The invention relates to compounds of formula: ##STR00001## as well as the possible salts thereof with mineral or organic acids, and the solvates and/or hydrates thereof, which have affinity for and selectivity towards the V.sub.1b receptors or towards both the V.sub.1b and V.sub.1a receptors of arginine-vasopressin.The invention also relates to the process for preparing them, to the intermediate compounds of formula (II) that are useful for preparing them, to pharmaceutical compositions containing them and to their use for the preparation of medicinal products.