Publications by authors named "Mohammed Hawsawi"

Diabetes mellitus (DM) is a disorder which is raised at the alarming level and it is characterized by the hyperglycemia results from the impaired action of insulin, production of insulin or both of these simultaneously. Consequently, it causes problems or failure of different body organs such as kidneys, heart, eyes, nerve system. Since this disease cannot be completely cured until now, we aimed to design series of enzymes inhibitors and tested them for DM treatment.

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Originating from the basic chalcone structure, bis-chalcones are characterized by their dual ,-unsaturated carbonyl systems and carry a range of biological activities that include antimicrobial, antiviral, antiparasitic, antioxidant, antiproliferative, and chemical reactivities that warrant a review to cover recent progress. Thus, this review presents the significant potential demonstrated by bis-chalcones in various biological applications. For example, compounds showed excellent antiparasitic activity against leishmania with good selectivity index, and compounds - showed submicromolar activity against SupT1 cells.

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A novel series of 20 compounds containing 4-aminopyrazolo[3,4-]pyrimidine core were synthesized, characterized and their chemical structures confirmed using spectroscopic techniques such as H NMR, C NMR, IR, and HRMS. The compound's growth inhibitory activities were evaluated against 60 human tumor cell lines from nine panels: leukemia, non-small cell lung cancer (NSCLC), colon, central nervous system (CNS), melanoma, ovarian, renal, prostate, and breast cancer. Among all the compounds, 11, 12c, 12d, 12f, and 12j are active against different cancer cell lines.

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A series of new 1,2,4-oxadiazole-based derivatives were synthesized and evaluated for their anti-AD potential. The results revealed that eleven compounds (1b, 2a-c, 3b, 4a-c, and 5a-c) exhibited excellent inhibitory potential against AChE, with IC values ranging from 0.00098 to 0.

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Terpyridine-based metal complexes have emerged as versatile and indispensable building blocks in the realm of modern chemistry, offering a plethora of applications spanning from materials science to catalysis and beyond. This comprehensive review article delves into the multifaceted world of terpyridine complexes, presenting an overview of their synthesis, structural diversity, and coordination chemistry principles. Focusing on their diverse functionalities, we explore their pivotal roles in catalysis, supramolecular chemistry, luminescent materials, and nanoscience.

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A library of 16 3-benzyl- -substituted quinoxalin-2-ones was synthesized as -substituted quinoxalines and quinoxaline-triazole hybrids via click reaction. These compounds were tested for their anticancer activity via MTT assay on HCT-116 and normal colonocyte cell lines to assess their cytotoxic potentials and safety profiles. Overall, compounds , , , and were found to be promising anticolorectal cancer agents; they exhibited remarkable cytotoxicity (IC 0.

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In the current study, a series of fluorine-substituted piperidine derivatives (1-8) has been synthesized and characterized by various spectroscopic techniques. In vitro and in vivo enzyme inhibitory studies were conducted to elucidate the efficacy of these compounds, shedding light on their potential therapeutic applications. To the best of our knowledge, for the first time, these heterocyclic structures have been investigated against α-glucosidase and cholinesterase enzymes.

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This article reviews conductive fabrics made with the conductive polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), their fabrication techniques, and their applications. PEDOT:PSS has attracted interest in smart textile technology due to its relatively high electrical conductivity, water dispersibility, ease of manufacturing, environmental stability, and commercial availability. Several methods apply PEDOT:PSS to textiles.

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The oxidative deamination of N-nitroso N-acetylneuraminic acid (NeuAc) derivatives is a useful reaction for the formation of 5-desamino-5-hydroxy NeuAc derivatives and their stereoisomers. We demonstrated previously that replacement of the classical nucleophile in these reactions, acetic acid, by phenols resulted in a novel double displacement process with substitution of the acetoxy group at the 4-position taking place in addition to that of the 5-acetamido group, for which we postulated a mechanism centered on the formation of a highly reactive vinyl diazonium ion. We now extend these studies to encompass the use of hydroxylamine-based systems and weakly basic amines as nucleophile.

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It is well established that the -nitrosoamide derived from peracetylated derivatives of -acetyl neuraminic acid on treatment with a mixture of sodium isopropoxide and trifluoroethanol, followed by the addition of acetic acid, gives an oxidative deamination product, in which the AcN(NO)-C5 bond is replaced with a AcO-C5 bond with the retention of configuration, affording a practical synthesis of 2-keto-3-deoxy-d-glycero-d-galactononulosonic acid (KDN) derivatives. Application of other strong acids, including hydrogen fluoride, thioacetic acid, trifluoromethanesulfonic acid, and hydrogen azide, functions similarly to afford KDN derivatives functionalized at the 5-position. We describe our attempts to extend the range of useful nucleophiles employed in this oxidative deamination process to include phenols and thiophenols, resulting in the discovery of a new branch of the general reaction and the formation of a series of products resulting from substitution of the 5-acetamido group and of the 4-acetoxy group from neuraminic acid.

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