Results 41 to 50 of about 330,072 (330)

Carbon-13 NMR Spectra of Carotenoids [PDF]

Pure and Applied Chemistry, 1976
Abstract
openaire   +1 more source

Peripherally-metallated porphyrins: meso-n1-porphyrinyl-platinum(II) complexes of 5,15-diaryl- and 5,10,15-triarylporphyrins [PDF]

, 2002
Attempted metathesis reactions of peripherally-metallated meso-η1-porphyrinylplatinum(II) complexes such as trans-[PtBr(NiDPP)(PPh3)2] (H2DPP = 5,15-diphenylporphyrin) with organolithium reagents fail due to competitive addition at the porphyrin ring ...
Arnold, Dennis, Edwards, Alice, Hartnell, Regan   +2 more
core   +2 more sources

Carbon-13 NMR Spectra of Cotylenins

Agricultural and Biological Chemistry, 1979
(1979). Carbon-13 NMR Spectra of Cotylenins. Agricultural and Biological Chemistry: Vol. 43, No. 2, pp. 385-387.
Takeshi SASSA, Akihiro TAKAHAMA
openaire   +2 more sources

In Silico Modeling of Spirolides and Gymnodimines: Determination of S Configuration at Butenolide Ring Carbon C-4

Toxins, 2020
Only few naturally occurring cyclic imines have been fully structurally elucidated or synthesized to date. The configuration at the C-4 carbon plays a pivotal role in the neurotoxicity of many of these metabolites, for example, gymnodomines (GYMs) and ...
Christian Zurhelle, Tilmann Harder, Urban Tillmann, Jan Tebben   +3 more
doaj   +1 more source

The DEPTQ⁺ Experiment: Leveling the DEPT Signal Intensities and Clean Spectral Editing for Determining CH_n Multiplicities

Molecules, 2021
We propose a new 13C DEPTQ+ NMR experiment, based on the improved DEPTQ experiment, which is designed to unequivocally identify all carbon multiplicities (Cq, CH, CH2, and CH3) in two experiments. Compared to this improved DEPTQ experiment, the DEPTQ+ is
Peter Bigler, Camilo Melendez, Julien Furrer   +2 more
doaj   +1 more source

New stable phosphorus ylide (p-tolyl)(3)P = CHCOC6H4 (p-CN) and its metal complexes : crystal and molecular structure, theoretical study and antibacterial investigation

, 2020
A new stable phosphorus ylide (p-tolyl)(3)P = CHCOC6H4(p-CN) (Y) was synthesized and a series of novel complexes based on metalated phosphorus ylides were prepared through the reaction of (p-tolyl)(3)P = CHCOC6H4(p-CN) with mercury(II) halides, AgNO3 and
Bayat, Mehdi, Rad, Abdolkarim Chehregani, Sabounchei, Seyyed Javad, Sedghi, Asieh, Van Hecke, Kristof, Vatannavaz, Leila   +5 more
core   +1 more source

Chemical and biological investigations of Delonix regia (Bojer ex Hook.) Raf. [PDF]

, 2010
U radu je opisana izolacija pet sastojaka petroleterske i diklormetanske frakcije metanolnog ekstrakta kore biljke Delonix regia: lupeol (1), epilupeol (2), β-sitosterol (3), stigmasterol (4) i p-metoksibenzaldehid (5). Nadalje, testirano je antimikrobno
A. Bauer, Abdul Wahab, B. Meyer, B. Vanwagenen, F. Jungalwala, F. Maniruzzaman, G. Morales, Israt Jahan, J. McLaughlin, M. Rahman, Mohammad Islam, Mohammad Kaisar, Mohammad Rahman, Mohammad Rashid, Mohammed Rahman, O. Lawal, R. Harish, U. Kolak, Y. Aratanechemuge   +18 more
core   +3 more sources

Antibiofilm activity of a chionodracine‐derived peptide by NMR‐based metabolomics of cell‐free supernatant of Acinetobacter baumannii clinical strains

FEBS Open Bio, EarlyView.
KHS‐Cnd peptide is able to impair biofilm formation and disaggregate mature biofilms in Acinetobacter baumannii clinical isolates. Differences in extracellular metabolites reflect changes in biofilm metabolism due to KHS‐Cnd treatment. Among the differentially represented extracellular metabolites upon KHS‐Cnd treatment, the significantly altered ...
Fernando Porcelli, Enrico Landi, Francesco Maiurano, Irene Paris, Rosanna Papa, Marco Artini, Laura Selan, Stefano Borocci, Francesco Buonocore, Esther Imperlini   +9 more
wiley   +1 more source

Three-dimensional nuclear spin positioning using coherent radio-frequency control

, 2018
Distance measurements via the dipolar interaction are fundamental to the application of nuclear magnetic resonance (NMR) to molecular structure determination, but they only provide information on the absolute distance $r$ and polar angle $\theta$ between
Cujia, K. S., Degen, C. L., Herb, K., Zopes, J.   +3 more
core   +1 more source

Chiral Modification of the Tetrakis(pentafluorophenyl)borate Anion with Myrtanyl Groups [PDF]

, 2019
The synthesis and characterization of chiral [B(C6F5)4]– derivatives bearing a myrtanyl group instead of a fluoro substituent in the para position are described.
Oestreich, Martin, Pommerening, Phillip
core   +1 more source