Branched Polyamines Functionalized with Proposed Reaction Pathways Based on &amp;lt;sup&amp;gt;1&amp;lt;/sup&amp;gt;H-NMR, Atomic Absorption and IR Spectroscopies

Cervantes-Mejía, Vicente; Baca-Solis, Elizabeth; Caballero-Jiménez, Judith; Merino-García, Rosario; Cruz-Gatica, Jesús; Moreno-Martínez, Gabriela; Reyes‐Ortega, Yasmi

doi:10.4236/ajac.2014.516116

Cited by 2 publications

(1 citation statement)

References 31 publications

(31 reference statements)

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“…The synthesis of compounds 1-3 was based on previous articles; nevertheless, variations in the reaction conditions were necessary. [21][22][23][24] The ei/ka tautomeric equilibrium of aromatic Schiff bases can be observed via UV-Vis, IR and NMR spectroscopy. UV-Vis spectra of 1-3 showed the tautomers' transitions that were assigned with the help of TDDFT simulations.…”

Section: Synthesis Of 1-3mentioning

confidence: 99%

Tautomeric Study of Schiff Bases Derived from o‐Dihydroxybenzaldehyde by UV‐Vis, IR, ¹H NMR, ¹³C NMR Spectroscopy and Computational Modeling.

et al. 2020

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Tautomeric equilibria at room temperature were studied for three aromatic imine polyol compounds, previously reported 2-((2-hydroxybenzylidene)amino)-2-(hydroxymethyl)propane-1,3diol 1 and two new compounds 2-(((1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)imino)methyl)benzene-1,4-diol 2 and 3-(((1,3-dihydroxy-2-(hydroxymethyl)propan-2 yl)imino) methyl)benzene-1,2-diol 3. The dynamic behavior of these equilibria is described by a combination of IR, UV-Vis and NMR spectroscopic measurements with DFT and TDDFT calculations in condensed phase. Among the different approaches, the combination of UV-Vis experimental spectra with the oscillator strengths values estimated from TDDFT calculations allowed for the assessment of the tautomeric populations in DMSO and methanol. These results were consistent with different functionals employed GGA, Hybrid and MetaGGA.

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Section: Synthesis Of 1-3mentioning

confidence: 99%

Tautomeric Study of Schiff Bases Derived from o‐Dihydroxybenzaldehyde by UV‐Vis, IR, ¹H NMR, ¹³C NMR Spectroscopy and Computational Modeling.

et al. 2020

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Impact of heavy metal lead stress on polyamine levels in Halomonas BVR 1 isolated from an industry effluent

Manasi

Mohapatra

Rajesh

et al. 2017

Sci Rep

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In living systems, environmental stress due to biotic and abiotic factors triggers the production of myriad metabolites as a potential mechanism for combating stress. Among these metabolites are the small polycationic aliphatic amine molecules - polyamines, which are ubiquitous in all living organisms. In this work, we demonstrate a correlation between cellular concentration of three major polyamines (putrescine, spermidine and spermine) with lead exposure on bacteria for a period of 6–24 h. We report that indigenously isolated Halomonas sp. strain BVR 1 exhibits lead induced fluctuations in their cellular polyamine concentration. This response to lead occurs within 6 h post metal treatment. During the same time interval there was a surge in the growth of bacteria along with an enhancement in the putrescine levels. We conclude that in Halomonas sp. strain BVR 1, an early response is seen with respect to modulation of polyamines as a result of lead treatment and hypothesize that endogenous polyamines contribute towards scavenging lead in these bacteria.

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Branched Polyamines Functionalized with Proposed Reaction Pathways Based on <sup>1</sup>H-NMR, Atomic Absorption and IR Spectroscopies

Abstract: Abstract

Cited by 2 publications

References 31 publications

Tautomeric Study of Schiff Bases Derived from o‐Dihydroxybenzaldehyde by UV‐Vis, IR, ¹H NMR, ¹³C NMR Spectroscopy and Computational Modeling.

Tautomeric Study of Schiff Bases Derived from o‐Dihydroxybenzaldehyde by UV‐Vis, IR, ¹H NMR, ¹³C NMR Spectroscopy and Computational Modeling.

Impact of heavy metal lead stress on polyamine levels in Halomonas BVR 1 isolated from an industry effluent

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Branched Polyamines Functionalized with Proposed Reaction Pathways Based on &lt;sup&gt;1&lt;/sup&gt;H-NMR, Atomic Absorption and IR Spectroscopies

Abstract: Abstract

Cited by 2 publications

References 31 publications

Tautomeric Study of Schiff Bases Derived from o‐Dihydroxybenzaldehyde by UV‐Vis, IR, 1H NMR, 13C NMR Spectroscopy and Computational Modeling.

Tautomeric Study of Schiff Bases Derived from o‐Dihydroxybenzaldehyde by UV‐Vis, IR, 1H NMR, 13C NMR Spectroscopy and Computational Modeling.

Impact of heavy metal lead stress on polyamine levels in Halomonas BVR 1 isolated from an industry effluent

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Product

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Branched Polyamines Functionalized with Proposed Reaction Pathways Based on <sup>1</sup>H-NMR, Atomic Absorption and IR Spectroscopies

Tautomeric Study of Schiff Bases Derived from o‐Dihydroxybenzaldehyde by UV‐Vis, IR, ¹H NMR, ¹³C NMR Spectroscopy and Computational Modeling.

Tautomeric Study of Schiff Bases Derived from o‐Dihydroxybenzaldehyde by UV‐Vis, IR, ¹H NMR, ¹³C NMR Spectroscopy and Computational Modeling.