Journal ArticleDOI
Carbon-13 NMR spectroscopy of steroidal sapogenins and steroidal saponins
TLDR
The 13 C NMR chemical shifts of 130 naturally occurring steroidal sapogenins and saponin derivatives published up to 1983 are listed and a number of methods for signal assignment are explained as discussed by the authors.About:
This article is published in Phytochemistry.The article was published on 1985-10-29. It has received 549 citations till now. The article focuses on the topics: Sapogenin & Carbon-13 NMR.read more
Citations
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Journal ArticleDOI
NMR spectroscopy in the structural elucidation of oligosaccharides and glycosides.
TL;DR: The potential of one- and two-dimensional NMR techniques for the identification of individual sugar residues, their anomeric configuration, interglycosidic linkages, sequencing and the site of any appended group in establishing the structures of naturally occurring oligosaccharides and glycosides is presented.
Journal ArticleDOI
The analysis of onion and garlic.
TL;DR: The literature about the major volatile and non-volatile phytoconstituents of onion and garlic has been reviewed, with particular attention given to the different methodology developed to perform chemical analysis, including separation and structural elucidation.
Journal ArticleDOI
The chemistry and biological significance of saponins in foods and feedingstuffs.
TL;DR: Methods currently used for the quantitative analysis of saponins, sapogenols, and glycoalkaloids are critically considered; advances in the use of newer methods being emphasized.
Journal ArticleDOI
The Story of Beta-sitosterol-A Review
TL;DR: Phytosterols are a subgroup of the steroids, as an important class of bioorganic molecules, widespread in plants, animals, marines as well as fungi and have similarity to cholesterol in structure.
Journal ArticleDOI
Saponins in Tribulus terrestris – Chemistry and Bioactivity
I. Kostova,D. Dinchev +1 more
TL;DR: Tribulus terrestris is a valuable herb known for its application in the folk medicine in many parts of the world as mentioned in this paper, which is used for fertility and libido disorders in men and women, as well as for treatment of cardiac diseases.
References
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A Rapid Permethylation of Glycolipid, and Polysaccharide Catalyzed by Methylsulfinyl Carbanion in Dimethyl Sulfoxide
TL;DR: It was undertaken to demonstrate the presence of various kinds of acyl residue in this solvent by ` hydroxylaminolysis' of the urinary glyco protein.
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A study of 13CH coupling constants in hexopyranoses
Klaus Bock,Christian Pedersen +1 more
TL;DR: In this article, the direct coupling constants between the anomeric carbon atoms and protons {1J[13C-H(1)]} were found to be ca. 160 in the β-anomers and ca. 170 Hz in the α-anomer; the difference of ca. 10 Hz between pairs of anomers was found in almost all cases.
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Further Studies on the Assignment of Signals in 13C Magnetic Resonance Spectra of Aldoses and Derived Methyl Glycosides
Philip A.J. Gorin,Mytosk Mazurek +1 more
TL;DR: The 13C signals of most of the more common sugars and their methyl glycosides have been assigned, based on the α-carbon and β-carbon effects that occur on deuterium substitution.
Journal ArticleDOI
Determination of the absolute configuration of a secondary hydroxy group in a chiral secondary alcohol using glycosidation shifts in carbon-13 nuclear magnetic resonance spectroscopy
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13C nmr study of α- and β-anomeric pairs of d-mannopyranosides and l-rhamnopyranosides
TL;DR: The results obtained in this paper are valuable for the structure studies of plant-glycosides as well as carbohydrates, especially for determination of anomeric configurations of mannosides and rhamnosides which has been extremely difficult by other classical techniques.