8ALPHA-ACYLAMINOERGOLINES,THEIR PRODUCTION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

摘要

Compounds of formula I (I) wherein R1 is hydrogen or C1-4alkyl, R2 is hydrogen, chlorine, bromine or methyl, R3 is C1-5alkyl or C3-5alkenyl and R4 is C1-7alkyl; C3-7cycloalkyl; adamantyl; or optionally substituted phenyl, are useful as neuroleptic agents and PRL secretion inhibitors.