Determination of antioxidant and antimicrobial activities of the extracts of aerial parts of Portulaca quadrifida

Autor: Zelalem Yibralign Desta, Desie Alemaw Cherie

Publikováno v: Chemistry Central Journal, Vol 12, Iss 1, Pp 1-6 (2018)

Abstract Background The extracts from the aerial parts of Portulaca quadrifida have been reported to show the total flavonoid content, antioxidant and antibacterial activities. Results Our results revealed that the total flavonoid content of methanol

Externí odkaz: https://doaj.org/article/3183236737a14609a63fb7f377503a0b

Reactions of salicylaldehyde and enolates or their equivalents: versatile synthetic routes to chromane derivatives

Autor: Ishmael B. Masesane, Zelalem Yibralign Desta

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 8, Iss 1, Pp 2166-2175 (2012)

The reported methodologies for the synthesis of chromane derivatives through the reaction of salicylaldehyde and enolates are discussed. The enolates and their equivalents involved in the reactions discussed in this article were derived from ketones,

Externí odkaz: https://doaj.org/article/8e8a2f38974948f38829abf1a24babd7

Determination of antioxidant and antimicrobial activities of the extracts of aerial parts of Portulaca quadrifida

Autor: Desie Alemaw Cherie, Zelalem Yibralign Desta

Publikováno v: Chemistry Central Journal, Vol 12, Iss 1, Pp 1-6 (2018)
Chemistry Central Journal

Background The extracts from the aerial parts of Portulaca quadrifida have been reported to show the total flavonoid content, antioxidant and antibacterial activities. Results Our results revealed that the total flavonoid content of methanol and chlo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de250fecae9c56f8131975be375ba613
https://doi.org/10.1186/s13065-018-0514-2

Cytotoxic flavonoids from Erythrina caffra Thunb

Autor: Zelalem Yibralign Desta, Norbert Sewald, Runner R. T. Majinda

Publikováno v: Bulletin of the Chemical Society of Ethiopia, Vol 30, Iss 3, Pp 427-435 (2017)
Bulletin of the Chemical Society of Ethiopia; Vol 30, No 3 (2016); 427-435

Erythrina caffra is an important medicinal plant native to South Africa. Its stem bark was investigated for the flavonoid constituents and biological activity. Some isolated flavonoids, 3 , 5 , 6 , 8 , 9 , 10 , 11 , 12 , 13 , 15 and 16 were found to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4432ae1a95cef8f697cb5944be4f1e3b
https://doi.org/10.4314/bcse.v30i3.11

Applications of Isatin Chemistry in Organic Synthesis and Medicinal Chemistry

Autor: Girija S. Singh, Zelalem Yibralign Desta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::52708adbe7f4efdb5e1171f375050f88
https://doi.org/10.1201/b13867-8