This invention relates to a novel process for making dihydrotetrabenazines, and in particular (+)-α-dihydrotetrabenazine, novel synthetic intermediates for use in the process and processes for making the intermediates.
This invention relates to a novel process for making dihydrotetrabenazines, and in particular (+)-α-dihydrotetrabenazine, novel synthetic intermediates for use in the process and processes for making the intermediates.
A Ring-Closing Metathesis-Based Approach to the Synthesis of (+)-Tetrabenazine
作者:Manuel Johannes、Karl-Heinz Altmann
DOI:10.1021/ol301612q
日期:2012.7.20
A modular stereoselective synthesis of the vesicular monoamine transport inhibitors (+)-tetrabenazine ((+)-1) and (+)-alpha-dihydrotetrabenazine ((+)-2) has been developed. The approach is based on amine 4 and acid 5 as the key building blocks, which were elaborated into macrolactam 3 by amide coupling and a subsequent highly E-selective RCM reaction. Macrolactam 3 could be converted into tetrabenazine in three known steps.
A Concise Total Synthesis of (+)-Tetrabenazine and (+)-α-Dihydrotetrabenazine
AbstractHighly concise asymmetric total syntheses of (+)‐tetrabenazine (1), a drug for the treatment of chorea associated with Huntington’s disease, and of (+)‐α‐dihydrotetrabenazine (2), an active metabolite of 1, have been accomplished. Our synthetic route features a trans‐selective enol etherification, followed by an unprecedented cation‐dependent aza‐Claisen rearrangement to establish the carbon framework and two stereogenic centers of tetrabenazine. The syntheses consist of seven steps (34 % overall yield) for (+)‐2 and eight steps (22 % overall yield) for (+)‐1.
PROCESS FOR MAKING A PHARMACEUTICAL COMPOUND
申请人:Adeptio Pharmaceuticals Limited
公开号:US20230331667A1
公开(公告)日:2023-10-19
This invention relates to a novel process for making dihydrotetrabenazines, and in particular (+)-α-dihydrotetrabenazine, novel synthetic intermediates for use in the process and processes for making the intermediates.