Spectral and thermodynamic studies on Pr(III), Nd(III) and Sm(III) Chelates of 2-(N-2-hydroxybenzylideneimino) ethane sulphonic acid and 3-(alpha-2-oxopentylideneimino) propanoic acid schiff bases

1984 ◽  
Vol 326 (4) ◽  
pp. 689-694 ◽  
Author(s):  
Preeti Mehta ◽  
Sunita Bhatia ◽  
R. K. Mehta
Keyword(s):  
Schiff Bases ◽  
Sulphonic Acid ◽  
Propanoic Acid ◽  
Thermodynamic Studies

Kinetics of esterification of propanoic acid with methanol over a fibrous polymer-supported sulphonic acid catalyst

2002 ◽  
Vol 228 (1-2) ◽  
pp. 253-267 ◽  
Author(s):  
J. Lilja ◽  
J. Aumo ◽  
T. Salmi ◽  
D.Yu. Murzin ◽  
P. Mäki-Arvela ◽  
...  
Keyword(s):  
Acid Catalyst ◽  
Sulphonic Acid ◽  
Propanoic Acid ◽  
Fibrous Polymer ◽  
Polymer Supported ◽  
Kinetics Of

scholarly journals A Comparative Study on Biological Activity of Schiff bases Derived from 2-(2-amino)-3-(1H-indol-3-yl)propanoic acid

2020 ◽  
Vol 36 (04) ◽  
pp. 780-787
Author(s):  
Santhi Radhakrishnan ◽  
Rajeswari Balakrishnan ◽  
Ahalya Selvaraj
Keyword(s):  
Biological Activity ◽  
Comparative Study ◽  
Schiff Bases ◽  
Propanoic Acid

SYNTHESIS, CHARACTERIZATION AND BIOLOGICAL EVALUATION OF 3-FORMYL INDOLE BASED SCHIFF BASES

2018 ◽  
Vol 7 (6) ◽  
Author(s):  
Singh Gurvinder ◽  
Singh Prabhsimran ◽  
Dhawan R. K.
Keyword(s):  
Antimicrobial Activity ◽  
Spectral Analysis ◽  
Schiff Bases ◽  
Antimicrobial Agents ◽  
Biological Evaluation ◽  
Fungal Strain ◽  
Bacterial Strains ◽  
Standard Drug ◽  
Gram Negative ◽  
E Coli

In order to develop new antimicrobial agents, a series of 3-formyl indole based Schiff bases were synthesized by reacting 3-formyl indole(indole-3-carboxaldehyde) with substituted aniline taking ethanol as solvent. The reaction was carried in the presence of small amount of p-toluene sulphonic acid as catalyst.All the synthesized compounds were characterized by IR, 1H-NMR spectral analysis. All the synthesized compounds were evaluated for antimicrobial activity against two gram positive bacterial strains (B. subtilisand S. aureus) and two gram negative bacterial strains (P. aeruginosaand E. coli) and one fungal strain (C. albicans). All the synthesized compounds were found to have moderate to good antimicrobial activity. The  standard drug amoxicillin, fluconazole were used for antimicrobial activity. Among the synthesized compounds, the maximum antimicrobial activity was shown by compounds GS04, GS07, GS08 and GS10.

Protonation Studies of Schiff Bases Using 13C and 15N-NMR Spectroscopy

2006 ◽  
Author(s):  
Almudena Perona ◽  
Dionisia Sanz ◽  
Rosa Claramunt ◽  
Elena Pinilla ◽  
M. Torres ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Schiff Bases

CONFORMATIONAL ANALYSIS OF 3,3,3-TRIFLUORO-2-(TRIFLUOROMETHYL)PROPANOIC ACID

2017 ◽  
Author(s):  
Wei Lin ◽  
Yunjie Xu ◽  
Wolfgang Jäger ◽  
Elijah Schnitzler ◽  
Agapito Serrato III ◽  
...  
Keyword(s):  
Conformational Analysis ◽  
Propanoic Acid

IONIC EFFECTS ON THE UPTAKE OF CHLOROMERCURIBENZENE-p-SULPHONIC ACID BY PANCREATIC ISLETS

1977 ◽  
Vol 86 (3) ◽  
pp. 552-560 ◽  
Author(s):  
Monica Söderberg ◽  
Inge-Bert Täljedal
Keyword(s):  
Pancreatic Islets ◽  
Islet Cell ◽  
Choline Chloride ◽  
Inorganic Ions ◽  
Sulphonic Acid ◽  
Cell Uptake ◽  
Β Cells ◽  
Sulphydryl Groups ◽  
Microdissected Pancreatic Islets ◽  
Ionic Effects

ABSTRACT Effects of inorganic ions on the uptake of chloromercuribenzene-p-sulphonic acid (CMBS) were studied in microdissected pancreatic islets of non-inbred ob/ob-mice. Na2SO4 stimulated the total islet cell uptake of CMBS but decreased the amount of CMBS remaining in islets after brief washing with L-cysteine. CaCl2 stimulated both the total and the cysteine-non-displaceable uptake; the stimulatory effect of CaCl2 on the cysteine-non-displaceable CMBS uptake was counteracted by Na2SO4. NaCl, KCl or choline chloride had no significant effect on the total islet cell uptake of CMBS, whereas LiCl was stimulatory. It is concluded that β-cells resemble erythrocytes in having a permeation path for CMBS that is inhibited by SO42−. By analogy with existing models of the erythrocyte membrane, it is suggested that the SO42−-sensitive path leads to sulphydryl groups controlling monovalent cationic permeability in β-cells.

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