Sesquiterpenos de Ocotea lancifolia (Lauraceae)

Camargo, Maria José de; Miranda, Mayker Lázaro Dantas; Kagamida, Camila Miyuki; Rodrigues, Edilene Delphino; Garcez, Fernanda Rodrigues; Garcez, Walmir Silva

doi:10.1590/s0100-40422013000700015

Cited by 13 publications

(11 citation statements)

References 6 publications

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“…The large number of species in the genus Ocotea has attracted the interest of Brazilian phytochemical researchers . Some species of this genus are used in popular medicine due to their antirheumatic, purgative, and tonic properties, and for the treatment of stomach disorders and abscesses , among other uses. The Lauraceae family is known to contain high levels of essential oils, which are mainly present in the leaves and have different reported biological activities .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Allelopathic Potential of Leaf, Stem, and Root Extracts of Ocotea pulchella Nees et Mart

Candido

Varela

Torres

et al. 2016

Chemistry & Biodiversity

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Despite the increase in recent decades in herbicide research on the potential of native plants, current knowledge is considered to be low. Very few studies have been carried out on the chemical profile or the biological activity of the Brazilian savanna (Cerrado) species. In the study reported here, the allelopathic activity of AcOEt and MeOH extracts of leaves, stems, and roots from Ocotea pulchella Nees was evaluated. The extracts were assayed on etiolated wheat coleoptiles. The AcOEt leaf extract was the most active and this was tested on standard target species (STS). Lycopersicon esculentum and Lactuca sativa were the most sensitive species in this test. A total of eleven compounds have been isolated and characterized. Compounds 1, 2, 4, and 6 have not been identified previously from O. pulchella and ocoteol (9) is reported for the first time in the literature. Eight compounds were tested on wheat coleoptile growth, and spathulenol, benzyl salicylate, and benzyl benzoate showed the highest activities. These compounds showed inhibitory activity on L. esculentum. The values obtained correspond to the activity exhibited by the extract and these compounds may therefore be responsible for the allelopathic activity shown by O. pulchella.

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Section: Introductionmentioning

confidence: 99%

Evaluation of the Allelopathic Potential of Leaf, Stem, and Root Extracts of Ocotea pulchella Nees et Mart

Candido

Varela

Torres

et al. 2016

Chemistry & Biodiversity

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“…In previous chemical studies, those substances had been indicated as predominant in the genus Ocotea. They have been cited as responsible for the biological activities against insects, ticks and other organisms (Camargo et al, 2013;Moraes, 2012;Nogueira et al, 2014a,b). The 13 C and 1 H NMR analysis of sesquirosefuran revealed correspondence of the results with the literature data (Masahiro et al, 1982).…”

Section: Discussionmentioning

confidence: 99%

First report of the effect of Ocotea elegans essential oil on Rhipicephalus (Boophilus) microplus

Figueiredo

Nascimento

Lopes

et al. 2018

Veterinary Parasitology

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Rhipicephalus (Boophilus) microplus is responsible for reducing animal welfare, causing a drop in productive performance and transmitting hemoparasites. The main strategy of tick control is application of synthetic acaricides. However, parasite resistance to these compounds is a major concern. Therefore, the acaricidal and repellent in vitro effect of the Ocotea elegans essential oil on larvae and adult females of R. (B.) microplus were evaluated. The larval packet test (LPT), larval repellency test (RT) and adult immersion test (AIT) were performed. The essential oil was analyzed by gas chromatography (GC/FID) and the structure of the oil's major constituent (92.2% sesquirosefuran) was elucidated by nuclear magnetic resonance. In the AIT, efficacy higher than 90% was detected from the concentration 25 mg/mL upward. In both LPTs performed after 48 h, only the 100 mg/mL concentration resulted in mortalities above 70%. On the other hand, the essential oil caused an average of 95.8% repellency from 0.78 to 100 mg/mL. The LC in the two LPT (48 h) tests were 59.68 and 25.59 mg/mL, respectively. The LC and LC in the AIT were 4.96 and 17.37 mg/mL, and in the RT they were 0.04 and 1.24 mg/mL respectively. We conclude that the essential oil of O. elegans leaves has a significant acaricidal effect on engorged females and on larval repellency of R. (B.) microplus ticks, and can be a promising alternative for the control of this ectoparasite.

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“…The factors themselves and their levels were chosen based on bibliographic survey of Lauraceae, considering the most used extraction characteristics and the absence of details in Experimental Section. 21,[57][58][59] All optimization extractions (Table 3) were performed as technical triplicates in an ultrasonic bath (Unique Ultrasonic Cleaner) operating at 40 kHz for 30 minutes. Crude extracts were evaporated to dryness under vacuum before further analysis.…”

Section: Methods Evaluationmentioning

confidence: 99%

Phytochemistry by design: a case study of the chemical composition of Ocotea guianensis optimized extracts focused on untargeted metabolomics analysis

et al. 2020

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Sesquiterpenos de Ocotea lancifolia (Lauraceae)

Cited by 13 publications

References 6 publications

Evaluation of the Allelopathic Potential of Leaf, Stem, and Root Extracts of Ocotea pulchella Nees et Mart

Evaluation of the Allelopathic Potential of Leaf, Stem, and Root Extracts of Ocotea pulchella Nees et Mart

First report of the effect of Ocotea elegans essential oil on Rhipicephalus (Boophilus) microplus

Phytochemistry by design: a case study of the chemical composition of Ocotea guianensis optimized extracts focused on untargeted metabolomics analysis

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