMON,V. RAJA
author_sort	ALAGARSAMY,V
title	DESIGN, SYNTHESIS AND ANTIMICROBIAL ACTIVITIES OF 1-(4-OXO-3-(4-FLUOROPHENYL)-3H-QUINAZOLIN- 2-YL)-4-(SUBSTITUTED) THIOSEMICARBAZIDE DERIVATIVES
title_short	DESIGN, SYNTHESIS AND ANTIMICROBIAL ACTIVITIES OF 1-(4-OXO-3-(4-FLUOROPHENYL)-3H-QUINAZOLIN- 2-YL)-4-(SUBSTITUTED) THIOSEMICARBAZIDE DERIVATIVES
title_full	DESIGN, SYNTHESIS AND ANTIMICROBIAL ACTIVITIES OF 1-(4-OXO-3-(4-FLUOROPHENYL)-3H-QUINAZOLIN- 2-YL)-4-(SUBSTITUTED) THIOSEMICARBAZIDE DERIVATIVES
title_fullStr	DESIGN, SYNTHESIS AND ANTIMICROBIAL ACTIVITIES OF 1-(4-OXO-3-(4-FLUOROPHENYL)-3H-QUINAZOLIN- 2-YL)-4-(SUBSTITUTED) THIOSEMICARBAZIDE DERIVATIVES
title_full_unstemmed	DESIGN, SYNTHESIS AND ANTIMICROBIAL ACTIVITIES OF 1-(4-OXO-3-(4-FLUOROPHENYL)-3H-QUINAZOLIN- 2-YL)-4-(SUBSTITUTED) THIOSEMICARBAZIDE DERIVATIVES
title_sort	design, synthesis and antimicrobial activities of 1-(4-oxo-3-(4-fluorophenyl)-3h-quinazolin- 2-yl)-4-(substituted) thiosemicarbazide derivatives
publisher	Sociedad Chilena de Química
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072016000200002
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DESIGN, SYNTHESIS AND ANTIMICROBIAL ACTIVITIES OF 1-(4-OXO-3-(4-FLUOROPHENYL)-3H-QUINAZOLIN- 2-YL)-4-(SUBSTITUTED) THIOSEMICARBAZIDE DERIVATIVES

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