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Reversible Control of DNA Binding with Cucurbit[8]uril-Induced Supramolecular 4,4′-Bipyridinium–Peptide Dimers
(American Chemical Society, 2021-03-08)
[Abstract] Many cellular processes in living organisms are regulated by complex regulatory networks, built from noncovalent interactions between relatively few proteins that perform their functions by switching between ...
Dermacozine N, the First Natural Linear Pentacyclic Oxazinophenazine with UV–Vis Absorption Maxima in the Near Infrared Region, along with Dermacozines O and P Isolated from the Mariana Trench Sediment Strain Dermacoccus abyssi MT 1.1ᵀ
(MDPI, 2021-06-03)
[Abstract] Three dermacozines, dermacozines N–P (1–3), were isolated from the piezotolerant Actinomycete strain Dermacoccus abyssi MT 1.1ᵀ, which was isolated from a Mariana Trench sediment in 2006. Herein, we report the ...
Hierarchical self-assembly of aromatic peptide conjugates into supramolecular polymers: it takes two to tango
(Royal Society of Chemistry, 2021-12-10)
[Abstract] Supramolecular polymers are self-assembled materials displaying adaptive and responsive “life-like” behaviour which are often made of aromatic compounds capable of engaging in π–π interactions to form larger ...
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 ...
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 ...
Amino Acid–Viologen Hybrids: Synthesis, Cucurbituril Host–Guest Chemistry, and Implementation on the Production of Peptides
(American Chemical Society, 2021-12-10)
[Abstract] We present herein the development of a series of viologen–amino acid hybrids, obtained in good yields either by successive alkylations of 4,4′-bipyridine, or by Zincke reactions followed by a second alkylation ...