Abstract: A new glucoindolealkaloid, sickingine, together with the known alkaloids, 5α-carboxystrictosidine, ophiorine A, ophiorine B and lyalosidic acid, have been isolated from the barks of Sickingia tinctoria and S. williamsii. The new structure was derived from physical and spectroscopic data. An extensive NMR spectroscopic study led to the revision of the assignments for certain carbon atoms of ophiorines A and B given in the literature.
Glucoindole alkaloids from bark of two Sickingia species
AQUINO, Rita Patrizia;DE TOMMASI, Nunziatina;PIZZA, Cosimo
1994-01-01
Abstract
Abstract: A new glucoindolealkaloid, sickingine, together with the known alkaloids, 5α-carboxystrictosidine, ophiorine A, ophiorine B and lyalosidic acid, have been isolated from the barks of Sickingia tinctoria and S. williamsii. The new structure was derived from physical and spectroscopic data. An extensive NMR spectroscopic study led to the revision of the assignments for certain carbon atoms of ophiorines A and B given in the literature.File in questo prodotto:
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