Works by Hawas, Usama W.

Results: 27

Two new flavonoids from Origanum vulgare.

Published in:

Natural Product Research, 2008, v. 22, n. 17, p. 1540, doi. 10.1080/14786410600898987

By:

Hawas, Usama W.;
El-Desoky, S.K.;
Kawashty, S.A.;
Sharaf, M.

Publication type:

Article

Antioxidant activity of brocchlin carboxylic acid and its methyl ester from Chrozophora brocchiana.

Published in:

Natural Product Research, 2007, v. 21, n. 7, p. 632, doi. 10.1080/14786410701371124

By:

Hawas, Usama W.

Publication type:

Article

A new α-methylanthraquinone glucoside from Emex spinosus.

Published in:

Natural Product Research, 2006, v. 20, n. 8, p. 742, doi. 10.1080/14786410500281789

By:

Hawas, Usama W.;
El-Ansari, Mohamed A.;
Laatsch, Hartmut

Publication type:

Article

Antioxidant and Antiproliferative Activity of Diospyros lotus L. Extract and Isolated Compounds.

Published in:

Plant Foods for Human Nutrition, 2009, v. 64, n. 4, p. 264, doi. 10.1007/s11130-009-0133-0

By:

Loizzo, Monica Rosa;
Said, Ataa;
Tundis, Rosa;
Hawas, Usama W.;
Rashed, Khaled;
Menichini, Federica;
Frega, Natale;
Menichini, Francesco

Publication type:

Article

Synthesis of some thiopyrimidine and thiazolopyrimidines starting from 2,6-dibenzylidene-3-methylcyclohexanone and its antimicrobial activities

Published in:

Arabian Journal of Chemistry, 2012, v. 5, n. 4, p. 509, doi. 10.1016/j.arabjc.2010.09.019

By:

Hawas, Usama W.;
Al-Omar, Mohamed A.;
Amr, Abdel Galil E.;
Hammam, Abu El-Ftouh G.

Publication type:

Article

Phytochemical Compositions of Some Red Sea Halophyte Plants with Antioxidant and Anticancer Potentials.

Published in:

Molecules, 2022, v. 27, n. 11, p. 3415, doi. 10.3390/molecules27113415

By:

Hawas, Usama W.;
El-Kassem, Lamia T. Abou;
Shaher, Fekri M.;
Al-Farawati, Radwan;
Ghandourah, Mohamed

Publication type:

Article

Induction of apoptosis by emestrin from the plant endophytic fungus Emericella nidulans ATCC 38163 in Huh-7 human hepatocellular carcinoma cells.

Published in:

Natural Product Research, 2023, v. 37, n. 24, p. 4244, doi. 10.1080/14786419.2023.2176489

By:

El-Kassem, Lamia T. Abou;
Hawas, Usama W.;
Ahmed, Eman F.;
Binothman, Najat;
Alghamdi, Rana A.

Publication type:

Article

Bioactive sulfonyl metabolites from the Red Sea endophytic fungus Penicillium aculeatum.

Published in:

Natural Product Research, 2022, v. 36, n. 11, p. 2713, doi. 10.1080/14786419.2021.1917571

By:

Hawas, Usama W.;
T. Abou El-Kassem, Lamia;
Ahmed, Eman F.;
Alghamdi, Rana A.

Publication type:

Article

Rotenoid and isoflavone metabolites from an antioxidant seed extract of Dalbergia lanceolaria subsp. paniculata (roxb.) thoth.

Published in:

Natural Product Research, 2020, v. 34, n. 5, p. 613, doi. 10.1080/14786419.2018.1491042

By:

Abou El-Kassem, Lamia T.;
Hawas, Usama W.;
Abdelfattah, Mohamed S.;
Mostafa, Ayat A.

Publication type:

Article

In vitro inhibition of Hepatitis C virus protease and antioxidant by flavonoid glycosides from the Saudi costal plant Sarcocornia fruticosa.

Published in:

Natural Product Research, 2019, v. 33, n. 23, p. 3364, doi. 10.1080/14786419.2018.1477153

By:

Hawas, Usama W.;
Abou El-Kassem, Lamia T.;
Shaher, Fekri;
Al-Farawati, Radwan

Publication type:

Article

Cytotoxic activity of alkyl benzoate and fatty acids from the red sea sponge <italic>Hyrtios erectus</italic>.

Published in:

Natural Product Research, 2018, v. 32, n. 12, p. 1369, doi. 10.1080/14786419.2017.1344662

By:

Hawas, Usama W.;
Abou El-Kassem, Lamia T.;
Abdelfattah, Mohamed S.;
Elmallah, Mohammed I. Y.;
Eid, Mennat Allah G.;
Monier, Marwa;
Marimuthu, N.

Publication type:

Article

Thalassiolin D: a new flavone O -glucoside Sulphate from the seagrass Thalassia hemprichii.

Published in:

Natural Product Research, 2017, v. 31, n. 20, p. 2369, doi. 10.1080/14786419.2017.1308367

By:

Hawas, Usama W.;
Abou El-Kassem, Lamia T.

Publication type:

Article

An Efficient Method for the In Vitro Production of Azol(in)e-Based Cyclic Peptides.

Published in:

Angewandte Chemie International Edition, 2014, v. 53, n. 51, p. 14171, doi. 10.1002/anie.201408082

By:

Houssen, Wael E.;
Bent, Andrew F.;
McEwan, Andrew R.;
Pieiller, Nathalie;
Tabudravu, Jioji;
Koehnke, Jesko;
Mann, Greg;
Adaba, Rosemary I.;
Thomas, Louise;
Hawas, Usama W.;
Liu, Huanting;
Schwarz‐Linek, Ulrich;
Smith, Margaret C. M.;
Naismith, James H.;
Jaspars, Marcel

Publication type:

Article

Cytotoxic Effect of Fusarium Equiseti Fungus Metabolites Against N-Nitrosodiethylamine- and CCL4-Induced Hepatocarcinogenesis in Rats.

Published in:

Pharmaceutical Chemistry Journal, 2018, v. 52, n. 4, p. 326, doi. 10.1007/s11094-018-1816-3

By:

Hawas, Usama W.;
Farrag, Abdel Razik H.;
Ahmed, Eman F.;
Abou El-Kassem, Lamia T.

Publication type:

Article

HEPATOPROTECTIVE AND GASTRO PROTECTIVE STUDIES OF Terminalia arjuna LEAVES EXTRACT AND PHYTOCHEMICAL PROFILE.

Published in:

Banat's Journal of Biotechnology, 2014, v. 5, n. 10, p. 30, doi. 10.7904/2068-4738-V(10)-30

By:

SAID, Ataa;
El-FISHAWY, Ahlam M.;
El-SHENAWY, Siham;
HAWAS, Usama W.;
ABOELMAGD, Mohamed

Publication type:

Article

An Efficient Method for the In Vitro Production of Azol(in)e-Based Cyclic Peptides.

Published in:

Angewandte Chemie, 2014, v. 126, n. 51, p. 14395, doi. 10.1002/ange.201408082

By:

Houssen, Wael E.;
Bent, Andrew F.;
McEwan, Andrew R.;
Pieiller, Nathalie;
Tabudravu, Jioji;
Koehnke, Jesko;
Mann, Greg;
Adaba, Rosemary I.;
Thomas, Louise;
Hawas, Usama W.;
Liu, Huanting;
Schwarz ‐ Linek, Ulrich;
Smith, Margaret C. M.;
Naismith, James H.;
Jaspars, Marcel

Publication type:

Article

Flavonoid constituents and protective efficacy of Citrus reticulate (Blanco) leaves ethanolic extract on thioacetamide-induced liver injury rats.

Published in:

Biomarkers, 2023, v. 28, n. 2, p. 160, doi. 10.1080/1354750X.2022.2151645

By:

W. Hawas, Usama;
El-Ansari, Mohamed A.;
Osman, Abeer F.;
Galal, Asmaa F.;
Abou El-Kassem, Lamia T.

Publication type:

Article

Different Culture Metabolites of the Red Sea Fungus Fusarium equiseti Optimize the Inhibition of Hepatitis C Virus NS3/4A Protease (HCV PR).

Published in:

Marine Drugs, 2016, v. 14, n. 10, p. 190, doi. 10.3390/md14100190

By:

Hawas, Usama W.;
Al-Farawati, Radwan;
El-Kassem, Lamia T. Abou;
Turki, Adnan J.

Publication type:

Article

A new acylated flavone glycoside, in vitro antioxidant and antimicrobial activities from Saudi Diospyros mespiliformis Hochst. ex A. DC (Ebenaceae) leaves.

Published in:

Zeitschrift für Naturforschung. Section C: A Journal of Biosciences, 2022, v. 77, n. 9/10, p. 387, doi. 10.1515/znc-2021-0291

By:

Hawas, Usama W.;
El-Ansari, Mohamed A.;
El-Hagrassi, Ali M.

Publication type:

Article

Halo-phenolic metabolites and their in vitro antioxidant and cytotoxic activities from the Red Sea alga Avrainvillea amadelpha.

Published in:

Zeitschrift für Naturforschung. Section C: A Journal of Biosciences, 2021, v. 76, n. 5/6, p. 213, doi. 10.1515/znc-2020-0221

By:

Hawas, Usama W.;
Abou El-Kassem, Lamia T.;
Al-farawati, Radwan;
Shaher, Fekri M.

Publication type:

Article

Sesquiterpenes from the Saudi Red Sea: Litophyton arboreum with their cytotoxic and antimicrobial activities.

Published in:

Zeitschrift für Naturforschung. Section C: A Journal of Biosciences, 2018, v. 73, n. 1/2, p. 9, doi. 10.1515/znc-2017-0037

By:

Abou El-Kassem, Lamia T.;
Hawas, Usama W.;
El-Desouky, Samy K.;
Al-Farawati, Radwan

Publication type:

Article

The Biological Effects of Some Marine Extracts Against Aedes aegypti (L.) Mosquito Vector of the Dengue Fever in Jeddah Governorate, Saudi Arabia.

Published in:

Journal of Pure & Applied Microbiology, 2016, v. 10, n. 3, p. 1949

By:

Mahyoub, Jazem A.;
Hawas, Usama W.;
Al-Ghamdi, Khalid M.;
Aljameeli, Mohammad M. E.;
Shaher, Fekri M.;
Bamakhrama, Muneer A.;
Alkenani, N. A.

Publication type:

Article

Phytochemical and pharmacological studies on Leonotis leonurus.

Published in:

Pharmaceutical Biology, 2009, v. 47, n. 9, p. 894, doi. 10.1080/13880200902942428

By:

El-Ansari, Mohamed A.;
Aboutabl, ElSayed A.;
Farrag, Abdel Razik H.;
Sharaf, Mohammed;
Hawas, Usama W.;
Soliman, Ghadir M.;
El-Seed, Gamila S.

Publication type:

Article

Xanthones and Antitumor Activity of <i>Bombax ceiba</i> Against Ehrlich Ascites Carcinoma Cells in Mice.

Published in:

Chemistry of Natural Compounds, 2013, v. 49, n. 5, p. 945, doi. 10.1007/s10600-013-0789-4

By:

El-Toumy, Sayed A.;
Hawas, Usama W.;
Taie, Hanan A. A.

Publication type:

Article

NMR spectral analysis of flavonoids from Chrysanthemum coronarium.

Published in:

Chemistry of Natural Compounds, 2007, v. 43, n. 6, p. 659, doi. 10.1007/s10600-007-0222-y

By:

Ibrahim, Lamyaa F.;
El-Senousy, Waled M.;
Hawas, Usama W.

Publication type:

Article

A new flavone glucoside from Stachys aegyptiaca.

Published in:

Chemistry of Natural Compounds, 2007, v. 43, n. 5, p. 542, doi. 10.1007/s10600-007-0186-y

By:

El-Desoky, S. K.;
Hawas, Usama W.;
Sharaf, M.

Publication type:

Article

Novel Bioactive Metabolites from a Marine Derived Bacterium Nocardia sp. ALAA 2000.

Published in:

Journal of Antibiotics, 2008, v. 61, n. 6, p. 379, doi. 10.1038/ja.2008.53

By:

El-Gendy, Mervat M A;
Hawas, Usama W;
Jaspars, Marcel

Publication type:

Article