Results 21 to 30 of about 1,420,273 (199)

Comparative Study of Cinchona Cinnamon Bark

open access: yesInternational Journal of Advanced Research in Science, Communication and Technology, 2023
Cinchona which belongs to family Rubiaceae, got its importance from the centuries because of its antimalarial activity. Alkaloids present in this herb, quinine, chichonine, quinidine and cinchonidine are the main, but percentage may vary in species to ...
Prof Omkar Rajaram Gosavi   +7 more
semanticscholar   +1 more source

H22 Barking up the right tree: history of quinine

open access: yesBritish Journal of Dermatology, 2023
Quinine is considered to be one of the most important medical discoveries of the 17th century through its use in treating malaria. Since then, its applications have expanded, and quinine continues to be one of the most widely used drugs in dermatology.
Alphonsus Yip   +2 more
semanticscholar   +1 more source

Artemisinin

open access: yesHIMALAYA, 2019
Malaria is a disease that has blighted humankind since early times. The first antimalarial treatment available to Europeans was the dried bark of the cinchona tree from Peru. The main problem in its use was adulteration by other material.
Anthony Butler
doaj   +1 more source

The Diarylprolinol Silyl Ethers: After 20 Years Still Opening New Doors in Asymmetric Catalysis

open access: yesAngewandte Chemie, Volume 138, Issue 11, 9 March 2026.
Catalysis Rules! The year 2025 marks the 20th anniversary of diarylprolinol silyl ethers in asymmetric organocatalysis. During the first decade after their discovery, these catalysts have been established as one of the most versatile tools in aminocatalysis. Although now considered mature, recent years have witnessed renewed innovation.
Enrico Marcantonio   +2 more
wiley   +2 more sources

Quinina: 470 anos de história, controvérsias e desenvolvimento Quinine: 470 years of history, controversy and science development

open access: yesQuímica Nova, 2009
After 470 years, a history of development, international seed smuggling and scientific development that caused deep changes in our society, has reached an end. In 1638, the countess of Chinchón contracted a disease while in the Amazon rain forest and was
Alfredo Ricardo Marques de Oliveira   +1 more
doaj   +1 more source

Do species differ in their ability to coexist with the dominant alien Lupinus polyphyllus? : A comparison between two distinct invaded ranges and a native range [PDF]

open access: yes, 2013
The community-level impacts of invasive plants are likely to vary depending on the character of native species of the target communities and their ability to thrive within the stands of the dominant alien invader.
Hejda, Martin
core   +2 more sources

Influence of Cinchona officinalis (Rubiaceae) seedling size on survival and stem deformation after replanting

open access: yesRevista Cubana de Ciencias Forestales, 2021
Cinchona officinalis, known as cinchona tree, is a species of high medicinal value that became popular for its antimalarial and febrifuge properties and is listed as an endangered species.
Franklin Hitler Fernandez Zarate   +3 more
doaj  

Naturalists' Practices and Nature's Empire: Paris and the Platypus, 1815-1833 [PDF]

open access: yes, 2001
Among the multiple interactions between governments and museums that were so important for the growth of natural history in the nineteenth century, perhaps none looked more promising at its inception than did the special "school for naturalist ...
Burkhardt, Richard W Jr.
core   +1 more source

Multiplicación clonal del árbol de la quina (Cinchona officinalis): una alternativa para conservar el árbol nacional de Perú

open access: yes, 2021
Clonal multiplication of the cinchona tree ( Cinchona officinalis L.): an alternative to conserve the national tree of Peru The cinchona tree ( Cinchona officinalis ), an emblematic species of Peru, has for many years been threatened with extinction. The

semanticscholar   +1 more source

PHYLOGENETIC RELATIONSHIPS AMONG WEST INDIAN XENODONTINE SNAKES (SERPENTES; COLUBRIDAE) WITH COMMENTS ON THE PHYLOGENY OF SOME MAINLAND XENODONTINES [PDF]

open access: yes, 1999
The evolutionary relationships of the West Indian (W. I.) xenodontine snake assemblage has been considered as either monophyletic or paraphyletic. Allozyme data from protein electrophoresis were used to estimate the phylogeny of the W. I.
Crother, Brian I.
core   +2 more sources

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