Results 71 to 80 of about 2,440 (209)

Cirkuláris dikroizmus, Fourier transzformációs infravörös és vibrációs cirkuláris dikroizmus spektroszkópia alkalmazása a peptidek, fehérjék és szupramolekuláris komplexek vizsgálatában = Application of circular dichroism, Fourier-transform infrared and vibrational circular dichroism spectroscopy in the investigation of peptides, proteins and supramolecular complexes [PDF]

, 2011
Munkánk során az alábbi ECD és VCD spektroszkópián alapuló vizsgálatokra került sor: 1. Foszforatomot tartalmazó királis koronaéterek és komplexeik vizsgálata 2.
Hollósi, Miklós, Illyés, Eszter Emese, Laczkó, Ilona, Vass, Elemér   +3 more
core  

Helical Photonic Metamaterials for Encrypted Chiral Holograms

Advanced Science, Volume 12, Issue 38, October 13, 2025.
This article explores the untapped potential of 3D‐printed helical structures as chiral metamaterials and metaholograms by uncovering how specific geometric parameters govern their chiroptical behavior. Combining terahertz experiments and simulations, it reveals how tunable, stretchable helices enable broadband ellipticity and encrypted QR codes ...
Wonjin Choi, Widianto P. Moestopo, Songyun Gu, Taeil Lee, Jae‐Hyuck Yoo, Xiaoxing Xia, Michael R. Armstrong   +6 more
wiley   +1 more source

Probing Chiral Nanoparticles and Surfaces by Infrared Spectroscopy

CHIMIA, 2006
Chiral metal surfaces and nanoparticles have the potential to be used for the selective production, the resolution and the detection of enantiomers of a chiral compound, which renders them highly attractive in view of the tremendous consequences
Cyrille Gautier, Marco Bieri, Igor Dolamic, Silvia Angeloni, Julien Boudon, Thomas Bürgi   +5 more
doaj   +1 more source

Robust mode analysis of VCD spectra : how reliable are VCD spectra? [PDF]

, 2010
C
Bultinck, Patrick
core   +1 more source

Asymmetric Epoxidation: A Twinned Laboratory and Molecular Modeling Experiment for Upper-Level Organic Chemistry Students [PDF]

, 2015
The coupling of a student experiment involving the preparation and use of a catalyst for the asymmetric epoxidation of an alkene with computational simulations of various properties of the resulting epoxide is set out in the form of a software toolbox ...
Hii, KKM, Rzepa, HS, Smith, EH
core   +3 more sources

Identification of Pyrrolizilactone Biosynthetic Gene Cluster with Unique Short‐Chain Dehydrogenase Gene for 3‐Methylproline Formation

ChemistryEurope, Volume 3, Issue 5, September 18, 2025.
A standalone enzyme, derived from the reductase domain of a polyketide synthase‐nonribosomal peptide synthetase hybrid enzyme, is identified as a pyrroline carboxylate reductase. This enzyme is involved in the biosynthesis of 3‐methylproline, an amino acid building block of a unique tricyclic pyrrolizidinone structure of a fungal metabolite ...
Naoki Kato, Sayaka Hirosawa, Toshihiko Nogawa, Kiyomi Kinugasa, Tohru Taniguchi, Hiroyuki Osada, Shunji Takahashi   +6 more
wiley   +1 more source

Sesquiterpene Lactones from Calea pinnatifida: Absolute Configuration and Structural Requirements for Antitumor Activity

Molecules, 2020
This work describes the chromatographic fractionation of the aerial parts of Calea pinnatifida and the structural characterization and determination of the absolute configuration of the isolated compounds as well as their antitumor potential.
Lhaís Araújo Caldas, Mariana T. Rodrigues, Andrea N. L. Batista, João M. Batista, João H. G. Lago, Marcelo J. P. Ferreira, Ileana G. S. Rubio, Patricia Sartorelli   +7 more
doaj   +1 more source

Circular dichroism of designed peptide helices and β-hairpins: analysis of trp- and tyr-rich peptides [PDF]

, 2005
VCD versus ECD spectroscopy. Peptides rich in aromatic residues yield anomalous far-UV electronic circular dichroism (ECD) spectra that preclude secondary structure assignment.
Anderson, Aravinda, Aravinda, Aravinda, Aravinda, Aravinda, Awasthi, Awasthi, Baumruk, Benedetti, Bhattacharyya, Blanco, Blanco, Boricks, Butterfield, Cochran, Das, Espinosa, Gazit, Gellman, Haque, Hilario, Hilario, Hill, Karle, Karle, Karle, Karle, Kaul, Keiderling, Keiderling, Kubelka, Lal, Lipp, Mammi, Manning, Mazaleyrat, Nafie, Narayanan, Narayanan, Pancoska, Pancoska, Pancoska, Pancoska, Paul, Prasad, Raghothama, Sen, Sengupta, Stanger, Sudha, Tatko, Toniolo, Toniolo, Toniolo, Tracz, Venkatraman, Wallimann, Wallimann, Wang, Waters, Waters, Xie, Yasui, Yasui, Yoder, Yoder, Yoder, Zhao, Zhao, Zhao, Zhao, Zuk   +72 more
core   +1 more source

Single‐Step Insertion of Organic Sulfur Into a Fe6C Carbide Carbonyl Cluster, Including the Natural Amino Acid L‐Cysteine: Vibrational Circular Dichroism and Chirality Transfer

Angewandte Chemie, Volume 137, Issue 38, September 15, 2025.
We describe a one‐pot synthetic procedure for the functionalization with organosulfur ligands of hexa‐iron carbide carbonyl clusters. This synthetic procedure is highly versatile and may be applied to alkyl, aryl, and functionalized organic sulfur reagents, including the chiral amino acids L‐ and D‐cysteine.
Francesca Forti, Andrea Pellegrini, Cristiana Cesari, Cristina Femoni, Maria Carmela Iapalucci, Michele Mancinelli, Stefano Zacchini   +6 more
wiley   +1 more source

Bioactive 3-Decalinoyltetramic Acids Derivatives From a Marine-Derived Strain of the Fungus Fusarium equiseti D39

Frontiers in Microbiology, 2019
Two novel 3-decalinoyltetramic acid (3DTA) derivatives, namely fusarisetins C and D (1 and 2), and four known derivatives (3–6) were isolated from the marine-derived fungus Fusarium equiseti D39.
Donglin Zhao, Xiaobin Han, Dan Wang, Minghong Liu, Jianyu Gou, Yulong Peng, Jing Liu, Yiqiang Li, Fei Cao, Chengsheng Zhang   +9 more
doaj   +1 more source