Rauwolfia obscura

The isolation of methyl reserpate (121) from Rauwolfia vomitoria Afz. (42) and R. obscura K. Schum. (88) and of methyl deserpidate (122) from Rauwolfia obscura K.Schum. (89) has been reported by Court and coworkers. It should be mentioned that these compounds may not be primary products but only artifacts formed by hydrolysis of reserpine (109) and deserpidine (110), respectively. 

Pleiocarpamine has been found in the bark of Alstonia vitiensis (Seeman) var. novo ebudica monachino, and 10-methoxygeissoschizol, a-yohimbine, and alstonine in the leaves and stems of Rauwolfia obscura the stems also contain tetrahydroal-stonine and an anhydronium base which, unfortunately, decomposed in the mass spectrometer and was obtained in insufficient amount for structure elucidation. 

Sarpagine-Ajmaline-Picraline Group. Ajmaline and pelirine are among the constituents of the roots of Rauwolfia cambodiana,60 and ajmaline, 12-methoxy-ajmaline, vomalidine, norajmaline, rauvomitine, tetraphyllicine, and ajmaline 17-O-trimethoxybenzoate occur in the roots of R. obscura.61 Vincamajine has been... 

---