Journal ArticleDOI
Triterpenoid saponins discovered between 1987 and 1989.
Shashi B. Mahato,Ashoke K. Nandy +1 more
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TLDR
A compilation of the triterpenoid saponins isolated during the period from 1987 to mid-1989, together with their occurrence, available physical data and spectroscopy used for their characterization is included.About:
This article is published in Phytochemistry.The article was published on 1991-01-01. It has received 64 citations till now. The article focuses on the topics: Triterpene.read more
Citations
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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.
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13C NMR spectra of pentacyclic triterpenoids--a compilation and some salient features
Shashi B. Mahato,Asish P. Kundu +1 more
TL;DR: In this paper, a compilation of the 13C NMR data of a selected variety of naturally occurring pentacyclic triterpenoids, arranged skeletonwise, is provided.
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Saponins, classification and occurrence in the plant kingdom
TL;DR: The oleanane skeleton was the most common skeleton and is present in most orders of the plant kingdom, and the relationship between the type of skeleton and the plant origin was investigated.
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A review of the biological and pharmacological activities of saponins
TL;DR: This paper reviews the important biological and pharmacological activities of saponins reported over the last few years, which include cancer-related activity, as well as antiphlogistic and antiallergic, immunomodulating, antihepatotoxic, antiviral, hypoglycemic, antifungal and molluscicidal activities.
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In vitro effects of and interactions between tannins and saponins and fate of tannins in the rumen
TL;DR: The results suggested that the rate of digestion is affected to a greater extent than the potential extent of digestion or the in vitro true digestibility and that different tannins even at the same level have different degrees of effect.
References
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Journal ArticleDOI
Rapid chromatographic technique for preparative separations with moderate resolution
Abstract: (11) Potassium ferricyanide has previously been used to convert w'c-1,2-dicarboxylate groups to double bonds. See, for example, L. F. Fieser and M. J. Haddadln, J. Am. Chem. Soc., 86, 2392 (1964). The oxidative dldecarboxylation of 1,2-dlcarboxyllc acids is, of course, a well-known process. See Inter alia (a) C. A. Grob, M. Ohta, and A. Weiss, Helv. Chim. Acta, 41, 1911 (1958); and (b) E. N. Cain, R. Vukov, and S. Masamune, J. Chem. Soc. D, 98 (1969).
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Investigation of exchange processes by two‐dimensional NMR spectroscopy
TL;DR: In this paper, a general technique for the investigation of exchange processes in molecular systems is proposed and demonstrated and applications include the study of chemical exchange, of magnetization transfer by inter-and intramolecular relaxation in liquids, and of spin diffusion and cross-relaxation processes in solids.
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Investigation of complex networks of spin-spin coupling by two-dimensional NMR
Ad Bax,Ray Freeman +1 more
TL;DR: In this paper, the two-dimensional Fourier transform was applied to a sample of 9-hydroxytricyclodecan-2,5-dione.
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Fast atom bombardment of solids (F.A.B.): a new ion source for mass spectrometry
TL;DR: A method for obtaining high-quality mass spectra of molecules which previously were difficult or impossible to study by ionisation methods is described in this paper, where a new method is proposed to obtain high quality mass spectras of molecules.
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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.