A series of new (5R,8S,10R)-ergoline derivatives was synthesized, and their antihypertensive and dopaminergicactivities were evaluated in conscious spontaneously hypertensive rats and in rats with unilateral 6-hydroxydopamine-induced lesions of the substantia nigra, respectively. (5R,8S,10R)-6-Methyl-8- ergolinemethanols, prepared from the corresponding ergolinecarboxylates, were converted to the