Results 121 to 130 of about 738 (169)

Macrophytes and their sedimentary phosphorus niche in lowland rivers. [PDF]

PLoS One
Kaijser W, Brauer VS, Schürings C, Lorenz AW.   +3 more
europepmc   +1 more source

On the Alkaloids of the Rhyzome of Nuphar japonicum D.C.

On the Alkaloids of the Rhyzome of Nuphar japonicum D.C.
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Methiodides of nuphar alkaloids

Journal of Molecular Structure, 1984
A new sesquiterpene alkaloid named nupharic acid (1) was isolated from the aerial part of Nuphar japonicum together with known alkaloids nupharidine (2) and deoxynupharidine (3). Alkaloid 1 is the first example of Nuphar alkaloids that lack the common furan moiety.
Jacek Cybulski, Krystyna Wojtasiewicz
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Phenetic studies in Nuphar Sm. (Nymphaeaceae):variation in sect. Nuphar

Plant Systematics and Evolution, 2003
Previous taxonomic assessments of the hydrophytic genus Nuphar Sm. (Nymphaeaceae) have inadequately considered the range of morphological variation existing in the genus. A comprehensive statistical analysis of morphological features among the recognized taxa of Nuphar is presented here, first using 10 fruit characters to delimit the separation of two ...
exaly   +3 more sources

Nuphar alkaloids with immediately apoptosis-inducing activity from Nuphar pumilum and their structural requirements for the activity

Bioorganic and Medicinal Chemistry Letters, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Hisashi Matsuda
exaly   +3 more sources

Mass spectrometry of nuphar alkaloids

Rapid Communications in Mass Spectrometry, 1991
Abstract This paper summarizes the data obtained during the last 20 years on the mass spectrometric behaviour of C 15 and thio−C 30 nuphar alkaloids.
Olga Bortolini, Orenella Curcuruto, Pietro Traldi, Jerzy T. Wróbel, Kàroly Vékey   +4 more
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Methiodides of nuphar alkaloids

Journal of Molecular Structure, 1983
Abstract The 13 C NMR spectra of deoxynupharidine, 7-epideoxynupharidine and thiobinupharidine methiodides have been studied and the correlations between the stereochemistry of these compounds and corresponding chemical shifts are described.
Jacek Cybulski, Krystyna Wojtasiewicz, Jerzy T. Wróbel   +2 more
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PROPERTIES OF SULFUR CONTAINING NUPHAR ALKALOIDS

Pure and Applied Chemistry, 1977
Abstract The various types of Nuphar alkaloids are noted and thereafter attention is focused on one of these types, the thiaspirane Nuphar alkaloids. A brief discussion of the spectral characteristics useful in ascertaining the gross structure is followed by a more detailed discussion of the spectral properties, primarily 1H and 13C NMR and the CD ...
R. T. LaLonde, C. Wong
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Sur le Nuphar pumilum du Jura et le polymorphisme des Nuphar pumilum, et Nuphar luteum

Bulletin mensuel - Société botanique de Lyon, 1891
Viviand-Morel Joseph-Victor. Sur le Nuphar pumilum du Jura et le polymorphisme des Nuphar pumilum, et Nuphar luteum. In: Bulletin mensuel - Société botanique de Lyon, tome 9, bulletin 1, 1891. pp. 40-42.
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Sulfur Containing Nuphar Alkaloids

1980
The chemistry of this group of Nuphar Alkaloids was not well known till now since the system has been shown not to be very reactive to most of common reagents, which usually are used for transformations and degradation of an alkaloid system 1.
Jerzy T. Wróbel, Halszka Bielawska, Agnieszka Iwanow, Joanna Ruszkowska   +3 more
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