Zobrazeno 1 - 10
of 341
pro vyhledávání: '"EDILBERTO R. SILVEIRA"'
Autor:
PAULO IURY G. NUNES, ANA FLÁVIA S.C. VIANA, GREYCE L. SASAHARA, SABRINA M. DOS SANTOS, ANA PAULA N.N. ALVES, EDILBERTO R. SILVEIRA, FLÁVIA A. SANTOS
Publikováno v:
Anais da Academia Brasileira de Ciências, Vol 95, Iss 3 (2023)
Abstract Dermatitis is defined as a set of inflammatory diseases that affect the skin, with varied causes. Among the different types of dermatitis, contact dermatitis is the most prevalent. Although the current therapy is often effective, it is assoc
Externí odkaz:
https://doaj.org/article/e283189e0af544f9b8c5d5aa21409a56
Autor:
Tiago Henrique, Caroline de F. Zanon, Ana P. Girol, Ana Carolina Buzzo Stefanini, Nayara S. de A. Contessoto, Nelson J. F. da Silveira, Daniel P. Bezerra, Edilberto R. Silveira, José M. Barbosa-Filho, Marinonio L. Cornélio, Sonia M. Oliani, Eloiza H. Tajara
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-14 (2020)
Abstract Chronic inflammation provides a favorable microenvironment for tumorigenesis, which opens opportunities for targeting cancer development and progression. Piplartine (PL) is a biologically active alkaloid from long peppers that exhibits anti-
Externí odkaz:
https://doaj.org/article/e95b2021fb1e40a0a8564a1695d8be4f
Autor:
Geissy I.M.C. Feitosa, Isabella F. Carvalho, Edivaldo B.S. Coelho, Marla R.B. Monteiro, Rafael L. Medeiros, Ellaine D.F. Carvalho, Paulo T. A. Silva, Dóris M.F. Carvalho, Daniel E.A. Uchoa, Edilberto R. Silveira, Cláudia F. Santos, Nilberto R. Nascimento, Maria-Denise F. Carvalho, Bruno A. Cardi, Krishnamurti M. Carvalho
Publikováno v:
PAIN Reports, Vol 4, Iss 6, p e791 (2019)
Abstract. Introduction:. In recent decades, several researches have been conducted in search of new analgesics that do not present the side effects of opioids. In this context, animal venoms contain natural painkillers that have been used for the dev
Externí odkaz:
https://doaj.org/article/b82e704cf4b143b7af44d5e6b4ae8efd
Autor:
Raimundo Regivaldo G. Nascimento, Jackelyne A. Monteiro, Antônia Torres A. Pimenta, Maria Teresa S. Trevisan, Raimundo Braz-Filho, Elnatan Bezerra de Souza, Edilberto R. Silveira, Mary Anne S. Lima
Publikováno v:
Química Nova, Vol 38, Iss 1, Pp 60-65 (2015)
EtOH extracts of the stems and leaves of Margaritopsis carrascoana were found to contain new flavonoids luteolin 7-O-{β-D-apiofuranosil-(1→6)-[β-Lrhamnopyranosyl-( 1→2)]-β-D-glucopyranosyl} (5) and luteolin 7-O-{α-L-rhamnopyranosyl-(1→6)-[
Externí odkaz:
https://doaj.org/article/daea88b794aa4022ae3783d2a56403fa
Autor:
Francisco das Chagas L. Pinto, Maria da Conceição M. Torres, Edilberto R. Silveira, Otília Deusdênia L. Pessoa, Raimundo Braz-Filho, Maria Lenise da Silva Guedes
Publikováno v:
Química Nova, Vol 36, Iss 8, Pp 1111-1115 (2013)
The chemical investigation of the stem EtOH extract of S. buddleifolium resulted in the isolation of terpenoids, amides, lignans and a steroidal alkaloid. Based on HRMS, IR and ¹H and 13C NMR data analysis, the structures of the isolated compounds w
Externí odkaz:
https://doaj.org/article/3c11fe0d34264650aa4f8c4a08a01146
Autor:
Adalva Lopes Machado, Fabiana Martins Aragão, Paulo N. Bandeira, Hélcio Silva dos Santos, Maria Rose Jane R. Albuquerque, Otília Deusdênia L. Pessoa, Edilberto R. Silveira, Edson Paula Nunes, Raimundo Braz-Filho
Publikováno v:
Química Nova, Vol 36, Iss 4, Pp 540-543 (2013)
The chemical investigation of hexane and ethanol extracts from the aerial parts of Vernonia scorpioides resulted in the isolation and characterization of a new polyacetylene lactone, rel-4-dihydro-4β-hydroxy-5a-octa-2,4,6-triynyl-furan-2-(5H)-one, a
Externí odkaz:
https://doaj.org/article/f5ea38298ce348659f94193518e08bba
Autor:
Milena B. Barreto, Clêrton L. Gomes, João Vito B. de Freitas, Francisco das Chagas L. Pinto, Edilberto R. Silveira, Nilce V. Gramosa, Daniela S. Carneiro Torres
Publikováno v:
Química Nova, Vol 36, Iss 5, Pp 675-679 (2013)
A new sesquiterpene and twelve known compounds comprising eight flavonoids and four terpenoids, were isolated from the leaves, stems, roots and exudate of Croton muscicarpa Müll. Arg.. Their structures were identified as the terpenoids 6α-methoxy-c
Externí odkaz:
https://doaj.org/article/ef470cfec162443dbaf8d3d71d39f100
Autor:
Otília Deusdenia L. Pessoa, Leticia V. Costa-Lotufo, Raimundo Braz-Filho, James J. La Clair, Diego V. Wilke, Edilberto R. Silveira, Ana Isabel V. Maia, Jose Gustavo L. Almeida
Publikováno v:
Marine Drugs, Vol 10, Iss 12, Pp 2846-2860 (2012)
The zoanthids Palythoa caribaeorum and Protopalythoa variabilis are among the most abundant marine species along the Brazilian coast. We now report the isolation and structure elucidation of two unprecedented sulfonylated ceramides, palyosulfonoceram
Externí odkaz:
https://doaj.org/article/4c2eb76096d64b83b6fb61b411d3ffe8
Autor:
Daniel P. Bezerra, Cláudia Pessoa, Manoel O. Moraes, Letícia V. Costa-Lotufo, Dayana Rubio Gouvea, Valquíria A. Polisel Jabor, Norberto Peporine Lopes, Keyller Bastos Borges, Mary Anne S. Lima, Edilberto R. Silveira
Publikováno v:
Química Nova, Vol 35, Iss 3, Pp 460-465 (2012)
Piplartine (PPTN) is an alkaloid amide found in Piper species that presents different activities. PPTN determination in rat plasma is necessary to better understand its biological effects. The aim of this study was to develop a sensitive LC-MS/MS met
Externí odkaz:
https://doaj.org/article/9f0da1c7b2474982a6f2e7a34da518c9
Publikováno v:
Química Nova, Vol 34, Iss 2, Pp 268-271 (2011)
A new flavone named 3,4',5,6-tetramethoxy-[2'',3'':7,8]furanoflavone besides the known flavonoids (2S,3R,4S)-3,4,5,8-tetramethoxy-[2'',3'':6,7]-furanoflavan, 3,6-dimethoxy-2'',2''-dimethylcromene-[2'',3'':7,8] -flavone, 3,5,6-trimethoxy-[2'',3'':7,8]
Externí odkaz:
https://doaj.org/article/6047cfcdb37042b7b19921ef3abc560d