Essam Kh. Ahmed: search on Z-Library

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1

A Convenient Synthesis for Some New Pyrido[4′,3′:4,5]thieno[2,3-d]pyrimidines and Related Fused 1,2,4-Triazolo and 1,3,4-Thiadiazolo-derivatives

Ahmed, Essam Kh.

Journal:

Phosphorus Sulfur and Silicon and the Related Elements

Year:

2002

Language:

english

File:

PDF, 167 KB

english, 2002

2

Synthesis and evaluation of anticancer and PDE 5 inhibitory activity of spiro-substituted quinazolin-4-ones

Ameen, Mohamed A., Ahmed, Essam Kh., Ramadan, Mohamed, Abd El-Naby, Hisham A., Abdel-Haseeb, Asmaa A.

Journal:

Monatshefte für Chemie - Chemical Monthly

Year:

2017

Language:

english

File:

PDF, 757 KB

english, 2017

3

ChemInform Abstract: Syntheses of Some New Azolopyrido[4′,3′:4,5]thieno[2,3-d]pyrimidines.

Essam Kh. Ahmed

Journal:

Year:

2002

File:

PDF, 31 KB

2002

4

Synthesis of 3-Substituted Pyrido[4′,3′:4,5]thieno[2,3-d]pyrimidines and Related Fused Thiazolo Derivatives.

Essam Kh. Ahmed

Journal:

Year:

2003

File:

PDF, 134 KB

2003

5

Microwave-Assisted Synthesis of Novel Imidazo- and Pyrimidopyrido[4′,3′:4,5]thieno[2,3-d]pyrimidines.

Essam Kh. Ahmed, Mohamed A. Ameem, Fathy F. Abdel-Latif

Journal:

Year:

2005

File:

PDF, 17 KB

2005

6

ChemInform Abstract: Synthesis of Thiopyrano[4′′,3′′:4′,5′]pyrido[3′,2′:4,5]furo[3,2-d]pyrimidines.

Essam Kh. Ahmed, Mohamed A. Ameen

Journal:

Year:

2010

File:

PDF, 22 KB

2010

7

Syntheses of some new azolopyrido-[4′,3′:4,5]thieno[2,3-d]pyrimidines

Essam Kh. Ahmed

Journal:

Heteroatom Chemistry

Year:

2002

Language:

english

File:

PDF, 151 KB

english, 2002

8

Synthesis of 3-substituted pyrido[4′,3′:4,5]thieno[2,3-d]pyrimidines and related fused thiazolo derivatives

Essam Kh. Ahmed

Journal:

Heteroatom Chemistry

Year:

2003

Language:

english

File:

PDF, 104 KB

english, 2003

9

Iodine catalyzed synthesis of α,α'-bis(substituted benzylidene)-1-carbethoxy-4-piperidone

Mohame D. A. Ameen, Essam, Kh. Ahmed

Journal:

Journal of Heterocyclic Chemistry

Year:

2008

Language:

english

File:

PDF, 158 KB

english, 2008

10

Synthesis of thiopyrano[4″,3″:4′,5′]pyrido[3′,2′:4,5]furo[3,2-d]pyrimidines

Essam Kh. Ahmed, Mohamed A. Ameen

Journal:

Chinese Chemical Letters

Year:

2010

Language:

english

File:

PDF, 258 KB

english, 2010

11

Synthesis of Some New Pyrido[4′,3′:4,5]thieno[2,3-d]pyrimidines and Related Fused Heterocycles

Ahmed, Essam Kh.

Journal:

Phosphorus Sulfur and Silicon and the Related Elements

Year:

2003

Language:

english

File:

PDF, 148 KB

english, 2003

12

The Synthesis of Heterocycles from Indolin-2-one Derivatives and Active Methylene Reagents

Abdel-Latif, Fathy F., Mekheimer, Ramadan A., Mashaly, Mohamed M., Ahmed, Essam Kh.

Journal:

Collection of Czechoslovak Chemical Communications

Year:

1994

Language:

english

File:

PDF, 141 KB

english, 1994

13

Synthesis of New Pyrido[4″,3″:4″,5″]thieno[2″,3″:4,5]pyrimido[2,1-b][1,3,4]thiadiazine Derivatives

Ahmed, Essam Kh.

Journal:

Phosphorus Sulfur and Silicon and the Related Elements

Year:

2002

Language:

english

File:

PDF, 155 KB

english, 2002

14

Synthesis of 3-Substituted Pyrido[4′,3′:4,5]thieno[2,3-d]pyrimidines and Related Fused Thiazolo Derivatives

Ahmed, Essam Kh.

Journal:

Phosphorus Sulfur and Silicon and the Related Elements

Year:

2003

Language:

english

File:

PDF, 138 KB

english, 2003

15

Click Chemistry Based Synthesis of Novel Architectures Bearing Sugar Unit at the Pyridothienopyrimidines

Ameen, Mohamed A., Ahmed, Essam Kh., El Malah, Tamer, Abd El-naby, Hisham A., Abdel-Kader, Areeg A.

Journal:

Journal of Heterocyclic Chemistry

Year:

2014

Language:

english

File:

PDF, 601 KB

english, 2014

16

FUSED QUINOLINE HETEROCYCLES IV. FIRST SYNTHESIS OF FOUR HETEROCYCLIC RING SYSTEMS OF lH-5-THIA-l,2,3,6-TETRA-AZAACEPHENANTHRYLENES AND 1H-5-THIA-l,3,6-TRIAZAACEPHENANTHRYLENES

Mekheimer, Ramadan A., Ahmed, Essam Kh., El-fahham, Hassan A., Kamel, Laila H.

Journal:

Phosphorus Sulfur and Silicon and the Related Elements

Year:

2001

Language:

english

File:

PDF, 646 KB

english, 2001

17

ChemInform Abstract: A Straightforward and Mild Method of Tethering Monosaccharides to Thieno[2,3-d]pyrimidinones via the Copper(I)-Catalyzed Azide-Alkyne “Click Chemistry”.

Ahmed, Essam Kh., Ameen, Mohamed A.

Journal:

Year:

2013

File:

PDF, 31 KB

2013

18

A Novel Nucleophilic Substitution with Quinoline Derivatives. Synthesis of Quinolones and Pyrazolo[4,3- c ]quinoline Derivatives

Mekheimer, Ramadan, Ahmed, Essam Kh., Khattab, Ahmed F.

Journal:

Bulletin of the Chemical Society of Japan

Year:

1993

File:

PDF, 639 KB

1993

19

A Straightforward and Mild Method of Tethering Monosaccharides to Thieno[2,3-d]pyrimidinones via the Copper(I)-catalyzed Azide-Alkyne ‘Click Chemistry’

Ahmed, Essam Kh., Ameen, Mohamed A.

Journal:

Zeitschrift für Naturforschung B

Year:

2012

Language:

english

File:

PDF, 2.01 MB

english, 2012

20

One-pot synthesis, theoretical study and antimicrobial activity of 5,5′-(1,4-phenylenebis-(methanylylidene))Bis(3-Aryl(Alkyl)-2-thioxoimidazolidin-4-one) derivatives

Shaker, Raafat M., Abd El-Naby, Hisham A., Ahmed, Essam Kh., Ibrahim, Mahmoud A. A., Gedamy, Sageda A.

Journal:

Phosphorus Sulfur and Silicon and the Related Elements

Year:

2019

Language:

english

File:

PDF, 1.23 MB

english, 2019

21

Synthesis and Screening of Phosphodiesterase 5 Inhibitory Activity of Fused and Isolated Triazoles Based on Thieno[2,3‐ d ]pyrimidines

Ameen, Mohamed A., Ahmed, Essam Kh., Mahmoud, Hemdan I., Ramadan, Mohamed

Journal:

Journal of Heterocyclic Chemistry

Year:

2019

Language:

english

File:

PDF, 539 KB

english, 2019

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