Results 121 to 130 of about 82,507 (282)

Synthesis of Anthraquinones by Iridium-Catalyzed [2 + 2 + 2] Cycloaddition of a 1,2-Bis(propiolyl)benzene Derivative with Alkynes

open access: yesInorganics, 2019
[2 + 2 + 2] cycloaddition of a 1,2-bis(propiolyl)benzene derivative with terminal and internal alkynes takes place in the presence of [Ir(cod)Cl]2 (cod = 1,5-cyclooctadiene) combined with bis(diphenylphosphino)ethane (DPPE) to give anthraquinones in 42 ...
Takahiro Sawano   +2 more
doaj   +1 more source

A Versatile DNA‐Encoded Library Platform for the Discovery of Highly Cooperative Chemical Inducers of Proximity

open access: yesAdvanced Science, EarlyView.
We present a versatile DNA‐encoded library (DEL) platform designed for rapid library synthesis and subsequent screening for chemical inducers of proximity (CIPs) across various presenter proteins of choice. Applying this approach, we discovered a novel molecular glue‐like compound mediating CRBN‐BRD9 ternary complex formation with remarkable ...
Bingqi Tong   +11 more
wiley   +1 more source

Synthesis of Different Heterocyclic Compounds of Pharmaceutical Relevance [PDF]

open access: yes
This thesis describes the synthesis of different cyclic imines and the exploration of their reactivity with cyclopropenones and 1,3-dipoles,as well as an investigation of the chemistry of the products.
Khan, Musharraf Naveed
core   +2 more sources

Application of chiral 2-isoxazoline for the synthesis of syn-1,3-diol analogs

open access: yesBeilstein Journal of Organic Chemistry, 2019
The asymmetric cycloaddition of TIPS nitronate catalyzed by “Cu(II)-bisoxazoline” gave the 2-isoxazoline product in 95% yield, which was converted into tert-butyl (3S,5R)-6-hydroxy-3,5-O-isopropylidene-3,5-dihydroxyhexanoate in 14 steps through a β ...
Juanjuan Feng   +3 more
doaj   +1 more source

Nascent Extracellular Matrix Converts Biomaterial Cues into Cell Fate Decisions

open access: yesAdvanced Science, EarlyView.
This study uncovers a tri‐directional interplay among cells, hydrogels, and their nascent extracellular matrix. Hydrogel norbornene modification alters CD44‐mediated cell–hydrogel interactions, which shape nascent matrix deposition, composition, and spatial organization.
Joshua Y. Liu   +12 more
wiley   +1 more source

In Situ Bioorthogonal Synthesis of PROTACs via Dual‐Responsive Cleavage for Synergistic Photo‐Immunotherapy

open access: yesAdvanced Science, EarlyView.
A bioactive self‐delivering SNAP‐TAC platform responds to tumor‐associated cathepsin B and glutathione, enabling in situ bioorthogonal synthesis of a BRD4‐degrading proteolysis‐targeting chimera within the tumor microenvironment. The resulting BRD4 degradation and PD‐L1 downregulation synergize with photodynamic therapy‐induced immunogenic cell death ...
Shiqin Jian   +14 more
wiley   +1 more source

Hydrogel Phase Transition‐Driven Soft Gating Circumvents Debye Screening for Advanced Biosensing

open access: yesAdvanced Science, EarlyView.
A 3D soft gate utilizes a macroscopic hydrogel phase transition to effectively circumvent Debye screening in high‐salt environments. The intact matrix maximizes transmembrane ion flux via volumetric Donnan enrichment and superhydrophilicity. Target‐triggered network disassembly abolishes these effects, introducing a synergistic physical barrier.
Liu Shi   +8 more
wiley   +1 more source

Catalytic cycloaddition of acrylates to norbornadiene. Kinetics and mechanism

open access: yesТонкие химические технологии, 2010
Kinetics of [2+2+2]-cycloaddition of acrylates to norbornadiene in the presence of η3-bis(allyl) nickel was studied. The thermodynamic parameters were determined. Kinetics equations for all of the isomer reaction products were found.
I. E. Efros   +3 more
doaj  

H4K12 Lactylation Regulates NDUFS7 to Drive Microglia Reverse Electron Transport in Spinal Cord Injury

open access: yesAdvanced Science, EarlyView.
Lactate accumulation after SCI promotes H4K12la lactylation, which upregulates NDUFS7, triggering mitochondrial RET and ROS, enforcing pro‐inflammatory microglial polarization. MM@mPTC, a biomimetic nanotherapeutic, degrades LDHA in activated microglia, reducing H4K12la lactylation and blocking RET, thus curbing ROS, fostering a reparative phenotype ...
Chenglong Hong   +13 more
wiley   +1 more source

Cycloaddition of oxidopyrylium species in organic synthesis

open access: yes, 2008
In the current survey, to highlight the cycloaddition of oxidopyrylium ylides and their application in organic synthesis. Cycloaddition of the related carbonyl ylides, generated by rhodium-catalyzed addition of diazo ketones, has recently been reviewed ...
SINGH, VISHWAKARMA   +3 more
core   +1 more source

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