scholarly journals Hydrothermal liquefaction oil and hydrotreated product from pine feedstock characterized by heteronuclear two-dimensional NMR spectroscopy and FT-ICR mass spectrometry

Fuel ◽  
2014 ◽  
Vol 137 ◽  
pp. 60-69 ◽  
Author(s):  
Nilusha Sudasinghe ◽  
John R. Cort ◽  
Richard Hallen ◽  
Mariefel Olarte ◽  
Andrew Schmidt ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Hydrothermal Liquefaction ◽  
Two Dimensional ◽  
Ft Icr

scholarly journals Ircinal E, a New Manzamine Derivative from the Indonesian Marine Sponge Acanthostrongylophora ingens

2015 ◽  
Vol 10 (11) ◽  
pp. 1934578X1501001 ◽  
Author(s):  
Mousa AlTarabeen ◽  
Georgios Daletos ◽  
Weaam Ebrahim ◽  
Werner E. G. Müller ◽  
Rudolf Hartmann ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
High Resolution ◽  
Cell Line ◽  
Marine Sponge ◽  
High Resolution Mass Spectrometry ◽  
Two Dimensional ◽  
Meoh Extract ◽  
L5178y Cell ◽  
Resolution Mass

Chemical investigation of the MeOH extract of the sponge Acanthostrongylophora ingens afforded the new manzamine derivative ircinal E (1), in addition to six known metabolites (2–7). The structure of the new compound was unequivocally elucidated using one- and two-dimensional NMR spectroscopy, as well as high-resolution mass spectrometry. Compounds 1–6 exhibited strong to moderate cytotoxicity against the murine lymphoma L5178Y cell line with IC50 values ranging from 2.8 to 21.7 μM.

scholarly journals TG/DTG, FT-ICR Mass Spectrometry, and NMR Spectroscopy Study of Heavy Fuel Oil

2015 ◽  
Vol 29 (12) ◽  
pp. 7825-7835 ◽  
Author(s):  
A. M. Elbaz ◽  
Abdul Gani ◽  
Nadim Hourani ◽  
Abdul-Hamid Emwas ◽  
S. Mani Sarathy ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Fuel Oil ◽  
Spectroscopy Study ◽  
Heavy Fuel Oil ◽  
Ft Icr

Terpyridine - Ruthenium Complexes as Building Blocks for New Metallo-Supramolecular Architectures

2004 ◽  
Vol 57 (5) ◽  
pp. 419 ◽  
Author(s):  
Harald Hofmeier ◽  
Philip R. Andres ◽  
Richard Hoogenboom ◽  
Eberhardt Herdtweck ◽  
Ulrich S. Schubert
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Functional Groups ◽  
Building Blocks ◽  
Two Dimensional ◽  
X Ray ◽  
Supramolecular Architectures ◽  
Directed Synthesis ◽  
Materials Research ◽  
Terpyridine Ligands

Supramolecular architectures are of great interest in modern materials research. The directed synthesis of asym-metric 2,2′:6′,2′′-terpyridine ruthenium(II) complexes is an important tool towards such systems. In this contribution, we report the synthesis of asymmetric terpyridine ruthenium(II) complexes as models for supramolecular architectures and polymers. Terpyridines, bearing different functional groups in the 4′-position, were complexed with unfunctionalized terpyridine ligands using Ru(III)/Ru(II) chemistry. The resulting compounds were characterized by UV-vis, one- and two-dimensional NMR spectroscopy as well as MALDI-TOF mass spectrometry. In addition, X-ray structure analysis was performed for one selected example.

High-field FT-ICR mass spectrometry and NMR spectroscopy to characterize DOM removal through a nanofiltration pilot plant

2014 ◽  
Vol 67 ◽  
pp. 154-165 ◽  
Author(s):  
Nuria Cortés-Francisco ◽  
Mourad Harir ◽  
Marianna Lucio ◽  
Gemma Ribera ◽  
Xavier Martínez-Lladó ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Pilot Plant ◽  
High Field ◽  
Ft Icr

Pyridine Alkaloids From A Parthenium Hybrid

2002 ◽  
Vol 57 (3-4) ◽  
pp. 211-215 ◽  
Author(s):  
Galal T. Maatooq ◽  
Joseph J. Hoffmann
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Two Dimensional ◽  
Parthenium Argentatum

Two pyridine alkaloids were isolated from the derubberized resin of the hybrid Parthenium argentatum x P. tomentosa. These alkaloids are (±)-N-[4-(1-aminoethyl) phenyl]-4-[3-methylbutenylidine]- 1, 4-dihydropyridine (guayulamine A) and (±)-N-[4-(1-aminoethyl) phenyl]-4- [4-methylpentenylidine]-1, 4-dihydropyridine (guayulamine B). The structures were established by one- and two-dimensional NMR spectroscopy and mass spectrometry

scholarly journals Bathyptilones: Terpenoids from an Antarctic Sea Pen, Anthoptilum grandiflorum (Verrill, 1879)

Marine Drugs ◽  
2019 ◽  
Vol 17 (9) ◽  
pp. 513 ◽  
Author(s):  
Santana A.L. Thomas ◽  
Anthony Sanchez ◽  
Younghoon Kee ◽  
Nerida G. Wilson ◽  
Bill J. Baker
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Cell Line ◽  
Structure Elucidation ◽  
Two Dimensional ◽  
Mammalian Cell Line ◽  
X Ray ◽  
X Ray Crystallography ◽  
Austral Autumn ◽  
Skeleton Structure

An Antarctic coral belonging to the order Pennatulacea, collected during the 2013 austral autumn by trawl from 662 to 944 m depth, has yielded three new briarane diterpenes, bathyptilone A-C (1–3) along with a trinorditerpene, enbepeanone A (4), which bears a new carbon skeleton. Structure elucidation was facilitated by one- and two-dimensional NMR spectroscopy, mass spectrometry and confirmed by X-ray crystallography. The three compounds were screened in four cancer cell lines. Bathyptilone A displayed selective nanomolar cytotoxicity against the neurogenic mammalian cell line Ntera-2.

Unusual Terpyridines as Ligands for Novel Light-Emitting Iridium(III) Complexes: Synthesis and Characterization

2006 ◽  
Vol 59 (11) ◽  
pp. 773 ◽  
Author(s):  
Andreas Winter ◽  
Christoph Ulbricht ◽  
Elisabeth Holder ◽  
Nikolaus Risch ◽  
Ulrich S. Schubert
Keyword(s):  
Mass Spectrometry ◽  
Optical Properties ◽  
Nmr Spectroscopy ◽  
Splitting Method ◽  
Synthesis And Characterization ◽  
Two Dimensional ◽  
Photoluminescence Spectra ◽  
Light Emitting ◽  
Yellow Orange ◽  
Terpyridine Ligands

Based on S-shaped terpyridines, a series of yellow, orange, and red-orange light-emitting iridium(iii) complexes has been synthesized. The respective compounds have been prepared by the bridge-splitting method starting from the dimeric precursor complexes [(ppy)2Ir-μ-Cl]2, [(ppy-CHO)2Ir-μ-Cl]2, and [(c6)2Ir-μ-Cl]2. The products have been fully characterized by one- and two-dimensional (1H–1H correlation) NMR spectroscopy, elemental analysis, and MALDI-TOF mass spectrometry revealing the successful coordination of the iridium(iii) centres to the S-shaped terpyridine ligands. Furthermore, the quantitative coordination has been verified by the photophysical and electrochemical properties of the mononuclear iridium(iii) complexes. The photoluminescence spectra have shown strong emissions with maxima between 538 and 600 nm. The study of the optical properties of these novel complexes has indicated that the colour shifts are mainly depending on the nature of the cyclometallating ligands.

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