Search Results - "Crotti, Antonio E.M"

Gas‐phase fragmentation reactions of protonated benzofuran‐ and dihydrobenzofuran‐type neolignans investigated by accurate‐mass electrospray ionization tandem mass spectrometry by Dias, Herbert J., Baguenard, Manon, Crevelin, Eduardo J., Palaretti, Vinicius, Gates, Paul J., Vessecchi, Ricardo, Crotti, Antônio E.M.

“…We have investigated gas‐phase fragmentation reactions of protonated benzofuran neolignans (BNs) and dihydrobenzofuran neolignans (DBNs) by accurate‐mass…”
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Fragmentation of 2‐aroylbenzofuran derivatives by electrospray ionization tandem mass spectrometry by Dias, Herbert J., Vieira, Tatiana M., Crevelin, Eduardo J., Donate, Paulo M., Vessecchi, Ricardo, Crotti, Antônio E.M.

“…We investigated the gas‐phase fragmentation reactions of a series of 2‐aroylbenzofuran derivatives by electrospray ionization tandem mass spectrometry…”
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Gas‐phase fragmentation reactions of protonated cocaine: New details to an old story by Dias, Herbert J., Bento, Mariana V. B., Silva, Éder H., Saturnino‐Júnior, Andrade, Oliveira, Marcelo F., Vessecchi, Ricardo, Parreira, Renato L. T., Crotti, Antônio E. M.

“…We have used a combination of multiple stage mass spectrometry (MSn) experiments, hydrogen/deuterium exchange experiments, and thermochemical data estimated by…”
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Dereplication of Streptomyces sp. AMC 23 polyether ionophore antibiotics by accurate-mass electrospray tandem mass spectrometry by Crevelin, Eduardo J., Crotti, Antônio E. M., Zucchi, Tiago D., Melo, Itamar S., Moraes, Luiz A. B.

“…Actinomycetes, especially those belonging to the genus Streptomyces, are economically important from a biotechnological standpoint: they produce antibiotics,…”
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In vitro efficacy of the essential oil of Piper cubeba L. (Piperaceae) against Schistosoma mansoni by Magalhães, Lizandra G., de Souza, Julia M., Wakabayashi, Kamila A. L., da S. Laurentiz, Rosangela, Vinhólis, Adriana H. C., Rezende, Karen C. S., Simaro, Guilherme V., Bastos, Jairo K., Rodrigues, Vanderlei, Esperandim, Viviane R., Ferreira, Daniele S., Crotti, Antônio E. M., Cunha, Wilson R., e Silva, Márcio L. A.

“…In this paper, cercariae, schistosomula, and adult Schistosoma mansoni worms were incubated in vitro with the essential oil of Piper cubeba (PC-EO) at…”
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Synthesis of 7-Hydroperoxycholesterol and Its Separation, Identification, and Quantification in Cholesterol Heated Model Systems by Nogueira, Gislaine C, Costa, Bruna Z, Crotti, Antonio E. M, Bragagnolo, Neura

“…7-Hydroperoxycholesterol is considered to be an intermediate compound of the cholesterol oxidation path as the first product formed when cholesterol is…”
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Gas-phase fragmentation of γ-lactone derivatives by electrospray ionization tandem mass spectrometry by Crotti, Antonio E.M, Bronze-Uhle, Erika S, Nascimento, Paulo G.B.D, Donate, Paulo M, Galembeck, Sérgio E, Vessecchi, Ricardo, Lopes, Norberto P

“…Fragmentation reactions of β-hydroxymethyl-, β-acetoxymethyl- and β-benzyloxymethyl-butenolides and the corresponding γ-butyrolactones were investigated by…”
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Fragmentation of diketopiperazines from Aspergillus fumigatus by electrospray ionization tandem mass spectrometry (ESI-MS/MS) by Furtado, Niege A.J.C, Vessecchi, Ricardo, Tomaz, José Carlos, Galembeck, Sérgio E, Bastos, Jairo K, Lopes, Norberto P, Crotti, Antonio E.M

“…Diketopiperazines (DKPs) corresponding to cyclic dipeptides have been reported to exhibit antimicrobial, antitumor, antimutagenic and antiviral properties…”
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Gas-phase dissociation of 1,4-naphthoquinone derivative anions by electrospray ionization tandem mass spectrometry by Vessecchi, Ricardo, Carollo, Carlos A, Lopes, José N.C, Crotti, Antonio E.M, Lopes, Norberto P, Galembeck, Sérgio E

“…Gas-phase dissociation pathways of deprotonated 1,4-naphthoquinone (NQ) derivatives have been investigated by electrospray ionization tandem mass spectrometry…”
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Chemical composition and antibacterial activity of essential oils from Citrus aurantifolia leaves and fruit peel against oral pathogenic bacteria by Lemes, Raiane S, Alves, Cassia C F, Estevam, Elisângela B B, Santiago, Mariana B, Martins, Carlos H G, Santos, Tainá C L Dos, Crotti, Antônio E M, Miranda, Mayker L D

“…Tooth decay is a major public health problem which affects a large number of people in several countries. Even though more than 700 bacterial species have been…”
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Fragmentation reactions using electrospray ionization mass spectrometry: an important tool for the structural elucidation and characterization of synthetic and natural products by Demarque, Daniel P, Crotti, Antonio E M, Vessecchi, Ricardo, Lopes, João L C, Lopes, Norberto P

“…Over the last decade, the number of studies reporting the use of electrospray ionization mass spectrometry (ESI-MS) in combination with collision cells (or…”
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Chemical composition and evaluation of antileishmanial and cytotoxic activities of the essential oil from leaves of Cryptocarya aschersoniana Mez. (Lauraceae Juss.) by Andrade, Priscila M DE, Melo, Daiana C DE, Alcoba, Ana Elisa T, Ferreira Júnior, Walnir G, Pagotti, Mariana C, Magalhães, Lizandra G, Santos, Tainá C L Dos, Crotti, Antônio E M, Alves, Cassia C F, Miranda, Mayker L D

“…Leishmaniasis is an endemic disease caused by protozoa of the genus Leishmania, which affects around two million people worldwide. One major drawback in the…”
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Chemical Composition and Antibacterial Activity of the Essential Oil of Vitex agnus-castus L. (Lamiaceae) by Gonçalves, Regiane, Ayres, Vanessa F S, Carvalho, Carlos E, Souza, Maria G M, Guimarães, Anderson C, Corrêa, Geone M, Martins, Carlos H G, Takeara, Renata, Silva, Eliane O, Crotti, Antônio E M

“…Abnormal multiplication of oral bacteria causes dental caries and dental plaque. These diseases continue to be major public health concerns worldwide, mainly…”
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In vitro anti-Trypanosoma cruzi activity enhancement of curcumin by its monoketone tetramethoxy analog diveratralacetone by Souza, Julia M., Vieira, Tatiana M., Candido, Ana Carolina B.B., Tezuka, Daiane Y., Rao, G. Subba, de Albuquerque, Sérgio, Crotti, Antônio E.M., Siqueira-Neto, Jair L., Magalhães, Lizandra G.

“…Chagas disease is a tropical disease caused by the protozoan parasite Trypanosoma cruzi and currently affects millions of people worldwide. Curcumin (CUR), the…”
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Isolation and detailed 1H and 13C NMR structural assignment for three trachylobanes from Psiadia punctulata (Asteraceae) grown in Africa by Ferreira, Alexsandro E., Rocha, Ana Carolina F.S., Pavan, Julian C.S., Palaretti, Vinícius, Oliveira, Thaís A.S., Midiwo, Jacob O., Crotti, Antonio E.M., Heleno, Vladimir C.G.

“…[Display omitted] •New NMR data for three trachylobanes, are presented for the first time in Literature.•The presented data completely clarified the 1H and 13C…”
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The fragmentation mechanism of five-membered lactones by electrospray ionisation tandem mass spectrometry by Crotti, Antônio E.M, Fonseca, Tatiana, Hong, Hui, Staunton, James, Galembeck, Sérgio E, Lopes, Norberto P, Gates, Paul J

“…A series of five-membered lactones (both saturated and unsaturated) and a lactam were analysed by electrospray ionisation tandem (ESI-MS/MS) and sequential…”
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Microwave-Assisted Synthesis and Antileishmanial Activity of 3-methoxycarbonyl-γ-butyrolactone Derivatives by Pinatto-Botelho, Marcos F., Crotti, Antonio E. M., Souza, Julia M. de, Magalhães, Lizandra G., Donate, Paulo M.

“…We describe the microwave-assisted synthesis of ten 3-methoxycarbonyl-γ-butyrolactone derivatives and evaluate their in vitro antileishmanial activity against…”
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Fragmentation of plumeran indole alkaloids from Aspidosperma spruceanum by electrospray ionization tandem mass spectrometry by Aguiar, Gabriela P., Wakabayashi, Kamila A. L., Luz, Guilherme F., Oliveira, Vilma B., Mathias, Leda, Vieira, Ivo J. C., Braz-Filho, Raimundo, Crotti, Antonio E. M.

“…The fragmentation of six plumeran indole alkaloids (PIAs) previously isolated from Aspidosperma spruceanum has been investigated by electrospray ionization…”
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Electrospray ionization tandem mass spectrometry of deprotonated dihydrobenzofuran neolignans by Dias, Herbert J., Crevelin, Eduardo J., Palaretti, Vinicius, Vessecchi, Ricardo, Crotti, Antônio E.M.

“…Rationale Although dihydrobenzofuran neolignans (DBNs) display a wide diversity of biological activities, the identification of their in vivo metabolites using…”
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Optimization of the Reaction Conditions for the Synthesis of Dihydrobenzofuran Neolignans by Dias, Herbert, Rodrigues, Matheus, Crotti, Antônio

“…We have optimized the experimental conditions for the silver(I)-promoted oxidative coupling of methyl p-coumarate (I) and methyl ferulate (II), which is the…”
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