Results 1 to 10 of about 51,192 (201)

Preparation and Characterization of a Molybdenum(VI) Schiff Base Complex as Magnetic Nanocatalyst for Synthesis of 2-Amino-4H-benzo[h]chromenes [PDF]

Journal of Nanostructures, 2016
A new recoverable molybdenum nanocatalyst was prepared by immobilization  of a Schiff base ligand on the surface of silica coated magnetite nanoparticles (Fe3O4@SiO2) through condensation reaction between 3-aminopropyl triethoxysilane and 2-hydroxy1 ...
Naghmeh Divsalar, Niaz Monadi, Mahmood Tajbaksh   +2 more
doaj   +1 more source

Green chemistry preparation of MgO grit like nanostructures: efficient catalyst for the synthesis of 4H-pyrans and α,α′-bis(substituted-benzylidene) cycloalkanone derivatives

Green Processing and Synthesis, 2016
A grit like nanostructure of MgO was prepared in a medium of mulberry leaves extract and characterized on the basis of field emission scanning electronic microscopy (FE-SEM), X-ray diffraction (XRD), and energy dispersive X-ray (EDX) analysis.
Mobinikhaledi Akbar, Yazdanipour Atisa, Ghashang Majid   +2 more
doaj   +1 more source

Magnetic ethyl-based mesoporous organosilica composite supported IL/Mn: A novel and highly recoverable nanocatalyst for preparation of 4H-pyrans

Applied Surface Science Advances, 2020
A novel magnetic bifunctional ethyl-based periodic mesoporous organosilica supported ionic liquid/manganese complex (Mag-BPMO/Mn) with core–shell structure was synthesized and characterized.
Meysam Norouzi, Dawood Elhamifar, Somayeh Abaeezadeh   +2 more
doaj   +1 more source

Multi component one pot synthesis and characterization of derivatives of 2-amino-7,7- dimethyl-5-oxo-4-phenyl-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile and study of anti-microbial activity

Bulletin of the Chemical Society of Ethiopia, 2018
An efficient and convenient procedure has been described for one-pot multi-component synthesis of tetrahydrobenzo[b]pyrans known as 2-amino-7,7-dimethyl-5-oxo-4-phenyl-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile which can be obtained from the reaction ...
N. K. Rao, T. N. Rao, B. Parvatamma, K. P. Devi, S. C. Setty   +4 more
doaj   +1 more source

Mitochondria‐Targeted Multimodal Nanotherapeutics Suppress Oxidized mtDNA‐Driven Inflammation at the Source

Advanced Science, EarlyView.
Ox‐mtDNA fragments escaping from mitochondria drive robust inflammatory responses. A targeted nanoplatform simultaneously inhibits mitochondrial FEN1‐mediated mtDNA cleavage and scavenges ROS, preventing the generation of immunogenic Ox‐mtDNA fragments. The released SeNPs further promote autophagic clearance of cytosolic mtDNA. Consequently, cGAS‐STING,
Wen‐Ling Li, Juan Cao, Yu‐Lin Wang, Yu‐Han Fan, Jia‐Qi Xu, Xian Wu Cheng, Lei Xing, Hu‐Lin Jiang   +7 more
wiley   +1 more source

Relaxant Activity of 4H-Pyran and 1,6-Dihydropyridine Derivatives on Isolated Rat Trachea

Drugs and Drug Candidates
Derivatives of 4H-pyrans and 1,6-dihydropyridines have generated considerable attention due to their interesting biological and therapeutic values. Their pharmacological activities include vasorelaxant, anticarcinogenic, antimicrobial, and antioxidant ...
Samuel Estrada-Soto, Soledad Alemán-Pantitlán, Emmanuel Gaona-Tovar, Fernando Hernández-Borja, Yolanda Alcaraz, Rafael Villalobos-Molina, Miguel A. Vázquez   +6 more
doaj   +1 more source

Magnetic Zinc hydrogen salt of phosphotungstic acid: an efficient catalyst for the one-pot synthesis of 4-H pyrans derivatives [PDF]

شیمی کاربردی روز
In this study, a magnetic catalyst of phosphutangetic acid salt (ZnHPMo12O40) was prepared by substitution of protons in H3PW12O40 with zinc metal cations as a recyclable catalyst.
Mahdieh Sajadi, Ahmad Reza Momeni, Heshmatallah Samimi   +2 more
doaj   +1 more source

Organic photonic synaptic transistors for bionic vision: From spectral engineering to flexible intelligent perception

FlexMat, EarlyView.
Different wavelength photonic synapses are used for biomimetic visual applications. Abstract Bionic intelligent visual perception systems have significant application prospects in fields such as autonomous driving and robotics, medical imaging and auxiliary diagnosis, security and monitoring.
Longlong Jiang, Shan Wu, Silu Feng, Heyi Huang, Wangyu Wu, Hong Han, Yao Ni   +6 more
wiley   +1 more source

Synthesis of Microbial‐Derived Octadecanoids

Lipids, EarlyView.
C18‐carbon containing dietary polyunsaturated fatty acids (e.g., linoleic acid, α‐linolenic acid, and γ‐linolenic acid) are metabolized by bacteria in the gut into oxygenated lipid mediators termed octadecanoids. To study the biological function of these compounds, we report here the chemical synthesis of multiple octadecanoids.
Johanna Revol‐Cavalier, Katarína Bankóová, Olivier Salamin, Alessandro Quaranta, Juan Du, Mats Hamberg, Craig E. Wheelock   +6 more
wiley   +1 more source

Gradient‐Structured Polymer Fiber Mats for Broadly Tunable Multicolor and White Lasing

Laser &Photonics Reviews, EarlyView.
Hierarchically engineered electrospun fiber mats containing separated red, green, and blue dyes enable highly tunable multicolor and white random lasing. Spatially controlled dye distribution suppresses energy transfer, allowing precise color adjustment across wide color gamuts and accurate reproduction of daylight white standards.
Alina Szukalska, Kinga Halicka‐Stępień, Jastin Popławski, Katarzyna Kołodzińska, Michal Majkowski, Joanna Cabaj, Lech Sznitko   +6 more
wiley   +1 more source