The present invention describes a novel process for the preparation of optically active (S)-(-)-2-(N-propylamino)-5-methoxytetraline and (S)-(-)-2-(N-propylamino)-5- hydroxytetraline compounds based on the optical resolution of mixtures of the enantiomers of 2-(N-propylamino)-5-methoxytetraline and 2-(N-propylamino)-5- hydroxytetraline respectively. This process comprises (a) reacting a mixture of the enantiomers of said compounds with an optically active organic acid to form diastereoisomeric salts and separating the salts by crystallization. Said compounds are useful in the preparation of (6S)-(-)-5,6,7,8-tetrahydro-6-[propyl-(2- thienyl)ethyl]amino-1 -naphthol (Rotigotine). Rotigotine is a dopamine agonist and is indicated for the treatment of Parkinson's disease.
该发明描述了一种新颖的工艺,用于制备光学活性的(S)-(-)-2-(N-丙基
氨基)-5-甲
氧基四
氢吲哚和(S)-(-)-2-(N-丙基
氨基)-5-羟基四
氢吲哚化合物,该工艺基于对2-(N-丙基
氨基)-5-甲
氧基四
氢吲哚和2-(N-丙基
氨基)-5-羟基四
氢吲哚两种对映体混合物的光学分辨。该工艺包括:(a)将这些化合物的对映体混合物与光学活性有机酸反应,形成异构盐,并通过结晶分离这些盐。这些化合物在(6S)-(-)-5,6,7,8-四
氢-6-[丙基-(2-
噻吩基)乙基]
氨基-1-
萘酚(洛地吉
酮)的制备中有用。洛地吉
酮是一种
多巴胺激动剂,用于治疗帕
金森病。