Infrared Spectroscopic Study Dihydroquercetin and its New Substances with Benzoyl Chloride
А. К. Boshkayeva,
R. A. Omarova,
K. B. Zharimbetov,
G. S. Ibadullayeva,
E. M. Bissenbaev,
K. K. Zhaldybaev,
M. K. Iskakovа,
Samir Anis Ross,
A. S. Kozhamzharovа
Issue:
Volume 5, Issue 2-2, April 2016
Pages:
1-7
Received:
23 December 2015
Accepted:
25 December 2015
Published:
18 June 2016
Abstract: The study acylation reactions of dihydroquercetin apart from scientific interest has practical value. As a result of the reactions will form new organic compounds which may possess potential antioxidant, anti-inflammatory and cytotoxic activity [1]. Within this research studying of processes of acylation of a dihydroquercetin with use of benzoyl chloride and definition of chemical structure of new medicinal substances, as homogeneous samples of high degree of purity was the important and interesting point. One of the promising methods of studying the structure of drug substances is the method of IR spectroscopy. The method gives the chance to make an objective assessment of authenticity that allows to use actively it in the pharmaceutical analysis of many unknown connections [2-4]. It predetermined conduct of the compulsory registration of IR spectra for the original dihydroquercetin and synthesized on its basis of new substances with benzoyl chloride.
Abstract: The study acylation reactions of dihydroquercetin apart from scientific interest has practical value. As a result of the reactions will form new organic compounds which may possess potential antioxidant, anti-inflammatory and cytotoxic activity [1]. Within this research studying of processes of acylation of a dihydroquercetin with use of benzoyl ch...
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Quantum Chemical Modeling of Molecule 6-Aminopenicillanic Acid (6-Apa), of Model of 6-Apa-Phosgene and 6-Apa-Acetyl Chloride
А. К. Boshkayeva,
R. A. Omarova,
A. S. Kozhamzharovа,
А. D. Masakbayev,
L. Kiyekbayeva,
G. Ibadullayeva,
E. М. Bisenbaev,
Z. Olatayeva,
Zh. Muhametkan,
M. Kudaybergenova,
R. Abdykalykov
Issue:
Volume 5, Issue 2-2, April 2016
Pages:
8-10
Received:
17 February 2016
Accepted:
17 March 2016
Published:
2 August 2016
Abstract: For the first time a quantum-chemical method PM3 (Parametric Method 3) in semi empirical approach appreciated geometric and electronic parameters of the new acylated form the molecules 6-APA (6-aminopenicillanic acid), identified patterns of change according to the nature of the acylating agent. In general, the process of acylation of the molecule 6-APA by acylating agents (phosgene and acetyl chloride) leads to much larger changes in new systems of electronic structure than in its spatial structure. In this electronic structure analysis indicates that the acylation of 6-APA of the molecule both acylating agents leads to formation of more stable in the plan hydrolytic cleavage of form of this acid. This fact is a prediction of the characters and is positive for future synthesis of new antibiotics on the basis of 6-APA. Significant absolute value and the sign of the negative enthalpy of formation calculated by PM3, for both systems 6-APA-phosgene 6-APA-acetyl chloride indicate their high thermodynamic stability. The most stable in terms of the thermodynamic system is the 6-APA-acetyl chloride.
Abstract: For the first time a quantum-chemical method PM3 (Parametric Method 3) in semi empirical approach appreciated geometric and electronic parameters of the new acylated form the molecules 6-APA (6-aminopenicillanic acid), identified patterns of change according to the nature of the acylating agent. In general, the process of acylation of the molecule ...
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