1558-1564 A suspension of 4H-2-acetyl-3-amino furo [3,2-c] benzopyran 4-one 5a-d in aqueous sodium hydroxide is treated with acetyl chloride to give 4H-2-acetyl-3-acetylamido furo[3,2-c] benzopyran 4-one 6a-d. The compounds 6a-d and hydrazine hydrate in absolute alcohol is refluxed to give 11H-2,4-dimethyl-3,4-dihydro-3-amino-4-hydroxy-pyrimido[3,2-d] furo [3,2-c]benzopyran-11-one 7a-d which in formic acid is refluxed for 5 hr to give 4H-2-acetyl-3-(3´-methyl-1´,2´,4´-triazol-4´-yl) furo[3,2-c] benzopyran 4-one 8a-d. The structures of all these compounds have been established on the basis of the spectral and analytical data. All compounds have showed good antimicrobial activity
2-[4-(substituted benzylidenamino)-5-(substituted phenoxymethyl)-4H-1,2,4-triazol-3-yl thio] acetic ...
1710-17153-Formyl-4-hydroxycoumarin has been treated with semicarbazide to give 4-hydroxy-2-oxo-2H[1...
Abstract: 5-Hydroxy-3-methyl-1-(4,6-dimethylpyrimidin-2-yl)pyrazol-4-yl-1,3-butanedione 4, obtained ...
128-1333-Acetyl-4-hydroxy-2H[1]benzopyran-2-one 2a-d has been treated with bromodeoxybenzoin in NaOH...
1873-1878The coupling reaction of the diazonium solution of the 6-aminocoumarins (1a-c) with malon...
2727-2730The chalcones of 4-hydroxycoumarin such as 4-hydroxy-2-oxo-3-(1'-oxo-3'-phenylprop-2'-enyl...
1263-12674-Hydroxy-2H-2-oxo-3-methylidene-urea[1]benzopyrans 2a-d, 4-hydroxy-2H-2-oxo-3-methylidene...
314-317The Schiff bases 2a-d of 6-aminocoumarins 1a-d on reaction with 4-benzylidene-2-phenyloxazol...
2901-2904The chalcones of 4-hydroxycoumarins 1a-h on treatment with malononitrile in the presence o...
1210-12153-Formyl-2H-[1]-4-hydroxy-2-oxo-benzopyrans 1a-d on treatment with N-benzoyl glycine in th...
Nadkarny-Sacasa Research Laboratory, Department of Chemistry, St. Xavier's College, Bombay-400 001 M...
309-313The coupling reaction of the diazonium salt solution of the 6-aminocoumarins 1a-c with ethyla...
A series of novel substituted 1-(4-methoxybenzyl)-3-cyclopropyl-1H-pyrazol-5-amine benzamides 9(a-h)...
The synthesis of a range of 3-hydroxy-4-oxo-4H-pyran-2-carboxamide with antimicrobial activity is de...
Galal Elgemeie,1 Farag Altalbawy,2,3 Mohammed Alfaidi,3 Rania Azab,2,4 Atef Hassan5 1Department of ...
2-[4-(substituted benzylidenamino)-5-(substituted phenoxymethyl)-4H-1,2,4-triazol-3-yl thio] acetic ...
1710-17153-Formyl-4-hydroxycoumarin has been treated with semicarbazide to give 4-hydroxy-2-oxo-2H[1...
Abstract: 5-Hydroxy-3-methyl-1-(4,6-dimethylpyrimidin-2-yl)pyrazol-4-yl-1,3-butanedione 4, obtained ...
128-1333-Acetyl-4-hydroxy-2H[1]benzopyran-2-one 2a-d has been treated with bromodeoxybenzoin in NaOH...
1873-1878The coupling reaction of the diazonium solution of the 6-aminocoumarins (1a-c) with malon...
2727-2730The chalcones of 4-hydroxycoumarin such as 4-hydroxy-2-oxo-3-(1'-oxo-3'-phenylprop-2'-enyl...
1263-12674-Hydroxy-2H-2-oxo-3-methylidene-urea[1]benzopyrans 2a-d, 4-hydroxy-2H-2-oxo-3-methylidene...
314-317The Schiff bases 2a-d of 6-aminocoumarins 1a-d on reaction with 4-benzylidene-2-phenyloxazol...
2901-2904The chalcones of 4-hydroxycoumarins 1a-h on treatment with malononitrile in the presence o...
1210-12153-Formyl-2H-[1]-4-hydroxy-2-oxo-benzopyrans 1a-d on treatment with N-benzoyl glycine in th...
Nadkarny-Sacasa Research Laboratory, Department of Chemistry, St. Xavier's College, Bombay-400 001 M...
309-313The coupling reaction of the diazonium salt solution of the 6-aminocoumarins 1a-c with ethyla...
A series of novel substituted 1-(4-methoxybenzyl)-3-cyclopropyl-1H-pyrazol-5-amine benzamides 9(a-h)...
The synthesis of a range of 3-hydroxy-4-oxo-4H-pyran-2-carboxamide with antimicrobial activity is de...
Galal Elgemeie,1 Farag Altalbawy,2,3 Mohammed Alfaidi,3 Rania Azab,2,4 Atef Hassan5 1Department of ...
2-[4-(substituted benzylidenamino)-5-(substituted phenoxymethyl)-4H-1,2,4-triazol-3-yl thio] acetic ...
1710-17153-Formyl-4-hydroxycoumarin has been treated with semicarbazide to give 4-hydroxy-2-oxo-2H[1...
Abstract: 5-Hydroxy-3-methyl-1-(4,6-dimethylpyrimidin-2-yl)pyrazol-4-yl-1,3-butanedione 4, obtained ...