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A total of 28 indole and dihydroindole alkaloids have so far been isolated from the bark or leaves of Vallesia dichotoma RUIZ et PAV. All but seven of these alkaloids have been characterized largely through the combined use of UV.‐, IR.‐ and NMR.‐spectroscopy as well as mass spectrometry. Their structures are listed together with other data in a table.
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Walser et al. (1965) studied this question.
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