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Kopsia arborea

Kopsia arborea furnished several alkaloids belonging to the rare methyl chanofruticosinate group of compounds of which two (240 and 241) were new [163]. The parent compound methyl chanofruticosinate (237) was first obtained from fruticosine by Guggisberg et al [147]. It was isolated as a natural product relatively recently from the Chinese species, Kopsia... [Pg.369]

Methyl ll,12-methylenedioxy-A demethoxycarbonyl-chanofruticosinate Kopsia arborea L 247 191... [Pg.20]

Methyl 11,12-methylenedioxy-iV-demethoxycarbonyl-14,15-didehydrochanofruticosinate Kopsia arborea L 248 191... [Pg.20]

Kopsia aUnflora Boerl. (= Kopsia Jlavida Blume) Kopsia arborea Blume... [Pg.19]

Five alkaloids, 244-248, have been isolated that contain a new ring system resulting from the fission of the 16,17-bond in fruticosine. The structure of methyl 11,12-methylenedioxy-chanofruticosinate (Alkaloid C, 246), a constituent of the leaves of Kopsia officinalis (190) and K. arborea Bl. (191), was established by X-ray crystallographic analysis (190). Alkaloids A and B lack the methylenedioxy group, and it was deduced, on the basis... [Pg.55]

See other pages where Kopsia arborea is mentioned: [Pg.87]    [Pg.160]    [Pg.381]    [Pg.160]    [Pg.293]    [Pg.294]    [Pg.401]    [Pg.20]    [Pg.20]    [Pg.56]    [Pg.177]    [Pg.99]    [Pg.87]    [Pg.160]    [Pg.381]    [Pg.160]    [Pg.293]    [Pg.294]    [Pg.401]    [Pg.20]    [Pg.20]    [Pg.56]    [Pg.177]    [Pg.99]   
See also in sourсe #XX -- [ Pg.315 ]

See also in sourсe #XX -- [ Pg.19 ]

See also in sourсe #XX -- [ Pg.298 ]



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