Achour Seridi

• Professor
• Vice-Rector of Development, Prospective and Orientation at University of Guelma

The formation of a charge-transfer (CT) complex between the electron donor: N-(4-methoxyphenyl)-2-oxooxazolidine-3-sulfonamide (SOZ) and the acceptor molecule: picric acid (PiOH) with a 1:1 stoichiometry ratio in dichloromethane and chloroform at room temperature was studied using spectrophotometry. Various parameters were calculated and the polari...

The aim of this study was to determine the reactivity and stability properties of a novel series of tricarbonylrhenium(I) complexes with 1,2,3-triazole-pyridine based on monovalent and bivalent benzenesulfonamide ligands as well as analyze their binding affinity within the active site of carbonic anhydrases IX and XII, using DFT and molecular docki...

In this work, two classes of Carbonic Anhydrase (CA) inhibitors, sulfonamide and coumarin derivatives linked to pyta moiety (2a-b) and their corresponding rhenium complexes (3a-b), were designed. These compounds were synthesized and fully characterized by classical analytical methods and X-ray diffraction. All the synthesized compounds were evaluat...

In this work, two bidentate 2-pyridyl-1,2,3-triazole ligands (3a and 3b) containing a 4-substituted benzenesulfonamide pharmacophore prepared by classical click chemistry procedures, as well as their corresponding rhenium complexes, 4a and 4b of general formula [ReCl(CO)3(L)] (L = 3a or 3b) were prepared and fully characterised by spectroscopic met...

The charge transfer complexes of the donor 4-isopropyl-2-benzyl-1,2,5-thiadiazolidin-3-one1,1-dioxide (SF) with π acceptors 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) and tetracyanoethylene (TCNE) have been studied spectrophotometrically in chloroform and methanol at room temperature. The results indicated the formation of CT-complexes with a...

Host–guest interactions between β-cyclodextrin and diclofenac were simulated using the semi-empirical PM3, PM6, and ONIOM (B3LYP/3-21g: PM3 and B3LYP/3-21g: PM6) methods. The binding energy and the total stabilization energy (E ONIOM) were used to confirm the most favorable inclusion complex structure. Thermodynamic parameters values show that the...

The inclusion complex of 3,4-dihydroisoquinoline-2(1H)-sulfonamide with b-cyclodextrin was investigated experimentally and by molecular modeling studies. The stoichiometric ratio of the complex was found to be 1:1 and the stability constant was evaluated using the Benesi–Hildebrand equation. Estimation of the thermodynamic parameters of the inclusi...

The inclusion complex of 3,4-dihydroisoquinoline-2(1H)-sulfonamide with β-cyclodextrin was investigated experimentally and by molecular modeling studies. The stoichiometric ratio of the complex was found to be 1:1 and the stability constant was evaluated using the Benesi-Hildebrand equation. Estimation of the thermodynamic parameters of the inclusi...

Three new pyridyltriazole ligands (named pyta) bearing a 4-substituted phenyl arm (nitro- (2a), chloro- (2b) or aminophenyl (2c) moiety) have been synthesized using a convenient click chemistry strategy. The corresponding tricarbonylrhenium complexes 3a, 3b and 3c were prepared and fully characterized by means of NMR, IR and mass spectrometry, as w...

Molecular charge-transfer complexes of three N-aryl-N'-isopropyloxycarbonylsulfamides derivatives with π-acceptors tetracyanoethylene (TCNE), and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), were studied by using zero and second order derivative UV spectrophotometry in different solvents at four different temperatures within the range of 20-35°...

Compounds of type (IV) are screened for their antibacterial activities.

Abstract The synthesis of a new series of N-substituted perhydro-1,3-oxazin-2-ones containing N-phenylsulfonamide is described. The compounds 7a–7f were obtained in a one-pot reaction from chlorosulfonyl isocyanate, selected 1,3- halogenoalcohols and various aromatic amines in alkaline conditions, to give the target N-heterocyclic 6-membered ring c...

The preparation of two M(CO)3 complexes (M=Re and 99mTc) from a novel pyridyltriazole-based ligand 2 bearing the bioactive (2-methoxyphenyl)piperazine pharmacophore are described. Spectral data, X-ray structure and DFT calculations of the rhenium(I) complex as well as the 99mTc-labelling of 2 are reported. Both complexes were neutral and iso-struct...

As a variation of the commonly used bipy ligand in Re(CO)3 chemistry, a series of structurally related complexes in which bipy is replaced by pyridine–triazole ligands (or pyta) bearing a pendant acetyl group on the triazole ring were prepared efficiently by the click chemistry approach. Depending on the nature of the pendant arm, different ReI com...

The title compound, C11H21Cl3N2O4S, was produced as part of a development programme of a new synthetic route to chloro­ethyl­nitro­sosulfamides (CENS) with three chloro­ethyl moieties. These compounds possess structural features that confer potential biological activity and act as alkyl­ating agents. The packing is governed by four weak C—H⋯O inter...

The title compound, C11H21Cl3N2O4S, was produced as part of a development programme of a new synthetic route to chloroethylnitrososulfamides (CENS) with three chloroethyl moieties. These compounds possess structural features that confer potential biological activity and act as alkylating agents. The packing is governed by four weak C—H...O interact...

A series of N-cyanomethyl aromatic sulfonamides and bis-sulfonamides was prepared by reaction of arylsulfonyl halides with aminoacetonitrile. The obtained derivatives incorporated various aryl moieties, such as 4-halogeno/alkyl/aryl/nitro-substituted-phenyl, pentafluorophenyl or 2-naphthyl. Moderate inhibitory activity was detected for some compoun...

In this paper we have investigated the kinetic decomposition of 2-chloroethylnitrososulfamides (CENS) in fetal calf serum. The study was monitored by on-line solid phase extraction linked to RP-LC-MS. We demonstrated that CENS are less stable in fetal calf serum than in aqueous buffer at pH 7.4 and 37 degrees C. Moreover, we have shown that partiti...

The kinetics decomposition of 2-chloroethylnitrososulfamides (CENS) was studied in aqueous buffered solutions with pH ranging from 0 to 14. The study was monitored by RP-LC-MS and conventional UV spectrophotometry. The reaction proceeded via a pseudo-first-order kinetic with significant correlation coefficient. The major decomposition products from...