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Synthesis of new derivatives of Ceftazidime as possible Prodrugs
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Five new ceftazidime derivatives were designed and synthesized in an attempt to improve the acid stability and may increase the spectrum of ceftazidime. The synthesized compounds included;  Schiff base of ceftazidime (compound 1), ceftazidime lysine amide Schiff base (compound 2), ceftazidime lysine amide (compound 3), ceftazidime-di-lysine amide Schiff base (compound 4) and ceftazidime-di-lysine amide (compound 5). New ceftazidime derivatives were successfully prepared characterized and identified using spectral and elemental microanalysis (CHNS) analyses and the results comply with the calculated measurements.

Compounds 1 and 2 were subjected to a stability study in phosphate buffer (0.2M, pH 7.4) and in KCl/HCl buffer (0.2M, pH 1.2) at different time intervals (0 – 240 min) incubated at 37 °C. This revealed that both compounds in phosphate buffer (0.2M, pH 7.4) are significantly stable with t 1/2 of 18hrs and 24hrs respectively. However, compounds 1 and 2 are less stable in KCl/HCl buffer (0.2M, pH 1.2) with t1/2 of 3.48hrs and 3.13hrs respectively.

The antibacterial evaluation of the new ceftazidime derivatives showed various degrees of antibacterial activities when compared with ceftazidime. The chemical modifications of ceftazidime showed slight effect on activities and most of compounds retained the antibacterial activities. Compounds 2 and 4  afforded comparable antibacterial action. However, compounds 3 and 5 were equipotent with ceftazidime with respect to E.coli and Staph. aureose. Compound 4 has better activity than ceftazidime with respect to Pseudomonas  aeruginosa. Schiff's base derivative of lysine (2, 6-bis-(benzylideneamino) hexanoic acid) gave a reasonable antibacterial action towards Escherichia coli and Streptococcus Spp; as compared with lysine which has no antibacterial activity.

Key words: Ceftazidime, Schiff bases, Lysine.

 

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Publication Date
Thu Jan 01 2015
Journal Name
International Journal Of Technical Research And Applications
SYNTHESIS OF DRUG CARRIER POLYACRYLIC ACID WITH SPACER GROUP
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Publication Date
Sun Jun 09 2024
Journal Name
Academic Science Journal
Synthesis and Characterization of (Ni,Co)xMn0.25-xMg0.75Fe2O4 Nanoparticles
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   Ni-Co-Mn-Mg ferrite nanoparticles with the formula (Ni,Co)xMn0.25-xMg0.75Fe2O4 were synthesized in this work by employing the sol-gel auto-combustion process, with nitrates used as the cations source and citric acid (C6H8O7) as the combustion agent. X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray (EDX), and a vibrating sample magnetometer (VSM) were used to characterize the structural, morphological, and magnetic properties of ferrite powders. The XRD measurements showed crystallite sizes ranging between 24 - 28 nm. The FE-SEM images show the presence of agglomeration as well as a non-homogeneous distribution of the samples. On the other hand, the stoichiometry of the react

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Publication Date
Fri Apr 14 2023
Journal Name
Journal Of Medicinal And Chemical Sciences
Synthesis and Characterization of Heterocyclic Compounds-Based Liquid Crystals
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This research includes the synthesis, characterization, and investigation of liquid crystalline properties of new rod-shaped liquid crystal compounds 1,4- phenylene bis(2-(5-(four-alkoxybenzylidene)-2,4-dioxothiazolidin-3- yl)acetate), prepared thiazolidine-2,4-dione (I) by the thiourea reaction with chloroacetic acid and water in the presence of the concentrated hydrochloric acid. The n-alkoxy benzaldehyde (II)n synthesized from the reacted 4- hydreoxybenzaldehyde and n-alkyl bromide with potassium hydroxide, and then the compound (I) was reacted with (II)n in the presence of piperidine to produce compounds (III)n. Also, hydroquinone was converted into a corresponding compound (IV) by refluxing with two moles of chloracetyl chloride in pyr

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Publication Date
Wed Mar 01 2023
Journal Name
International Journal Of Research In Social Sciences And Humanities
The Role of Value Chain Analysis as well as Programs and Performance Budget in Reducing Waste of Public Money(Applied Study)
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Programs and performance budget represents a sophisticated method of public budget numbers, which includes all allocations to be determined for each job or activity within a government entity, which is analyzed according to their needs and costs, and this method can be applied using one of the cost accounting techniques, which is the technique of analyzing the value chain that reduces costs by avoiding activities that do not add value and enhance activities that add value to the economic entity, the current research aims to develop the budget system in government entity by using the budget of programs and performance as a tool for planning and monitoring events and activities, thereby reducing the waste of public money by reducing unnecessa

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Publication Date
Wed Mar 10 2021
Journal Name
Baghdad Science Journal
synthesis and studies of mixed-Ligand complexes of some transition Elements
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I've been in this work to prepare some complexes containing mixed Kandat with some transitional elements which new complexes according to the best of our knowledge and to refer to the information from the Internet until I have been studying this diagnosis Aalmakdat

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Publication Date
Mon Feb 15 2021
Journal Name
Systematic Review In Pharmacy
Colorimetric Determination Of Sitagliptin As An Oxidation Derivative Of Ninhydrin
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A sensitive and accurate colorimetric method was developed for the determination of the Sitagliptin phosphate monohydrate, here and after will be named Sitagliptin, in its pure and pharmaceutical form. The suggested approach is based on boosting the sensitivity of the traditional spectrometric methods by derivatizing Sitagliptin into a colored product that absorbs the visible spectrum at 573 nm. The proposed method has effectively improved the sensitivity and the limit of detection for the analysis of Sitagliptin. A linear calibration curve was obtained over the concentration range of 0.1-10 μg/ml with a correlation coefficient of 0.9983. The calculated recovery was within the range of 98.98–100.11%. While the limit of detection LOD and

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Publication Date
Sun Jan 01 2017
Journal Name
International Journal Of Economic Research
Credit derivatives: Do they matter to avoid credit exposure? (Some evidences from the US market)
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Credit derivatives (CDs) have been increasingly acknowledged as an important requirement to hedge and transfer credit risk CR. Nonetheless, they have been extensively criticized for destabilizing the whole economic system bringing about the latest subprime credit crisis. The study’s main aim is to investigate the reason for the use of (CDs), whether it is used for hedging or trade purpose, for four of the US international financial institutions that had made it through the 2007 crisis to resume functioning post-crisis. This will be for three different and critical periods, namely the pre, during and after crisis periods (Q1, 2000-Q1, 2014). Adopting the SUR technique, the investigation of the factors that influence the net position of (CD

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Scopus
Publication Date
Sat Oct 03 2020
Journal Name
International Journal Of Pharmaceutical Research
Serum Afamin As A Novel Biomarker for NonAlcoholic Fatty Liver Disease as A Complication of Hypothyroidism in Iraqi Patients.
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Afamin, which is a human plasma glycoprotein, a putative multifunctional transporter of hydrophobic molecules and a marker for metabolic syndrome. Afamin concentration have been proposed to have a significant role as a predictor of metabolic disorders. Since NAFLD is associated with metabolic risk factors, e.g., dyslipidemia, insulin resistance and visceral obesity, it is considered as the hepatic manifestation of the metabolic syndrome. The objective of this study is to determine Afamin levels in hypothyroid patients with and without fatty liver disease and compare the results with controls. Also to study the relationship of Afamin level with the Anthropometric and Clinical Features (Age, Gender, BMI and Duration of Hypothyroidism) , Serum

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Publication Date
Fri Jul 01 2011
Journal Name
Bulletin Of The Iraq Natural History Museum (p-issn: 1017-8678 , E-issn: 2311-9799)
A NEW SPECIES OF RHYNCOMYAROB.-DESVOIDY, 1830 (DIPTERA : CALLIPHORIDAE) FROM IRAQ
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This research includes a detaile description of new species Rhyncomya irakensis sp. nov.
from Iraq.
Localities distribution, host plants and data of collection were recorded.

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Publication Date
Wed Nov 01 2023
Journal Name
Iop Conference Series: Earth And Environmental Science
New Record with Revision of Nomiinae Bees (Hymenoptera: Halictidae) in Iraq
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Abstract<p>In this study the Sub family of Nomiinae Robertson,1904 (Hyminoptera: Halictidae) was revised There were five species registered in our investigation: <italic>Pseudapis edentata</italic>(Morawitz,1876), <italic>P. nilotica</italic> (Smith,1976), <italic>Nomiapes bispinosa</italic> (Bulle,1832), <italic>N. diversipes</italic> (Latreille,1806), <italic>N. fugax</italic> (Morawitz1877); the last species is newly recorded in Iraq. A Key to identify the genera and species was designed according to the important morphological characters; as well, a brief description of the new record species is provided.</p>
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