Results 101 to 110 of about 61,605 (261)

Direct Determination of Absolute Molecular Stereochemistry in Gas Phase by Coulomb Explosion Imaging

Science, 2013
Absolute Images Molecules are held together by a balance of charge between negative electrons and positive nuclei. When multiple electrons are expelled by laser irradiation, the remaining, mutually repulsive nuclei fly apart in a Coulomb explosion ...
M. Pitzer, M. Kunitski, Allan S. Johnson, T. Jahnke, H. Sann, F. Sturm, L. Schmidt, H. Schmidt-Böcking, R. Dörner, J. Stohner, J. Kiedrowski, M. Reggelin, S. Marquardt, Alexander Schiesser, R. Berger, M. Schöffler   +15 more
semanticscholar   +1 more source

Plasma analysis of di- and trihydroxycholestanoic acid diastereoisomers in peroxisomal α-methylacyl-CoA racemase deficiency

Journal of Lipid Research, 2001
We identified a new peroxisomal disorder caused by a deficiency of the enzyme α-methylacyl-coenzyme A (CoA) racemase. Patients with this disorder show elevated plasma levels of pristanic acid and the bile acid intermediates di- and trihydroxycholestanoic
Sacha Ferdinandusse, Henk Overmars, Simone Denis, Hans R. Waterham, Ronald J.A. Wanders, Peter Vreken   +5 more
doaj  

How and How Much Molecular Conformation Affects Electronic Circular Dichroism: The Case of 1,1-Diarylcarbinols

Molecules, 2018
Chiroptical spectra such as electronic circular dichroism (ECD) are said to be much more sensitive to conformation than their non-chiroptical counterparts, however, it is difficult to demonstrate such a common notion in a clear-cut way.
Daniele Padula, Gennaro Pescitelli
doaj   +1 more source

An easy α-glycosylation methodology for the synthesis and stereochemistry of mycoplasma α-glycolipid antigens

Beilstein Journal of Organic Chemistry, 2012
Mycoplasma fermentans possesses unique α-glycolipid antigens (GGPL-I and GGPL-III) at the cytoplasm membrane, which carry a phosphocholine group at the sugar primary (6-OH) position.
Yoshihiro Nishida, Yuko Shingu, Yuan Mengfei, Kazuo Fukuda, Hirofumi Dohi, Sachie Matsuda, Kazuhiro Matsuda   +6 more
doaj   +1 more source

Organotin(IV) Dithiocarbamate Complexes: Chemistry and Biological Activity

Molecules, 2018
Significant attention has been given to organotin(IV) dithiocabamate compounds in recent times. This is due to their ability to stabilize specific stereochemistry in their complexes, and their diverse application in agriculture, biology, catalysis and as
Jerry O. Adeyemi, Damian C. Onwudiwe
doaj   +1 more source

Stereochemistry of the tadalafil diastereoisomers: a critical assessment of vibrational circular dichroism, electronic circular dichroism, and optical rotatory dispersion.

Journal of Medicinal Chemistry, 2013
The stereochemistry of all four stereoisomers of tadalafil is determined using vibrational circular dichroism (VCD), electronic circular dichroism (ECD), and optical rotatory dispersion (ORD) spectroscopy. By comparing experimentally obtained VCD spectra
Shi Qiu, Ewoud De Gussem, K. Tehrani, S. Sergeyev, P. Bultinck, W. Herrebout   +5 more
semanticscholar   +1 more source

A Comparative Study on Interactions of Antimicrobial Peptides L- and D-phenylseptin with 1,2-dimyristoyl-sn-glycero-3-phosphocholine

Applied Sciences, 2019
L-phenylseptin (L-Phes) and D-phenylseptin (D-Phes) are amphibian antimicrobial peptides isolated from the skin secretion of Hypsiboas punctatus. In the N-termini, L-Phes and D-Phes contain three consecutive phenylalanine residues, l-Phe-l-Phe-l-Phe and ...
Batsaikhan Mijiddorj, Yuta Matsuo, Hisako Sato, Kazuyoshi Ueda, Izuru Kawamura   +4 more
doaj   +1 more source

The Chirality Of Life: From Phase Transitions To Astrobiology [PDF]

arXiv, 2008
The search for life elsewhere in the universe is a pivotal question in modern science. However, to address whether life is common in the universe we must first understand the likelihood of abiogenesis by studying the origin of life on Earth. A key missing piece is the origin of biomolecular homochirality: permeating almost every life-form on Earth is ...
arxiv  

Chemical Synthesis of the Lantibiotic Lacticin 481 Reveals the Importance of Lanthionine Stereochemistry

Journal of the American Chemical Society, 2013
Lantibiotics are a family of antibacterial peptide natural products characterized by the post-translational installation of the thioether-containing amino acids lanthionine and methyllanthionine.
P. Knerr, W. A. van der Donk
semanticscholar   +1 more source

Crystal structure of 9-methacryloylanthracene

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the title compound, C18H14O, with systematic name 1-(anthracen-9-yl)-2-methylprop-2-en-1-one, the ketonic C atom lies 0.2030 (16) Å out of the anthryl-ring-system plane. The dihedral angle between the planes of the anthryl and methacryloyl moieties is
Aditya Agrahari, Patrick O. Wagers, Steven M. Schildcrout, John Masnovi, Wiley J. Youngs   +4 more
doaj   +1 more source