The Alkaloids of Rauwolfia cumminsii.

Planta Medica
1978.0

Abstract

Subsequently R. liberiensis STAPF and R. ivoriensis PELLEGRIN were considered synonymous [4]. The roots, together with roots of other plants, are used in Africa in the treatment of high blood pressure conditions, piles, stomach ailments and various venereal diseases [5]. Earlier work has shown that the alkaloids of the leaves comprise E-seco indole, sarpagan and predominantly N-demethyl-dihydroindole alkaloids, together with the indoline alkaloid picrinine [6]. The stems yield similar alkaloids but, in addition, more N-methyl-dihydroindole alkaloids, together with yohimbine, heteroyohimbine and anhydronium bases [7]. The absence of dihydroindole alkaloids from the roots has been reported [8, 9] and also the low total alkaloid yield relative to other African Rauwolfia species [10]. The discovery of dihydroindole alkaloids in the aerial parts of the plant prompted a very careful re-investigation of the alkaloid mixture in the roots with the aim of explaining the alkaloid distribution within the plant.

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