Results 161 to 170 of about 1,804 (199)

Phylogenetic relationships in Nuphar (Nymphaeaceae): evidence from morphology, chloroplast DNA, and nuclear ribosomal DNA †

American Journal of Botany, 1999
The genus Nuphar consists of yellow-flowered waterlilies and is widely distributed in north-temperate bodies of water. Despite regular taxonomic evaluation of these plants, no explicit phylogenetic hypotheses have been proposed for the genus.
Donald J Padgett, Donald Henry Les, D H Les   +2 more
exaly   +2 more sources

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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
openaire   +1 more source

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
openaire   +1 more source

Nuphar Alkaloids with Immediately Apoptosis‐Inducing Activity from Nuphar pumilum and Their Structural Requirements for the Activity.

ChemInform, 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, Kazutoshi, Yoshida, Katsutoshi, Miyagawa, Yumiko, Nemoto, Yasunobu, Asao, Masayuki, Yoshikawa   +5 more
openaire   +2 more sources

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
openaire   +1 more source

VENTILATION BY FLOATING LEAVES IN NUPHAR

American Journal of Botany, 1982
The network of internal gas spaces in the yellow waterlily constitutes a pressurized flow‐through system which forces oxygen to the rhizome buried in anaerobic sediment. This ventilation has been documented previously in a subspecies of Nuphar luteum with aerial leaves, and appeared to occur ...
J. W. H. Dacey, M. J. Klug
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Stereoselective synthesis of Nuphar quinolizidine alkaloid, (−)-deoxynupharidine

Tetrahedron Letters, 2005
A stereoselective synthetic route to Nuphar quinolizidine alkaloid, (−)-deoxynupharidine, was established by employing reductive carbon–nitrogen bond cleavage, followed by simultaneous recyclization of a proline derivative with samarium diiodide, and an intramolecular ring-closing metathesis, as the key steps.
Miho Katoh, Hirotake Mizutani, Toshio Honda   +2 more
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?????????????????????????????? ???? ???????????????????? ?????????????????????? Nymphaea alba, Nuphar lutea ???? Nuphar pumila ?? ???????????????????? ?? ???????????????????? ???????????? ?????????????????????? ???????? ????. ????????. ??. ??. ????????????

2019
?? ???????????? ???????????????????? ?? ???????????????????? ?????????? ?????????????????????? ???????? ????. ????????. ??. ??. ???????????? ?????????????????????? ?????????????????????????????? ?????????????????????? ???????????? Nymphaea alba L., Nuphar lutea (L.) Sm. ???? N. pumila (Timm) DC. ?????????????????? ?????????????????????? ?? ????????????
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Polymorphisme du Nuphar luteum

Bulletin mensuel - Société botanique de Lyon, 1893
Magnin Antoine. Polymorphisme du Nuphar luteum. In: Bulletin mensuel - Société botanique de Lyon, tome 11, bulletin 1, 1893. p. 17.
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Nuphar

2023
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