Zobrazeno 1 - 10
of 33
pro vyhledávání: '"El-Sayed, H."'
Autor:
Haggam, R. A.1 rhaggan99@hotmail.com, El ‐ Sayed, H. A.1, Said, S. A.1, Ahmed, M. H. M.2, Moustafa, A. H.1 ah_hu_mostafa@yahoo.com, Abd ‐ El ‐ Noor, R. E.1
Publikováno v:
Journal of Heterocyclic Chemistry. Jan2017, Vol. 54 Issue 1, p375-383. 9p.
Autor:
El Sayed Ramadan, Mohamed E. I. Badawy, Mohammed R. Amer, Entsar I. Rabea, El Sayed H. El Ashry, Yeldez El Kilany
Publikováno v:
Current organic synthesis. 16(5)
Objective: 5-Amino-2-alkyl/glycosylthio-1,3,4-thiadiazoles have been synthesized by the reaction of 5-amino-1,3,4-thiadiazole-2-thiol with a variety of alkylating agents or glycosyl halides in the presence of anhydrous potassium carbonate in dry acet
Akademický článek
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Autor:
Ahmed T. A. Boraei, El Sayed H. El Ashry, Heba M. Abd El-Nabi, El Sayed H. El Tamany, Mohy El Din Abd El Fattah
Publikováno v:
European Journal of Medicinal Chemistry. 66:106-113
Glycosylation of 1,2-Dihydro-5-(1H-indol-2-yl)-1,2,4-triazole-3-thione with 2,3,4,6-tetra-O-acetyl-α-D-glucopyranosyl bromide, 2,3,4,6-tetra-O-acetyl-α-D-galactopyranosyl bromide and 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-α-D-glucopyranosyl chlori
Publikováno v:
Synlett. 2010:2247-2250
A new class of N-2-glycosyl thiosemicarbazides has been synthesized from N-3-glycosyl oxadiazoline-thiones. Glycosylation of 5-(1H-indol-2-yl)-1,3,4-oxadiazolin-2(3H)-thione with acetylated α-glycosyl halides by grinding in the presence of basic alu
Publikováno v:
Advances in carbohydrate chemistry and biochemistry. 73
2-Amino-2-deoxy-d-glucose (d-glucosamine) is among the most abundant monosaccharides found in natural products. This constituent, recognized for its ubiquity, is presented in most instances as its N-acetyl derivative 2-acetamido-2-deoxy-d-glucopyrano
Akademický článek
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2-Amino-2-deoxy-d-glucose (d-glucosamine) is among the most abundant monosaccharides found in natural products. This constituent, recognized for its ubiquity, is presented in most instances as its N-acetyl derivative 2-acetamido-2-deoxy-d-glucopyrano
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::374ee62e121a3886dcb1b91b7c232a50
https://doi.org/10.1016/bs.accb.2016.08.001
https://doi.org/10.1016/bs.accb.2016.08.001
Publikováno v:
Nucleosides, Nucleotides and Nucleic Acids. 29:698-706
Reaction of o-phenylene diamine with thiosemicarbazide did not give benzotriazine-2-thione 2 as reported, although the product was found to be benzimidazole-2-thione 3. Glycosylation of 3 with acetobromo sugars 4a-4b gave the respective thioglycoside
Autor:
El Sayed H. El Ashry, Nagat Rezki, Nagwa Rashed, S. M. Abdel-Maggeed, El Sayed Ramadan, Laila F. Awad
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 184:1759-1767
Six new thioglycosides incorporating the 4,5-diphenyl- and 3,4,5-triphenylimidazole moiety have been successfully synthesized under both conventional and microwave conditions by reaction of the corresponding thiones with aceto-bromosugars in presence