Secondary mould metabolites. Part 34. Isolation and structure elucidation of illudosin, a novel sesquiterpene from Clitocybe illudens using one and two dimensional NMR techniques

1991 ◽  
pp. 1787 ◽  
Author(s):  
Alberto Arnon ◽  
Rosanna Cardillo ◽  
Gianluca Nasini ◽  
Orso Vajna de Pava
Keyword(s):  
Structure Elucidation ◽  
Two Dimensional ◽  
Nmr Techniques

Facile Synthesis of 4,5-Dihydro-1,3,4-Thiadiazoles by 1,3-Dipolar Cycloaddition of Thioisomünchnones

2009 ◽  
Vol 62 (4) ◽  
pp. 356 ◽  
Author(s):  
Bárbara Sánchez ◽  
José Luis Bravo ◽  
María Josí Arívalo ◽  
Ignacio López ◽  
Mark E. Light ◽  
...  
Keyword(s):  
Structure Analysis ◽  
Structure Elucidation ◽  
Room Temperature ◽  
Dipolar Cycloaddition ◽  
Two Dimensional ◽  
Facile Synthesis ◽  
X Ray ◽  
Mild Conditions ◽  
Nmr Techniques

The present paper summarizes a straightforward synthesis of 4,5-dihydro-1,3,4-thiadiazoles by the 1,3-dipolar cycloaddition of thioisomünchnones. These reactions have been carried out in dichloromethane and are essentially complete within 60 min at room temperature. Under such mild conditions the asymmetric version has been explored as well. Unequivocal structure elucidation has been accomplished by means of one- and two-dimensional NMR techniques as well as X-ray structure analysis.

Spectral reassignment and structure elucidation of scopolamine free base through two-dimensional NMR techniques

1991 ◽  
Vol 29 (4) ◽  
pp. 291-300 ◽  
Author(s):  
Catherine Sarazin ◽  
Gérard Goethals ◽  
Jean-Paul Séguin ◽  
Jean-Noël Barbotin
Keyword(s):  
Structure Elucidation ◽  
Two Dimensional ◽  
Free Base ◽  
Nmr Techniques

Structure elucidation of a spirostanol glycoside fromAsparagus officinalis fruits by concerted use of two-dimensional NMR techniques

1988 ◽  
Vol 26 (10) ◽  
pp. 911-918 ◽  
Author(s):  
G. Pant ◽  
M. S. Panwar ◽  
D. S. Negi ◽  
M. S. M. Rawat ◽  
Gareth A. Morris ◽  
...  
Keyword(s):  
Structure Elucidation ◽  
Two Dimensional ◽  
Nmr Techniques ◽  
Spirostanol Glycoside

Structure elucidation and antimicrobial activities of five compounds from Artemisia integrifolia L

2019 ◽  
Vol 74 (9-10) ◽  
pp. 275-278
Author(s):  
Qing-Hu Wang ◽  
Yan-Hua Xu ◽  
Wen-Qiang Bao ◽  
Bi-Le-Ge-Tu Pa ◽  
Jun-Sheng Hao
Keyword(s):  
Mass Spectrometry ◽  
Nuclear Magnetic Resonance ◽  
Structure Elucidation ◽  
Antibacterial Activities ◽  
Antimicrobial Activities ◽  
Ionization Mass ◽  
Spectroscopic Methods ◽  
Two Dimensional ◽  
One Dimensional ◽  
Nmr Techniques

Abstract A new compound, integracid (1), together with four known compounds were isolated from the dichloromethane (CH2Cl2) extract from Artemisia integrifolia L. The structures of compounds (1–5) were elucidated by spectroscopic methods, including ultraviolet, infrared (IR), high resolution-electrospray ionization-mass spectrometry (HR-ESI-MS) and extensive one-dimensional (1D) and two-dimensional (2D) nuclear magnetic resonance (NMR) techniques, and by comparison with data reported in the references. Antibacterial activities of the compounds were evaluated against various bacteria.

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