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Ormosia Group

Ormosia Group.—Alkaloids of this type have been isolated for the first time from Hovea species. H. linearis contains ( )-piptanthine and ( )-16-epiormosanine, [Pg.74]

Reagents i, NH2NH2-KOH- triethylene glycol, 190 °C ii, Pt, H2, AcOH iii, B2H6, THF. [Pg.75]

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]

and La Londe and Wong have now separated l-epi-l -epi-thiobinupharidine (28) containing two axial methyl groups and a mixture of isomers (29) and (30) with axial methyl substitutents at C-1 and at C-1, respectively. Configurations at C-1 were apparent from the and C n.m.r. spectra, the axial methyl groups in (28), for [Pg.76]

The unresolved mixture of 6-hydroxy- and 6 -hydroxy-neothiobinupharidine [cf. (32) and Vol. 6] has since been separated. The structures of the isomers were elucidated in the usual way by a study of the n.m.r. and mass spectra of the alkaloids and their monodeuterio-derivatives. Distinction between an a - (i.e., C-6) and a /8-(i.e., C-6 ) thiohemiaminal can also be made on the basis of the u.v. spectrum in acid solution and from c.d. data.  [Pg.76]


Lamberton, J. A., Morton, T. C. and Suares, H. 1982. Alkaloids of Hovea linearis R.Br. The isolation of Ormosia group alkaloids. Australian Journal of Chemistry, 35 2577. [Pg.253]

Ormosia Group.—An alkaloid obtained from Podopetalum ormondii was shown to have structure (18) by X-ray analysis and is thus epimeric with podopetaline at C-6 12 the same structure was assigned to amazonine, isolated from Ormosia amazonia, but it has not yet been possible to establish the identity of the two alkaloids. [Pg.70]

A number of unusual quinolizidine alkaloids have been isolated from various leguminous plants now classified in the Fabaceae, such as lamprolobine (59) from Lamprolobium fruticosum 182], and podopetaline (60), a new member of the Ormosia group of alkaloids that was isolated from Podopetalum ormondii [831. Other genera, including Templetonia and Hovea, have been found to produce well-known leguminous alkaloids such... [Pg.100]

The Lupinine-Cytisine-Sparteine-Matrine-Ormosia Group... [Pg.87]

Table 1 Isolation of alkaloids of the lupinine-cytisine-sparteine-matrine-Ormosia group... Table 1 Isolation of alkaloids of the lupinine-cytisine-sparteine-matrine-Ormosia group...
The Lupinine-Lupanine-Sparteine-Matrine Group and the Ormosia Alkaloids... [Pg.66]

Jamine is most unusual in that it occurs as a racemate in Ormosia jamaicensis. Recently, jamine isolated from Ormosia costulata was found crystallized in a noncentrosymmetric space group, Pll2l2l, where it necessarily must be optically active. The structure determination (19) yielded a molecule identical to that found in the earlier publication (18). [Pg.59]

For one group of alkaloids, the quinolizidine alkaloids, these experiments have already been performed (2,184,484,503,527). As mentioned before, QAs constitute the main secondary products of many members of the Leguminosae, especially in the genera Lapinas, Genista, Cytisus, Bapti-sia, Thermopsis, Sophora, Ormosia, and others (503). [Pg.92]

Russian studies of the stereochemistry of alkaloids of the matrine group by X-ray analysis have been extended to cis-matrine (20), sophoridine N-oxide (21), " and lehmannine N-oxide (22). The stereochemical complexity of some Ormosia alkaloids was discussed last year (c. Vol. 12, p.76-77). Now the alkaloid sweetinine, first obtained from Sweetia panamensis, has been isolated from S. [Pg.92]


See other pages where Ormosia Group is mentioned: [Pg.287]    [Pg.74]    [Pg.287]    [Pg.74]    [Pg.88]    [Pg.100]    [Pg.271]    [Pg.85]    [Pg.101]    [Pg.129]    [Pg.141]    [Pg.181]   


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