Molecular Composition Study of Mumijo from Different Geographic Areas Using Size-Exclusion Chromatography, NMR Spectroscopy, and High-Resolution Mass Spectrometry

2012 ◽  
pp. 283-287 ◽  
Author(s):  
A. I. Konstantinov ◽  
G. N. Vladimirov ◽  
A. S. Grigoryev ◽  
A. V. Kudryavtsev ◽  
I. V. Perminova ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
High Resolution ◽  
Size Exclusion Chromatography ◽  
High Resolution Mass Spectrometry ◽  
Molecular Composition ◽  
Size Exclusion ◽  
Exclusion Chromatography ◽  
Composition Study ◽  
Resolution Mass

Mapping the Compaction of Discrete Polymer Chains by Size Exclusion Chromatography Coupled to High-Resolution Mass Spectrometry

2019 ◽  
Vol 52 (6) ◽  
pp. 2597-2606 ◽  
Author(s):  
Tobias Nitsche ◽  
Jan Steinkoenig ◽  
Kevin De Bruycker ◽  
Fabian R. Bloesser ◽  
Stephen J. Blanksby ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
Size Exclusion Chromatography ◽  
High Resolution Mass Spectrometry ◽  
Polymer Chains ◽  
Size Exclusion ◽  
High Resolution Mass ◽  
Exclusion Chromatography ◽  
Resolution Mass

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 Two New Tropane Alkaloids from the Bark of Erythroxylum vacciniifolium Mart. (Erythroxylaceae)

2009 ◽  
Vol 4 (10) ◽  
pp. 1934578X0900401 ◽  
Author(s):  
Emerson F. Queiroz ◽  
Boris Zanolari ◽  
Andrew Marston ◽  
David Guilet ◽  
Leila Burgener ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
High Resolution ◽  
Traditional Medicine ◽  
High Resolution Mass Spectrometry ◽  
Tropane Alkaloids ◽  
Tropane Alkaloid ◽  
High Resolution Mass ◽  
Indigenous Plant ◽  
Resolution Mass

Two new tropane alkaloid N-oxides substituted by a methylpyrrole moiety were isolated from the bark of Erythroxylum vacciniifolium Mart. (Erythroxylaceae), a Brazilian indigenous plant, locally known as catuaba and used in traditional medicine as an aphrodisiac. The alkaloid structures were determined by a combination of high resolution mass spectrometry and multi-dimensional NMR spectroscopy.

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