Compounds of formula I, <IMAGE> I wherein R1 is alkyl of 1 to 4 carbon atoms, R2 is hydrogen, alkyl of 1 to 4 carbon atoms or benzyl, R3 and R5 are, independently, hydrogen or methyl, R4 is hydrogen or alkyl of 1 to 4 carbon atoms, and R6 and R7 together form a single bond, or R6 and R7 are each hydrogen, R6 is methoxy, and R7 is hydrogen, ARE USEFUL IN THE TREATMENT OF HYPERTENSION, ANGINA PECTORIS, DEPRESSIONS, NEUROSES AND PSYCHOSES.
Ergot peptide alkaloid derivatives