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Nb-Demethylalstophylline oxindole

Two new oxindoles, ATb-demethytalstophyllal oxindole (99) and alstonal (100), together with three known oxindoles Nb-demethylalstophylline oxindole (101), alstonisine (102), and talcarpine were isolated from Alstonia macrophylla occurring in Sabah, Malaysian Borneo [87]. Compound 99 is an isomer of the known 101. The NMR spectral data were similar to those of 101 except for the appearance of an aldehyde function and a vinylic methyl group in place of an... [Pg.342]

See other pages where Nb-Demethylalstophylline oxindole is mentioned: [Pg.64]    [Pg.64]    [Pg.65]    [Pg.64]    [Pg.64]    [Pg.65]   
See also in sourсe #XX -- [ Pg.9 , Pg.196 , Pg.197 ]



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