Chemistry Journal of Moldova

 

Abstract (PDF)
Graphical Abstract: Four chalcone derivatives were synthesized and pre-evaluated as broad-spectrum UV protector. Chalcones 1-4 showed a wide range of UV absorbance values and moderate molar absorptivity values. Chalcones 3 and 4 showed better photostability than chalcones 1 and 2 because the lowering of their absorbance was smaller and slower under UVB irradiation. A combination of the spectra of chalcone derivatives 1-4 indicated that a formulation containing all four will provide a broad-spectrum sunscreen protecting the skin from UVA and UVB. 


 

Abstract (PDF)
Graphical Abstract: In this study, novel pyrazole, imidazole, pyrimidine derivatives bearing imidazo[4,5-b]indol moiety were successfully synthesized and their chemical structures were identified and confirmed by different spectral techniques. All the synthesized compounds were tested against four bacterial strains (Bacillus subtilis, Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa) and two fungi (Aspergillus flavus and Candida albicans). The obtained results show that the synthesized compounds could find fruitful applications as antibacterial and antifungal agents in pharmaceutical chemistry.


 

DOI: http://dx.doi.org/10.19261/cjm.2019.639   

Abstract (PDF) 

Graphical Abstract: 4-(Dimethylamino)pyridine was found to be an efficient homogenous catalyst for one-pot multi-component reactions between hydrazine monohydrate, ethyl cyanoacetate, ketone, and malononitrile for the synthesis of 1,6-diamino-2-oxo-1,2,3,4-tetrahydropyridine-3,5-dicarbonitrile derivatives using ultrasonication at room temperature in ethanol solution within 35-50 min with yields of over 90%.
 

DOI: http://dx.doi.org/10.19261/cjm.2019.616   

 

Abstract (PDF)
Graphical Abstract: This review presents last decade and some past especially relevant studies in the field of (+)-3-carene synthetic transformations. This paper discusses exclusively the transformations of (+)-3-carene, proceeding with the retention of the native bicyclic carbon skeleton. The data concerning the features of epoxidation and oxidation reactions of (+)-3-carene, the synthesis of sulphur- and selenium-containing derivatives and their use in asymmetric synthesis are given. It also describes methods for producing amino derivatives of (+)-3-carene, substituted heterocycles based on it, reactions for the preparation of aziridines, azido-alcohols and azidoamines, as well as chiral phosphites as bidentate ligands.


 

DOI: http://dx.doi.org/10.19261/cjm.2018.520   

 

Abstract (PDF)
Graphical Abstract: In this study, the chloro-substituted hydroxyxanthones were prepared by cyclodehydration of acid derivatives and substituted phenol in the presence of Eaton reagent, followed by halogenations step to electrophilic substitution of chlorine in a moderate yield. The in vitro anticancer activity study on various cell lines revealed that the chloro functional group increases the anticancer activity of the hydroxyxanthone derivatives. The molecular docking study showed that there was a binding interaction between chloro-hydroxyxanthone and the amino acid residues such as Asp810, Cys809, Ile789, His790, and Leu644 of protein tyrosine kinase receptor.


 

DOI: http://dx.doi.org/10.19261/cjm.2017.449  

Abstract (PDF) 

Graphical Abstract: This method reported the use of tartaric acid as a green and highly efficient catalyst for the convenient synthesis of polysubstituted quinolines and xanthenes derivatives in excellent yields under solvent-free conditions. The main advantages of this one-pot procedure are the green and economic availability of the catalyst, simple experimental and work-up procedures.


 

DOI: http://dx.doi.org/10.19261/cjm.2017.458   

Abstract (PDF) 

Graphical Abstract: The study describes the synthesis of 11-homodrim-6,8-dien-12-oic acid N-substituted amides containing diazine, 1,2,4-triazole and carbazole rings based on commercially available sclareolide. The mentioned compounds were prepared for the first time by interaction of the generated in situ acyl chloride with some heterocyclic amines: 2- and 4-aminopyrimidine, 2-aminopyrazine, 3-amino-1,2,4-triazole and N-aminocarbazole. Their structures were fully elucidated by elemental and spectral analyses (IR, ¹H and ¹³C NMR).


 

DOI: dx.doi.org/10.19261/cjm.2017.376 

 

Graphical Abstract: Eight new aliphatic symmetrical diphosphonium salts were synthesized by reacting ω,ω´-dibromoalkanes with triphenylphosphine or tributylphosphine using N,N-dimethyl acetamide as a solvent at 140~150°C for 16~20 h under a nitrogen atmosphere.

 

DOI: dx.doi.org/10.19261/cjm.2016.11(2).07

 

Graphical Abstract: 5,6-Dichloro/dimethyl-2-(2´,3´/2´,4´/2´,5´/3´,4´/3´,5´-dimethoxyphenyl)-1H-benzimidazoles were synthesized and characterized experimentally and theoretically. The optimized molecular geometry, zero point energy, dipole moment, ESE and charge distributions were calculated by Gaussian 09 using DFT method. The calculated energy values with ZPE correction and DFT show that the methyl derivatives are more stable than the chloro forms.

 

Supplementary Material (PDF)
Graphical Abstract: An eco-friendly and environmentally benign synthesis of 3,4,5-substituted furan-2(5H)-ones employing Iranian seedless barberry or zereshk (Berberis integerrima ‘Bidaneh’, Berberidaceae) as a biocatalyst was developed. The merits of this method include the environmentally friendly reaction conditions, simple operation, broad substrate, satisfied yields and generate less waste than the conventional chemical reagents.