Constituintes químicos do caule de Protium hebetatuml (Burseraceae)

Abstract

RESUMOProtium é um gênero que se destaca na família Burceraceae, compreende cerca de 146 espécies, das quais um pequeno número tem sido estudada do ponto de vista fitoquímico. Neste trabalho, foram isolados os terpenoides α-e β-amirina, os esteroides campesterol, estigmasterol e sitosterol e a cumarina escopoletina, a partir do tronco de Protium hebetatum. As estruturas destas substâncias foram identificadas por RMN, MS, IV e por comparação com dados espectrais obtidos naa literatura e com amostras autênticas. Chemical constituents from the stem of Protium hebetatum (Burseraceae)ABSTRACT Protium is the largest genus in the Burceraceae family, which comprises about 146 species, of which a small number has been studied from the phytochemical point of view. In this work the terpenoids α-and β-amyrin, the steroids campesterol, stigmasterol and sitosterol and the coumarin scopoletin were isolated from the stem of Protium hebetatum. The structures of these substances were identified by NMR, MS, IV and comparison with spectral data from the literature and with authentic samples.

Chemical investigation, antifungal activity and anatomical aspects of Protium puncticulatum J.F Macbr. and Protium tenuifolium (Engl.) Engl

“…However, the genus has species that are difficult to identify based on only morphological characteristics (Daly, 1989). Studies related to the non-volatile chemical constituents of Amazonian species demonstrate the predominance of pentacyclic triterpenes with ursane and oleanane skeletons in leaves (Guimarães and Siani, 2007), stem bark (Zoghbi et al, 1993;Costa et al, 2012) and resins (Almeida et al, 2015;Susunaga et al, 2001); and lignans of dibenzylbutitolactone and arylnaphthalene types have been found in the trunk wood (Siqueira et al, 1995;Siani et al, 1998). As these are resinous species, there is considerable interest in studies of their essential oils, since these have high yields and their volatile constituents are predominantly monoterpenes (Lima et al, 2014;2016;Zoghbi et al, 2005;Pinto et al, 2013) and sesquiterpenes (Oliveira et al, 2018;Carvalho et al, 2010).…”

Antibacterial activity and chemical compounds of leaves and branches of Protium hebetatum

“…The extensive popular use of these species has promoted several scientific studies, which have intensified in recent years, leading to the identification of several interest pharmacological substances (Costa et al, 2012), as well as evidence of various therapeutic activities. Based on the ethnomedicinal use, it was found that ethyl ether extract of the resin of Protium kleinii showed excellent results its potent anti-inflammatory activity in topical use (Otuki et al, 2005).…”

“…Overall, triterpenes represent the most frequently occurring class of natural substances in the Protium genus (Costa et al, 2012;Silva et al, 2009;Zoghbi et al, 1993). Nevertheless, their antibacterial potential has been poorly investigated.…”

Análise fitoquímica e potencial alelopático do extrato etanólico das folhas de Protium calendulinum (Burseraceae) na germinação de Lactuca sativa

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Análise fitoquímica e potencial alelopático do extrato etanólico das folhas de Protium calendulinum (Burseraceae) na germinação de Lactuca sativa Phytochemical analysis and allelopathic potential of the ethanolic extract of the leaves of Protium calendulinum (Burseraceae) in the germination of Lactuca sativa Andreia Crizostomo Barata (1) ; Nicanor Tiago Bueno Antunes (2) ; Ruth Crisostomo Paiva (3) ; Sâmia Raysa Pinto Nogueira (4) ; Jander Savedra Nunes (5) ; Odinéia do Socorro Pamplona Freitas (6)

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