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1

ChemInform Abstract: Dimedone: A Versatile Precursor for Annulated Heterocycles

El Sayed H. El Ashry, Laila F. Awad, Yeldez Kilany, Elsayed I. Ibrahim

Journal:

Année:

2010

Fichier:

PDF, 15 KB

2010

2

ChemInform Abstract: Recent Advances in the Dimroth Rearrangement: A Valuable Tool for the Synthesis of Heterocycles

El Sayed H. El-Ashry, Said Nadeem, Muhammad Raza Shah, Yeldez El Kilany

Journal:

Année:

2010

Fichier:

PDF, 15 KB

2010

3

ChemInform Abstract: Acyclic Analogues of Glucosamidine, 1-Deoxynojirimycin and N-(1,3-Dihydroxyprop-2-yl) Derivative of Valiolamine as Potential Glucosidase Inhibitors.

El Sayed H. El Ashry, Adel A.-H. Abdel-Rahman, Yeldez El Kilany, Richard R. Schmidt

Journal:

Année:

1999

Fichier:

PDF, 32 KB

1999

4

Favored direction of the isopropylidenation of 1-C-substituted l-threo-glycerol

El Sayed H. El Ashry, Yeldez El Kilany, Farag Singab

Journal:

Carbohydrate Research

Année:

1983

Langue:

english

Fichier:

PDF, 197 KB

english, 1983

5

Saccharide (2,4-dichlorophenoxy)acetylhydrazones, the mechanism of heterocyclization under acetylative conditions

El Sayed H. El Ashry, Yeldez El Kilany, Abdallah A. Abdallah, Kamel Mackawy

Journal:

Carbohydrate Research

Année:

1983

Langue:

english

Fichier:

PDF, 376 KB

english, 1983

6

Synthesis and reactions of some hydrazones of dehydro-l-ascorbic acid

Yeldez El Kilany, Hamida Abdel Hamid, El Sayed H. El Ashry

Journal:

Carbohydrate Research

Année:

1984

Langue:

english

Fichier:

PDF, 474 KB

english, 1984

7

Reaction of 1,2:5,6-di-O-isopropylidene-α-d-ribo-hexofuranos-3-ulose benzoylhydrazone with acetic anhydride

El Sayed H. El Ashry, Mohamed A. Abdel Rahman, Yeldez El Kilany, Nagwa Rashed

Journal:

Carbohydrate Research

Année:

1987

Langue:

english

Fichier:

PDF, 209 KB

english, 1987

8

Assignment of the location of the isopropylidene ring in 1-C-substituted-l-threo-glycerols by 13C-n.m.r. spectroscopy

El Sayed H. El Ashry, Yeldez El Kilany, Ahmed Mousaad

Journal:

Carbohydrate Research

Année:

1987

Langue:

english

Fichier:

PDF, 156 KB

english, 1987

9

Mode of formation of quinoxaline versus 2[1 H]-quinoxalinone rings from dehydro-d-erythorbic acid

Ahmed Mousaad, Nagwa Rashed, Hamida Abdel Hamid, Yeldez El Kilany, El Sayed H. El Ashry

Journal:

Carbohydrate Research

Année:

1992

Langue:

english

Fichier:

PDF, 531 KB

english, 1992

10

Novel types of acyclic C-nucleoside analogues via the reaction of hydrogen bromide in acetic acid with l-threo-(glycerol-l-yl)pyrazolinediones

Hamida Abldel Hamid, Nagwa Rashed, Yeldez El Kilany, El Sayed H. El Ashry

Journal:

Carbohydrate Research

Année:

1992

Langue:

english

Fichier:

PDF, 504 KB

english, 1992

11

Facile synthesis and rearrangement of L-threo-2,3-hexodiulosono-1,4-lactone 2-(2-arylhydrazones)

El Sayed H. El Ashry, Ibrahim E. El Kholy, Yeldez El Kilany

Journal:

Carbohydrate Research

Année:

1977

Langue:

english

Fichier:

PDF, 525 KB

english, 1977

12

Some aspects of the reaction products of dehydro-l-ascorbic acid with o-phenylenediamine and arylhydrazines

El Sayed H. El Ashry, Ibrahim E. El Kholy, Yeldez El Kilany

Journal:

Carbohydrate Research

Année:

1978

Langue:

english

Fichier:

PDF, 315 KB

english, 1978

13

Synthesis of some pyrazole derivatives having l-threo and d-erythro side chains

El Sayed H. El Ashry, Yeldez El Kilany, Farrag Singab

Journal:

Carbohydrate Research

Année:

1977

Langue:

english

Fichier:

PDF, 756 KB

english, 1977

14

Bromodeoxy-isoascorbic acid and derivatives thereof

El Sayed H. El Ashry, Yeldez El Kilany

Journal:

Carbohydrate Research

Année:

1980

Langue:

english

Fichier:

PDF, 133 KB

english, 1980

15

Derivatives from d-ascorbic acid

El Sayed. El Ashry, Yeldez El Kilany, Farrag Singab

Journal:

Carbohydrate Research

Année:

1980

Langue:

english

Fichier:

PDF, 266 KB

english, 1980

16

Bromodeoxy analogs of some acyclic-sugar C-nucleosides

El Sayed H. El Ashry, Yeldez El Kilany

Journal:

Carbohydrate Research

Année:

1980

Langue:

english

Fichier:

PDF, 152 KB

english, 1980

17

Partial protection and substitution of L-threo-glycerol-1-ylpyrazoledione

El Sayed H. El Ashry, Yeldez El Kilany, Farrag Singab

Journal:

Carbohydrate Research

Année:

1980

Langue:

english

Fichier:

PDF, 401 KB

english, 1980

18

Exceptional oxidation, with copper ion, of the bis-[(o-chlorophenyl)hydrazone] of l-threo-2,3-hexodiulosono-1,4-lactone

El Sayed H. El Ashry, George H. Labib, Yeldez El Kilany

Journal:

Carbohydrate Research

Année:

1976

Langue:

english

Fichier:

PDF, 250 KB

english, 1976

19

Regioselective formation of terminal 1,3-dioxolanes from 1-C-substituted-d-erythro-glycerols

El Sayed H. El Ashry, Yeldez El Kilany, Farrag Singab

Journal:

Carbohydrate Research

Année:

1986

Langue:

english

Fichier:

PDF, 288 KB

english, 1986

20

Reaction of dehydro-l-ascorbic acid analogues with o-phenylenediamine

El-Sayed H. El Ashry, Mohamed A. Abdel Rahman, Yeldez El Kilany, Nagwa Rashed

Journal:

Carbohydrate Research

Année:

1986

Langue:

english

Fichier:

PDF, 186 KB

english, 1986

21

Regioselective hydrazonation at C-2 of dehydroascorbic acid

El Sayed H. El Ashry, Yeldez El Kilany, Hamida Abdel Hamid

Journal:

Carbohydrate Research

Année:

1988

Langue:

english

Fichier:

PDF, 153 KB

english, 1988

22

Dehydrative ring-closure of 3-substituted 2-quinoxalinones to give fused and nonfused pyrazoloquinoxalines

El Sayed H. El Ashry, Ibrahim E. El Kholy, Yeldez El Kilany

Journal:

Carbohydrate Research

Année:

1978

Langue:

english

Fichier:

PDF, 569 KB

english, 1978

23

Acyclic analogues of glucosamidine, 1-deoxynojirimycin and N-(1,3-dihydroxyprop-2-yl) derivative of valiolamine as potential glucosidase inhibitors

El Sayed H. El Ashry, Adel A.-H. Abdel-Rahman, Yeldez El Kilany, Richard R. Schmidt

Journal:

Année:

1999

Langue:

english

Fichier:

PDF, 409 KB

english, 1999

24

Synthesis and reactions of 2-(p-chloroanilino)-5- (D-galacto-1,2,3,4,5-pentahydroxypentyl)-1,3,4-thiadiazole

Prof. Dr. El Sayed H. El Ashry, Mahmoud A. M. Nassr, Yeldez El Kilany, Ahmed Mousaad

Journal:

Advanced Synthesis & Catalysis

Année:

1986

Langue:

english

Fichier:

PDF, 388 KB

english, 1986

25

5,6-O-Benzylidene derivatives of dehydro-l-ascorbic acid and dehydro-d-isoascorbic acid osazones

E.Sayed H. El Ashry, Yeldez El Kilany, Farrag Singab

Journal:

Carbohydrate Research

Année:

1986

Langue:

english

Fichier:

PDF, 382 KB

english, 1986

26

Semicarbazones derived from dehydro-l-ascorbic acid

El Sayed H. El Ashry, Yeldez El Kilany, Adel Amer, Hans Zimmer

Journal:

Carbohydrate Research

Année:

1981

Langue:

english

Fichier:

PDF, 139 KB

english, 1981

27

Reactions of 3-(1-arylhydrazono-L-threo-2,3,4-trihydroxybutyl)-1-methyl-2-Quinoxalinones

El Sayed H. El Ashry, Ibrahim E. El Kholy, Yeldez El Kilany

Journal:

Carbohydrate Research

Année:

1978

Langue:

english

Fichier:

PDF, 567 KB

english, 1978

28

Reactions of l-ascorbic and isoascorbic acids with hydrazines related to sulfanilamide drugs

Raafat Soliman, El Sayed H. El Ashry, Ibrahim E. El Kholy, Yeldez El Kilany

Journal:

Carbohydrate Research

Année:

1978

Langue:

english

Fichier:

PDF, 579 KB

english, 1978

29

On the ring transformation of hydrazine derivatives of l-ascorbic acid into nitrogen heterocyclic derivatives

El Sayed H. El Ashry, Yeldez El Kilany, Farrag Singab

Journal:

Carbohydrate Research

Année:

1978

Langue:

english

Fichier:

PDF, 530 KB

english, 1978

30

A new synthesis of pyridazinones from carbohydrate precursors, using the wittig reagent

El Sayed H. El Ashry, Mohamed M.A. Abdel Rahman, Yeldez El Kilany, Adel Amer

Journal:

Carbohydrate Research

Année:

1980

Langue:

english

Fichier:

PDF, 122 KB

english, 1980

31

Periodate-oxidation products of 3-substituted 2-quinoxalinones: preparation of glyoxalylquinoxalinones

El Sayed H. El Ashry, Ibrahim E. El Kholy, Yeldez El Kilany

Journal:

Carbohydrate Research

Année:

1978

Langue:

english

Fichier:

PDF, 187 KB

english, 1978

32

D-Glucosyl Kojic Acid Derivatives, Potential Precursors for the Cyclic Carboxylate Equivalents of Gaba Mimetic Agents

El Ashry, El Sayed H., El Kilany, Yeldez, Mousaad, Ahmed

Journal:

Journal of Carbohydrate Chemistry

Année:

1987

Langue:

english

Fichier:

PDF, 420 KB

english, 1987

33

Heterocycles from carbohydrate precursors. Part XIX. The X-ray crystal structure determination of the reaction product of 4-(2-acetoxyethylidene)-4-hydroxy-2,3-dioxobutyro-1,4-lactone-2-(p-bromophenylhydrazone) with methylhydrazine

C. H. Stam, El Sayed El Ashry, Yeldez El Kilany, H. C. Van DerPlas

Journal:

Journal of Heterocyclic Chemistry

Année:

1980

Fichier:

PDF, 176 KB

1980

34

Synthesis and quantitative structure activity relationship (QSAR) of arylidene (benzimidazol-1-yl)acetohydrazones as potential antibacterial agents

El-Kilany, Yeldez, Nahas, Nariman M., Al-Ghamdi, Mariam A., Badawy, Mohamed E. I., El Ashry, El Sayed H.

Journal:

World Journal of Microbiology and Biotechnology

Année:

2015

Langue:

english

Fichier:

PDF, 432 KB

english, 2015

35

Heterocycles from carbohydrate precursors. Part 41. Mode of formation of 1,3-dioxolanes and 1,3-dioxanes from 1-C-substituted glycerols during their benzylidenation

El Ashry, El Sayed H., El Kilany, Yeldez, Mousaad, Ahmed

Journal:

Journal of the Chemical Society Perkin Transactions 1

Année:

1988

Langue:

english

Fichier:

PDF, 726 KB

english, 1988

36

Heterocycles from carbohydrate precursors. Part 40. Kinetic and thermodynamic products of ketalation of 1-C-substituted L-threo-glycerol: a regioselective formation of 1,3-dioxolanes

El Ashry, El Sayed H., El Kilany, Yeldez, Singab, Farrag

Journal:

Journal of the Chemical Society Perkin Transactions 1

Année:

1988

Langue:

english

Fichier:

PDF, 653 KB

english, 1988

37

-Fluorophemyl)-Pyrazol-3-YL]-Quimoxalimomes

Kilany, Yeldez El, Rashed, Nagwa, Mansour, Magda, Rahman, Mohamed Abdel, El Astiry, El Sayed

Journal:

Journal of Carbohydrate Chemistry

Année:

1988

Langue:

english

Fichier:

PDF, 378 KB

english, 1988

38

Perspectives and Mechanistic Aspects of the Action of Hydrazines on Kojic Acid 1

El Ashry, El Sayed H., Kilany, Yeldez El, Mousaad, Ahmed

Journal:

Journal of Carbohydrate Chemistry

Année:

1989

Langue:

english

Fichier:

PDF, 471 KB

english, 1989

39

Synthesis and Rearrangement of Mono and Bis-(p-Fluorophenyl)Hydrazones of Dehydro-L-Ascorbic Acid

Kilany, Yeldez El, Rashed, Nagwa, Mansour, Magda, H. El Ashry, El Sayed

Journal:

Journal of Carbohydrate Chemistry

Année:

1988

Langue:

english

Fichier:

PDF, 490 KB

english, 1988

40

-erythro-glycerol-1-yl)6,7-dimethylflavazoles 1

El Ashry, El Sayed H., Kilany, Yeldez El, Kandil, Sherif, Shimy, Nivine El

Journal:

Journal of Carbohydrate Chemistry

Année:

1989

Langue:

english

Fichier:

PDF, 427 KB

english, 1989

41

]quinoxalline

El Ashry, El Sayed H., Kilany, Yeldez El, Mousaad, Ahmed

Journal:

Journal of Carbohydrate Chemistry

Année:

1989

Langue:

english

Fichier:

PDF, 298 KB

english, 1989

42

A Novel Synthesis of Pyridazinones: Preparation of 3-[1-Aryl-6(1H)-pyridazinon-3-yl]-2(1H)-quinoxalinones

Amer, Adel, Sayed H. El Ashry, El, El Kilany, Yeldez

Journal:

Année:

1987

Langue:

english

Fichier:

PDF, 198 KB

english, 1987

43

Acyclic C -Nucleoside Analogs of the Type of 5- C -Polyhydroxyalkyl-1,3,4-thiadiazoles

El Ashry, Elsayed S. H., Nassr, Mahmoud A., El Kilany, Yeldez, Mousaad, Ahmed

Journal:

Bulletin of the Chemical Society of Japan

Année:

1987

Fichier:

PDF, 583 KB

1987

44

Synthesis and Crystal Structures of Benzimidazole-2-thione Derivatives by Alkylation Reactions

El Ashry, El, El Kilany, Yeldez, Nahas, Nariman, Barakat, Assem, Al-Qurashi, Nadia, Ghabbour, Hazem, Fun, Hoong-Kun

Journal:

Année:

2015

Langue:

english

Fichier:

PDF, 2.58 MB

english, 2015