Zobrazeno 1 - 10
of 15
pro vyhledávání: '"José Hipólito Isaza Martínez"'
Publikováno v:
Molecules, Vol 20, Iss 10, Pp 17818-17847 (2015)
The Melastomataceae family, the seventh largest flowering plants, has been studied in several fronts of natural product chemistry, including terpenoids, simple phenolics, flavonoids, quinones, lignans and their glycosides, as well as a vast range of
Externí odkaz:
https://doaj.org/article/b24115177908497c96d5b64fe025b01b
Autor:
Claudia Lorena Valverde Malaver, Ana Julia Colmenares Dulcey, Carlos Rial, Rosa M. Varela, José M. G. Molinillo, Francisco A. Macías, José Hipólito Isaza Martínez
Publikováno v:
Molecules, Vol 24, Iss 4, p 746 (2019)
A bio-guided study of leaf extracts allowed the isolation of two new macrobicyclic hydrolysable tannins, namely merianin A (1) and merianin B (2), and oct-1-en-3-yl β-xylopyranosyl-(1„-6’)-β-glucopyranoside (3) from Meriania hernandoi, in addit
Externí odkaz:
https://doaj.org/article/5b67ced14cb342a7809b979a83a9e5b0
Publikováno v:
Formación universitaria v.10 n.2 2017
SciELO Chile
CONICYT Chile
instacron:CONICYT
SciELO Chile
CONICYT Chile
instacron:CONICYT
espanolEste estudio determina la utilizacion de mapas conceptuales como tecnica de analisis de libros de texto de calculo diferencial, con el objeto de identificar los obstaculos epistemologicos sobre la nocion derivada. La investigacion se centra en
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aba3ccd1d3cede07fa421ce9743a9f16
https://doi.org/10.4067/s0718-50062017000200007
https://doi.org/10.4067/s0718-50062017000200007
Publikováno v:
CHEMICAL & PHARMACEUTICAL BULLETIN. 64:502-506
Two new flavonol glycosides were isolated from the leaves of Siparuna gigantotepala. Their structures were determined to be kaempferol 3-O-β-xylopyranosyl-(1→2)-α-arabinofuranoside (1) and kaempferol 3,7-di-O-methyl-4'-O-α-rhamnopyranosyl-(1→2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63fccd792d316dafcd8edce1ae577c00
https://doi.org/10.1248/cpb.c15-00788
https://doi.org/10.1248/cpb.c15-00788
Autor:
Ricardo Quenguán, Freddy Moreno, José Hipólito Isaza Martínez, Johan Jurado, Carlos Humberto Martínez Cajas
Publikováno v:
Revista Estomatología. 17
Summary Objective: This study analyzes the frequency of palatal rugae on young scholars of two Colombian populations. Besides determines the variability, the sexual dimorphism and the bilateral symmetry of the palatal rugae. Materials and Methods: A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25f2ebe7050ff92b9c938cb2fb65f104
https://doi.org/10.25100/re.v17i2.5696
https://doi.org/10.25100/re.v17i2.5696
Publikováno v:
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association. 109(Pt 2)
Tithonia diversifolia, Asteraceae, a promising alternative for insect control such as leaf-cutting ants, have revealed repellent and insecticidal activity against Atta cephalotes. The different biological activities of T. diversifolia, are due to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f173c2e7c0fcfd673b9d4e9375f53f90
https://pubmed.ncbi.nlm.nih.gov/28365409
https://pubmed.ncbi.nlm.nih.gov/28365409
Publikováno v:
Journal of Chromatographic Science. 51:825-838
In the 70s, reports began to appear of phenolic metabolites of brown algae with the characteristics of tannins; these compounds, initially termed phaeophyte tannins, marine algal polyphenols or polyphloroglucinols, are known as phlorotannins, the you
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12959ccf1b95bc9c14ce4361b4999260
https://doi.org/10.1093/chromsci/bmt045
https://doi.org/10.1093/chromsci/bmt045
Publikováno v:
Revista de Ciencias, Volume: 19, Issue: 2, Pages: 117-124, Published: DEC 2015
Searching for new antioxidants used in pharmaceuticals, cosmetics or agrochemicals have increased today. Many phenolic compounds have been reported as promising for this goal. Melastomataceae is rich in these compounds. Consequently, in this research
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30c3d3d8f319377395b28c73f32a200d
http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0121-19352015000200008&lng=en&tlng=en
http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0121-19352015000200008&lng=en&tlng=en
Publikováno v:
Revista Productos Naturales. 2:6-12
Two dibenzylbutane lignans, dihydroguairetic acid and austrobailigan-6 were isolated as mixture of their diastereoisomers from the bark ethanolic extract of Dugandiodendron argyrotrichum (Magnoliaceae), a colombian endangered species. Characterizatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea515fcd68f95daef04e28af5a2a55fd
https://doi.org/10.3407/rpn.v2i1.17
https://doi.org/10.3407/rpn.v2i1.17
Publikováno v:
Repositorio Digital Univalle
Universidad del Valle
instacron:Universidad del Valle
Universidad del Valle
instacron:Universidad del Valle
Determining the antioxidant activity and the total phenolic content are routine procedures in most natural product laboratories; however, when dealing with large number of samples, it is necessary to employ methods that allow a quick, easy and econom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e82f58c1f6805b92e698e8e31740d72