Results 41 to 50 of about 1,621,772 (233)

Synthese von 4,6-Diaminozuckern

open access: yesCHIMIA, 1981
4,6-Diaminosugars are prepared from glycals via 2-enopyranosides followed by an allyl-activated SN-exchange to the corresponding azide which upon reduction yield the desired compounds.
Wolfram Fuchs, Wolfgang Voelter
doaj   +1 more source

Modular and Stereoselective Synthesis of Cyclobutane β‐Amino Alcohols

open access: yesAngewandte Chemie, EarlyView.
Late‐stage functionalization and photoisomerization of 1,2‐azaborine leads to a general strategy for the synthesis of diversely substituted cyclobutane β‐amino alcohols. The relative stereochemistry of the resulting products is unambiguously defined by the stereospecific and stereoselective nature of the photoisomerization‐hydrogenation‐oxidation ...
Xinyu Yang   +3 more
wiley   +2 more sources

Structure of Eugenol (4-Allyl-2-methoxyphenol)

open access: yes, 2016
Structure of Eugenol (4-Allyl-2-methoxyphenol)
Garima Chouhan (682422)   +5 more
core   +1 more source

Chiral Nanoparticles Suppress Inflammatory Infiltration to Promote Extracellular Matrix Remodeling for Ectopia Lentis Therapy

open access: yesAdvanced Science, EarlyView.
L‐cysteine‐configured chiral polyurethane nanoparticles suppress ocular inflammation and reduce extracellular matrix (ECM) degradation in ectopia lentis by regulating macrophages polarization and inhibiting nuclear factor kappa B signaling pathway. By promoting zonular fiber‐associated protein restoration and tissue repair, this minimally invasive ...
Yinuo Wen   +17 more
wiley   +1 more source

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

open access: yesAngewandte 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   +1 more
wiley   +2 more sources

Charting the Future of Stereoselective Carbohydrate Synthesis: The Essential Role of Cross‐Disciplinary Innovation

open access: yesAdvanced Science, EarlyView.
Cross‐disciplinary endeavors are blossoming across the broad chemical sciences. This perspective provides a glimpse into the rewarding interdisciplinary journey taken by the Charles Loh research group in pioneering the σ‐hole based catalytic glycosylation strategy.
Charles C. J. Loh
wiley   +1 more source

De Novo Discovery of Nonstandard Thioisoindole‐Bridged Bicyclic Peptides Targeting Traf2‐ and NCK‐Interacting Kinase

open access: yesAngewandte Chemie, EarlyView.
An optimized strategy for the ribosomal synthesis of thioisoindole‐bridged bicyclic (TiB) peptides is incorporated into the RaPID platform, enabling high‐throughput discovery from topologically defined TiB libraries. Proof‐of‐concept selection against TNIK identifies nanomolar‐affinity ligands with inhibitory activity, while x‐ray crystallography ...
Yue Zhang   +5 more
wiley   +2 more sources

Estudo da influência das ligações de hidrogênio intramoleculares no rearranjo de claisen [PDF]

open access: yes, 2008
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Química.O uso de pesticidas na agricultura aumenta o rendimento e a qualidade dos produtos, reduzindo o trabalho e os gastos
Ferreira, Valquíria Barbosa Nantes
core  

A trimetallic bismuth-based allyl cation [PDF]

open access: yes
The chemistry of low-valent bismuth compounds has recently unlocked new concepts in catalysis as well as unique electronic structure fundamentals. In this work, we describe the synthesis and characterization of a highly-reduced bismuth salt featuring a ...
Markus, Leutzsch   +6 more
core   +2 more sources

Electrochemically Driven Regioselective Radical Functionalization of Allenes: Scope and Mechanistic Insights

open access: yesAdvanced Science, EarlyView.
Allenes emerge as powerful platforms for electrochemical functionalization through radical pathways. Selective radical addition at the central carbon triggers anodic oxidation and intramolecular cyclization, enabling efficient synthesis of oxazolines and oxazolidine‐2‐imines without external oxidants.
Pranjal Pyne   +5 more
wiley   +1 more source

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