Flavonóides de quatro espécies de Paepalanthus Ruhl. (Eriocaulaceae)

Mayworm, Marco Aurélio Sivero; Salatino, Antônio

doi:10.1590/s0102-33061993000200008

Cited by 4 publications

(3 citation statements)

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“…From those data, the presence of different classes of flavonoids clearly distinguished Leiothrix Ruhland (= flavones) from Eriocaulon (= flavonols). Mayworm and Salatino (1993) investigated four species of Paepalanthus and found mainly 6-oxygenated flavonols (beyond flavones) in P. hilairei Koern. [= Actinocephalus bongardii (A Ð St.…”

Section: Introductionmentioning

confidence: 99%

Chemistry in Eriocaulaceae

Dokkedal

Santos

Sano

et al. 2008

Zeitschrift Für Naturforschung C

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Eriocaulaceae is a pantropical family that comprises about 1100 species distributed in 11 genera. The infrafamilial relationships are still unsatisfactorily resolved, because of the tiny flowers and generalized morphology, which makes the taxonomy very difficult. Flavonoid and naphthopyranone profiles have proved to be important in order to contribute to the alignment of genera into the family. We here present a survey of the chemical data of Eriocaulaceae with a discussion about their contribution to the taxonomy of Eriocaulaceae.

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Section: Introductionmentioning

confidence: 99%

Chemistry in Eriocaulaceae

Dokkedal

Santos

Sano

et al. 2008

Zeitschrift Für Naturforschung C

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“…A study by Mayworm and Salatino (1993) isolated flavonoids 2 , 10 – 15 from capitula of Paepalanthus species. Methanolic extracts of Paepalanthus bifrons , P. hilairei , P. planifolius , and P. robustus were submitted to preparative chromatography and the flavonoids were purified in a Sephadex LH-20 column [ 32 ].…”

Section: Resultsmentioning

confidence: 99%

Review on Compounds Isolated from Eriocaulaceae Family and Evaluation of Biological Activities by Machine Learning

et al. 2022

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Eriocaulaceae is a pantropical family whose main center of biodiversity is in Brazil. In general, the family has about 1200 species, in which phytochemical and biological studies have shown a variety of structures and activities. The aim of this research is to compile the compounds isolated in the Eriocaulaceae family and carry out a computational study on their biological targets. The bibliographic research was carried out on six databases. Tables were built and organized according to the chemical class. In addition, a summary of the methods of isolating the compounds was also made. In the computational study were used ChEMBL platform, DRAGON 7.0, and the KNIME 4.4.0 software. Two hundred and twenty-two different compounds have been isolated in sixty-eight species, divided mainly into flavonoids and naphthopyranones, and minor compounds. The ligand-based virtual screening found promising molecules and molecules with multitarget potential, such as xanthones 194, 196, 200 and saponin 202, with xanthone 194 as the most promising. Several compounds with biological activities were isolated in the family, but the chemical profiles of many species are still unknown. The selected structures are a starting point for further studies to develop new antiparasitic and antiviral compounds based on natural products.

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“…Other classes of secondary metabolites, most importantly flavonoids (Woodland, 1997), have been more frequently used for comparisons at lower hierarchic lev-Eriocaulaceae derives from the works of Bate- Smith and Harborne (1969) on six species of Eriocaulon, Dokkedal and Salatino (1992) on six species of Leiothrix, Mayworm and Salatino (1993) on four species of Paepalanthus and Ricci et al (1996) on 22 species of Syngonanthus. Figure 1 shows some examples of flavonoid aglycones found in Eriocaulaceae and the genera and some infrageneric categories in which the structural types predominate.…”

Section: Introductionmentioning

confidence: 99%

Distribution and evolution of secondary metabolites in Eriocaulaceae, Lythraceae and Velloziaceae from "campos rupestres"

Salatino

Santos

et al. 2000

Genet. Mol. Biol.

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els such as genera, species and infraspecific categories. Another class of compounds that has deserved much attention, not only in plant but also in insect taxonomy, are hydrocarbons, in particular alkanes (Hamilton, 1995). Both classes of secondary metabolites combine the advantages of universal occurrence in vascular plants, chemical stability and the availability of rapid isolation and identification methods (Harborne, 1998).In spite of the widespread use of secondary metabolites in taxonomy they have never achieved the same status as characters for the establishment of phyletic relationships among plant taxa as macromolecules such as proteins and nucleic acids, which have recently received much attention in molecular systematics (Hillis et al., 1996). Inferences regarding the evolution of secondary metabolites depend on comparisons with dendrograms obtained through cladistic techniques based on wide sets of "traditional" morphologic or molecular characters. This paper discusses the development of secondary metabolite patterns in taxa of three families, Eriocaulaceae, Lythraceae and Velloziaceae, which are widely distributed in the campos rupestres, mountainous ecosystems found in the Espinhaço Mountains of the Brazilian States of Minas Gerais and Bahia. We also discuss the evolution of the distribution of secondary metabolites based on recent cladistic analyses, taking into account the distribution of secondary metabolites such as the flavonoids of Eriocaulaceae and Lythraceae, the alkanes of the foliar waxes of Velloziaceae and the fatty acids of Lythraceae. FLAVONOIDS EriocaulaceaeThe Eriocaulaceae are pantropical monocotyledons readily characterized by congested capitulla. The family comprises about 1100 species of which 700 occur in the New World, particularly on higher altitude mountains in Minas Gerais and Bahia (Giulietti and Pirani, 1988 AbstractHypotheses are presented on the evolution of structural patterns of secondary metabolites (flavonoids and foliar wax alkanes) and fatty acids of families of "campos rupestres". The distribution of fatty acids is given for genera of Lythraceae, with emphasis on Cuphea (supposedly more advanced) and Diplusodon. Compounds with saturated short chains represent a derived condition in Lythraceae although they are probably restricted to Cuphea. It is suggested that evolution selected for more complex flavonoid patterns in Cuphea, with the inclusion of C-glycoflavones and methoxylated flavonols (rhamnetin and isorhamnetin), which are not found in members of Diplusodon and Lafoensia. The supposedly primitive groups of Eriocaulaceae (e.g., Paepalanthus) presented more complex flavonoid patterns characterized by flavones and flavonols, the latter frequently being 6-hydroxylated or methoxylated. More advanced groups of Eriocaulaceae (e.g., Leiothrix and Syngonanthus) apparently possess only flavones, C-glycoflavones are a salient feature of species with smaller habits. In Velloziaceae, members of the primitive subfamily Vellozioideae show distribution of alkanes of foli...

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Flavonóides de quatro espécies de Paepalanthus Ruhl. (Eriocaulaceae)

Cited by 4 publications

References 3 publications

Chemistry in Eriocaulaceae

Chemistry in Eriocaulaceae

Review on Compounds Isolated from Eriocaulaceae Family and Evaluation of Biological Activities by Machine Learning

Distribution and evolution of secondary metabolites in Eriocaulaceae, Lythraceae and Velloziaceae from "campos rupestres"

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