Search Results - "Rocha Machado, Vanessa"

Chemical Modification Produces Species-Specific Changes in Cucurbitacin Antifeedant Effect by Lang, Karen Luise, Deagosto, Emilio, Zimmermann, Lara Almida, Machado, Vanessa Rocha, Campos Bernardes, Lílian Sibelle, Schenkel, Eloir Paulo, Duran, Fernando Javier, Palermo, Jorge, Rossini, Carmen

“…Cucurbitacins are secondary metabolites that mediate insect plant interactions not only as allomones against generalists but also as kairomones for specialist…”
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New cytotoxic cucurbitacins from Wilbrandia ebracteata Cogn by Lang, Karen L, da Rosa Guimarães, Tatiana, Rocha Machado, Vanessa, Zimmermann, Lara A, Silva, Izabella T, Teixeira, Marina R, Durán, Fernando J, Palermo, Jorge A, Simões, Cláudia M O, Caro, Miguel S B, Schenkel, Eloir P

“…Chemical investigation of the roots of Wilbrandia ebracteata Cogn. (Cucurbitaceae) led to the isolation of two new (1- 2) and four known (3- 6) cucurbitacins…”
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A short and efficient synthesis of the polyacetylene natural product deca-4,6,8-triyn-1-ol by Machado, Vanessa Rocha, Biavatti, Maique Weber, Danheiser, Rick L.

“…[Display omitted] •Deca-4,6,8-triyn-1-ol is most efficiently prepared by coupling iodopropyne with a heptadiynol.•Iodopropyne can be synthesized in one step…”
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Anti-leukemic activity of semisynthetic derivatives of lupeol by Machado, Vanessa Rocha, Jacques, Amanda Virtuoso, Marceli, Natália Stefanes, Biavatti, Maique Weber, Santos-Silva, Maria Cláudia

“…In our previous work, lupeol was isolated from aerial parts of V. scorpioides and modified by semisynthetic approach. The purpose of this study was to…”
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Synthesis and cytotoxic activity evaluation of dihydrocucurbitacin B and cucurbitacin B derivatives by Lang, Karen Luise, Silva, Izabella Thaís, Zimmermann, Lara Almida, Machado, Vanessa Rocha, Teixeira, Marina Rodrigues, Lapuh, María Ivana, Galetti, Mariana Alejandra, Palermo, Jorge Alejandro, Cabrera, Gabriela Myriam, Bernardes, Lílian Sibelle Campos, Simões, Cláudia Maria Oliveira, Schenkel, Eloir Paulo, Caro, Miguel Soriano Balparda, Durán, Fernando Javier

“…Semi-synthetic transformations were performed at positions 2, 3, 7, 16, 20, 22, and 25 on dihydrocucurbitacin B (1) and cucurbitacin B (2). Novel twenty-nine…”
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