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Pseudoindoxyl

Iboga alkaloids devoid of the 19-hydroxy group are significantly more stable toward oxidation than are the corresponding hydroxy bases. Abstraction of the hydroxy proton of 7-hydroxyindolenines by bases leads to concomitant carbon migration and formation of pseudoindoxyls. In some cases the rearrangement is better accomplished by warm HC1. The interrelationship among indoles, 7-hydroxyindolenines, and pseudoindoxyls has been exhaustively treated by Cordell (see Ref. 6). [Pg.97]

Akuammigine pseudoindoxyl (77) 19-Epiajmalicine (77) 19-Epi-3-isoajmalicine (77) 14j8-Hydroxy-3-isorauniticine (7) 3-lsoajmalicine (77)... [Pg.24]

Rauniticine oxindole A (77) Rauniticine pseudoindoxyl (77) Tetrahydroalstonine (77) Tetrahydroalstonine A/-oxide (77) Uncarine A (77)... [Pg.24]

Many of the alkaloids suffer facile autoxidation to yield hydroperoxy-and hydroxyindolenines, whose further degradation products are 4-hydroxyquinolines and pseudoindoxyls (Table I). Therefore, the... [Pg.203]

See other pages where Pseudoindoxyl is mentioned: [Pg.168]    [Pg.169]    [Pg.21]    [Pg.22]    [Pg.22]    [Pg.22]    [Pg.22]    [Pg.22]    [Pg.27]    [Pg.30]    [Pg.30]    [Pg.31]    [Pg.32]    [Pg.32]    [Pg.33]    [Pg.34]    [Pg.34]    [Pg.34]    [Pg.35]    [Pg.35]    [Pg.39]    [Pg.40]    [Pg.41]    [Pg.46]    [Pg.49]    [Pg.50]    [Pg.51]    [Pg.44]    [Pg.184]    [Pg.24]    [Pg.27]    [Pg.184]    [Pg.226]    [Pg.209]    [Pg.213]    [Pg.241]   
See also in sourсe #XX -- [ Pg.27 ]



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Pseudoindoxyls

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