Results 241 to 250 of about 30,773 (318)

Historical chemical annotations of Cinchona bark collections are comparable to results from current day high-pressure liquid chromatography technologies.

Journal of Ethnopharmacology, 2019
ETHNOPHARMACOLOGICAL RELEVANCE Species of the genus Cinchona (Rubiaceae) have been used in traditional medicine, and as a source for quinine since its discovery as an effective medicine against malaria in the 17th century.
N. A. Canales, Tobias Nikolaj Gress Hansen, C. Cornett, K. Walker, F. Driver, A. Antonelli, Carla Maldonado, M. Nesbitt, C. Barnes, N. Rønsted   +9 more
semanticscholar   +1 more source

CINCHONA ALKALOIDS AND MALARIA

Lancet, The, 1981
exaly   +4 more sources

Liquid chromatographic enantiomer separations applying chiral ion‐exchangers based on Cinchona alkaloids

Journal of Pharmaceutical and Biomedical Analysis, 2018
HighlightsDiscussion of direct enantiomer separations based on Cinchona alkaloids.Applications of anionic and zwitterionic chiral stationary phases.Providing an overview of practical solutions.Covering the molecular recognition aspects and methodological
I. Ilisz, A. Bajtai, W. Lindner, A. Péter   +3 more
semanticscholar   +1 more source

Design and synthesis of chiral hyperbranched polymers containing cinchona squaramide moieties and their catalytic activity in the asymmetric Michael addition reaction

Journal of Catalysis, 2019
Chiral hyperbranched polymers (HBP) containing cinchona alkaloids were synthesized using a Mizoroki–Heck (MH) coupling polymerization reaction between a cinchona squaramide dimer and tri- or tetra-substituted aromatic iodides.
Sadia Afrin Chhanda, S. Itsuno
semanticscholar   +1 more source

Mass Spectra of Iso-Cinchona- and Halogenated Cinchona Alkaloids

European Journal of Mass Spectrometry, 2000
The electron impact ionisation (EI) and electrospray ionisation (ESI) mass spectra using in-source collision-induced dissociation of nine different cinchona alkaloid derivatives [iso-cinchona alkaloids (ethereal isomers) and 10-Br(Cl) containing cinchona compounds] have been studied. In the case of the EI method for iso-cinchona alkaloids the observed
Tibor Bartók, Károly Felföldi, György Szöllösi, Mihály Bartók, Zofia Dega-Szafran, Jacek Thiel   +5 more
openaire   +1 more source

Cinchona

2023
Sana Aslam, Tooba Jabeen, Matloob Ahmad, Arwa A. AL-Huqail   +3 more
openaire   +2 more sources

Organocatalysis: Cinchona catalysts

WIREs Computational Molecular Science, 2011
AbstractThe resurgence of asymmetric organocatalysis has been accompanied by the development of countless synthetic methodologies making use of Cinchona alkaloids (or their derivatives) as catalysts. Although important steps have been made in the understanding of the mode of action of this class of compounds, the development of new catalytic ...
openaire   +2 more sources

Cinchona calisaya

The allure of nature’s pharmacy has captivated humanity for millennia, manifesting in a profound relationship between humans and the botanical world. "Phytomedicine: Phytochemistry and Ethnopharmacology of Medicinal Plants" delves into this intricate and ancient bond, exploring the scientific foundations and cultural traditions that have harnessed the ...
Singh, Sushma, Sharma, Manoj Kumar
openaire   +1 more source

A Copper Catalyst with a Cinchona-Alkaloid-Based Sulfonamide Ligand for Asymmetric Radical Oxytrifluoromethylation of Alkenyl Oximes.

Angewandte Chemie, 2018
Xi-Tao Li, Qiangshuai Gu, Xiao-Yang Dong, Xiang Meng, Xin‐Yuan Liu   +4 more
semanticscholar   +1 more source

Cinchona officinalis L.Cinchona pubescens VahlRubiaceae

2020
Narel Y. Paniagua-Zambrana, Rainer W. Bussmann, Carolina Romero   +2 more
openaire   +1 more source