Tasre | 
Alkaloids of Rivea corymbosa and Ipomoea violacea seeds. 
Thin layer Rivea corymbosa [pomoea 
chromatogram (ololiuhqui, violacea 
(Plate XXXVI, right) badoh) (badoh negro) 
A d-Lysergic acid amide 0.0065 % 0.0385 % 
(ergine) 
B d-Isolysergic acid amide 0.0020 % 0.005 % 
(isoergine) 
c Chanoclavine 0.0005 % 0.005 % 
\ Elymoclavine 0.0005 Yo 0.005 % 
D Lysergol 0.0005 % — 
Ergometrine — 0.005 % 
Total alkaloid content 0.012 % 0.06 % 
(colorimetrically determined 
calculated on a mol, weight 
of 300) 
lysergic acid and recently as a genuine alkaloid from the 
ergot of Paspalum grass.’” The alkaloid corresponding to 
spot B in the chromatogram was found to be identical 
with d-isolysergic acid amide (isoergine) (formula IV) 
which, asin the case of ergine, was already known as the 
hydrolysis product of ergot alkaloids" and as a natural 
alkaloid. The third alkaloid, chanoclavine (formula V), 
which forms spot C in the chromatogram, had been dis- 
covered by us in ergot of the tropical millet cob Pennise- 
tum typhoideum." Klymoclavine (formula VI), contained 
in spot I), was first isolated from the ergot of the wild 
grass Elymus mollis.” 
Krgometrine (formula II), the alkaloid which is mainly 
responsible for the uterotonic hemostatic action of the 
ergot drug, could only recently be identified as one of the 
active principles of Ipomoea violacea.” Together with 
elymoclavine, it forms spot D in the thin layer chromato- 
gram (Plate NXXNNV1), right. The seeds of Rivea corym- 
bosa either do not contain this compound or else only 
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