Peraksine (Va) an alkaloid from Rauwolfia perakensis is shown to be a representative of a new type of hexacyclic indole alkaloid related to perakine. Its structure was established from the analysis of the X-ray diffraction data obtained from the methiodide and by the chemical and mass spectral evidence. RP-7 is shown by partial synthesis from tetraphyllicine to be 1-demethyl-21-deoxy-ajmaline-1,19-diene-17-O-acetate (XVI). © 1964.