Bioorganic & Medicinal Chemistry Reports

A scientific open acces journal in the field of Bioorganic and Medicinal Chemistry
Editor in Chief: Oztekin Algul
Managing Editor: Ahmet C Goren

LATEST ARTICLES

Communication

Analyzing of some drugable properties of hydrazono-pyridazinones

Bioorg. Med. Chem. Rep. (2018) 1:1 ; 29 - 36
by Burak Kuzu and Nurettin Mengeş

Some pyridazinones with ortho hydroxy hydrazone were investigated using DFT/B3LYP 6-311 G(d,p) method. Optimized molecules were taken account for NBO analysis by using DFT/B3LYP 6-311+G(d,p) method and information gained NBO analysis gave some important point for predicton of polarization of atoms. Furthermore, electrostaticpotential surfaces (MEP)  were calculated and visualized in order to predict charge distribution as well as the shape/volume of the surface of the pyridazinones. HOMO-LUMO orbitals were computed and with these information hardness, electronegativity and global electronegativity index were calculated. For aromaticity of pyridazinone ring HOMA, BIRD and NICS indexes were calculated and aromaticity indexes revealed that which heterocyclic ring was the most aromatic and stable against metabolization effect of enzymes. Electron density map with projection for 2 was plotted and its localization of electron density was discussed. Lipinski’s rule of five was calculated for investigated molecules for prediction of oral uptake and drug candidates.

DOI
http://doi.org/10.25135/bmcr.10.18.12.1104
Keywords
Pyridazinone aromaticity NBO Analysis physicochemical properties drug design
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© 2018 ACG Publications. All rights reserved.
Original Article

Electrochemical studies of regorafenib in non-aqueous media

Bioorg. Med. Chem. Rep. (2018) 1:1 ; 22 - 28
by Züleyha Kudaş

A novel tyrosine kinase inhibitor, regorafenib was electrochemically studied using a GC disc electrode in non-aqueous media. A well-resolved, irreversible, diffusion-controlled oxidation peak was obtained at 1.55 V in acetonitrile solution containing 0.1 M TBAClO4. Experimental conditions such as scan rate, indicate that two electrons play a role in the electrochemical oxidation of regorafenib. The recommended method was successfully applied to the determination of regorafenib in drug capsules.

DOI
http://doi.org/10.25135/bmcr.10.18.12.110486
Keywords
Regorafenib cyclic voltammetry electrochemical oxidation
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© 2018 ACG Publications. All rights reserved.
Original Article

Citric acid synthesis efficiency of Aspergillus niger in carob molasses based media

Bioorg. Med. Chem. Rep. (2018) 1:1 ; 16 - 21
by Busra Olcel Dur , Recep Ozen and Furkan Ayaz

Citric acid is an inactive ingredient that is widely used in pharmaceutical, cosmetic and food industries. It is an organic acid that is produced during the Krebs cycle of the cell metabolism therefore it is present in the living organisms. Natural resource of the citric acid is citrus fruits and it is well known for its preservative action. Synthetically by utilizing from biotechnological tools, it can be produced by Aspergillus niger in a media that can supply the sµgar source. In this study we compared the efficiencies of carob molasses and potato based broths to grow A. niger for citric acid production. Carob molasses are widely found in the region and their utilization as media in biotechnological production of the citric acid would be advantageous. Our results support that this media can be used as an efficient source for the citric acid producing fungus A. niger in the bioreactors.

DOI
http://doi.org/10.25135/bmcr.15.18.12.1124
Keywords
Microbiology Biotechnology Citric acid Carob Pharmaceutical industry Cosmetics
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© 2018 ACG Publications. All rights reserved.
Original Article

The synthesis of two novel bicyclic haloketones and measurement of their biological activity

Bioorg. Med. Chem. Rep. (2018) 1:1 ; 6 - 15
by Esen Yıldız Bekfelavi , Pınar Küce Çevik , Özgür Yılmaz , Nermin Şimşek Kuş , Gökhan Coral and Ayla Çelik

The electrophilic addition of bromine to bicyclo[4.2.0]oct-3-en-7-one in CHCl3 at 0 °C led to 60% yield of trans- and 30% yield of cis-dibromide. The structure of the synthesized molecules was determined using 1H and 13C NMR spectra. The biological activity of cis- and trans-dibromide was investigated in terms of antibiotic and toxic effects at cellular level using microbiologic and cytogenetic test, respectively. The antimicrobial activity of trans-dibromide9 and cis-dibromide10 was tested against Bacillus spizizenii ATCC 6633, Salmonella typhimurium ATCC 14028,Staphylococcus aureus ATCC 25923, Escherichia coli ATCC 25922 and Pseudomonas aeruginosa ATCC 9027. Peripheral blood lymphocytes culture assay was used for determining the cytotoxicity of trans-dibromide 9 and cis-dibromide 10 substrates. Cis- and trans-dibromide showed antibiotic activity and the toxic effects of cis- and trans-dibromide were measured at cellular level by mitotic index as the cell kinetic parameter in a peripheral lymphocyte culture assay.

DOI
http://doi.org/10.25135/bmcr.12.18.11.1035
Keywords
Dibromoketone biological activity antibiotic effect toxic effect mitotic index
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© 2018 ACG Publications. All rights reserved.