Results 171 to 180 of about 58,537 (265)

Turn‐Induction in Peptides Incorporating Novel Cyrene‐Derived α,α‐Disubstituted Amino Acid

Journal of Peptide Science, Volume 32, Issue 3, March 2026.
Novel chiral cyrene‐derived Cyr residues were incorporated into peptides. The α,α‐disubstituted amino acid residue was introduced using the Ugi reaction. X‐ray crystallographic analysis of R‐ and S‐Cyr residues indicated preference to adopt left‐ and right‐handed α‐helical conformations, respectively.
Kajumee Bora Bhowal, Raphael Hitti, William D. Lubell   +2 more
wiley   +1 more source

A Radical Cascade with Double Intramolecular Hydrogen Atom Transfer for the Generation of Bisfunctionalized Cyclopentanes from Linear Alkynes

Angewandte Chemie, Volume 138, Issue 5, 28 January 2026.
A radical cascade process involving the activation of two aliphatic C–H bonds in a series of five elementary steps converts readily available terminal alkynes into functionalized cyclopentylmethyl arylsulfones. The methodology delivers flexible synthetic intermediates and was applied to the preparation of diquinanes and triquinanes possessing a rare ...
Lise Benoist, Éléonore Barbier, Mariam Sangare, Philippe Renaud, Fabrice Dénès   +4 more
wiley   +2 more sources

Biosynthesis of the 5-Isoxazolidinone-Containing Hexacyclic Structure of Parnafungin. [PDF]

J Am Chem Soc
Sun Z, Yost KM, Bills GF, Tang Y.
europepmc   +1 more source

Direct Identification and Quantification of Flavonoids and Their Structural Isomers Using Ambient Ionization Tandem Mass Spectrometry

Rapid Communications in Mass Spectrometry, Volume 40, Issue 3, 15 February 2026.
ABSTRACT Rationale Flavonoids are phenolic compounds with many health‐benefiting properties. However, differentiating different types of flavonoids and their isomers is challenging due to their highly similar structures of various subtypes and different numbers and sites of substituents.
Yanqiu Wang, Liping Xu, Tiange Gu, Hongli Li, David Da Yong Chen   +4 more
wiley   +1 more source

Development of a Stereoselective Synthesis of Isomers of (+)-Disorazole Z1's Lateral Chain. [PDF]

J Org Chem
Bauer TJ, Köhler P, Spieß O, Schinzer D.   +3 more
europepmc   +1 more source

Stereochemistry [PDF]

Annual Reports on the Progress of Chemistry, 1904
openaire   +3 more sources

Stereochemistry of the hydrolysis of glycosidic linkage by endo‐β‐1,4‐xylanases ofTrichoderma reesei [PDF]

, 1994
Peter Biely, Lubomı́r Kremnický, Juraj Alföldi, Maija Tenkanen   +3 more
openalex   +1 more source

Elements and roadmap for interactive molecular graphics and modeling “in the Holodeck”

Protein Science, Volume 35, Issue 2, February 2026.
Abstract Molecular graphics have been instrumental in advancing chemistry, drug discovery, materials science and structural biology, enabling visualization of molecular systems from static images to dynamic web displays and immersive platforms. While effective visualization is largely a solved problem, in this perspective we argue that the next ...
Adrian J. Mulholland, Luciano A. Abriata
wiley   +1 more source

Epoxide Stereochemistry Controls Regioselective Ketoreduction in Epoxyquinoid Biosynthesis. [PDF]

J Am Chem Soc
Wang SY, Chiu KW, Lin KL, Wei HY, Chen YR, Tu Z, Lin YT, Lin CH, Chein RJ, Lin HC.   +9 more
europepmc   +1 more source

A theoretical study on the stereochemistry and protonation of ⁻:CH₂—NO₂ [PDF]

, 1976
Paul G. Mezey, A. J. Kresge, I. G. Csizmadia   +2 more
openalex   +1 more source