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