amine alkaloids ergonovine , dihydroergonovone and dihydromethylergonovine had no amplifying potency , but the hydrogenated amino acid alkaloids dihydroergocornine , dihydroergocristine and dihydroergokryptine ( hydergine ) were almost as potent amplifiers as was dhe .
C0014704
ergonovine
C0012289
dihydroergocristine