Method for the production of praziquantel and precursors thereof
申请人:Merck Patent GmbH
公开号:US10273213B2
公开(公告)日:2019-04-30
The present invention provides methods of preparing Praziquantel, in particular (R)-Praziquantel and analogues thereof in a stereoselective manner. One method involves asymmetric hydrogenation of the following intermediate compound
and subsequent cyclization.
[EN] METHOD FOR THE PRODUCTION OF PRAZIQUANTEL AND PRECURSORS THEREOF<br/>[FR] PROCÉDÉ DE PRODUCTION DE PRAZIQUANTEL ET DE SES PRÉCURSEURS
申请人:MERCK PATENT GMBH
公开号:WO2017036577A8
公开(公告)日:2018-03-29
Enhancing the usefulness of cross dehydrogenative coupling reactions with a removable protecting group
作者:Althea S.-K. Tsang、Katrin Ingram、Jennifer Keiser、D. Brynn Hibbert、Matthew H. Todd
DOI:10.1039/c3ob40503f
日期:——
A removable protecting group has been identified that allows the products of widely-used cross dehydrogenative couplings to be synthetically elaborated. The method can be used with enantiopure amines with no loss of enantiomeric excess. The methodology is exemplified by a new synthesis of enantiopure praziquantel, the drug used in the treatment of millions of people suffering from the neglected tropical disease, schistosomiasis.