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Marine Organisms from the Yucatan Peninsula (Mexico) as a Potential Natural Source of Antibacterial Compounds
(MDPI, 2020-07-18)
[Abstract] A total of 51 sponges (Porifera) and 13 ascidians (Chordata) were collected on the coast of the Yucatan Peninsula (Mexico) and extracted with organic solvents. The resulting extracts were screened for antibacterial ...
In Vitro and In Vivo Assessment of the Efficacy of Bromoageliferin, an Alkaloid Isolated from the Sponge Agelas dilatata, against Pseudomonas aeruginosa
(MDPI, 2020-06-23)
[Abstract] The pyrrole-imidazoles, a group of alkaloids commonly found in marine sponges belonging to the genus Agelas, display a wide range of biological activities. Herein, we report the first chemical study of the ...
Relative Configuration of Micrograms of Natural Compounds Using Proton Residual Chemical Shift Anisotropy
(Nature, 2020-09-01)
[Abstract] 3D molecular structure determination is a challenge for organic compounds or natural products available in minute amounts. Proton/proton and proton/carbon correlations yield the constitution. J couplings and ...
The Red Cage: Implementation of pH-Responsiveness Within a Macrobicyclic Pyridinium-Based Molecular Host
(Royal Society of Chemistry, 2021-11-09)
[Abstract] We present herein the implementation of pH-responsiveness into a new polycationic macrobicyclic structure, namely what we have termed the “red cage”. The hydrolytically-stable cryptand-like compound has been ...
Controlled Binding of Organic Guests by Stimuli-Responsive Macrocycles
(Royal Society of Chemistry, 2020-05-12)
[Abstract] Synthetic supramolecular chemistry pursues not only the construction of new matter, but also control over its inherently dynamic behaviour. In this context, classic host–guest chemistry, based on the development ...
Antimicrobial Diterpene Alkaloids from an Agelas citrina Sponge Collected in the Yucatán Peninsula
(MDPI, 2022-04-28)
[Abstract] Three new diterpene alkaloids, (+)-8-epiagelasine T (1), (+)-10-epiagelasine B (2), and (+)-12-hydroxyagelasidine C (3), along with three known compounds, (+)-ent-agelasine F (4), (+)-agelasine B (5), and ...
Selective Detection of Aeromonas Spp. By a Fluorescent Probe Based on the Siderophore Amonabactin
(Elsevier, 2022-02-03)
[Abstract] Amonabactins, the siderophores produced by some pathogenic bacteria belonging to Aeromonas genus, can be used for the preparation of conjugates to be imported into the cell using their specific transport machinery. ...
Vermellogens and the Development of CB[8]-Based Supramolecular Switches Using pH-Responsive and Non-Toxic Viologen Analogues
(ACS, 2022-10-07)
[Abstract] We present herein the “vermellogens”, a new class of pH-responsive viologen analogues, which replace the direct linking between para-substituted pyridinium moieties within those by a hydrazone functional group. ...
Narrowing the Tolerance Factor Limits for Hybrid Organic-Inorganic Dicyanamide-Perovskites
(Elsevier, 2022-10-11)
[Abstract] In this work we focus in setting the limits of the tolerance factor and the size of the A-cations that stabilize the perovskite structure in hybrid dicyanamide compounds [A][Mn(dca)3]. For this purpose, we propose ...
Simple and Low-Cost Footstep Energy-Recover Barocaloric Heating and Cooling Device
(MDPI, 2021-10-10)
[Abstract] In this work, we design, build, and test one of the very first barocaloric devices. The here presented device can recover the energy generated by an individual’s footstep and transform it into barocaloric heating ...