Results 91 to 100 of about 40,557 (208)

3-Phenyl-4-{3-[(p-tolyloxy)methyl]-7H-1,2,4-triazolo[3,4-b][1,3,4]thiadiazin-6-yl}sydnone

Acta Crystallographica Section E, 2010
In the title compound (systematic name: 3-phenyl-4-{3-[(p-tolyloxy)methyl]-7H-1,2,4-triazolo[3,4-b][1,3,4]thiadiazin-6-yl}-1,2,3-oxadiazol-3-ium-5-olate), C20H16N6O3S, an intramolecular C—H...O hydrogen bond generates an S(6) ring motif.
Jia Hao Goh, Hoong-Kun Fun, Nithinchandra, B. Kalluraya   +3 more
doaj   +1 more source

Synthesis, characterization, cellular uptake and interaction with native DNA of a bis(pyridyl)-1,2,4-oxadiazole copper(II) complex

, 2010
The copper(II) complex of 3,5-bis(2¢-pyridyl)-1,2,4-oxadiazole was synthesised and characterised. X-Ray crystallography revealed that the complex consists of a discrete [Cu(3,5-bis(2¢-pyridyl)-1,2,4-oxadiazole)2(H2O)2]2+ cation and two ClO4- anions.
Patrizia Portanova, Giorgi, Gianluca, Antonio Palumbo Piccionello, Silvestre Buscemi, Nicolò Vivona, PORTANOVA, Patrizia, Piccionello, Antonio Palumbo, VIVONA, Nicolo', Giuseppe Calvaruso, BARONE, Giampaolo, Annalisa Guarcello, TERENZI, Alessio, PALUMBO PICCIONELLO, Antonio, Giampaolo Barone, CALVARUSO, Giuseppe, GUARCELLO, Annalisa, Vivona, Nicolò, Alessio Terenzi, GIORGI, G, Andrea Pace, BUSCEMI, Silvestre, PACE, Andrea, Gianluca Giorgi   +22 more
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UNUSUAL WAY OF REACTION OF 3-AMINO-4-(5-CHLOROMETHYL-1,2,4-OXADIAZOLE-3-YL)-FURAZAN WITH HYDRAZINE

, 2017
The results of our study of the pathways of selective reactivity of 3-amino-4-(5-chloromethyl-1,2,4-oxadiazole-3-yl)furazan versus 5-unsubstituted or 5-methyl and 5-trifluoromethyl substituted 4-(5R-1,2,4-oxadiazole-3-yl)furazans (R = H, Me, CF3) towards
Elena V. Stepanova, Andrei I. Stepanov
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Synthesis, toxicity towards brine shrimp (Artemia salina Leach) and antimicrobial activity evaluation of 3,5-diphenylchlorinated-1,2,4- oxadiazoles = Síntese, toxicidade frente a Artemia salina Leach e avaliação da atividade antimicrobiana de 1,2,4-oxadiazóis-3,5-difenilclorados

Acta Scientiarum: Technology, 2005
The known oxadiazoles 3,5-bis-(phenyl)-1,2,4-oxadiazole (3a); the 3-(4-chlorophenyl)-5-phenyl-1,2,4-oxadiazole (3b); and the new 3,5-diphenylchlorinated-1,2,4-oxadiazoles 3c-e were synthesized from the reaction of benzamidoximes with an appropriated acid
Silvio Luiz Machado, Luciane Vieira dos Santos, Willian Ferreira da Costa, Benedito Prado Dias Filho, Maria Helena Sarragiotto   +4 more
doaj  

Antioxidant and Antitumor Activities of New Synthesized Aromatic C-Nucleoside Derivatives

Molecules, 2014
The carbohydrazide 1 was used as the precursor for the synthesis of a number of new aromatic C-nucleosides containing 1,3,4-oxadiazole 7, [1,3,4]oxadiazolo[2,3-a]isoindole 10b and pyrazole units 18. On the other hand, the thiosemicarbazone 20 was used as
Mohamed M. El Sadek, Nagwa S. Abd El-Dayem, Seham Y. Hassan, Mohamed A. Mostafa, Galila A. Yacout   +4 more
doaj   +1 more source

Synthesis and chemical characterization of CuII, NiII and ZnII complexes of 3,5-bis(20-pyridyl)-1,2,4-oxadiazole and 3-(20-pyridyl)5-(phenyl)-1,2,4-oxadiazole ligands

, 2011
The synthesis and structural characterization of NiII, CuII and ZnII complexes of two chelating 1,2, 4-oxadiazole ligands, namely 3,5-bis(20-pyridyl)-1,2,4-oxadiazole (bipyOXA) and 3-(20-pyridyl)5- (phenyl)-1,2,4-oxadiazole (pyOXA), is here reported ...
Giorgi, G, Giorgi, Gianluca, Antonio Palumbo Piccionello, Piccionello, Antonio Palumbo, BARONE, Giampaolo, Annalisa Guarcello, TERENZI, Alessio, PALUMBO PICCIONELLO, Antonio, Giampaolo Barone, GUARCELLO, Annalisa, Alessio Terenzi, Andrea Pace, PACE, Andrea, Gianluca Giorgi   +13 more
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On the dichotomic behaviour of the Z-2,4-dinitrophenylhydrazone of 5-amino-3-benzoyl-1,2,4-oxadiazole with acids in toluene and in dioxane/water: rearrangement versus hydrolysis

, 2004
The mononuclear rearrangement (MRH) of the Z-2,4-dinitrophenylhydrazone (4a) and of the Z-phenylhydrazone (4b) of 5-amino-3-benzoyl-1,2,4-oxadiazole into the relevant triazoles 5a and 5b in toluene has been quantitatively investigated in the presence ...
V. FRENNA, SPISANI, R., F. DANNA, V. PACE, MORGANTI, S, P. NITTI, D'ANNA, Francesca, FRENNA, Vincenzo, MORGANTI, STEFANO, SPINELLI, D, D. SPINELLI, NITTI, PATRIZIA, SPINELLI, DOMENICO, PACE, Vitalba, NITTI, P, SPISANI, RAFFAELLA, MACALUSO, Gabriella, G. MACALUSO, R. SPISANI, S. MORGANTI   +19 more
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4-[3-(Phenoxymethyl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thiadiazin-6-yl]-3-(p-tolyl)sydnone

Acta Crystallographica Section E, 2010
In the title triazolothiadiazine derivative, C20H16N6O3S {systematic name: 3-(4-methylphenyl)-4-[3-(phenoxymethyl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thiadiazin-6-yl]-1,2,3-oxadiazol-3-ium-5-olate}, an S(6) ring motif is generated by an intramolecular C&#
Jia Hao Goh, Hoong-Kun Fun, Nithinchandra, B. Kalluraya   +3 more
doaj   +1 more source

New potential biologically active compounds: Synthesis and characterization of urea and thiourea derivativpes bearing 1,2,4-oxadiazole ring

, 2020
Background: Urea, thiourea, and 1,2,4-oxadiazole compounds are of great interest due to their different activities such as anti-inflammatory, antiviral, analgesic, fungicidal, herbicidal, diuretic, antihelminthic and antitumor along with antimicrobial ...

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Tandem Reactions of 1,2,4-Oxadiazoles with Allylamines

, 2016
A reaction of 3-chloro-1,2,4-oxadiazoles with allylamine and diallylamine has been investigated. 3,3a,4,5-Tetrahydroisoxazolo[3,4-d]pyrimidines are produced through a tandem ANRORC/[3 + 2]cycloaddition pathway consisting of the addition of allylamine to ...
Antonio Palumbo Piccionello (564720), Andrea Pace (1309779), Silvestre Buscemi (2067370)   +2 more
core   +1 more source