A convenient synthesis of novel functionalized pyrimido[5`,4`:4,5]thieno[3,2-c]pyridazines and related fused systems.Phosphorus, Sulfur, and Silicon and the Related Elements, accepted for publication 183(12), 3079-3096 . A facile synthesis and heteroannulation of thiazolopyrimidine and related heterocyclic systems.Journal of Chemical Research, 9, 552-556 . Synthesis and antimicrobial activity of some annelated quinazoline derivatives. Journal of Chemical Research, 7, 461-466 . Synthesis of polyfunctionally substituted pyrazolonaphthyridine, pentaazanaphthalene and heptaazaphenanthrene derivatives. Phosphorus, Sulfur, and Silicon and the Related Elements, 181 (10), 2395-2409 . Synthesis and surface active properties of condensed and non-condensed quinazoline derivatives of industrial application. Synthesis and biological activity of new 1,3,4-thiadiazole derivatives. Chem., Paper, 59(1), 1-5, Synthesis of novel heterocycles with antimicrobial and surface activity. J. Heterocyclic Chem., 42 (1), 125-130 . Synthesis and biological activity of new 1,3,4-thiadiazole derivatives. Novel pyrimidine congeners as antimicrobial agents Synthesis of some aryl cinnamides and imidazolone derivatives of expected biological activities based on 2-(N-phthalimidomethyl)-4-benzylidene-5(4)-oxazolone. g-Oxo carboxylic acids in heterocyclic synthesis, III. Synthesis of biologically active 4-benzylamino-6-(5,5-dioxodibenzothiophen-2-yl)-2,3,4,5-tetrahydropyridazin-3-ones. a, b-Unsaturated γ-oxo carboxylic acids in heterocyclic synthesis II. Behavior of 4-(5,5-dioxodibenzothiophen-2-yl)-4-oxo-2-butenoic acid towards carbon nucleophiles under Michael reaction condition. Some reactions with 2-(2-carboxyethenyl)-4-hydrazinoquinazoline: synthesis of annelated and substituted quinazolines. Synthesis of some new substituted b-(quinazolin-2-yl)acrylic acid derivatives of expected biological activity. Synthesis of some functionalized 3-(4-thioxo-3,4-dihydroquinazolin-2-yl)acrylic acid of pharmaceutical interest. A convenient synthesis of new pentaazacyclopentanaphthalene and pentaazaphenanthrene derivatives. Synthesis of novel quinazoline derivatives as antimicrobial agents. Simple synthesis of some diphenylsulfapyrimidine acetates from chalcones and their antimicrobial activity. Synthesis of novel pyrimidines and related nitrogen heterocyclic ring systems as potential antimicrobial agents. N-[4-(Dicyanomethylazo)phenyl]saccharinylacetamide in the synthesis of pyridazine and pyrimidine derivatives. A convenient synthesis and pharmacological activity of novel annelated pyrimidine derivatives. g-Oxo carboxylic acids in heterocyclic synthesis: Part IV. Synthesis of some pyridazines containing phthalyl and tosyl amino acids using DCC as the condensing agent. Synthesis and antimicrobial activity of N-{4-[3-(4-chlorophenyl)- ethylene oxide carbonyl]phenyl}-2-(1,1,3-trioxo-1,3-dihydrobenzo[d]isothiazol-2-yl)acetamide. Synthesis and some reactions of new imidazo[5,1-c]triazine derivatives of biological interest. Synthesis of s-triazolo[3,4-a]phthalazine and related polynuclear heterocyclic systems. Utility of 4-{2-[2-(4-methoxyphenyl)vinyl]-4-oxo-4H-quinazolin-3-yl}benzoic acid hydrazide. Synthesis of novel heterocycles with antimicrobial and surface activity. Utility of imidazole derivative in the synthesis of biologically active heterocyclic systems. Novel and efficient synthesis of heterocycles as antimicrobial from 4-oxo-4-phenoxathiin-2-yl-but-2-enoic acid. Model studies related to the synthesis and reactions of 6-(phenoxathiin-2-yl)pyridazines. Ethyl {4-[2-(saccharin-2-yl)acetylsulfamoyl]phenylazo}cyanoacetate in the synthesis of polyfunctionally heteroaromatic derivatives. A synthetic approach and antimicrobial evaluation of annulated pyrimidine and triazine derivatives. Facile three-component synthesis of dithiocarbamate derivatives with potent antimicrobial activity. Efficient synthesis of thieno[2,3-d]pyrimidine and related fused systems. Revisit to the reaction of o-phenylenediamine with thiosemicarbazide to give benzimidazole-2-thione rather than benzotriazine-2-thione and its glycosylation. Quantum mechanical calculations of the cephalosporin nucleus. Synthesis and X-ray analysis of butyl and glycosyl(2-arylamino- 4,4-dimethyl-6-oxocyclohex-1-ene)carbodithioates and their possible cyclization to 2-thioxo-6,7-dihydro-1H-benzo[d][1,3] -thiazin-5(2H)-one derivatives. Synthesis of new peptidyl- and glycosylpyrimidine derivatives. Facile synthesis of new pyrazolopyrimidine derivatives of potential biosignificant interest Synthesis of nitrogen heterocycles from ethyl-3-(6-dibenzothiophen-2-ylpyridazin-3-ylamino)-3-oxopropanoate. Copolymerization parameters of 2-(N-phthalamido) ethyl methacrylate with different vinyl monomers. Synthesis, biological evaluation and molecular docking studies of benzyl, alkyl and glycosyl [2-(arylamino)-4,4-dimethyl-6-oxo-cyclohex-1-ene] carbodithioates as potential immunomodulatory and immunosuppressive agents. Antimicrobial activity of newly synthesized imidazolones, their oxadiazolyl and acyclic C-nucleosides. Synthesis, antitumor and antimicrobial evaluation of some novel thioglucosyl nucleosides. Synthesis of new acyclic C-nucleosides and their oxadiazolones as antimicrobial agents. Synthesis and antimicrobial evaluation of thioglucosides and acyclic C-nucleosides of 2-methylbenzimidazole. Synthesis of Novel Series of Phthalazine Derivatives as Potential Antitumor Agents. An Efficient Synthesis of some new 1,4-Disubstituted Phthalazinederivatives and their anticancer Activity. Synthesis of some novel 1,2,4-triazole derivatives as potential antimicrobial agents Synthesis of quinazoline derivatives as potential antimicrobial agents Synthesis of Some Azoles and Azines based based on quinoline -8-yloxy-acetohydraide Utility of 4-(isatin-3-ylideneamino)benzohydrazide in the synthesis of bioactive N-heterocyclic compounds