Results 91 to 100 of about 105,049 (336)

Marine Streptomyces-Derived Novel Alkaloids Discovered in the Past Decade

Marine Drugs
Natural alkaloids originating from actinomycetes and synthetic derivatives have always been among the important suppliers of small-molecule drugs. Among their biological sources, Streptomyces is the highest and most extensively researched genus.
Zijun Liu, Wenyan Sun, Zhe Hu, Wei Wang, Huawei Zhang   +4 more
doaj   +1 more source

Brominated Pyrrole‐Hemithioindigos and Pyrrole‐Hemioxyindigos

ChemPhotoChem
Hemithioindigos (HTIs) have become a well‐established representative in the toolbox of photoswitches; their pyrrole variants exhibit particularly beneficial properties. The oxy‐analogues of HTIs, namely hemioxyindigos (HOIs) or aurones, have so far been underrepresented as photoswitches; up until now, only a single pyrrole‐HOI had been described in the
Robin Risken, Merlin Müller, Paul Erik Schneider, Elisabeth Kreidt   +3 more
openaire   +1 more source

Porphyrin‐Based Porous Materials for Antibacterial Applications

Advanced Science, EarlyView.
Porphyrin‐based porous materials have excellent photophysical properties and tunable structures for high‐efficiency antibacterial therapy. This review comprehensively discusses the structural design strategies and synthetic pathways of the four main types of porphyrin‐based porous materials, summarizes their cross‐domain antimicrobial applications, and
Xiao‐Xue Liang, Xin Li, Ying Xiong, Xin Wang, Ying‐Wei Yang   +4 more
wiley   +1 more source

1‐Azabicyclo[1.1.0]butanes (ABBs) on the Map: Mechanistic Pathways for Catalytic Ring Opening and Functionalizations

Angewandte Chemie, EarlyView.
Catalytic strain‐release ring opening and functionalizations of 1‐azabicyclo[1.1.0]butanes (ABBs) represent a promising strategy for accessing diverse azetidine products. These transformations proceed via polar pathways, radical pathways, and hybrid mechanisms that combine both.
James Shao‐Jiun Yang, Hsuan‐Hung Liao   +1 more
wiley   +2 more sources

Synthesis, Cytotoxicity and Antiproliferative Effect of New Pyrrole Hydrazones

Molecules
Novel pyrrole-based carbohydrazide (1) and hydrazones (1A–D) were synthesized, characterized, and subjected to spectroscopic studies. The hydrazones were obtained by reacting a pyrrole hydrazide with substituted pyrrole aldehydes.
Stanislava Vladimirova, Rossitsa Hristova, Ivan Iliev   +2 more
doaj   +1 more source

Pyrrole N–H Anion Complexes

Coordination chemistry reviews, 2017
Synthetic pyrrole-based anion receptors date back to the 1990s. They have been extensively developed in the context of macrocyclic systems as expanded porphyrins and calixpyrroles, and related systems.
Gabriela I. Vargas-Zúñiga, J. Sessler
semanticscholar   +1 more source

Interfacial Salt Redistribution Enables Rapid Atmospheric Water Harvesting in a Biomimetic Multi‐Layer Hygroscopic Membrane

Advanced Science, EarlyView.
A biomimetic multi‐layer hygroscopic membrane redistributes salt toward an air‐accessible nanofiber interface, enabling rapid interfacial deliquescence while a brush‐like hydrogel promotes efficient liquid transport and storage. By decoupling vapor capture from bulk water storage, the membrane achieves fast sorption kinetics and enables rapid‐cycling ...
Fu‐Yao Zhong, Chao‐Yang Guo, Zai‐Dong Shao, Lu‐Bing Zhong, George Zheng Chen, Yaoyao Zheng, John L. Zhou, Yu‐Ming Zheng, Jun He   +8 more
wiley   +1 more source

Catalyst‐Controlled Divergent Strain‐Release Amination and Skeletal Remodeling of Bicyclo[1.1.0]Butanes

Angewandte Chemie, EarlyView.
Catalyst‐controlled nitrene transfer unlocks divergent reactivity of bicyclo[1.1.0]butanes. Rhodium catalysis promotes selective strain‐release amination to access cyclobutene and cyclobutane amino‐acid scaffolds, whereas visible‐light photocatalysis redirects nitrene reactivity toward double amination and skeletal remodeling, providing a complementary
Aksar Ali, Lennard Kloene, Justus Koedel, Yifan Guo, Minakshi Altia, Rene M. Koenigs   +5 more
wiley   +2 more sources

Microwave-Assisted Synthesis of 1-(5-Substituted-4-hydroxy-2-methyl-1H-pyrrol-3-yl)ethan-1-ones from 2-Amino Acid-Derived Enamine-Type Schiff Bases

Molbank
Pyrrole-type compounds are widely known for their potential biological activity. However, methods for synthesizing 2,3,4,5-tetrasubstituted pyrroles remain limited.
Diego Quiroga, Sergio Torres-Cortés, Ericsson Coy-Barrera   +2 more
doaj   +1 more source

The nuclear magnetic resonance spectra of pyrrole and [N-D]pyrrole

, 1969
The proton magnetic resonance spectrum at 60 MHz of pyrrole, spin- decoupled from 14N, has been studied under high resolution. Similar studies have been made on [N-D]pyrrole in which the proton spectrum was obtained simultaneously spin-decoupled from ...
GF Katekar, AG Moritz
core   +1 more source