Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Ivo Jose Curcino Vieira"'
Publikováno v:
Química Nova, Vol 39, Iss 2, Pp 156-159 (2016)
A new sarpagine-type alkaloid, Na-methylrauflorine (1), was isolated from Rauvolfia capixabaetogether with isoreserpiline (2),Nb-oxide-isoreserpiline (3), ajmalicine (4), perakine (5) and vinorine (6) alkaloids. These compounds were characterized bas
Externí odkaz:
https://doaj.org/article/8f1e66cf16594321b927d37859b590bf
Autor:
Jener David Gonçalves Santos, Ivo Jose Curcino Vieira, Raimundo Braz-Filho, Alexsandro Branco
Publikováno v:
International Journal of Molecular Sciences, Vol 16, Iss 4, Pp 8761-8771 (2015)
Agave sisalana (sisal) is known worldwide as a source of hard fibers, and Brazil is the largest producer of sisal. Nonetheless, the process of removing the fibers of the sisal leaf generates 95% waste. In this study, we applied chemical sequential st
Externí odkaz:
https://doaj.org/article/547de95a65924b0f8a2e1fba39cedc5f
Autor:
Almir Ribeiro de Carvalho Junior, Rafaela Oliveira Ferreira, Michel de Souza Passos, Samyra Imad da Silva Boeno, Lorena de Lima Glória das Virgens, Thatiana Lopes Biá Ventura, Sanderson Dias Calixto, Elena Lassounskaia, Mario Geraldo de Carvalho, Raimundo Braz-Filho, Ivo Jose Curcino Vieira
Publikováno v:
Molecules, Vol 24, Iss 6, p 1026 (2019)
A phytochemical study of leaves and twigs of Psychotria nuda resulted in 19 compounds, including five indole alkaloids, N,N,N-trimethyltryptamine, lyaloside, strictosamide, strictosidine, and 5α-carboxystrictosidine; two flavonolignans, cinchonain I
Externí odkaz:
https://doaj.org/article/0341dfb975a547cdb6715f5b3e6edf13
Autor:
Ivo Jose Curcino Vieira, Elaine Rodrigues Figueiredo, Milena Gonçalves Curcino Vieira, Almir Ribeiro de Carvalho Junior, Michel de Souza Passos, Samyra Imad da Silva Boeno, Otoniel Aquino Azevedo, Raimundo Braz-Filho
Publikováno v:
Molecules, Vol 23, Iss 4, p 949 (2018)
Two new triterpenes cycloartane-type, named 24-methylencycloartan-12-oxo-3β,22α-diol and trichiliol, were isolated from the leaves of Trichilia casaretti C. DC. together with three known triterpenes—24-methylencycloart-3β,22-diol, 22,25-dihydroc
Externí odkaz:
https://doaj.org/article/507a6d5e65f8438299f3c0a02bab2be7
Autor:
Almir Ribeiro de Carvalho Junior, Ivo Jose Curcino Vieira, Mario Geraldo de Carvalho, Raimundo Braz-Filho, Mary Anne S. Lima, Rafaela Oliveira Ferreira, Edmilson José Maria, Daniela Barros de Oliveira
Publikováno v:
Molecules, Vol 22, Iss 1, p 103 (2017)
The genus Psychotria (Rubiaceae) comprises more than 2000 species, mainly found in tropical and subtropical forests. Several studies have been conducted concerning their chemical compositions, showing that this genus is a potential source of alkaloid
Externí odkaz:
https://doaj.org/article/a5132afba8a841858bd1bdaf4fc92467
Autor:
Alex Paulo Martins do Carmo, Marta Simone Mendonça Freitas, Liliane Corrêa Machado, Luan dos Santos Silva, Detony José Calenzani Petri, Júlia Caetano Vimercati, Carlos Roberto Ribeiro Matos, Leda Mathias, Ivo José Curcino Vieira, Almy Junior Cordeiro de Carvalho
Publikováno v:
Journal of Agriculture and Food Research, Vol 15, Iss , Pp 100968- (2024)
Jambu, a plant native to the Amazon, is rich in essential oils, particularly spilanthols and phytols. Although hydroponic cultivation of this vegetable is practiced, the process remains relatively understudied. In this context, this study aimed to as
Externí odkaz:
https://doaj.org/article/d477c084139b4907821bbebbf4f18002
Autor:
Sarah E. O'Connor, Ivo Jose Curcino Vieira, Clare E. M. Stevenson, Kate Bussey, Lorenzo Caputi, Jakob Franke, David M. Lawson, Scott C. Farrow
Publikováno v:
Nature chemical biology
Nature Chemical Biology
Nature Chemical Biology
Cycloaddition reactions generate chemical complexity in a single step. Here we report the crystal structures of three homologous plant-derived cyclases involved in the biosynthesis of iboga and aspidosperma alkaloids. These enzymes act on the same su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5847f1e83389c7adbd2dbee156c68a5
https://pubmed.ncbi.nlm.nih.gov/32066966
https://pubmed.ncbi.nlm.nih.gov/32066966
Autor:
Gabriel do Amaral Ferreira, Glaziele Campbell, Michel Souza Passos, Gabriel Bonan Taveira, Kathlyn Vasconcelos Gevú, Ivo José Curcino Vieira, Valdirene Moreira Gomes, Maura Da Cunha
Publikováno v:
Floresta e Ambiente, Vol 30, Iss 3 (2023)
Abstract The present work aimed to isolate secondary metabolites from Myrcia insularis Gardner (Myrtaceae) wood and to evaluate the anti-Candida activity and further extracts obtained by partition and the respective main isolated compounds. Wood was
Externí odkaz:
https://doaj.org/article/db0ce3e6661d4572b033cf5e8ff13075
Autor:
Konstantinos Koudounas, Richard M. E. Payne, Ivo Jose Curcino Vieira, Vincent Courdavault, Inês Carqueijeiro, Thu-Thuy T. Dang, Lorenzo Caputi, Belinda Ameyaw, Khoa Chung, Thomas Dugé de Bernonville, Trinh-Don Nguyen, Sarah E. O'Connor, D. Marc Jones, Scott C. Farrow, Jakob Franke
Publikováno v:
Science
Science, American Association for the Advancement of Science, 2018, 360 (6394), pp.1235-1239. ⟨10.1126/science.aat4100⟩
Science, American Association for the Advancement of Science, 2018, 360 (6394), pp.1235-1239. ⟨10.1126/science.aat4100⟩
How to make bioactive alkaloids Vinblastine and vincristine are important, expensive anticancer agents that are produced by dimerization of the plant-derived alkaloids catharanthine and vindoline. The enzymes that transform tabersonine into vindoline
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e4e82747e0360f87dd88b5e3dd7587c
https://hal-univ-tours.archives-ouvertes.fr/hal-02527609
https://hal-univ-tours.archives-ouvertes.fr/hal-02527609
Autor:
Noemi Oliveira Monteiro, Theresa de Moura Monteiro, Thalya Soares R. Nogueira, Jacqueline Rodrigues Cesar, Lara Pessanha S. Nascimento, Karoline Azerêdo Campelo, Graziela Rangel Silveira, Fernanda Antunes, Daniela Barros de Oliveira, Almir Ribeiro de Carvalho Junior, Raimundo Braz-Filho, Ivo José Curcino Vieira
Publikováno v:
Molecules, Vol 27, Iss 20, p 6895 (2022)
The alkaloid Aspidocarpine was isolated from the bark of Aspidosperma desmanthum. Its structure was elucidated by the spectral data of 1H and 13C-NMR (1D and 2D) and high-resolution mass spectrometry (HRESIMS). The antihypertensive activity was inves
Externí odkaz:
https://doaj.org/article/17f82ba9efde419590f8f5346974aef1