| abstract |
The present invention provides a compound of the formula N wherein: X is CH2, oxygen or sulfur; R1, R2 and R3 are the same or different and mean hydrogens, halogens, alkyl, alkyloxy, hydroxy, nitro, alkylcarbonylamino, alkylamino or dialkylamino, wherein N is in the individual form of (R) - or (S) -enantiomer or a mixture of (R) - and (S) -enantiomers. The present invention also provides a compound of formula MA. The present invention also provides processes for preparing the above compounds, and processes that imply their use. The compounds are particularly useful as intermediates in the synthesis of peripherally selective dopamine-β-hydroxylase inhibitors. |