Gari Ccana-Ccapatinta

• University of São Paulo

Despite their relatively poorly investigated phytochemistry, species of the genus Chuquiraga are widely commercialized. The present study reports the use of a high-resolution liquid chromatography-mass spectrometry-based metabolomics approach coupled with exploratory and supervised multivariate statistical analyses for species classification and ch...

Propolis is a natural product extensively used in the drug and food industry around the world due to its medicinal properties. Among the most prominent types of propolis in the world there is the red type, and one of its production centers is the Brazilian northeast. Several biological activities from Brazilian red propolis have been studied and it...

Red propolis is a substance produced by bees by mixing resins from plants with wax, oils, and other secretions to protect the hive against natural enemies. Dalbergia ecastaphyllum (L.) Taub. (Fabaceae) is the primary botanical source of the Brazilian red propolis, where bees Apis mellifera L. collect a reddish resin from the stems to produce propol...

Species of the genus Chuquiraga Juss., Asteraceae, Barnadesioideae, are widely marketed in South America as medicinal plants, despite their relatively uncharacterized phytochemistry. The present study aimed to profile phenolic compounds in commercial samples of three Chuquiraga species (C. jussieui J.F.Gmel., C. spinosa Less., and C. weberbaueri To...

Wild plants are consumed as food mainly during periods of famine and by poorer populations but could be alternatives to improve food variety in regions with high biodiversity. Wild edible plants can be a rich source of nutrients and/or dietary phytochemicals (secondary metabolites), but there has thus far been a lack of studies comparing the chemic...

Propolis is one of the most widely used products in traditional medicine. One of the most prominent types of Brazilian propolis is the red one, whose primary botanical source is Dalbergia ecastaphyllum (L.) Taub. Despite the potential of Brazilian red propolis for developing new products with pharmacological activity, few studies guarantee safety i...

Ethnopharmacological relevance Propolis has been used in folk medicine to treat gastric disorders for centuries. However, although studies have been conducted to validate the gastroprotective and anti-ulcer activity of some types of propolis, red propolis activity remains unknown. Aim of the study The present study aimed to evaluate the gastroprot...

Propolis is a natural product produced from the interaction between bees and plants. Brazilian red propolis results from Apis mellifera collection of resins from two plant species, being Dalbergia ecastaphyllum (L.) Taub, Fabaceae, the primary botanical source, containing isoflavonoids and other characteristic phenolic compounds. Several biological...

Gold nanoparticles (AuNPs) are highlighted due to their low toxicity, compatibility with the human body, high surface area to volume ratio, and surfaces that can be easily modified with ligands. Biosynthesis of AuNPs using plant extract is considered a simple, low-cost, and eco-friendly approach. Brazilian Red Propolis (BRP), a product of bees, exh...

Dasyphyllum Kunth is the most diverse genus of the South American subfamily Barnadesioideae (Asteraceae), comprising 31 species most of which are distributed along the Brazilian Atlantic Forest, Cerrado and Caatinga domains. The genus has traditionally been divided into two subgenera, namely Archidasyphyllum and Dasy-phyllum. However, recent phylog...

Smallanthus sonchifolius (yacon) is an edible tuberous Andean shrub that has been included in the diet of indigenous people since before recorded history. The nutraceutical and medicinal properties of yacon are widely recognized, especially for the improvement of hyperglycemic disorders. However, the chemical diversity of the main bioactive series...

Emilia fosbergii is a member of the tribe Senecioneae (Asteraceae), most species of which contain pyrrolizidine alkaloids. Notwithstanding, the phytochemistry of E. fosbergii is poorly understood, and pyrrolizidine alkaloids produced by this species have yet to be characterized. In this work, the presence of 11 pyrrolizidine alkaloids, three caffeo...

The Brazilian red propolis (BRP) constitutes an important commercial asset for northeast Brazilian beekeepers. The role of Dalbergia ecastaphyllum (L.) Taub. (Fabaceae) as the main botanical source of this propolis has been previously confirmed. However, in addition to isoflavonoids and other phenolics, which are present in the resin of D. ecastaph...

The phytochemical composition of Arnaldoa species is barely known. In this work, the occurrence of caffeic acid ester derivatives and flavonoids in A. argentea, A. macbrideana and A. weberbaueri was established by liquid chromatography associated to high-resolution mass spectrometry analyses and comparison with data from isolated compounds. The dis...

Glandularia selloi (Verbenaceae) presents phenylethanoids, iridoids and flavone glycosides as the main constituents. Two novel chrysoeriol derivatives, selloiside A (1) and selloiside B (2) were isolated from the methanolic extract of the aerial parts. Both flavones are acylated disaccharides. Two known compounds, verbascoside (3) and 6β-hydroxy-ip...

Lipophilic extracts of Hypericum species are described to possess diverse potential bioactivities, however there is no report on the potential anti-inflammatory activity of Peruvian Hypericum species. Investigating the chemo- tactic ability plays an important role in the study of new anti-inflammatory agents. Thus, the present research aimed to ass...

The subfamily Barnadesioideae (Asteraceae) constitutes a group of spiny plants that are entirely restricted to South America and currently encompasses 92 species distributed in nine genera. Barnadesioideae is particularly interesting because this subfamily constitutes the sister group of all other Asteraceae, and provides insights into the early ev...

Bioactive molecules isolated from plants are promising sources for the development of new therapies against leishmaniasis. We investigated the leishmanicidal activity of cariphenone A (1), isouliginosin B (2) and uliginosin B (3) isolated from Hypericum species. Promastigotes and amastigotes of Leishmania amazonensis were incubated with compounds 1...

Recently, it was observed that infrared (IR) and vibrational circular dichroism (VCD) calculations including deuterated hydroxyl groups in phenolic and saccharide moieties improved significantly the agreement with experimental data obtained in methanol-d 4. In the present study, the relative and absolute configurations of three methanol-soluble caf...

New key molecular targets for parasites causing Neglected Diseases (NDs) have been discovered1. Among them stands out the flavoenzyme dihydroorotate dehydrogenase (DHODH), a potential target for screening samples with antiprotozoal activity. This enzyme catalyzes the fourth reaction of the de novo pyrimidine biosynthetic pathway, which exerts vital...

This work describes the isolation of seven (1–7) secondary metabolites from Espeletia barclayana (Asteraceae, Espeletiinae) and their identification by spectroscopic (NMR) and spectrometric (MS) techniques. Ten (8–17) additional compounds were identified based on their retention times, high-resolution mass spectrometry data, and comparison with ref...

In this study, a phytochemical and biological investigation on five South Brazilian Hypericum species (Hypericum caprifoliatum, Hypericum carinatum, Hypericum connatum, Hypericum myrianthum, and Hypericum polyanthemum) was carried out. The phloroglucinol-enriched fractions (PEF) of the flowering aerial parts were analyzed by high-performance liquid...

In the present work we report for the first time, a detailed procedure for the reproducible isolation of compounds 1 and 2 with no derivatization process by using three chromatographic techniques. Both chromanones play an important role in the anti-H. pylori activity of n-hexane extract of the stem bark of Calophyllum. brasiliense.

In the present work we report for the first time, a detailed procedure for the reproducible isolation of compounds 1 and 2 with no derivatization process by using three chromatographic techniques. Both chromanone acids are responsible, at least in part, for the bacteriostatic activity of n-hexane extract of Calophyllum brasiliense stem bark.

Three dimeric acylphloroglucinols, austrobrasilol A, austrobrasilol B and isoaustrobrasilol B were isolated from the flowers of Hypericum austrobrasiliense (Hypericaceae, section Trigynobrathys). Their structures were elucidated using mass spectrometry and NMR experiments (1D and 2D), and by comparison with previously reported data for other dimeri...

A new dimeric acylphloroglucinol derivative, hyperlaricifolin (1), and two new monomeric acylphloroglucinols, laricifolin A (2) and laricifolin B (3), were isolated from an extract of the aerial parts of Hypericum laricifolium Juss., along with the four known dimeric acylphloroglucinols uliginosin B, isouliginosin B, hyperbrasilol B, and isohyperbr...

The antidepressant-like activity of crude ethanolic extracts (CEE) from four Peruvian Hypericum species (Hypericum andinum, Hypericum brevistylum, Hypericum silenoides and Hypericum laricifolium) was assessed using the forced swimming test (FST) in mice. Different doses of all CEE shortened the immobility time of mice in experimental groups, indica...

Unlabelled: Leishmaniasis has emerged as the third most prevalent parasite-borne disease worldwide after malaria and filariasis, with about 350 million people at risk of infection. Antileishmanial drugs currently available have various limitations, mainly because of the parasite resistance and side effects. The search of new antileishmanial drugs...

A new dimeric acylphloroglucinol derivative, andinin A (1), was isolated from the underground plant parts of Hypericum andinum, along with three known dimeric acylphloroglucinols, uliginosin A (2), uliginosin B (3), and isouliginosin B (4). The structure of 1 was elucidated using 1D and 2D NMR and MS experiments and by comparison with previously re...

The flowers constitute one of the main sites of accumulation of phenolic compounds in plants of the Hypericum genus. In addition to their important pharmacological activities, some metabolites found in species from the section Brathys and Trigynobrathys appear to have chemotaxonomic significance according to the literature. HPLC analyses were carri...

Hypericum is a prolific source of acylphloroglucinol derivatives. Unlike the monomeric polyisoprenylated acylphloroglucinols hyperforin and adhyperforin, which are the main phloroglucinols in Hypericum perforatum (section Hypericum), dimeric structures are to the best of our knowledge exclusively reported in sections Brathys and Trigynobrathys belo...