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Master's Dissertation
DOI
https://doi.org/10.11606/D.41.2011.tde-12122011-095524
Document
Author
Full name
Jóice Panzarin Savietto
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2011
Supervisor
Committee
Santos, Deborah Yara Alves Cursino dos (President)
Rodriguez, Maria Ines Genovese
Vilegas, Wagner
Title in Portuguese
Análise fitoquímica e atividade antiproliferativa de espécies nativas de Croton L. (Euphorbiaceae)
Keywords in Portuguese
Antiproliferativo
Croton
Fitoquímica
Flavonoides
Óleos voláteis
Abstract in Portuguese
Espécies de Croton são fonte abundante de metabólitos secundários, com ampla diversidade de atividades farmacológicas, muitas delas conhecidas e utilizadas popularmente. O presente projeto teve como objetivos ampliar o conhecimento sobre a química do gênero pela da prospecção de flavonoides e componentes de óleos voláteis das especies C. dichrous, C. erythroxyloides, C. myrianthus e C. splendidus, além de realizar um estudo antiproliferativo, gerando conhecimento potencial para a ampliação do emprego do gênero para a medicina de compostos naturais. Como principais compostos identificados destacam-se 1,8 cineol, α-bisabolol, ledol e linanol, nos óleos voláteis; os flavonoides tilirosídeo, rutina e vitexina e o triperpeno lupeol. Atividades antiproliferativas contra as linhagens U251 glioma, MCF-7 mama, H460 pulmão, K562 leucemia, PC-3 próstata e OVCAR-3 ovário foram observadas, com destaque para o extrato foliar de C. erythroxyloides, que teve atividade potente contra as duas últimas linhagens. O presente trabalho colaborou para a melhor elucidação da química e atividades biológicas de espécies ainda não estudadas de Croton, gênero com enorme potencial de utilização medicinal e de grande ocorrência no país.
Title in English
Phytochemical screening and antiproliferative activity of native Croton L. (Euphorbiaceae)
Keywords in English
Antiproliferative
Croton
Essential oils
Flavonoids
Phytochemistry
Abstract in English
Croton species are a great source of secondary metabolites, with a wide variety of pharmacological activities, many of these known and popularly used. This project aimed to increase knowledge about the chemistry of the genre through the exploration of flavonoids and essential oil components of the species C. dichrous, C. erythroxyloides, C. myrianthus and C. splendidus, and by antiproliferative tests, generating potential knowledge for extending the use of gender in medicine of natural compounds. The main identified compounds were 1,8 cineol, α-bisabolol, ledol and linanool present at the essential oil, the flavonoids tiliroside, rutin and vitexin and the triterpenoid lupeol. Antiproliferative activity against U251 glioma, MCF-7 mammary, H460 lung, K562 leukemia, PC-3 prostate e OVCAR-3 ovary cell lines were found, and the leaf extract of C. erythroxyloides achieved potent activity against the last two cell lines. This work contributed for the elucidation of chemistry and biological activities of unstudied species of Croton, a genre with great potential for medicinal use and large occurrence in Brazil.
 
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Publishing Date
2012-01-13
 
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