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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

CONSTITUINTES QUÍMICOS DO CAULE E RAÍZ DE Salacia elliptica (Mart.) Peyr / CHEMICAL CONSTITUENTS OF stems and roots of Salacia elliptica (Mart.) Peyr

SILVA, Gilmar Aires da 25 September 2009 (has links)
Made available in DSpace on 2014-07-29T15:12:48Z (GMT). No. of bitstreams: 1 dissertacao gilmar quimica.pdf: 1338329 bytes, checksum: bc6520969a279db69b166b4914defad2 (MD5) Previous issue date: 2009-09-25 / This work describes the study of the specie Salacia elliptica, a plant from Hippocrateaceae family, known as bacupari, saputá and other popular names. In folk medicine it has been used in fever, swelling, scarring of wounds, diabetes and other treatments. The families Hippocrateaceae and Celastraceae are morphologically very close. Some taxonomists have considered them as only one family, while others split them in two. The Hippocrateaceae family comprises around 30 genera, and Salacia and Hippocratea are the most important with 300 species. Celastraceae comprises about 55 genera and 850 species. In this work, S. elliptica was considered an Hippocrateaceae plant, and by phytochemical study we intend to contribute to the chemotaxonomy position of this family. The phytochemical study of stem and root led to the isolation of the quinonamethide triterpenes: maitenin, pristimerin and 30-hydroxy-friedelan-3-one. Their structures were elucidated by 1H and 13C NMR spectra. The bioassays carried out so far demonstrate the great potential of this specie / Salacia elliptica é uma planta da família Hippocrateaceae, conhecida como bacupari, saputá entre outros nomes populares. Na medicina popular tem sido usado no tratamento da febre, edemas, cicatrizações de ferimentos, diabetes, etc. A família Hippocrateaceae é constituída por 30 gêneros, sendo Salacia e Hippocratea os maiores representantes. Há um embate entre grupos de botânicos quanto ao posicionamento taxonômico da S. elliptica devido às similaridades morfológicas e químicas entre as famílias Celastraceae e Hippocrateaceae. Neste trabalho, foi considerado que a S. elliptica é uma Hippocrateaceae. Trabalho este que busca contribuir com a quimiotaxonomia da família, através do isolamento de marcadores químicos. O estudo fitoquímico do caule e da raiz levou ao isolamento de triterpenos quinonametídeos: maitenina, pristimerina e 30-hidroxi-friedelan-3-ona, cujas estruturas foram elucidadas a partir de espectros de RMN de 1H e de 13C. Os bioensaios realizados até então demonstram o grande potencial da espécie

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