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Tabernaemontana iboga

Coronaridine subtype alkaloids are widely spread in Tabernaemontana. The iboga skeleton is particularly susceptible to oxidation at aminomethylenes C-3 and C-5 and at benzylic C-6. Very often, the fundamental compounds are accompanied by the oxidation products at these positions. [Pg.89]

Conopharyngia (Tabernaemontana) spp., Stemmadenia spp., Tabernanthe iboga (Apocvnaceae)... [Pg.138]

Paullinia cupana (guarana) (Sapindaceae), Theobroma cacao (Sterculiaceae), Camellia sinensis (tea) (Theaceae) [leaf] Tabernaemontana pachysiphon, Tabernanthe iboga (Apocynaceae) [leaf]... [Pg.168]

Dichomine (161) is a novel type of iboga alkaloid reported in 1983 by Perera, van Beek, and Verpoorte from the leaves of Tabernaemontana dichotoma (100). It was later found to occur in the fruits of the same species (91). Dichomine, Q9H24N2O, showed an unusual UV spectrum with... [Pg.65]

Catharanthine-Ibogamine-Cleavamine Group. The chemistry and pharmacology of alkaloids of Tabernanthe iboga have been reviewed." New extractions have resulted in the isolation of coronaridine (previously observed), voacangine, isovoacangine, and ibogamine from the bark of Ervatamia coronaria, coronaridine and 19-oxocoronaridine from the roots of Tabernaemontana... [Pg.202]

Iboga alkaloids are found in other genera [e.g., Conopha-ryngia, Ervatamia, Hazunta, Melodinus, Pagiantha, Pan-daca, Tabernaemontanae, and Voacanga (Apocynaceae). [Pg.647]

See other pages where Tabernaemontana iboga is mentioned: [Pg.17]    [Pg.17]    [Pg.94]    [Pg.200]    [Pg.226]    [Pg.203]    [Pg.149]    [Pg.149]    [Pg.533]    [Pg.24]    [Pg.18]    [Pg.282]    [Pg.258]    [Pg.265]    [Pg.230]   
See also in sourсe #XX -- [ Pg.15 ]

See also in sourсe #XX -- [ Pg.17 ]



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