Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Nuphar luteum

Macrophytes Water lily, Nuphar luteum Whole Pondweed, Potamogeton richardsoni 0.5-1.8 DW 54... [Pg.45]

The Polish group28 have also isolated three new sulphoxides from Nuphar luteum. One alkaloid was a thiobinupharidine sulphoxide (37) and was converted into the parent base by reaction with phosphorus trichloride. The other sulphoxides (38), of which only one was isolated in the pure state, were epimeric reduction... [Pg.74]

More new alkaloids of the thiobinupharidine group have been obtained from Nuphar luteum. In thiobinupharidine (27) there are equatorial methyl groups at C-1 and at... [Pg.75]

Nupharolidine (25), a new sesquiterpene alkaloid, has been isolated from Nuphar luteum and characterised mainly by spectral means. The Dendrobium species (Orchidaceae) is known to be rich in sesquiterpene alkaloids. A taxonomic survey of Australian Orchidaceae which includes a discussion of Dendrobium has appeared. ... [Pg.53]

Fig. 4.21. Some representatives of the rooting water vegetation with floating leaves. 1 — Nymphaea alba (white water-lily), 2 — Nuphar luteum (yellow water-lily),... [Pg.411]

Two new alkaloids, ethoxythiobinupharidine (35d) and diethoxythiobinuphari-dine (35e), have been isolated recently from Nuphar luteum. Another alkaloid, thionupharodioline, which has been assigned structure (35c), is presumably identical with 6,6 -dihydroxythiobinupharidine. [Pg.66]

A spectrophotometric method for the quantitative determination of nobilonine (60 R = H) in extracts from Verbascum nobile has been devised.An extract from Nuphar luteum has been shown to possess antimitotic activity similar to that observed with colchicine,... [Pg.66]

In addition to -lactam antibiotics and epidithiodioxopiperazines, investigations of several other sulphur-containing natural products have been reported. The three-dimensional structure of thiobinupharidine (177) has been proposed on the basis of chemical and spectroscopic evidence. A new alkaloid, isolated from Nuphar luteum, was shown to be the closely related neothiobinupharidine sulphoxide (178). Four new plant-growth... [Pg.217]

See other pages where Nuphar luteum is mentioned: [Pg.125]    [Pg.45]    [Pg.291]    [Pg.486]    [Pg.489]    [Pg.441]    [Pg.47]    [Pg.48]    [Pg.501]    [Pg.504]    [Pg.545]    [Pg.94]    [Pg.1065]    [Pg.409]    [Pg.409]    [Pg.317]    [Pg.207]    [Pg.209]   
See also in sourсe #XX -- [ Pg.10 ]

See also in sourсe #XX -- [ Pg.10 ]

See also in sourсe #XX -- [ Pg.441 ]

See also in sourсe #XX -- [ Pg.54 ]

See also in sourсe #XX -- [ Pg.409 , Pg.411 ]

See also in sourсe #XX -- [ Pg.670 ]

See also in sourсe #XX -- [ Pg.207 , Pg.209 ]



SEARCH



Nuphar

© 2024 chempedia.info