scholarly journals Synthesis and characterization of new 2-amino-4-(substituted phenyl)-6-(7’’-methoxy, 3’’,4’’-dihydro, 2’’,2’’-dimethyl-2hbenzopyran) pyrimidines and their bio evaluation

2012 ◽  
Vol 77 (7) ◽  
pp. 859-866
Author(s):  
Y.L.N. Murthy ◽  
Padma Suhasini ◽  
Jha Anjali
Keyword(s):  
Bacillus Pumilus ◽  
Antimicrobial Properties ◽  
Spectroscopic Techniques ◽  
Gram Negative Bacteria ◽  
Antibacterial And Antifungal Activities ◽  
Ft Ir ◽  
Inhibition Zones ◽  
Antibacterial And Antifungal ◽  
Ir Spectroscopic

A series of eight novel 2-amino-4-(substituted phenyl)-6-(7"- methoxy, 3",4"-dihydro, 2",2"-dimethyl-2H-benzopyran) pyrimidines were designed and synthesized by utilizing benzene-1,3-diol as starting material. The structures of the isolated products (6a-h) were established through 1HNMR, 13C-NMR, and FT-IR spectroscopic techniques and elemental analysis. The synthesized compounds were utilized for screening antimicrobial properties against gram positive (Bacillus pumilus, Bacillus subtilis, Streptococcus faecalis), gram negative bacteria (Enterococcus faecalis, Escheria coli, Proteus vulgaris) and fungi (Pencillian expasom, Aspergillus niger, Candida albicans) using Ampicillin and Ketoconazole. Most of the compounds showed moderate to high antibacterial and antifungal activities against studied strains with inhibition zones between 8 and 30 mm.

Steroid Compounds Isolation from Carthamus tinctorius Linn as Antimalarial

2021 ◽  
pp. 5297-5304
Author(s):  
Rini Hamsidi ◽  
Wahyuni Wahyuni ◽  
Adryan Fristiohady ◽  
Muhammad Hajrul Malaka ◽  
Idin Sahidin ◽  
...  
Keyword(s):  
Antimalarial Activity ◽  
Carthamus Tinctorius ◽  
Spectroscopic Techniques ◽  
1H And 13C Nmr ◽  
Marker Compound ◽  
Ic50 Value ◽  
Ft Ir ◽  
Ir Spectroscopic

Carthamus tinctorius Linn, also known as safflower, is a plant with the potential of being used in the production of antimalarial drugs. The purpose of this study was to isolate and identify the steroid compounds in the safflower and determine its antimalarial activity in vitro. The isolation process was conducted through extraction and chromatography methods. Then, the characterization of the isolated compounds was conducted through spectroscopic techniques which include Fourier Transform Infrared Spectroscopy (FT-IR), NMR 1-D (1H and 13C-NMR), and NMR 2-D (HMQC, HMBC, and H-H COZY) as well as comparing data with the existing literatures. In addition, the tests conducted were with variations of isolate concentrations (10, 1, 0.1, 0.01, and 0.001 μg/mL) against 3D7 strain of Plasmodium falciparum. Based on the FT-IR spectroscopic data, the steroid compounds isolated from safflowers might be stigmasterols. In addition, the isolates had -OH functional group in the region of 3431 cm-1, C-O in the region of 1053 cm-1, and Csp3-H in regions of 2960, 2934, and 2865 cm-1. The NMR 1-D data showed presence of 29 carbon atoms, while the protons were 48 in number. Furthermore, the IC50 value of the compound was 34.03 μg/mL with a percentage inhibition of 43.92% against the growth of P. falciparum. Therefore, it was classified as inactive agent in inhibiting the growth of malaria parasites, however, it could be used as a marker compound in C. tinctorius Linn extract.

scholarly journals Preparation and Characterization of Cu (II), Mn(II) and Zn(II)complexes with new sulfamethoxazole Compounds

2017 ◽  
Vol 14 (3) ◽  
pp. 575-581
Author(s):  
Baghdad Science Journal
Keyword(s):  
Magnetic Susceptibility ◽  
Melting Point ◽  
Metal Complexes ◽  
Atomic Absorption ◽  
Spectroscopic Methods ◽  
Aqueous Alcohol ◽  
Spectroscopic Techniques ◽  
Ft Ir ◽  
Ir Spectroscopic

Acetophenone sulfamethoxazole and 3-Nitrobenzophenone sulfamethoxazole were prepared from the reaction of sulfamethoxazole with two ketones. The prepared ligands were identified by (C.H.N) analysis and UV-VIS, FT-IR spectroscopic techniques. Metal complexes of the two ligands were prepared in an aqueous alcohol with Zn (II), Mn (II) and Cu (II) ions with a molar ratio1:1. The proposed general formula for the resulting complexes was [ML.CL2.H2O]H2O .The complexes were characterized by (C.H.N) technique , spectroscopic methods ,conductivity, atomic absorption ,magnetic susceptibility measurements and melting point. According to the results obtained, the suggested geometry is to be octahedral for all the complexes.

scholarly journals Adsorption of Nitrate Ions onto Sepiolite and Surfactant-Modified Sepiolite

2005 ◽  
Vol 23 (4) ◽  
pp. 323-334 ◽  
Author(s):  
Adnan Özcan ◽  
Mutlu Şahin ◽  
Asiye Safa Özcan
Keyword(s):  
Surface Characterization ◽  
Ph Value ◽  
Spectroscopic Techniques ◽  
Nitrate Ions ◽  
Adsorption Data ◽  
Freundlich Adsorption Isotherm ◽  
Pseudo Second Order ◽  
Ft Ir ◽  
Ir Spectroscopic

The adsorption of nitrate ions onto clay minerals has not been given much attention, possibly because clay surfaces are negatively charged. In order to increase the positive charge on the surface, sepiolite was modified in the present studies by treatment with dodecylethyldimethylammonium (DEDMA) bromide. After such modification, it was found that the maximum amount of nitrate ion adsorbed occurred at a pH value of 2.0. The chemical composition of natural sepiolite was determined by EDX methods and surface characterization of both natural and modified sepiolite samples was undertaken using FT-IR spectroscopic techniques. The adsorption of nitrate ions onto these adsorbents was determined by ion chromatography. The kinetic parameters of the adsorption process were calculated and it was shown that the reaction kinetic data could be fitted using the pseudo-second-order rate model. The calculated results indicate that both natural and surfactant-modified sepiolite are effective sorbents for the removal of anionic contaminants; however, the surfactant-modified sepiolite (453 mmol/kg) was more effective than the unmodified sepiolite (408 mmol/kg) in this respect. The adsorption data obtained were well described by the Freundlich adsorption isotherm.

scholarly journals Synthesis and Characterization of Some New Tropylidene Derivatives and Studying their Biological Activities

2021 ◽  
pp. 3307-3322
Author(s):  
Muath Jabbar Tarfa Al-Abbasee ◽  
Ahmood khalaf Jebur ◽  
Afraa Sabir Shihab
Keyword(s):  
Melting Point ◽  
Biological Activities ◽  
Chemical Properties ◽  
Synthesis And Characterization ◽  
Antibacterial And Antifungal Activities ◽  
Ft Ir ◽  
Antibacterial And Antifungal ◽  
And Chemical Properties

    Some new tropylidene derivatives were prepared in this work and their in vitro antibacterial and antifungal activities were studied. All the prepared compounds were characterized by their physical properties, such as melting point and color, and chemical properties, using the techniques of FT-IR, 1H-NMR and 13C-NMR.

Spectral Investigation on the Growth and Characterization of NLO Crystals of Thiourea Succinic Acid Single Crystal.

2015 ◽  
Vol 2 (2) ◽  
pp. 70-73
Author(s):  
Kannan.P ◽  
Thambidurai.S ◽  
Suresh.N
Keyword(s):  
Single Crystal ◽  
Succinic Acid ◽  
Slow Evaporation Technique ◽  
Absorption Studies ◽  
Dta Analysis ◽  
Evaporation Technique ◽  
Ft Ir ◽  
Ir Spectroscopic ◽  
Thermal Stability Of

Growth of optically transparent single crystals of thiourea succinic acid (TUSA) was grown successfully from aqueous solution by slow evaporation technique. The crystal structure was elucidated using the single crystal XRD. The various functional groups and the modes of vibrations were identified by FT-IR spectroscopic analysis. The optical absorption studies indicate that the optical transparency window is quite wide making its suitable for NLO applications. Thermal stability of the crown crystal carried out by TGA-DTA analysis.

scholarly journals Synthesis and antimicrobial activities of some (E)-N'-1-(substituted benzylidene)benzohydrazides

2017 ◽  
Vol 5 (1) ◽  
pp. 17 ◽  
Author(s):  
V. Manikandan ◽  
S. Balaji ◽  
R. Senbagam ◽  
R. Vijayakumar ◽  
M. Rajarajan ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fourier Transform ◽  
Magnetic Resonance ◽  
Spectral Data ◽  
Ultra Violet ◽  
Antimicrobial Activities ◽  
Antibacterial And Antifungal Activities ◽  
Ft Ir ◽  
Fourier Transform Ir ◽  
Antibacterial And Antifungal

About ten substituted (E)-N'-1-(substituted benzylidene) benzohydrazides have been synthesized. They are analyzed by their analytical, ultra violet (UV), Fourier transform-IR (FT-IR) and nuclear magnetic resonance (NMR) spectral data and evaluated by antimicrobial activities such antibacterial and antifungal activities.

scholarly journals Massive Gene Expansion and Sequence Diversification Is Associated with Diverse Tissue Distribution, Regulation and Antimicrobial Properties of Anti-Lipopolysaccharide Factors in Shrimp

Marine Drugs ◽  
2018 ◽  
Vol 16 (10) ◽  
pp. 381 ◽  
Author(s):  
Gabriel Matos ◽  
Paulina Schmitt ◽  
Cairé Barreto ◽  
Natanael Farias ◽  
Guilherme Toledo-Silva ◽  
...  
Keyword(s):  
Tissue Distribution ◽  
Phylogenetic Analyses ◽  
Antimicrobial Properties ◽  
Tissue Expression ◽  
Gene Organization ◽  
Gene Expansion ◽  
Antibacterial And Antifungal Activities ◽  
Conserved Gene ◽  
And Function ◽  
Antibacterial And Antifungal

Anti-lipopolysaccharide factors (ALFs) are antimicrobial peptides with a central β-hairpin structure able to bind to microbial components. Mining sequence databases for ALFs allowed us to show the remarkable diversity of ALF sequences in shrimp. We found at least seven members of the ALF family (Groups A to G), including two novel Groups (F and G), all of which are encoded by different loci with conserved gene organization. Phylogenetic analyses revealed that gene expansion and subsequent diversification of the ALF family occurred in crustaceans before shrimp speciation occurred. The transcriptional profile of ALFs was compared in terms of tissue distribution, response to two pathogens and during shrimp development in Litopenaeus vannamei, the most cultivated species. ALFs were found to be constitutively expressed in hemocytes and to respond differently to tissue damage. While synthetic β-hairpins of Groups E and G displayed both antibacterial and antifungal activities, no activity was recorded for Group F β-hairpins. Altogether, our results showed that ALFs form a family of shrimp AMPs that has been the subject of intense diversification. The different genes differ in terms of tissue expression, regulation and function. These data strongly suggest that multiple selection pressures have led to functional diversification of ALFs in shrimp.

scholarly journals Synthesis and Bioassay of Novel Quinozolins

2019 ◽  
Vol 17 (72) ◽  
pp. 129-138
Author(s):  
Yasmine Kadom. Al-Majedy
Keyword(s):  
Twist Angle ◽  
Antimicrobial Properties ◽  
Heat Of Formation ◽  
Gram Negative Bacteria ◽  
The Novel ◽  
Gram Positive Bacteria ◽  
Visible Spectra ◽  
Ft Ir ◽  
Uv Visible

Novel Quinozolins were synthesized in a good yield through convert lacton to lactam and study the biological activity of the synthesized compounds. Quinozolins were characterized by elemental analysis, FT-IR and UV/visible spectra. The novel Quinozolins have been tested in vitro against (gram positive bacteria Staphylococcus aureus and against other gram negative bacteria, such as Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, and Proteus vulgaris; in order to assess their antimicrobial properties. Moreover, charge, bond length, bond angle, twist angle, heat of formation and steric energy were calculated by using of the ChemOffice program. The study indicates that these Quinozolins have high activity against tested bacteria. Based on the reported results, it may be concluded that the coumarin act as synthons for synthesis of new Quinozolins derivatives through the replacement of oxygen atom by nitrogen atom.

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