a unique series of 4 -- 2 - thiazolamines and 4 -- 2 - thiazolamines are disclosed . these compounds are useful as dopaminergic agents . intermediates for preparing the compounds , pharmaceutical compositions containing them , and methods for using the pharmaceutical compositions for treating human psychosis , elevated blood pressure , parkinson &# 39 ; s disease , hyperprolactinaemia , sexual disorders , and acromegaly are described .