Results 121 to 130 of about 225,386 (346)

Synthesis of the reported structure of piperazirum using a nitro-Mannich reaction as the key stereochemical determining step

Beilstein Journal of Organic Chemistry, 2013
Piperazirum, isolated from Arum palaestinum Boiss, was originally assigned as r-3,c-5-diisobutyl-c-6-isopropylpiperazin-2-one. The reported structure was synthesised diastereoselectively using a key nitro-Mannich reaction to set up the C5/C6 relative ...
James C. Anderson, Andreas S. Kalogirou, Michael J. Porter, Graham J. Tizzard   +3 more
doaj   +1 more source

Phytochemical Profile and Anticancer Activity of Achillea conferta Leaf Extracts: Insights Into Antioxidant Properties

Chemistry &Biodiversity, EarlyView.
ABSTRACT This study explores the phytochemical composition and biological potential of extracts from Achillea conferta leaves, specifically hydroethanolic extract (HE), total flavonoid extract (TFE), and glycoside flavonoid extract (GFE). Phytochemical screening of HE revealed significant concentrations of phenolic compounds, flavonoids, and tannins ...
Mhmood Shakoori Yaseen, Rafah Razooq Hameed Al‐Samarrai, Mohamed Bouaziz, Sami Zouari   +3 more
wiley   +1 more source

THE ECONOMICAL USE OF SOLUTIONS OF COSTLY ALKALOIDS FOR OPHTHALMIC PURPOSES [PDF]

, 1916
N. B. Harman
openalex   +1 more source

Green Propolis Extract‐Mediated Synthesis of Biogenic Silver Nanoparticles: In vitro Antileishmanial and Antibacterial Activities, Cytotoxicity and Ex vivo Irritation Testing

Chemistry &Biodiversity, Accepted Article.
This study describes the green synthesis, characterization, and biological evaluation of silver nanoparticles (AgNPs) obtained from green propolis (AgNPs‐PRO). Prior to nanoparticles synthesis, a hydroethanolic green propolis extract (GPE) was obtained through Ultrasound Assisted Extraction, and characterized by High Performance Liquid Chromatography ...
Erica Tirzah S. Lima, Victoria L. S. Santos, Wanessa J. S. Mota, Frederico S. Martins, Ricardo L. C. de Albuquerque-Junior, André L. S. Santos, Simone S. C. Oliveira, Jéssica A. de Lima, Adriana de Jesus Santos, Cochiran P. dos Santos, Sona Jain, Eliana B. Souto, Juliana C. Cardoso, Patrícia Severino   +13 more
wiley   +1 more source

Phytochemicals in Cancer Therapy: A Structured Review of Mechanisms, Challenges, and Progress in Personalized Treatment

Chemistry &Biodiversity, Accepted Article.
Objective: Cancer remains a global health challenge, necessitating new therapeutic options. Phytochemicals, with diverse chemical structures and biological activities, show promise as anticancer agents. This review explores key phytochemicals, their mechanisms, and their potential integration into cancer therapy.
Alaa A. A. Aljabali, Mohammad A. Obeid, Rasha M. Bashatwah, Esam Qnais, Omar Gammoh, Abdelrahim Alqudah, Vijay Mishra, Yachana Mishra, Mohammad Ahmed Khan, Suhel Parvez, Mohamed El-Tanani, Taher Hatahet   +11 more
wiley   +1 more source

The Separation and Identification of Ergot Alkaloids by Paper Partition Chromatography [PDF]

, 1949
G E Foster, Miss J MacDonald, Tudor S. G. Jones   +2 more
openalex   +1 more source

LC‐DAD‐MSn and HR‐LC‐QTOF analysis of Ziziphus budhensis leaves and evaluation of their in vitro and in vivo biological activities

Chemistry &Biodiversity, Accepted Article.
Ziziphus budhensis is a species described in 2015 in Nepal poorly studied for its phytochemical composition and possible bioactivities. In this study, six extracts were obtained from Z. budhensis leaves using ultrasound assisted extraction with solvents in increasing polarity.
Samjhana Bharati, Binita Maharjan, Timila Shrestha, Shyam Sharan Shrestha, Stefania Sut, Hari Prasad Devkota, Ram Lal Swagat Shrestha, Stefano Dall'Acqua   +7 more
wiley   +1 more source

Promising Prodiginins Biological Activities

Chemistry &Biodiversity, EarlyView.
ABSTRACT Prodiginins are a large family of at least 34 pyrrolic compounds, including the well‐studied red pigment prodigiosin. Prodiginins are produced by several microorganisms displaying broad biological activities, including antimicrobial, antiviral, antiparasitic, antiproliferative, and immunosuppressive activities.
María F. Ladetto, Melisa E. Gantner, Boris E. Rodenak‐Kladniew, Santiago Rodriguez, María L. Cuestas, Alan Talevi, Guillermo R. Castro   +6 more
wiley   +1 more source

On the Photo-transformation of Ergot Alkaloids. [PDF]

, 1957
Hans Hellberg, A.C. Maehly, S. Nordlander   +2 more
openalex   +1 more source

Bioactive Compound Characterization and Phytopharmacological Potentials of Tulbaghia violacea Fruits and Seeds

Chemistry &Biodiversity, EarlyView.
Flow chat for the quantitative and qualitative profiles and the biological activities of T. violacea fruits and seeds. ABSTRACT Tulbaghia violacea is an established medicinal plant that is indigenous to southern Africa. All its plant parts have been profiled for their phytochemical constituents and medicinal potentials except for the seeds and fruits ...
Rebecca Opeyemi Oyerinde, Ida Masana Risenga   +1 more
wiley   +1 more source