New phosphoramidates containing selenium as leishmanicidal agents

2021 ◽  
Author(s):  
Mikel Etxebeste-Mitxeltorena ◽  
Daniel Plano ◽  
Socorro Espuelas ◽  
Esther Moreno ◽  
Carlos Aydillo ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Elemental Analysis ◽  
Theoretical Calculations ◽  
Redox System ◽  
New Agents ◽  
Analysis Techniques ◽  
Physico Chemical ◽  
Pharmacokinetic Properties ◽  
New Compounds

This work reports the synthesis, characterization by FTIR, 1 H, 13 C and 79 Se NMR, mass spectrometry and elemental analysis techniques as well as the in vitro evaluation of the leishmanicidal activity of thirteen new selenophosphoramidate derivatives. Among the new compounds, four of them (compounds 1f, 1g, 2f and 2g), which exhibited the best profile, were tested against infected macrophages and were selected for further studies related their leishmanicidal mechanism. In this regard, trypanothione redox-system alteration was determined. Compound 1g, under similar conditions, was more effective than the corresponding references. In addition, theoretical calculations showed that this compound also presents most physico-chemical and pharmacokinetic properties within the ranges expected for orally available drugs. It is believed that selenophophoramidate functionalities may represent a scaffold to be explored toward the development of new agents for leishmania treatment.

scholarly journals 4-vinylpyridine derivatives: Protonation, methylation and silver(I) coordination chemistry

2021 ◽  
pp. 174751982198965
Author(s):  
Guoqi Zhang
Keyword(s):  
Mass Spectrometry ◽  
Schiff Base ◽  
Coordination Chemistry ◽  
Elemental Analysis ◽  
Silver Complex ◽  
Spectroscopic Techniques ◽  
X Ray ◽  
X Ray Crystallography ◽  
Pyridine Moiety ◽  
New Compounds

( E)-4-[2-(Pyridin-4-yl)vinyl]benzaldehyde, containing both a 4-vinylpyridine and an aldehyde functionality, is utilized to develop new, highly conjugated chalcone compounds and a bis-Schiff base azine compound. The chalcone-containing compounds are further explored for their protonation, methylation and silver(I) coordination chemistry using the pyridine moiety. In parallel, a cyano-containing analogue, ( E)-4-[2-(pyridin-4-yl)vinyl]benzonitrile is also synthesized and studied for its silver(I) coordination chemistry. These new compounds are fully characterized by mass spectrometry, elemental analysis and spectroscopic techniques. The methylated product of ( E)-1-(9-anthryl)-3-{4-[2-(pyridin-4-yl)vinyl]phenyl}prop-2-en-1-one and a silver complex of ( E)-4-[2-(pyridin-4-yl)vinyl]benzonitrile are structurally determined by X-ray crystallography.

2-Hydroxypropyl derivatives of 1,2,3-thiadiazole and 1,2,3-triazole: Synthesis and antifungal activity

2011 ◽  
Vol 83 (3) ◽  
pp. 715-722 ◽  
Author(s):  
Yury Morzherin ◽  
Polina E. Prokhorova ◽  
Dmitry A. Musikhin ◽  
Tatiana V. Glukhareva ◽  
Zhijin Fan
Keyword(s):  
Mass Spectrometry ◽  
Antifungal Activity ◽  
Ir Spectroscopy ◽  
Elemental Analysis ◽  
Antifungal Activities ◽  
Triazole Derivatives ◽  
New Compounds ◽  
Derivatives Of

A series of novel 5-(2-hydroxypropyl)amino-1,2,3-thiadiazole and 5-(2-hydroxy-propyl)sulfanyl-1,2,3-triazole derivatives were designed and synthesized as candidate fungicides. The new compounds were identified by NMR and IR spectroscopy, mass spectrometry, and elemental analysis. Their antifungal activities were evaluated.

scholarly journals SOD-Mimic Cu(II) Dimeric Complexes Involving Kinetin and Its Derivative: Preparation and Characterization

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Radka Novotná ◽  
Zdeněk Trávníček ◽  
Radovan Herchel
Keyword(s):  
Mass Spectrometry ◽  
Magnetic Susceptibility ◽  
Temperature Dependence ◽  
Elemental Analysis ◽  
Antiradical Activity ◽  
Electronic Spectroscopy ◽  
Antiferromagnetic Exchange ◽  
Dimeric Complexes ◽  
Esi Mass Spectrometry

Two SOD-mimic active dimeric Cu(II) chlorido complexes of the compositions [Cu2(μ-HL1)4Cl2]Cl2(1) and [Cu2(μ-HL2)2(μ-Cl)2(HL2)2Cl2] · 4H2O (2) involving the cosmetologically relevant cytokinin kinetin (N6-furfuryladenine, HL1) and its derivative N6-(5-methylfurfuryl)adenine (HL2) have been synthesized and characterized by elemental analysis, infrared, and electronic spectroscopy, ESI+ mass spectrometry, conductivity and temperature dependence of magnetic susceptibility measurements, and thermogravimetric (TG) and differential thermal (DTA) analyses. The results of these methods, particularly the temperature dependence of magnetic susceptibility, showed the complexes to be dimeric with a strong antiferromagnetic exchange (J= −290 cm−1for complex1andJ= −160 cm−1for2). The complexes have been identified as auspicious SOD-mimics, as their antiradical activity evaluated by thein vitroSOD-mimic assay resulted in the IC50values equal to 8.13 μM (1) and 0.71 μM (2).

scholarly journals Synthesis, In Silico and In Vitro Evaluation of Antimicrobial and Toxicity Features of New 4-[(4-Chlorophenyl)sulfonyl]benzoic Acid Derivatives

Molecules ◽  
2021 ◽  
Vol 26 (16) ◽  
pp. 5107
Author(s):  
Theodora-Venera Apostol ◽  
Mariana Carmen Chifiriuc ◽  
Constantin Draghici ◽  
Laura-Ileana Socea ◽  
Luminita Gabriela Marutescu ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
In Silico ◽  
Chemical Characterization ◽  
Phenyl Group ◽  
Bacterial Strains ◽  
Benzoic Acid Derivatives ◽  
Physico Chemical ◽  
In Silico Studies ◽  
New Compounds

The multi-step synthesis, physico-chemical characterization, and biological activity of novel valine-derived compounds, i.e., N-acyl-α-amino acids, 1,3-oxazol-5(4H)-ones, N-acyl-α-amino ketones, and 1,3-oxazoles derivatives, bearing a 4-[(4-chlorophenyl)sulfonyl]phenyl moiety are reported here. The structures of the newly synthesized compounds were confirmed by spectral (UV-Vis, FT-IR, MS, 1H- and 13C-NMR) data and elemental analysis results, and their purity was determined by RP-HPLC. The new compounds were assessed for their antimicrobial activity and toxicity to aquatic crustacean Daphnia magna. Also, in silico studies regarding their potential mechanism of action and toxicity were performed. The antimicrobial evaluation revealed that the 2-{4-[(4-chlorophenyl)sulfonyl]benzamido}-3-methylbutanoic acid and the corresponding 1,3-oxazol-5(4H)-one exhibited antimicrobial activity against Gram-positive bacterial strains and the new 1,3-oxazole containing a phenyl group at 5-position against the C. albicans strain.

scholarly journals Synthesis and Cytotoxic Activity of New Vindoline Derivatives Coupled to Natural and Synthetic Pharmacophores

Molecules ◽  
2020 ◽  
Vol 25 (4) ◽  
pp. 1010 ◽  
Author(s):  
András Keglevich ◽  
Leonetta Dányi ◽  
Alexandra Rieder ◽  
Dorottya Horváth ◽  
Áron Szigetvári ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gynecological Cancer ◽  
Vinca Alkaloid ◽  
Structural Units ◽  
Triazole Derivative ◽  
Micromolar Concentration ◽  
Ic50 Values ◽  
Natural Alkaloid ◽  
New Compounds

New Vinca alkaloid derivatives were synthesized to improve the biological activity of the natural alkaloid vindoline. To this end, experiments were performed to link vindoline with various structural units, such as amino acids, a 1,2,3-triazole derivative, morpholine, piperazine and N-methylpiperazine. The structure of the new compounds was characterized by NMR spectroscopy and mass spectrometry (MS). Several compounds exhibited in vitro antiproliferative activity against human gynecological cancer cell lines with IC50 values in the low micromolar concentration range.

New bis-pyrazolylpyridine ruthenium(III) complex as a potential anticancer drug: In vitro and in vivo activity in murine colon cancer

2021 ◽  
Author(s):  
Dejan Lazić ◽  
Andreas Scheurer ◽  
Dusan Cocic ◽  
Jelena Z Milovanović ◽  
Aleksandar Arsenijević ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Colon Cancer ◽  
Anticancer Drug ◽  
Elemental Analysis ◽  
Tert Butyl ◽  
Type Complex ◽  
Vis Spectroscopy ◽  
Murine Colon

We synthesized and characterized the ruthenium(III) pincer-type complex [RuCl3(H2Lt-Bu] (H2Lt-Bu = 2,6-bis(5-tert-butyl-1H-pyrazol-3-yl)pyridine, 1) by elemental analysis, IR and UV-Vis spectroscopy, and mass spectrometry (MS) method ESI Q-TOF. For comparison reason,...

EXTRACTION, ISOLATION, CHARACTERIZATION, SEMISYNTHESIS AND BIOLOGICAL EVALUATION OF BERBERINE FROM ROOTS OF BERBERIS ARISTATA

INDIAN DRUGS ◽  
2013 ◽  
Vol 50 (09) ◽  
pp. 18-24
Author(s):  
J Mittal ◽  
◽  
K. Chaudhary ◽  
N Kumar ◽  
D Pathak
Keyword(s):  
Mass Spectrometry ◽  
Elemental Analysis ◽  
Biological Evaluation ◽  
Diffusion Method ◽  
Significant Activity ◽  
Bacterial Strains ◽  
Percolation Method ◽  
Acetophenone Derivatives ◽  
Antibacterial And Antifungal

A methanolic extract of roots of Berberis aristata was prepared by using hot percolation method. Berberine was isolated from the above extract and characterized by IR, 1HNMR, mass spectrometry and elemental analysis. A series of 8-(substituted acetophenone) berberine derivatives was synthesized by introducing various acetophenone derivatives at 8th position of berberine and analyzed by melting point and TLC. The structures of all the synthesized compounds were characterized by IR, 1HNMR, mass spectrometry and elemental analysis. The semisynthesized compounds were screened for in vitro antibacterial and antifungal activity using disc (5mm) diffusion method on nutrient agar medium against Gram-positive (Staphylococcus aureus and Bacillus subtilis), Gram-negative bacterial strains (Pseudomonas aeruginosa and Escherichia coli) and fungal strains (Aspergillus niger and Candida albicans) respectively. The zone of inhibition was compared with standard drugs berberine and kanamycin. All the above compounds showed significant activity in comparison to the standards berberine and kanamycin.

Synthesis, Characterization and Evaluation of Azetidinylquinolines and Thiazolidinylquinolines as Antibacterial Agents

2014 ◽  
Vol 7 (3) ◽  
pp. 2536-2543
Author(s):  
Shalabh Sharma ◽  
Kuldeep K Saxena
Keyword(s):  
Antibacterial Activity ◽  
Spectral Data ◽  
1H Nmr ◽  
Elemental Analysis ◽  
Antibacterial Agents ◽  
Mass Spectral Data ◽  
Standard Drug ◽  
Mass Spectral ◽  
New Compounds

Several molecules were synthesized like 8-ethoxy-4-methyl-2-amino-(3’-chloro-2’-oxo-4’-substitutedaryl-1’-azeti-dinyl)-quinolines 8-12 and 8-ethoxy-4-methyl-2-amino-(2’-substitutedaryl-4’-oxo-1’,3’-thiazolidin-3’-yl)quinolines 13-17 from 8-ethoxy-4-methyl-2-(substitutedarylidenylimino amino)-quinolines 3-7, and screened to evaluate their antibacterial activity against numerous strains of bacteria        in vitro. The structures of new compounds were established on the basis of their elemental analysis, IR, 1H-NMR and mass spectral data. The results showed that three compounds 10, 11 and 16 were found to exhibit promising antibacterial activity as compared to the standard drug amphicillin.   

Synthesis of Thienyl-Isoxazolines and in vitro Screening for their Antimicrobial Activity

2020 ◽  
Vol 5 (3) ◽  
pp. 208-212
Author(s):  
C.B. Vagish ◽  
N. Renuka ◽  
K. Ajay Kumar ◽  
H.P. Jayadevappa
Keyword(s):  
Antimicrobial Activity ◽  
Heterogeneous Catalyst ◽  
Aromatic Ring ◽  
Elemental Analysis ◽  
In Vitro Screening ◽  
Amberlyst 15 ◽  
Recyclable Heterogeneous Catalyst ◽  
New Compounds

A series of thiophene conjugated isoxazoles were efficiently synthesized using a recyclable heterogeneous catalyst Amberlyst-15 in good yields. The synthesized new compounds 5(a-j) were characterized by spectral and elemental analysis and screened in vitro for their antimicrobial potencies. Amongst the synthesized series; compounds 5c and 5j having chloro substitution on both thiophene and aromatic ring exhibited excellent inhibition against the tested species

Über die Reaktionen von Phosphanen MenP[OCH(CF3)2]3-n mit Hexafluoraceton / Reactions of Phosphanes MenP[OCH(CF3)2]3-n with Hexafluoroacetone

1978 ◽  
Vol 33 (2) ◽  
pp. 131-135 ◽  
Author(s):  
Gerd-Volker Röschenthaler
Keyword(s):  
Mass Spectrometry ◽  
Elemental Analysis ◽  
Analogous Reaction ◽  
New Compounds

The stable phosphanes Me2POCH(CF3)2 and MeP[OCH(CF3)2]2 have been prepared and reacted with hexafluoroacetone yielding 1,2-oxaphosphetanes. The analogous reaction with Me2PF was carried out giving a 1 : 1 : 1 mixture of a 1,3,2-, a 1,3,4-dioxaphospholane, and a 1,2-oxaphosphetane. P[OCH(CF3)2]3 did not react with hexafluoroacetone. The new compounds were characterized by NMR, mass spectrometry and elemental analysis

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