Consequently linde derivatives, processes for their preparation, pharmaceutical compositions containing them and their use in the therapeutic treatment

摘要

A compound of formula I IMAGE wherein R is (i) alkyl(C2-8), (ii) alkenyl(C3-6) or alkinyl (C3-6) wherein the double bond is other than in the alpha , beta position, (iii) cycloalkylalkyl(C4-10) or (iv) phenylalkylalkyl(C7-10) or a pharmaceutically acceptable acid addition salt thereof is a useful anti- parkinson or vigilance increasing agent.