Conformation-reactivity relationship for pyridoxal Schiff's bases. Rates of racemization and α-hydrogen exchange of the pyridoxal Schiff's bases of amino acids

Biochemistry ◽  
1978 ◽  
Vol 17 (16) ◽  
pp. 3183-3188 ◽  
Author(s):  
Ming-Daw Tsai ◽  
Herschel J. R. Weintraub ◽  
Stephen R. Byrn ◽  
Ching-Jer Chang ◽  
Heinz G. Floss
Keyword(s):  
Amino Acids ◽  
Hydrogen Exchange ◽  
Schiff’S Bases ◽  
Schiff's Bases

Improved procedures for the synthesis of (S)-2-[N-(N′-benzylprolyl)amino]benzophenone (BPB) and Ni(II) complexes of Schiff's bases derived from BPB and amino acids

1998 ◽  
Vol 9 (23) ◽  
pp. 4249-4252 ◽  
Author(s):  
Yuri N. Belokon' ◽  
Vitali I. Tararov ◽  
Viktor I. Maleev ◽  
Tatiana F. Savel'eva ◽  
Michael G. Ryzhov
Keyword(s):  
Amino Acids ◽  
Schiff’S Bases ◽  
Schiff's Bases

New chiral NiII complexes of Schiff’s bases of glycine and alanine for efficient asymmetric synthesis of α-amino acids

2006 ◽  
Vol 17 (3) ◽  
pp. 455-467 ◽  
Author(s):  
Ashot S. Saghiyan ◽  
Slavik A. Dadayan ◽  
Satenik G. Petrosyan ◽  
Luisa L. Manasyan ◽  
Arpine V. Geolchanyan ◽  
...  
Keyword(s):  
Amino Acids ◽  
Asymmetric Synthesis ◽  
Schiff’S Bases ◽  
Schiff's Bases

Green Synthesis, Characterization, DPPH and Ferrous Ion-chelating (FIC) Activity of Tetrakis-Schiff’s Bases of Terephthalaldehyde

2019 ◽  
Vol 16 (3) ◽  
pp. 249-255
Author(s):  
Momin Khan ◽  
Umar Ali ◽  
Anis Ur Rahman ◽  
Muhammad Ibrahim ◽  
Abdul Hameed ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Aromatic Aldehydes ◽  
Ferrous Ion ◽  
Future Research ◽  
Scavenging Activity ◽  
Schiff’S Bases ◽  
Schiff's Bases ◽  
Antioxidant Agents

Background: The role of small molecules as antioxidants to prevent the oxidation of other molecules and inhibit them from radical formation is the area of much interest to cure disease especially cancer. Moreover, the antioxidants play important role as stabilizers to prevent oxidation of fuels and lubricants. </P><P> Methods: In the present study, fifteen tetrakis-Schiff’s bases derivatives (1-15) were synthesized and screened for their antioxidant activities. Compounds 1-15 were synthesized by continuous stirring of reaction mixture of 1,4-bis (hydrazonomethyl)benzene (1 mmol) with various substituted aromatic aldehydes (2 mmol) in distilled water using acetic acid as catalyst at room temperature for 2-10 min. </P><P> Results: Our present study showed that all compounds are better ferrous ion-chelating agents except compound 1,4-bis((E)-((E)-(3,4-dimethoxybenzylidene)hydrazono)methyl)benzene (6) (IC50 = 329.26 &#177; 4.75 &#181;M) which has slightly low activity than the standard EDTA (IC50 = 318.40 &#177; 5.53 μM). In addition, DPPH radical scavenging activity of eleven compounds showed higher activity than the standard. However, remaining four compounds showed comparable radical scavenging activity to the standard DPPH (IC50 = 257.77 &#177; 4.60 &#181;M). </P><P> Conclusion: The series of fifteen Schiff’s bases (1-15) were synthesized and evaluated as antioxidants. From both assays, it has been demonstrated that most of the tetrakis-Schiff’s bases have potential to serve as leads for the development of antioxidant agents for future research.

Synthesis of Schiff's bases Derived from 2- Amino - 1,3,4- Thiadiazole and 1,3,4- Oxadiazole with Naphthaldehydes

2006 ◽  
Vol 9 (1) ◽  
pp. 21-28
Author(s):  
Emaad . T. bakir Al-Takrity ◽  
◽  
Ibtisam K. Jassim ◽  
Wissam K. Jassim ◽  
◽  
...  
Keyword(s):  
Schiff’S Bases ◽  
Schiff's Bases
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