Salah M El-Kosy

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A number of new N-arylaminomethyl-1,3,4-oxadiazole derivatives 2, 3a,b, and 9-12a,b were prepared. Sugar (5-N-arylaminomethyl-1,3,4-oxadiazol-2-yl) hydrazones 4-6a,b were synthesized by the reaction of the hydrazino derivatives 3a,b with the corresponding monosaccharides. The novel acyclo-C-nucleosides 7, 8a,b were prepared by heterocyclization of the sugar(More)
The pyrimidine thione derivatives 2a-d were prepared by the reaction of thiourea, ethyl cyanoacetate and several aromatic aldehydes. The acyclic thioglycosides 4a-7d were prepared by the reaction of the synthesized pyrimidine thiones 2a-d with different alkyl halides, whereas the reaction of 2a-d with 2,3,4,6-tetra-O-acetyl-alpha-D-glucopyranosyl bromide(More)
New (tetrazol-5-yl)methylindole derivatives were synthesized from 2-phenylindole. Furthermore, the sugar acetyl hydrazones of the tetrazole derivatives as well as their derived acyclic C-nucleoside analogs were prepared. The synthesized compounds were studied for their anticancer activity against human liver carcinoma cell line (HepG2) and the results(More)
Chitosan was cross-linked using epichlorohydrine to form chitosan gel. The resins obtained were chemically modified through the reaction with 4-4 hexaflouro isopropylidine bis-o-aminophenol to produce resin (RI), 3-Amino-1,2,4 triazole,5-thiol to produce resin (RII) and melamine to produce resin (RIII). The uptake of Reactive Black 5 (RB5) from aqueous(More)
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