Results 71 to 80 of about 30,773 (318)
ChemistryEurope, Volume 4, Issue 3, March 2026.Chiral gem‐dicyano‐spirocyclopropyl oxindoles are obtained by a chiral N‐9‐Anth‐PyBidine‐Co(OAc)2‐catalyzed asymmetric Michael/alkylation reaction of 3‐chlorooxindoles with alkylidenemalononitriles. The three‐component coupling reaction of 3‐chlorooxindoles, aldehydes, and malononitrile shows the advantage of not requiring the preparation of ...
Takaaki Saito +4 more
wiley +1 more source
Diversidad genética y filogenia del género Cinchona en el Parque Nacional de Cutervo, Perú
Scientia Agropecuaria, 2021 Las especies del género Cinchona son reconocidas mundialmente por su eficacia en el tratamiento contra la malaria. Para el Perú, este género reviste mayor importancia a los aspectos forestal y cívico, por representar la riqueza del recurso vegetal.
Karla Andrea Peña Yacila +7 more
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Stereoselective Glycosylation of 2-Nitrogalactals Catalyzed by a Bifunctional Organocatalyst [PDF]
, 2016 The use of a bifunctional cinchona/thiourea organocatalyst for the direct and α-stereoselective glycosylation of 2-nitrogalactals is demonstrated for the first time.
Balmond, Edward +7 more
core +2 more sources
The Cinderella tree, Quillaja saponaria – A soap story
PLANTS, PEOPLE, PLANET, Volume 8, Issue 2, Page 439-451, March 2026.Our current understanding of plants has been shaped by the entwining of different cultures. The Chilean soapbark tree, traditionally valued as a source of natural soap, was shown by serendipitous research in France in the 1900s to produce compounds that can boost the immune response to vaccines.
Anne Osbourn
wiley +1 more source
Synthesis of triazol derivatives of lupeol with potential antimalarial activity
Orbital: The Electronic Journal of Chemistry, 2012 The goal of this project is synthesize and characterization of derivatives of lupeol and evaluated antimalarial activity. Historically, plants are important source of antimalarial medicines, highlighting quinine (1) (Figure 1), an important alkaloid
Tatiane Freitas Borgati +4 more
doaj +1 more source
The Study of Main Physical-chemical Parameters of Chaenomeles and Products of Its Processing [PDF]
, 2016 In the article were considered the topical problems, connected with health worsening and human existence. The use of vegetable raw material as a source of biologically active components is prospective in production foodstuff.
Boroday, A. (Anzhela) +4 more
core +2 more sources
Bitter Taste Perception in BaYaka Hunter‐Gatherers
American Journal of Human Biology, Volume 38, Issue 2, February 2026.ABSTRACT Objectives This study examined variation in bitter taste perception among BaYaka hunter‐gatherers from the Republic of Congo, comparing individuals from the same population that were born and grew up in a forest ecology to those from a logging town.
Sarai Keestra +5 more
wiley +1 more source
ChemistryOpen, Volume 15, Issue 2, February 2026.It has been found that quinic acid, an organic acid found in various plants, exhibits a high level of corrosion inhibition activity in preventing HCl‐induced corrosion and maintains its stability up to 144 h. Environmentally friendly quinic acid has a high potential for use as corrosion inhibitors in mild steel.
Serap Toprak Döşlü, Leyla Ercan
wiley +1 more source
Quinoline Alkaloids in Suspension Cultures of Cinchona ledgeriana Treated with Various Substances
Hayati Journal of Biosciences, 2010 Cinchona alkaloids are in extensive uses, not only for drugs but also for soft drink industries. They are harvested from the bark of trees Cinchona spp. after certain ages and therefore are available over a limited time.
DIAH RATNADEWI, SUMARYONO
doaj +3 more sources
Peripheral Metal Complexes: Chlorophyll “Isomers” with Magnesium Bound to the Ring E ß-Keto Ester System [PDF]
, 1978 Peripheral magnesium complexes of methyl pheophorbides a and b, bacteriomethyl pheophorbide a, bacteriopheophytin a, and protopheophytin a have been prepared and characterized by UV-vis, IR, ‘H NMR, and luminescence spectroscopy.
Katz, J. J., Scheer, Hugo
core