Listar Artículos Científicos por autor
Mostrando publicaciones 1-7 de 7
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A study of the cis–trans isomerization preference of N-alkylated peptides containing phosphorus in the side chain and backbone
De la Torre, Alexander F.; Ali, Akbar; Concepción, Odette; Montero-Alejo, Ana L.; Muñiz, Francisco M.; Jiménez, Claudio A.; Belmar, Julio; Velázquez-Libera, José Luis; Hernández-Rodríguez, Erix W.; Caballero, Julio (2019)The current work provides a study on the cis–trans isomerization behaviour of N-alkylated peptides decorated with phosphonate ester groups. A Ugi four-component reaction was chosen for the synthesis of N-alkylated peptides, ...
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Development of eco-friendly polyurethane foams based on Lesquerella fendleri (A. Grey) oil-based polyol
Contreras-González, Jorge; Valdés-Lizama, Oscar; Mirabal-Gallardo, Yaneris; De la Torre, Alexander F.; Navarrete, José; Lisperguer, Justo; Durán-Lara, Esteban F.; Santos, Leonardo S.; Nachtigall, Fabiane M.; Cabrera-Barjas, Gustavo; abril, diana (2020)In this study, we investigated the potential of polyurethane foams (LPUF) prepared from Lesquerella fendleri (A. Grey) oil-derived polyol to use as an ecological and cheap substitute for the petroleum-based polyurethane ...
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Preparation of renewable bio-polyols from two species of colliguaja for rigid polyurethane foams
abril, diana ; Mirabal-Gallardo, Yaneris; Bustamante, Carlos; Contreras-González, Jorge; Valdés-Lizama, Oscar; De la Torre, Alexander F. (2018)In this study, we investigated the potential of two non-edible oil extracts from seeds of Colliguaja integerrima (CIO) and Colliguaja salicifolia (CSO) to use as a renewable source for polyols and, eventually, polyurethane ...
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Rationalizing the stability and interactions of 2,4-diamino-5-(4-chlorophenyl)-6-ethylpyrimidin-1-ium 2-hydroxy-3,5-dinitrobenzoate salt
Nawaz Tahir, Muhammad; Ashfaq, Muhammad; Caballero, Julio; Hernández-Rodríguez, Erix W.; Ali, Akbar; De la Torre, Alexander F. (2019)The crystal structure of the salt produced by the reaction of pyrimethamine (an antimalarial drug) with 2-hydroxy-3,5-dinitrobenzoic acid [systematic name: 2,4-diamino-5-(4-chlorophenyl)-6-ethylpyrimidin-1-ium 2-hydroxy- ...
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Ugi reaction-derived prolyl peptide catalysts grafted on the renewable polymer polyfurfuryl alcohol for applications in heterogeneous enamine catalysis
De la Torre, Alexander F.; Scatena, Gabriel S.; Valdés, Oscar; Rivera, Daniel G.; Paixão, Márcio W. (2019)The multicomponent synthesis of prolyl pseudo-peptide catalysts using the Ugi reaction with furfurylamines or isocyanides is described. The incorporation of such a polymerizable furan handle enabled the subsequent ...
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Valorization of food waste to produce intelligent nanofibrous β-chitin films
Cabrera-Barjas, Gustavo; Radovanović, Neda; Bravo, Gaston; De la Torre, Alexander F.; Valdés, Oscar; Nesic, Aleksandra (2021)The efficient use of waste from food processing industry is one of the innovative approaches within sustainable development, because it can be transferred into added value products, which could improve economic, energetic ...
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Value-added long-chain aliphatic compounds obtained through pyrolysis of phosphorylated chitin
Cabrera-Barjas, Gustavo; Jimenez, Romel; Romero, Romina; Valdes, O.; Nesic, Aleksandra; Hernández-García, Ruber; Neira, Andrónico; Alejandro-Martín, Serguei; De la Torre, Alexander F. (2023)In this work, chitin, as a biobased polymer, is used as a precursor to obtain a phosphorylated derivatives. The influence of the different degree of phosphorylation in chitin on pyrolysis pattern was investigated. In order ...