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Keywords = Hedyosmum racemosum

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20 pages, 3382 KiB  
Article
Analysis of Plant–Plant Interactions Reveals the Presence of Potent Antileukemic Compounds
by David E. Mery, Amanda J. Compadre, Paola E. Ordóñez, Edward J. Selvik, Vladimir Morocho, Jorge Contreras, Omar Malagón, Darin E. Jones, Philip J. Breen, Michael J. Balick, Flavio G. Gaudio, Monica L. Guzman and Cesar M. Compadre
Molecules 2022, 27(9), 2928; https://doi.org/10.3390/molecules27092928 - 4 May 2022
Cited by 1 | Viewed by 2751
Abstract
A method to identify anticancer compounds in plants was proposed based on the hypothesis that these compounds are primarily present in plants to provide them with an ecological advantage over neighboring plants and other competitors. According to this view, identifying plants that contain [...] Read more.
A method to identify anticancer compounds in plants was proposed based on the hypothesis that these compounds are primarily present in plants to provide them with an ecological advantage over neighboring plants and other competitors. According to this view, identifying plants that contain compounds that inhibit or interfere with the development of other plant species may facilitate the discovery of novel anticancer agents. The method was developed and tested using Magnolia grandiflora, Gynoxys verrucosa, Picradeniopsis oppositifolia, and Hedyosmum racemosum, which are plant species known to possess compounds with cytotoxic activities. Plant extracts were screened for growth inhibitory activity, and then a thin-layer chromatography bioautography assay was conducted. This located the major antileukemic compounds 1, 2, 4, and 5 in the extracts. Once the active compounds were located, they were extracted and purified, and their structures were determined. The growth inhibitory activity of the purified compounds showed a significant correlation with their antileukemic activity. The proposed approach is rapid, inexpensive, and can easily be implemented in areas of the world with high biodiversity but with less access to advanced facilities and biological assays. Full article
(This article belongs to the Special Issue Antitumoral Properties of Natural Products Ⅱ)
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14 pages, 13679 KiB  
Article
Variability of the Chemical Composition and Bioactivity between the Essential Oils Isolated from Male and Female Specimens of Hedyosmum racemosum (Ruiz & Pav.) G. Don
by Eduardo Valarezo, Vladimir Morocho, Luis Cartuche, Fernanda Chamba-Granda, Magdaly Correa-Conza, Ximena Jaramillo-Fierro and Miguel Angel Meneses
Molecules 2021, 26(15), 4613; https://doi.org/10.3390/molecules26154613 - 29 Jul 2021
Cited by 6 | Viewed by 2644
Abstract
Hedyosmum racemosum (Ruiz & Pav.) G. is a native species of Ecuador used in traditional medicine for treatment of rheumatism, bronchitis, cold, cough, asthma, bone pain, and stomach pain. In this study, fresh H. racemosum leaves of male and female specimens were collected [...] Read more.
Hedyosmum racemosum (Ruiz & Pav.) G. is a native species of Ecuador used in traditional medicine for treatment of rheumatism, bronchitis, cold, cough, asthma, bone pain, and stomach pain. In this study, fresh H. racemosum leaves of male and female specimens were collected and subjected to hydrodistillation for the extraction of the essential oil. The chemical composition of male and female essential oil was determined by gas chromatography–gas chromatography equipped with a flame ionization detector and coupled to a mass spectrometer using a non-polar and a polar chromatographic column. The antibacterial activity was assayed against five Gram-positive and two Gram-negative bacteria, and two dermatophytes fungi. The scavenging radical properties of the essential oil were evaluated by DPPH and ABTS assays. The chemical analysis allowed us to identify forty-three compounds that represent more than 98% of the total composition. In the non-polar and polar column, α-phellandrene was the principal constituent in male (28.24 and 25.90%) and female (26.47 and 23.90%) essential oil. Other main compounds were methyl chavicol, germacrene D, methyl eugenol, and α-pinene. Female essential oil presented a strong activity against Klebsiella pneumoniae (ATCC 9997) with an minimum inhibitory concentration (MIC) of 500 μg/mL and a scavenging capacity SC50 of 800 µg/mL. Full article
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