S-5-SUBSTITUENT-N-2'-(THIOPHENE-2-YL)ETHYL-TETRALIN-2-AMINE OR CHIRAL ACID SALTS THEREOF AND USE FOR PREPARING ROTIGOTINE
申请人:He Xungui
公开号:US20130046100A1
公开(公告)日:2013-02-21
The chiral compound S-5-substituted-N-2′-(thienyl-2-yl-)ethyl-tetralin-2-amine or its chiral acid salts and preparation method thereof are disclosed, and the method for preparing Rotigotine by using the chiral compound is also disclosed. Racemic 5-substituted-N-2′-(thien-2-yl-)ethyl-tetralin-2-amine (compound 1) is resolved by using a conventional chiral acid to obtain an optically pure chiral acid salt of S-5-substituted-N-2′-(thien-2-yl-)ethyl-tetralin-2-amine, which is then dissociated to obtain S-5-substituted-N-2′-(thien-2-yl-)ethyl-tetralin-2-amine (compound 2). The compound 2 or chiral acid salt thereof is alkylated and deprotected to produce rotigotine (compound 5).
Novel Process for Preparation of Rotigotine and Intermediates Thereof
申请人:Solara Active Pharma Sciences Limited
公开号:US20190248758A1
公开(公告)日:2019-08-15
The present invention relates to a novel process for the preparation of Rotigotine of formula (I) and intermediates thereof.
本发明涉及一种用于制备化学式(I)的罗蒂高定(Rotigotine)及其中间体的新工艺。
PROCESSES FOR PREPARING HIGHLY PURE ROTIGOTINE OR A PHARMACEUTICALLY ACCEPTABLE SALT THEREOF
申请人:Khunt Mayur Devjibhai
公开号:US20110313176A1
公开(公告)日:2011-12-22
Provided herein are convenient, industrially advantageous and environmentally friendly processes for the preparation of (−)-(S)-5-hydroxy-2-[N-n-propyl-N-2-(2-thienyl)ethylamino]tetralin (rotigotine) or a pharmaceutically acceptable salt thereof. Provided further herein is a highly pure rotigotine or a pharmaceutically acceptable salt thereof substantially free of impurities, processes for the preparation thereof, and pharmaceutical compositions comprising highly pure rotigotine or a pharmaceutically acceptable salt thereof substantially free of impurities.
Synthesis of Pharmaceutically Relevant 2‐Aminotetralin and 3‐Aminochroman Derivatives via Enzymatic Reductive Amination
作者:Joan Citoler、Vanessa Harawa、James R. Marshall、Han Bevinakatti、James D. Finnigan、Simon J. Charnock、Nicholas J. Turner
DOI:10.1002/anie.202110321
日期:2021.11.8
The biocatalytic synthesis of pharmaceutically relevant 2-aminotetralin and 3-aminochroman derivatives was achieved with iminereductases (IREDs) at preparative scale, showing enantiocomplementary selectivity for most of the products and yields as high as 91 %. Precursors of Ebalzotan, Robalzotan, Alnespirone and 5-OH-DPAT were successfully synthesised, as well as the Parkinson's disease agent Rotigotine
Crystalline rotigotine base and preparation process therefor
申请人:CHEMAGIS Ltd.
公开号:US08344165B2
公开(公告)日:2013-01-01
An isolated and pure crystalline rotigotine base of polymorph Form I, and processes for producing the crystalline rotigotine base are disclosed. Also disclosed is a transdermal patch for the delivery of rotigotine base using the disclosed isolated and pure form of rotigotine base, which can be used in treatment of Parkinson's Disease and other disorders ameliorated or treated by rotigotine, including restless leg syndrome.