[EN] PROCESS FOR PREPARATION OF ATROPINE<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ATROPINE
申请人:ROUVER INVEST S À R L
公开号:WO2016016692A1
公开(公告)日:2016-02-04
A process for the production of atropine is provided. The process provides for a new, efficient and commercially feasible synthetic process for the preparation of atropine and atropine salts. In one aspect, a one pot process for the synthesis of atropine is provided. The process provides excellent yield and can be used to prepare commercial 5 scale batches of atropine or atropine salts. The process avoids the additional steps of having to isolate intermediates to complete the process and has the advantage of proceeding efficiently at ambient temperature for many of the steps. The process includes providing acetyltropoyl chloride and reacting the acetyltropoyl chloride with tropine followed by a contact with an acid to form atropine.
Several new 8-phosphabicyclo[3.2.1]oct-6-enes and -6-en-3-yl acetates were prepared by the alkyl (or aryl)dihalophosphane addition to cyclohepta -1,3-diene and 1-acetoxy cyclohepta-3,5-diene. The P-configuration in two P-epimer pairs (3, 4 and 5, 6) and three other compounds which were each obtained as a single isomer (1, 2 and 7) was determined by investigation of the NMR spectra, i.e. by complexation
Total Synthesis of (±)-Scopolamine: Challenges of the Tropane Ring
作者:Pierre-Antoine Nocquet、Till Opatz
DOI:10.1002/ejoc.201501430
日期:2016.2
Scopolamine was synthesized using 6,7-dehydrotropine as a key intermediate. Rhodium-catalyzed [4 + 3] cycloaddition chemistry and a modified Robinson–Schopf reaction were each independently evaluated for their utility in constructing the tropane core. Both synthetic approaches gave comparable overall yields.
METHOD FOR INTRODUCING DEUTERATED LOWER ALKYL INTO AMINE MOIETY OF COMPOUND CONTAINING SECONDARY AMINE
申请人:OTSUKA PHARMACEUTICAL CO., LTD.
公开号:US20220127206A1
公开(公告)日:2022-04-28
The present invention relates to a method of mono-deuterated-lower-alkylating the amine part in a compound having an amine protected with an aralkyl, which comprises introducing mono-deuterated lower-alkyl into the amine with a deuterated-lower-alkylating agent under neutral or basic condition, and then deprotecting the aralkyl group.