Works by Ayyad, Seif-Eldin N.

Results: 24

New Cytotoxic Laurene-, Cuparene-, and Laurokamurene-Type Sesquiterpenes from the Red Alga Laurencia obtusa.

Published in:

Helvetica Chimica Acta, 2014, v. 97, n. 10, p. 1388, doi. 10.1002/hlca.201300464

By:

Angawi, Rihab F.;
Hamza, Rehab I.;
Ayyad, Seif-Eldin N.;
Alarif, Walied M.;
Badria, Farid A.

Publication type:

Article

Marine Bioactive Steryl Esters from the Red Sea Black Coral Antipathes dichotoma.

Published in:

CLEAN: Soil, Air, Water, 2013, v. 41, n. 11, p. 1116, doi. 10.1002/clen.201200409

By:

Alarif, Walied M.;
Abdel ‐ lateff, Ahmed;
AL ‐ lihaibi, Sultan S.;
Ayyad, Seif ‐ Eldin N.;
Badria, Farid A.;
Alsofyani, Abdulmohsin A.;
Abou ‐ Elnaga, Zeinab S.

Publication type:

Article

Insecticidal Metabolites from the Green Alga Caulerpa racemosa.

Published in:

CLEAN: Soil, Air, Water, 2010, v. 38, n. 5/6, p. 548, doi. 10.1002/clen.201000033

By:

Alarif, Walied M.;
Abou-Elnaga, Zeinab S.;
Ayyad, Seif-Eldin N.;
Al-lihaibi, Sultan S.

Publication type:

Article

The role of new eudesmane-type sesquiterpenoid and known eudesmane derivatives from the red alga Laurencia obtusa as potential antifungal–antitumour agents.

Published in:

Natural Product Research, 2016, v. 30, n. 10, p. 1150, doi. 10.1080/14786419.2015.1046378

By:

Alarif, Walied M.;
Al-Footy, Khalid O.;
Zubair, Muhammad Sulaiman;
Halid PH, Mohamed;
Ghandourah, Mohamed A.;
Basaif, Salim A.;
Al-Lihaibi, Sultan S.;
Ayyad, Seif-Eldin N.;
Badria, Farid A.

Publication type:

Article

A review of steroids from Sarcophyton species.

Published in:

Natural Product Research, 2016, v. 30, n. 8, p. 869, doi. 10.1080/14786419.2015.1079187

By:

Zubair, Muhammad Sulaiman;
Al-Footy, Khalid O.;
Ayyad, Seif-Eldin N.;
Al-Lihaibi, Sultan S.;
Alarif, Walied M.

Publication type:

Article

New cytotoxic isoprenoid derivatives from the Red Sea soft coral Sarcophyton glaucum.

Published in:

Natural Product Research, 2015, v. 29, n. 1, p. 24, doi. 10.1080/14786419.2014.952637

By:

Abdel-Lateff, Ahmed;
Alarif, Walied M.;
Ayyad, Seif-Eldin N.;
Al-Lihaibi, Sultan S.;
Basaif, Salim A.

Publication type:

Article

Two New Bioactive Metabolites from Xestospongia sp. with Antimicrobial and Anticancer Activities.

Published in:

Chemistry of Natural Compounds, 2022, v. 58, n. 2, p. 301, doi. 10.1007/s10600-022-03664-3

By:

Angawi, Rihab F.;
Alamri, Mona M.;
Ayyad, Seif-Eldin N.;
Alotaibi, Ahmed A.;
Aly, Magda M.;
Alarif, Walied M.

Publication type:

Article

Cytotoxic Isoprenoids from the Red Sea Soft Corals Sarcophyton glaucum and Xenia umbellate.

Published in:

Journal of King Abdulaziz University: Science, 2014, v. 26, n. 2, p. 21, doi. 10.4197/Sci.26-2.2

By:

Selim, Elham A.;
Al-Footy, Khalid O.;
Ayyad, Seif-Eldin N.

Publication type:

Article

Cytotoxic and anti-bacterial evaluation of two new aromatic A-ring steroids isolated from the Red Sea soft coral Dendronephthya spp.

Published in:

Natural Product Research, 2025, v. 39, n. 1, p. 94, doi. 10.1080/14786419.2023.2254452

By:

Eissa, Ahmed H.;
Abdel-Tawab, Asmaa M.;
El-Ablack, Fawzia Z.;
Ayyad, Seif-Eldin N.

Publication type:

Article

Cytotoxic evaluation of new polyhydroxylated steroids from the Red Sea soft coral Litophyton mollis (Macfadyen, 1936).

Published in:

Natural Product Research, 2024, v. 38, n. 24, p. 4390, doi. 10.1080/14786419.2023.2284259

By:

Eissa, Ahmed H.;
Abdel-Tawab, Asmaa M.;
A.E. Hamed, El Sayed;
El-Ablack, Fawzia Z.;
N. Ayyad, Seif-Eldin

Publication type:

Article

New cytotoxic cyclic peroxide acids from Plakortis sp. marine sponge.

Published in:

ARKIVOC: Online Journal of Organic Chemistry, 2015, v. 2015, p. 164, doi. 10.3998/ark.5550190.p008.948

By:

Hoye, Thomas R.;
Alarif, Walied M.;
Basaif, Salim S.;
Abo-Elkarm, Mohamed;
Hamann, Mark T.;
Wahba, Amir E.;
Ayyad, Seif-Eldin N.

Publication type:

Article

Isolation and structure determination of the biologically active sphingolipids from marine sponge Haliclona species.

Published in:

Natural Product Research, 2009, v. 23, n. 1, p. 44, doi. 10.1080/14786410701768246

By:

Ayyad, Seif-Eldin N.;
Bahaffi, Saleh Omar S.;
Hashish, Nadia E.

Publication type:

Article

New Cytotoxic Monoalkyl Glycerol Ether from the Red Sea Soft Coral Nephthea mollis.

Published in:

Chemistry & Biodiversity, 2023, v. 20, n. 11, p. 1, doi. 10.1002/cbdv.202301208

By:

Eissa, Ahmed H.;
Abdel‐Tawab, Asmaa M.;
Hamed, El Sayed A. E.;
El‐Ablack, Fawzia Z.;
Ayyad, Seif‐Eldin N.

Publication type:

Article

Gene Expression Profiling to Delineate the Anticancer Potential of a New Alkaloid Isopicrinine From Rhazya stricta.

Published in:

Integrative Cancer Therapies, 2020, v. 19, p. 1, doi. 10.1177/1534735420920711

By:

Hajrah, Nahid H.;
Abdul, Waseem Mohammed;
Abdul-Hameed, Zainab H.;
Alarif, Walied M.;
Al-Abbas, Nouf Saeed A.;
Ayyad, Seif-Eldin N.;
Omer, Abdulkader M. Shaikh;
Mutawakil, Mohammed Zainy;
Hall, Neil;
Obaid, Abdullah Y.;
Bora, Roop Singh;
Sabir, Jamal S. M.;
Saini, Kulvinder Singh

Publication type:

Article

Cytotoxic scalarane-type sesterterpenes from the Saudi Red Sea sponge Hyrtios erectus.

Published in:

Journal of Asian Natural Products Research, 2016, v. 18, n. 6, p. 611, doi. 10.1080/10286020.2015.1115019

By:

Alarif, Walied M.;
Al-Lihaibi, Sultan S.;
Ghandourah, Mohamed A.;
Orif, Mohamed I.;
Basaif, Salim A.;
Ayyad, Seif-Eldin N.

Publication type:

Article

Cucurbitacins-type triterpene with potent activity on mouse embryonic fibroblast from Cucumis prophetarum, cucurbitaceae.

Published in:

Pharmacognosy Research, 2011, v. 3, n. 3, p. 189, doi. 10.4103/0974-8490.85006

By:

Ayyad, Seif-Eldin N.;
Abdel-Lateff, Ahmed;
Basaif, Salim A.;
Shier, Thomas

Publication type:

Article

Antioxidant, cytotoxic, antitumor, and protective DNA damage metabolites from the red sea brown alga Sargassum sp.

Published in:

Pharmacognosy Research, 2011, v. 3, n. 3, p. 160, doi. 10.4103/0974-8490.85000

By:

Ayyad, Seif-Eldin N.;
Ezmirly, Saleh T.;
Basaif, Salim A.;
Alarif, Walied M.;
Badria, Adel F.;
Badria, Farid A.

Publication type:

Article

SYNTHESIS AND BIOLOGICAL ASSESSMENT OF NEW BENZOTHIAZOLOPYRIDINE AND BENZOTHIAZOLYL-TRIAZOLE DERIVATIVES AS ANTIOXIDANT AND ANTIBACTERIAL AGENTS.

Published in:

Bulletin of the Chemical Society of Ethiopia, 2022, v. 36, n. 2, p. 451, doi. 10.4314/bcse.v36i2.17

By:

Arafat, Mahmoud;
Abdel-Latif, Ehab;
El-Taweel, Fathy M.;
Ayyad, Seif-Eldin N.;
Mohamed, Khaled S.

Publication type:

Article

Isolation, antimicrobial and antitumor activities of a new polyhydroxysteroid and a new diterpenoid from the soft coral Xenia umbellata.

Published in:

Zeitschrift für Naturforschung. Section C: A Journal of Biosciences, 2017, v. 72, n. 1/2, p. 27, doi. 10.1515/znc-2015-0228

By:

Ayyad, Seif-Eldin N.;
Alarif, Walied M.;
Al-Footy, Khalid O.;
Selim, Elham A.;
Ghandourah, Mohamed A.;
Aly, Magda M.;
Alorfi, Hajer S.

Publication type:

Article

Antiproliferative effects of triterpenoidal derivatives, obtained from the marine sponge Siphonochalina sp., on human hepatic and colorectal cancer cells.

Published in:

Zeitschrift für Naturforschung. Section C: A Journal of Biosciences, 2016, v. 71, n. 1/2, p. 29, doi. 10.1515/znc-2015-0160

By:

Abdel-Lateff, Ahmed;
Al-Abd, Ahmed M.;
Alahdal, Abdulrahman M.;
Alarif, Walied M.;
Ayyad, Seif-Eldin N.;
Al-Lihaibi, Sultan S.;
Hegazy, Mohamed E.;
Al Mohammadi, Ameen;
Abdelghany, Tamer M.;
Abdel-Naim, Ashraf B.;
Moustafa, Mohamed A.A.;
Banjer, Zainy M.;
Azhar, Ahmad S.

Publication type:

Article

Two new polyacetylene derivatives from the Red Sea sponge Xestospongia sp.

Published in:

Zeitschrift für Naturforschung. Section C: A Journal of Biosciences, 2015, v. 70, n. 11/12, p. 297, doi. 10.1515/znc-2015-5015

By:

Ayyad, Seif-Eldin N.;
Katoua, Dina F.;
Alarif, Walied M.;
Sobahi, Tariq R.;
Aly, Magda M.;
Shaala, Lamiaa A.;
Ghandourah, Mohamed A.

Publication type:

Article

Differential cytotoxic activity of the petroleum ether extract and its furanosesquiterpenoid constituents from Commiphora molmol resin.

Published in:

Zeitschrift für Naturforschung. Section C: A Journal of Biosciences, 2015, v. 70, n. 3/4, p. 87, doi. 10.1515/znc-2014-4191

By:

Ayyad, Seif-Eldin N.;
Hoye, Thomas R.;
Alarif, Walied M.;
Al Ahmadi, Sana'a M.;
Basaif, Salim A.;
Ghandourah, Mohamed A.;
Badria, Farid A.

Publication type:

Article

Cytotoxic Metabolites from Callyspongia siphonella Display Antiproliferative Activity by Inducing Apoptosis in HCT-116 Cells.

Published in:

Pharmacognosy Magazine, 2017, v. 13, p. S37, doi. 10.4103/0973-1296.203970

By:

Sobahi, Tariq R. A.;
Ayyad, Seif-Eldin N.;
Abdel-Lateff, Ahmed;
Algandaby, Mardi M.;
Alorfi, Hajer S.;
Abdel-Naim, Ashraf B.

Publication type:

Article

Cytotoxic neviotane triterpene-type from the red sea sponge Siphonochalina siphonella.

Published in:

Pharmacognosy Magazine, 2014, v. 10, n. 38/S2, p. S334, doi. 10.4103/0973-1296.133292

By:

Angawi, Rihab F.;
Saqer, Esraa;
Abdel-Lateff, Ahmed;
Badria, Farid A.;
Ayyad, Seif-Eldin N.

Publication type:

Article