Iridoids
Mostrando 13-20 de 20 artigos, teses e dissertações.
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13. Perfil FitogrÃfico e FarmacolÃgico da Aspidosperma pyriolium mart. "Ensaios prÃ-clÃnicos"
The use of natural products has been growing remarkably in recent years. The search pharmacology of medicinal plants has not only brought about important advances for the treatment of various diseases, but also has provided extremely useful tools for the theoretical study of physiology and pharmacology. Aspidosperma pyrifolium Mart. occurs in the caatinga an
Publicado em: 2008
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14. IridÃides glicosilados das raÃzes de Lippia alba (Mill.) N. E. Brown
The present work focuses the isolation, characterization and bioactivity, of iridoids glucosides from the roots of Lippia alba (Mill.) N. E. Brown, as well as the chemotype evaluation. Itâs a notable plant in the traditional medicine in our country, where it is known as âerva-cidreiraâ, âchÃ-do-abuleiroâ, âerva-cidreira-de-arbustoâ, âalecrimselvagem
Publicado em: 2007
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15. A new antifungal phenolic glycoside derivative, iridoids and lignans from Alibertia sessilis (vell.) k. schum. (Rubiaceae)
Um novo derivado fenólico glucosilado antifúngico, 3,4,5-trimetoxifenil-1-O-beta-D-(5-Osiringoila)-apiofuranosil-(1->6)-beta-D-glicopiranosideo (1), juntamente com quatro iridóides conhecidos, ácido geniposídico (2), geniposídeo (3), 6alfa-hidroxigeniposideo (4) e 6betahidroxigeniposideo (5); duas lignanas, (+)-lioniresinol-3alfa-O-beta-D-glicopiranosi
Journal of the Brazilian Chemical Society. Publicado em: 2007
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16. Novos constituintes químicos das cascas do caule de Tabebuia heptaphylla
A new triterpene, 3beta,6beta,21beta-trihydroxyolean-12-ene and a new iridoid, 8alpha-methyl-8beta-hydroxy-6beta-(3',4'-dimethoxy)benzoyloxy-1 alpha,3alpha-dimethoxy-octahydro-cyclopenta[c]pyran were isolated from the trunk bark of a specimen of Tabebuia heptaphylla (Bignoniaceae) collected in the "Pantanal" of Mato Grosso do Sul, Brazil. Twelve known compou
Química Nova. Publicado em: 2007
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17. Estudo farmacognÃstico e determinaÃÃo da atividade biolÃgica de Vitex gardneriana Schauer (Verbenaceae)
Vitex gardneriana Schauer - Verbenaceae is a shrub encountered in the Brazilian northeastâs ecosystem âcaatingaâ. It is popularly called âjaramataiaâ, âjeremataiaâ, âgirimatoâ, âtamancaâ or âtamanqueiraâ. In the folk medicine, the leaves of V. gardneriana are used as sedative and anti-inflammatory. This work describes pharmacobotanical, phytoche
Publicado em: 2004
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18. Iridoids from Vitex cymosa
Este trabalho descreve o isolamento e a identificação, a partir de folhas de Vitex cymosa, de um novo iridóide não glicosídico chamado tarumal, além dos já conhecidos viteóide II e agnusídio.
Journal of the Brazilian Chemical Society. Publicado em: 2001-12
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19. Biosynthesis significance of iridoids in chemosystematics
Iridóides são substâncias monoterpenoídicas formadas em plantas por uma ciclização alternativa do pirofosfato de geranila. A estrutura química dessas substâncias é baseada no esqueleto ciclopentano-[C]-pirano, iridóides carbocíclicos, e a clivagem oxidativa da ligação 7,8 do anel ciclopentano fornece os chamados secoiridóides. Sob o aspecto bio
Journal of the Brazilian Chemical Society. Publicado em: 2001-04
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20. Selective transport systems mediate sequestration of plant glucosides in leaf beetles: A molecular basis for adaptation and evolution
Chrysomeline larvae respond to disturbance and attack by everting dorsal glandular reservoirs, which release defensive secretions. The ancestral defense is based on the de novo synthesis of monoterpene iridoids. The catabolization of the host-plant O-glucoside salicin into salicylaldehyde is a character state that evolved later in two distinct lineages, whic
National Academy of Sciences.