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Dr. Ashok Kumar

Assistant Professor

Assistant Professor in Vitiligo Research Chair

كلية الطب
مبنى كلية الطب- الدور الثالث
publication
Journal Article
2016

Novel sulfonamide derivatives carrying a biologically active 3,4-dimethoxyphenyl moiety as VEGFR-2 inhibitors

, Mostafa Ghorab, Mansour Alsaid, Yassin Nissan, Abdelkader Ashour, Abdullah Al-Mishari, Ashok Kumar, Sheikh Ahmad . 2016

Novel sulfonamides 3-19 with a biologically active 3,4-dimethoxyphenyl moiety were designed and synthesized. The structures of the synthesized compounds were established using elemental analyses, IR, 1H-NMR, 13C-NMR spectral data and mass spectroscopy. All the synthesized compounds were evaluated for their in vitro anticancer activity against four cancer cell lines, namely human hepatocellular carcinoma (HepG2), human medulloblastoma (Daoy), human cervical cancer (HeLa), and human colon cancer (HT-29), by using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and dasatinib as the reference drug. Among the tested derivatives, compounds 4, 10, 16, and 19 showed good activity as cytotoxic agents. The most active derivatives were evaluated for their ability to inhibit vascular endothelial growth factor receptor (VEGFR)-2. Compounds Z-4-(3-(3,4-dimethoxyphenyl)-3-oxoprop-1-enylamino)-N-(5-methyl-1,3,4-thiadiazol-2-yl)-benzenesulfonamide 10 and Z-4-(3-(3,4-dimethoxyphenyl)-3-oxoprop-1-enylamino)-N-(1H-indazol-6-yl)-benzenesulfonamide 19 were more active as VEGFR-2 inhibitors than dasatinib. Molecular docking of the most active derivatives on the active site of VEGFR-2 revealed that compound 19 exhibited favorable and promising results.

Publication Work Type
Original research article
Volume Number
64
Issue Number
12
Magazine \ Newspaper
Chem. Pharm. Bull
Pages
1747–1754
more of publication
publications

CONTEXT:

Premna resinosa (Hochst.) Schauer (Lamiaceae) is used in many places to treat bronchitis, respiratory illness and convulsions of the rib cage.

OBJECTIVE:

This study…

by Dina A. Albadawi, Ramzi A. Mothana, Jamal M. Khaled, Abdelkhader E. Ashour, Ashok Kumar, Sheikh F. Ahmad, Mansour S. Al-Said, Adnan J. Al-Rehaily and Nawal M. Almusayeib
2017
publications

BACKGROUND::

Varicose veins and the complications of venous disease are common disorders in humans.

OBJECTIVE::

To study the effects of bleomycin as a potential new sclerosing…

by Alghamdi KM, Kumar A, Rikabi A, Abdullah Hasan AlOmrani, Ashour A, Shaik Shaffi Ahamed
2017
publications

Novel sulfonamides 3-19 with a biologically active 3,4-dimethoxyphenyl moiety were designed and synthesized. The structures of the synthesized compounds were established using elemental analyses,…

by Mostafa Ghorab, Mansour Alsaid, Yassin Nissan, Abdelkader Ashour, Abdullah Al-Mishari, Ashok Kumar, Sheikh Ahmad
2016