Compounds of formula I ##STR1## wherein R.sub.1 is hydrogen or C.sub.1-4 alkyl, R.sub.2 is hydrogen, chlorine, bromine or methyl, R.sub.3 is C.sub.1-5 alkyl or C.sub.3-5 alkenyl and R.sub.4 is C.sub.3-7 alkyl; C.sub.3-7 cycloalkyl; adamantyl; or optionally substituted phenyl, having valuable pharmaceutical, and in particular LH- and PRL-secretion inhibiting as well as neuroleptic activity.
分子式为I的化合物,其中R1为氢或C1-4烷基,R2为氢、
氯、
溴或甲基,R3为C1-5烷基或C3-5烯基,R4为C3-7烷基;C3-7环烷基;
金刚烷基;或者可选择取代的苯基,具有有价值的药物学特性,特别是LH和PRL分泌抑制以及神经类药物活性。