Results 91 to 100 of about 132,748 (328)

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

Metal organic frameworks (MOFs) for magnetic solid-phase extraction of pyrazole/pyrrole pesticides in environmental water samples followed by HPLC-DAD determination.

Talanta: The International Journal of Pure and Applied Analytical Chemistry, 2016
Magnetic metal-organic frameworks (MOFs, [MIL-101]) were prepared and used as magnetic solid-phase extraction (MSPE) adsorbents for preconcentration of four kinds of pyrazole/pyrrole pesticides (flusilazole, fipronil, chlorfenapyr, and fenpyroximate) in ...
Jiping Ma, Z. Yao, Liwei Hou, Wenhui Lu, Qipeng Yang, Jinhua Li, Lingxin Chen   +6 more
semanticscholar   +1 more source

Lewis Pair‐Engineered CuMnOx as Cold‐Adapted Multinanozyme for Cooperative Hydrolytic and Oxidative Degradation of Raw Corn Stalk

Advanced Science, EarlyView.
A Lewis pair site design strategy was established to construct Cu‐doped Mn‐based amorphous nanozymes, where Mn and oxygen vacancies generate cooperative acid‐base pairs. The resulting multinanozyme integrates glycosidase‐, oxidase‐, and cold‐adapted enzyme‐mimicking activities, enabling cooperative depolymerization of cellulose and hemicellulose ...
Huile Liu, Ziyi Di, Qing Tian, Yue Zhou, Rong Yang, Zhiyi Bai, Haoyu Wang, Yao Chen, Lianbing Zhang   +8 more
wiley   +1 more source

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

Properties of polypyrrole polyvinilsulfate films for dual actuator sensing systems [PDF]

, 2017
One of the challenges of modern science is the development of actuators able to sense working conditions while actuation, mimicking the way in which biological organs work. Actuation of those organs includes nervous (electric) pulses dense reactive gels,
Fernández Otero, Toribio, Pascual Carrión, Víctor Hugo, Schumacher, Johanna   +2 more
core   +2 more sources

High‐Performance Ambipolar Organic Electrochemical Transistors Based on Diketopyrrolopyrrole‐Dialkoxybithiazole Conjugated Polymers for Single‐component Inverters

Advanced Science, EarlyView.
Two donor‐acceptor conjugated polymers, incorporating diketopyrrolopyrrole (DPP) and dialkoxybithiazole (2Tz) units with ethylene glycol (EG) side chains, exhibit relatively balanced ambipolar organic electrochemical transistor (OECT) performance. This ambipolarity enables the realization of single‐component complementary inverters capable of ternary ...
Jiazheng Li, Zhi Li, Jiayu Huang, Jingjing Su, Peijie Xu, Siwen Wang, Ping Zhang, Yuchuan Tian, Tao Pan, Junyang Liu, Junyu Li, Gang Ye, Ryan C. Chiechi, Yanxi Zhang, Wenjing Hong   +14 more
wiley   +1 more source

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

Pyrrole and Fused Pyrrole Compounds with Bioactivity against Inflammatory Mediators

Molecules, 2017
A new series of pyrrolopyridines and pyrrolopyridopyrimidines have been synthesized from aminocyanopyrroles. The synthesized compounds have been characterized by FTIR, 1H-NMR and mass spectroscopy.
Samar Said Fatahala, S. Hasabelnaby, A. Goudah, G. Mahmoud, Rania Helmy Abd-El Hameed   +4 more
semanticscholar   +1 more source

Pyrrolate-Catalyzed Conjugate Addition of Pyrrole to Electron-Deficient Alkenes

Synlett, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Richardson, Robert D., Hernandez-Juan, Felix A., Dixon, Darren J.   +2 more
openaire   +3 more sources

Tailoring Intermediate Adsorption Through d‐band Mismatch Strategy of Heterojunction to Achieve Industrial Overall Water Splitting

Advanced Science, EarlyView.
This paper demonstrates the fabrication of a Ni3Mo/Ni3N junction to investigate d‐band engineering and elucidate the specific roles of Ni3Mo and Ni3N active sites in improving catalytic activity. Through integrated spectroscopic characterization and first‐principles modeling, for the first time, a d‐band mismatch mechanism has been proposed to ...
Jia Liu, Jiawen Sun, Yi‐Ru Hao, Yaqin Chen, Chunhao Li, Le‐Le Ma, Jing Sun, Zhonglong Zhao, Jiangwei Zhang, Hui Xue, Qin Wang   +10 more
wiley   +1 more source