The present invention provides a compound of formula N wherein: X is CH2, oxygen or sulphur; R1, R2 and R3 are the same or different and signify hydrogens, halogens, alkyl, alkyloxy, hydroxy, nitro, alkylcarbonylamino, alkylamino or dialkylamino group, wherein N is in the form of the individual R- and S-enantiomer or a mixture of the (R)- and (S)-enantiomer. The present invention also provides a compound of formula MA. The present invention also provides processes for preparing the above compounds, and processes involving their use. The compounds are particularly useful as intermediates in the synthesis of peripherally-selective inhibitors of dopamine-ß-hydroxylase.
本发明提供了一个公式为N的化合物,其中:X为
CH2、氧或
硫;R1、R2和R3相同或不同,表示氢、卤素、烷基、烷氧基、羟基、硝基、烷基羰基
氨基、烷基
氨基或二烷基
氨基基团,其中N以单一的R-和S-对映体形式存在,或者是(R)-和(S)-对映体的混合物。本发明还提供了一个公式为MA的化合物。本发明还提供了制备上述化合物的方法,以及涉及它们使用的方法。这些化合物在外周选择性
多巴胺-ß-羟化酶
抑制剂的合成中特别有用。