Synthesis and structure elucidation of five new conjugates of oleanolic acid derivatives and chalcones using 1D and 2D NMR spectroscopy

2012 ◽  
Vol 50 (3) ◽  
pp. 236-241 ◽  
Author(s):  
Chu Tang ◽  
Linhui Zhu ◽  
Jun Li ◽  
Rui Qin ◽  
Chang Liu ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Oleanolic Acid ◽  
Structure Elucidation ◽  
2D Nmr ◽  
2D Nmr Spectroscopy

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.

3-Oxo-12α-hydroxyfriedelane from Maytenus gonoclada : structure elucidation by 1 H and 13 C chemical shift assignments and 2D-NMR spectroscopy

2007 ◽  
Vol 45 (10) ◽  
pp. 895-898 ◽  
Author(s):  
Mauro Lúcio G. Oliveira ◽  
Lucienir Pains Duarte ◽  
Grácia Divina F. Silva ◽  
Sidney Augusto Vieira Filho ◽  
Vagner Fernandes Knupp ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Chemical Shift ◽  
Structure Elucidation ◽  
2D Nmr ◽  
Chemical Shift Assignments ◽  
2D Nmr Spectroscopy

Structure elucidation of a novel group of dithiocarbamate derivatives using 1D and 2D NMR spectroscopy

2006 ◽  
Vol 44 (7) ◽  
pp. 720-723 ◽  
Author(s):  
Qin Li ◽  
Chunhui Yang ◽  
Ze-Mei Ge ◽  
Runtao Li ◽  
Yuxin Cui
Keyword(s):  
Nmr Spectroscopy ◽  
Structure Elucidation ◽  
2D Nmr ◽  
2D Nmr Spectroscopy ◽  
Dithiocarbamate Derivatives

Laciniatoside V: A New Bis-iridoid Glucoside. Isolation and Structure Elucidation by 2D NMR Spectroscopy

1989 ◽  
Vol 52 (1) ◽  
pp. 135-142 ◽  
Author(s):  
Benjamin Podányi ◽  
R. Stephen Reid ◽  
Akos Kocsis ◽  
László Szabó
Keyword(s):  
Nmr Spectroscopy ◽  
Structure Elucidation ◽  
2D Nmr ◽  
Iridoid Glucoside ◽  
2D Nmr Spectroscopy

Epikatonic acid fromAustroplenckia populnea: structure elucidation by 2D NMR spectroscopy and X-ray crystallography

2002 ◽  
Vol 40 (5) ◽  
pp. 366-370 ◽  
Author(s):  
G. D. F. Silva ◽  
L. P. Duarte ◽  
S. A. Vieira Filho ◽  
A. C. Doriguetto ◽  
Y. P. Mascarenhas ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Structure Elucidation ◽  
2D Nmr ◽  
2D Nmr Spectroscopy ◽  
X Ray ◽  
X Ray Crystallography

Structure Elucidation of the Gallium–Ornibactin Complex by 2D-NMR Spectroscopy

1993 ◽  
Vol 1993 (1) ◽  
pp. 43-48 ◽  
Author(s):  
Holger Stephan ◽  
Stefan Freund ◽  
Jean-Marie Meyer ◽  
Günther Winkelmann ◽  
Günther Jung
Keyword(s):  
Nmr Spectroscopy ◽  
Structure Elucidation ◽  
2D Nmr ◽  
2D Nmr Spectroscopy
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