Search Results - "de F. Agra, Maria"
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Tropane Alkaloids from Erythroxylum caatingae Plowman
Published in Chemistry & biodiversity (01-01-2011)“…Three tropane alkaloids, 1–3, were isolated from Erythroxylum caatingae, i.e., 6β‐benzoyloxy‐3α‐[(4‐hydroxy‐3,5‐dimethoxybenzoyl)oxy]tropane (1), a new tropane…”
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FATTY ACIDS ANALYSIS AND CHEMOTAXONOMIC CONSIDERATIONS OF MALVOIDEAE (MALVACEAE) SPECIES
Published in Química Nova (01-02-2021)“…Previous researches showed that fatty acids analysis might be a useful tool to support the taxonomic investigation. In this approach the fatty acids content of…”
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Diterpenes from Xylopia langsdorffiana
Published in Helvetica chimica acta (01-06-2013)“…The phytochemical investigation of Xylopia langsdorffiana A.St.‐Hil. & Tul. led to the isolation of eight diterpenes, i.e., of the four new compounds…”
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Bioactive Compounds from the Aerial Parts of Evolvulus linarioides
Published in Journal of natural products (Washington, D.C.) (22-05-2020)“…Three new caryophyllane-type sesquiterpenoids, linariophyllenes A–C (1–3), two new hamamelitol derivatives, linaritols A (4) and B (5), two new chromones,…”
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A new labdane diterpene from the aerial segments of Leptohyptis macrostachys (L'Hérit.) Harley & J.F.B. Pastore
Published in Phytochemistry letters (01-06-2021)“…[Display omitted] •New labdane diterpene acid from Leptohyptis macrostachys.•Structure-based and ligand-based in silico analysis of anti-tuberculosis…”
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Riachin, a new cyanoglucoside from Bauhinia pentandra and its antioxidant activity
Published in Chemistry of natural compounds (01-09-2013)“…An investigation of the root bark of Bauhinia pentandra (Fabaceae) led to the isolation and characterization of the cyanoglucoside riachin ( 1 ). The structure…”
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Spasmolytic Action of the Methanol Extract and Isojuripidine from Solanum asterophorum Mart. (Solanaceae) Leaves in Guinea-Pig Ileum
Published in Zeitschrift für Naturforschung C. A journal of biosciences (01-11-2006)“…Solanum asterophorum Mart. (Solanaceae) is a shrub popularly known as “jurubeba-defogo” in the northeast of Brazil. In the present work, the methanol extract…”
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Hyptenolide, a new α-pyrone with spasmolytic activity from Hyptis macrostachys
Published in Phytochemistry letters (01-05-2014)“…•A new α-pyrone named hyptenolide was isolated from Hyptis macrostachys Benth.•Its structure was determined based on 1D, 2D NMR techniques and CD…”
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Steroidal glycoalkaloids and molluscicidal activity of Solanum asperum Rich. fruits
Published in Journal of the Brazilian Chemical Society (2008)“…Bioassay-guided fractionation of the alkaloidal extract of the green fruits of Solanum asperum afforded a new compound, solanandaine along with solasonine and…”
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Composition and Molluscicidal Properties of Essential Oils from Leaves of Xylopia langsdorffiana A. St. Hil. et Tul. (Annonaceae)
Published in The Journal of essential oil research (01-05-2007)“…The volatile fraction of Xylopia langsdorffiana leaves was analyzed by GC and GC/MS and tested for molluscicidal activity. With this methodology 19 different…”
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Others flavonoids from Ouratea hexasperma (Ochnaceae)
Published in Journal of the Brazilian Chemical Society (01-06-2005)“…Chromatographic fractionation of the extracts from the leaves of Ouratea hexasperma (Ochnaceae) afforded a new flavone dimer…”
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Extratos metanólico e acetato de etila de Solanum megalonyx Sendtn. (Solanaceae) apresentam atividade espasmolítica em íleo isolado de cobaia: um estudo comparativo
Published in Revista brasileira de farmacognosia (01-06-2006)“…Solanum megalonyx Sendtn. (Solanaceae) é conhecida popularmente por "jurubeba" no Nordeste do Brasil e se apresenta na forma de arbusto. Várias espécies de…”
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