New chiral tetraaza ligands for the efficient enantioselective addition of dialkylzinc to aromatic aldehydes
作者:M. Isabel Burguete、Jorge Escorihuela、Santiago V. Luis、Agustí Lledós、Gregori Ujaque
DOI:10.1016/j.tet.2008.07.099
日期:2008.10
enantioselective addition of dialkylzinc to aldehydes. These bis(amino amide) ligands show high enantioselectivity in the addition of organozincs to aromatic aldehydes. Different structural elements on the ligands seem to play an important role in determining the observed enantioselectivity. Ligand 4b (N,N′-bis(N-l-valinyl)-1,3-diaminopropane, with an aliphatic spacer with 3C atoms) catalyzed the addition of Et2Zn
Minimalist peptidomimetic cyclophanes as strong organogelators
作者:Jorge Becerril、M. Isabel Burguete、Beatriu Escuder、Santiago V. Luis、Juan F. Miravet、Manel Querol
DOI:10.1039/b111229e
日期:2002.3.21
L-Valine containing cyclophanes have been shown to gelate organic solvents leading to soft materials with a clear expression of their chirality at the supramolecular level.
Pseudopeptidic macrocycles as cooperative minimalistic synzyme systems for the remarkable activation and conversion of CO<sub>2</sub> in the presence of the chloride anion
作者:Ferran Esteve、Belén Altava、M. Isabel Burguete、Michael Bolte、Eduardo García-Verdugo、Santiago V. Luis
DOI:10.1039/d0gc01449d
日期:——
A series of pseudopeptidic compounds have been assayed as organocatalyts for the conversion of CO2 into organic carbonates through a cooperative multifunctional mechanism. Conformationally constrained pseudopeptidicmacrocycles 3a and 3b have been revealed to be excellent synzymes for this purpose, being able to provide a suitable preorganization of the different functional elements and reaction components
Stimulus responsive self-assembly of Gemini Amphiphilic Pseudopeptides
作者:Jenifer Rubio、Ignacio Alfonso、M. Isabel Burguete、Santiago V. Luis
DOI:10.1039/c1sm06435e
日期:——
Amphiphilic amino acid derived compounds are very interesting for the design of building blocks able to self-assemble into highly ordered nanostructures, in a hierarchical and controlled fashion. With this aim, the modular synthesis and the full characterization of simple Gemini Amphiphilic Pseudopeptides (GAPs) have been carried out. These compounds were designed to establish intermolecular interactions
Synthesis and Evaluation of Pseudopeptidic Fluorescence pH Probes for Acidic Cellular Organelles: In Vivo Monitoring of Bacterial Phagocytosis by Multiparametric Flow Cytometry
作者:M. Isabel Burguete、Francisco Galindo、M. Angeles Izquierdo、José-Enrique O'Connor、Guadalupe Herrera、Santiago V. Luis、Laura Vigara
DOI:10.1002/ejoc.201000854
日期:2010.11
applications of this family of probes, macrocyclic pseudopeptide 2 was used to monitor the phagocytosis of a culture of GFP-labelled bacteria by human monocytic cells U937 using flowcytometry as the analytical tool. It was found that the occurrence of bacterial killing was concomitant with the production of reactive oxygen species and a drop in pH, the latter monitored indirectly by macrocyclic sensor
合成了一类新的荧光蒽 pH 探针,并对其进行了化学表征,并通过稳态和时间分辨荧光光谱研究了它们的光物理特性。已经在溶液中研究了这些化合物监测 pH 值的能力,并且发现分子 1-12 可以充当 4.6 和 6.5 范围内 pH 值的荧光传感器。该范围对应于描述了有限数量探针的细胞中酸性细胞器的 pH 值(pH 4.5-6.0)。每个传感器的酸碱行为略有不同,具体取决于分子中存在的胺附近的取代基的性质。Thus, the pK a of this family of compounds can be finely tuned by the appropriate selection of the synthetic building blocks at the design stage. 为了测试该探针家族的潜在诊断应用,使用流式细胞术作为分析工具,使用大环假肽 2 来监测人类单核细胞 U937