Results 91 to 100 of about 12,256 (221)

Carbohydrate‐Based Drug Discovery: Synthetic Strategies and Clinical Applications

open access: yesIsrael Journal of Chemistry, Volume 66, Issue 3, May 2026.
The picture depicts the molecules discussed in the review. On the left side, the general scaffold of sugars is shown. Next to it are four carbohydrate‐based molecules, including remdesivir, islatravir, empagliflozin, and Globo‐H. Remdesivir and islatravir contain a substituted ribose ring attached to a modified nucleobase.
Stephan Scheeff   +2 more
wiley   +1 more source

Poly(ethylene glycol)-supported ααα-trifluoroacetophenone in dioxirane mediated alkene epoxidation reactions [PDF]

open access: yes, 2004
Poly(ethylene glycol) (PEG) was used for the immobilization of ααα-trifluoroacetophenone and the utility of this supported ketone has been examined in dioxirane mediated epoxidation of alkenes.
Kan, JTW, Toy, P
core   +1 more source

Catalytic Strategies for Amide-Based Michael Additions: Advances and Perspectives

open access: yesJournal of Chemistry
The Michael addition is a cornerstone transformation in organic synthesis, enabling efficient C–C and C–heteroatom bond formation. Traditionally, α,β-unsaturated carbonyl compounds such as enones and esters have dominated as Michael acceptors, whereas α ...
Muhammad Naufal   +5 more
doaj   +1 more source

How cinchona alkaloid-derived primary amines control asymmetric electrophilic fluorination of cyclic ketones. [PDF]

open access: yes, 2014
The origin of selectivity in the α-fluorination of cyclic ketones catalyzed by cinchona alkaloid-derived primary amines is determined with density functional calculations.
Houk, KN, Lam, Yu-hong
core   +2 more sources

Mechanical force-switchable aqueous organocatalysis

open access: yesCommunications Materials
Control over the catalytic activity of artificial catalytic systems in aqueous media is of high interest for biomimetic artificial catalysts. The activity of catalytic systems can be controlled via introducing stimuli-responsive feature in the structure ...
Nikita Das, Chandan Maity
doaj   +1 more source

Acid‐Catalyzed Synthesis of Si‐Stereogenic Silanes

open access: yesChinese Journal of Chemistry, Volume 44, Issue 8, Page 1212-1222, 15 April 2026.
Si‐stereogenic silanes are important structural motifs in chemical synthesis, medicinal chemistry, and materials science. However, their catalytic enantioselective synthesis has largely relied on transition‐metal catalysts. Recently, Brønsted acids have been developed as promising alternatives.
Jung Tae Han, Benjamin List
wiley   +1 more source

Ruthenium Olefin Metathesis Catalysts Bearing Carbohydrate-Based N-Heterocyclic Carbenes [PDF]

open access: yes, 2010
Ru-based olefin metathesis catalysts containing carbohydrate-derived NHCs from glucose and galactose were synthesized and characterized by NMR spectroscopy. 2D-NMR spectroscopy revealed the presence of Ru−C (benzylidene) rotamers at room temperature, and
Grubbs, Robert H., Keitz, Benjamin K.
core   +2 more sources

Organocatalysis [PDF]

open access: yesAnnual Reports Section "B" (Organic Chemistry), 2011
Benjamin R. Buckley, Mohamed M. Farah
openaire   +2 more sources

“Dial Up and Lock In”: Asymmetric organo-Brønsted acid catalysis incorporating stable isotopes [PDF]

open access: yes, 2016
An operationally simple organo-Brønsted-acid-catalyzed asymmetric and regioselective “dial up and lock in” of one or more stable isotopes into organic compounds is unknown.
Bachera, Dominika U.   +7 more
core   +1 more source

Palladium and Organocatalysis: An Excellent Recipe for Asymmetric Synthesis

open access: yesMolecules, 2013
The dual activation of simple substrates by the combination of organocatalysis and palladium catalysis has been successfully applied in a variety of different asymmetric transformations.
Isidro M. Pastor   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy