Iridoid and Bisiridoid Glycosides from Globularia cordifolia

2003 ◽  
Vol 58 (5-6) ◽  
pp. 337-341 ◽  
Author(s):  
Hasan Kirmizibekmez ◽  
Ihsan Çaliş ◽  
Pinar Akbay ◽  
Otto Sticher
Keyword(s):  
Nmr Spectroscopy ◽  
Methanolic Extract ◽  
Iridoid Glycosides ◽  
2D Nmr ◽  
Iridoid Glycoside ◽  
2D Nmr Spectroscopy

Abstract From the methanolic extract of the underground parts of Globularia cordifolia, a new iridoid glycoside, 5-hydroxydavisioside (1) and a new bisiridoid glycoside, globuloside C (2) were isolated along with six known iridoid glycosides, aucubin, melampyroside, monomelittoside, globularifolin, alpinoside and asperuloside. The structures of the isolates were established by 1D and 2D NMR spectroscopy in combination with IR, UV and MS analyses.

A New Sesquiterpene Lactone Sulfate from Reichardia gaditana (Asteraceae)

2007 ◽  
Vol 62 (1) ◽  
pp. 132-134 ◽  
Author(s):  
Christian Zidorn ◽  
Ernst-Peter Ellmerer ◽  
Werner Heller ◽  
Richard Greil ◽  
Manuela Guggenberger ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
High Resolution ◽  
Structure Elucidation ◽  
Methanolic Extract ◽  
High Resolution Mass Spectrometry ◽  
2D Nmr ◽  
2D Nmr Spectroscopy ◽  
Asteraceae Family ◽  
Resolution Mass

The new sesquiterpenoid 8-deoxy-15-(3′-hydroxy-2′-methyl-propanoyl)-lactucin 3′-sulfate (1) was isolated from the methanolic extract of roots of Reichardia gaditana L. The compound was isolated by silica gel column chromatography (CC) and repeated Sephadex LH-20 CC. Structure elucidation was accomplished by high-resolution mass spectrometry and by 1D- and 2D-NMR spectroscopy. The chemosystematic significance of the new compound is discussed in the context of sesquiterpenoids from other members of the Lactuceae tribe of the Asteraceae family.

A New Eudesmane Derivative from Leontodon tuberosus

2004 ◽  
Vol 59 (1) ◽  
pp. 95-99 ◽  
Author(s):  
Renate Spitaler ◽  
Ernst-P. Ellmerer ◽  
Christian Zidorn ◽  
Hermann Stuppner
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Phenolic Acids ◽  
Methanolic Extract ◽  
2D Nmr ◽  
The Novel ◽  
2D Nmr Spectroscopy

Abstract Besides the known compounds 2,4,6-trihydroxyacetophenone 4-O-β -D-glucopyranoside and syringaresinol 4’-O-β -D-glucopyranoside, the novel sesquiterpenoid 1,2-dehydro-3-oxocostic acid β - D-glucopyranoside ester was isolated from Leontodon tuberosus L. and its structure established by mass spectrometry and 1D- and 2D-NMR spectroscopy. Additionally, a number of fatty and phenolic acids was identified in the crude methanolic extract by HPLC-DAD and HPLC-MS. The chemosystematic impact of the new sesquiterpenoid is discussed briefly.

Two New Acylated Iridoid Glycosides from Verbascum undulatum

2000 ◽  
Vol 55 (7-8) ◽  
pp. 667-670 ◽  
Author(s):  
Prokopios Magiatis ◽  
Eleni Melliou ◽  
Eugenia Tsitsa ◽  
Catherine Charvala ◽  
Sofia Mitaku
Keyword(s):  
Nmr Spectroscopy ◽  
Spectral Methods ◽  
Iridoid Glycosides ◽  
2D Nmr ◽  
2D Nmr Spectroscopy ◽  
Aerial Parts ◽  
Phytochemical Investigation

Abstract On further phytochemical investigation of the aerial parts of Verbascum undulatum, two new acylated iridoid glycosides, 6-O-[3-O-(trans-3,4-dim ethoxycinnamoyl)-α- ʟ-rhamnopyranosyl] aucubin (1) and 6-O -[3-O-(trans-p-methoxycinnamoyl)-α-ʟ-rhamnopyranosyl]aucubin (2) were isolated. These structures were determined by spectral methods, mainly by 1D and 2D NMR spectroscopy.

Iridoid and Phenolic Glycosides from Wulfenia carinthiaca

2002 ◽  
Vol 57 (11-12) ◽  
pp. 969-975 ◽  
Author(s):  
Ulrike W. Arnold ◽  
Christian Zidorn ◽  
Ernst P. Ellmerer ◽  
Hermann Stuppner
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
High Resolution ◽  
Methanolic Extract ◽  
High Resolution Mass Spectrometry ◽  
Iridoid Glycosides ◽  
Iridoid Glycoside ◽  
Phenylpropanoid Glycoside ◽  
Phenylpropanoid Glycosides ◽  
Resolution Mass

Two new phenylpropanoid glycosides (2′-O-acetylplantamajoside and 2′-O, 6″-O-diacetylplantamajoside), a new iridoid glycoside (10-O-(cinnamoyl)-6′-O-(desacetylalpinosidyl)-catalpol), the two known iridoid glycosides globularin and isoscrophularioside, and the known phenylpropanoid glycoside platamajoside were isolated from the methanolic extract of the underground parts of Wulfenia carinthiaca. Structure elucidations were based on high-resolution mass spectrometry and extensive 1-D and 2-D NMR spectroscopy.

scholarly journals Ursane-Type Saponins from Zygophyllum cornutum

2013 ◽  
Vol 8 (5) ◽  
pp. 1934578X1300800
Author(s):  
Soumeya Bencharif-Betina ◽  
Tomofumi Miyamoto ◽  
Chiaki Tanaka ◽  
Zahia Kabouche ◽  
Anne-Claire Mitaine-Offer ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Methanolic Extract ◽  
2D Nmr ◽  
2D Nmr Spectroscopy ◽  
Fab Mass Spectrometry ◽  
Whole Plant ◽  
First Time

Seven known ursane-type saponins were isolated from the methanolic extract of the whole plant of Zygophyllum cornutum Coss, and identified by 2D NMR spectroscopy and FAB-mass spectrometry. They are reported in this species for the first time and might be chemotaxonomically significant for the genus Zygophyllum.

scholarly journals Steroidal Saponins from the Fruits of Cestrum ruizteranianum

2011 ◽  
Vol 6 (12) ◽  
pp. 1934578X1100601
Author(s):  
Galarraga M. Elier ◽  
Anne-Claire Mitaine-Offer ◽  
Juan Manuel Amaro-Luis ◽  
Tomofumi Miyamoto ◽  
Chiaki Tanaka ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Methanolic Extract ◽  
2D Nmr ◽  
Steroidal Saponins ◽  
2D Nmr Spectroscopy ◽  
First Time

Seven spirostane and furostane-type glycosides were isolated from the aqueous methanolic extract of the fruits of Cestrum ruizteranianum and characterized mainly by 2D NMR spectroscopy and mass spectrometry. These known saponins belong to the Δ5-spirostene and Δ5-furostene series and are reported in this species for the first time.

Demonstration of 2D NMR Spectroscopy in a Powered Magnet at 25 T Using Cascade Field Regulation

2019 ◽  
Author(s):  
Benjamin D. McPheron ◽  
Jeffrey L. Schiano ◽  
Brian F. Thomson ◽  
Kiran K. Shetty ◽  
William W. Brey
Keyword(s):  
Nmr Spectroscopy ◽  
2D Nmr ◽  
2D Nmr Spectroscopy

scholarly journals Ambient-Temperature Synthesis of (E)-N-(3-(tert-Butyl)-1-methyl-1H-pyrazol-5-yl)-1-(pyridin-2-yl)methanimine

Molbank ◽  
10.3390/m1250 ◽  
2021 ◽  
Vol 2021 (3) ◽  
pp. M1250
Author(s):  
Diana Becerra ◽  
Justo Cobo ◽  
Juan-Carlos Castillo
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Ambient Temperature ◽  
Magnesium Sulfate ◽  
Elemental Analysis ◽  
Condensation Reaction ◽  
2D Nmr ◽  
2D Nmr Spectroscopy ◽  
Temperature Synthesis ◽  
Tert Butyl

We report the ambient-temperature synthesis of novel (E)-N-(3-(tert-butyl)-1-methyl-1H-pyrazol-5-yl)-1-(pyridin-2-yl)methanamine 3 in 81% yield by a condensation reaction between 3-(tert-butyl)-1-methyl-1H-pyrazol-5-amine 1 and 2-pyridinecarboxaldehyde 2 in methanol using magnesium sulfate as a drying agent. The N-pyrazolyl imine 3 was full characterized by IR, 1D, and 2D NMR spectroscopy, mass spectrometry, and elemental analysis.

Highly NIR-emitting ytterbium complexes containing 2-(tosylaminobenzylidene)-N-benzoylhydrazone anions: structure in solution and use for bioimaging

2021 ◽  
Author(s):  
Anton D Kovalenko ◽  
Alexander A. Pavlov ◽  
Ilya D. Ustinovich ◽  
Alena S. Kalyakina ◽  
Alexander S Goloveshkin ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Lanthanide Complexes ◽  
2D Nmr ◽  
2D Nmr Spectroscopy ◽  
Ytterbium Complexes ◽  
Solution Behaviour ◽  
Structure In Solution

Abstract: Solution behaviour in DMSO using 1D and 2D NMR spectroscopy was performed for lanthanide complexes Ln(L)(HL) and Ln(HL)2Cl, containing non-macrocyclic 2-(tosylamino)-benzylidene-N-benzoylhydrazone (H2L), and the structure of [Yb(L)]+ cation in...

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