Invention Grant
US08455641B2 Method for producing 4,4′-(propane-1,2-diyl)-dipiperazine-2,6-dione
失效
制备4,4' - （丙烷-1,2-二基） - 二哌嗪-2,6-二酮的方法
- Patent Title: Method for producing 4,4′-(propane-1,2-diyl)-dipiperazine-2,6-dione
- Patent Title (中): 制备4,4' - （丙烷-1,2-二基） - 二哌嗪-2,6-二酮的方法
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Application No.: US12516348Application Date: 2007-11-23
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Publication No.: US08455641B2Publication Date: 2013-06-04
- Inventor: Andreas Koch , Erwin Neufellner
- Applicant: Andreas Koch , Erwin Neufellner
- Applicant Address: AT Vienna
- Assignee: Cyathus Exquirere Pharmaforschungs GmbH
- Current Assignee: Cyathus Exquirere Pharmaforschungs GmbH
- Current Assignee Address: AT Vienna
- Agency: Cozen O'Connor
- Priority: ATA1958/2006 20061124
- International Application: PCT/AT2007/000529 WO 20071123
- International Announcement: WO2008/061270 WO 20080529
- Main IPC: C07D241/04
- IPC: C07D241/04
Abstract:
A method for preparing compounds of the formula (I) by the cyclization of tetraacetic acid alkyl esters of the formula (II) in the presence of ammonia and formamide as well as to the compounds of the formula (II), which are used in this method.
Public/Granted literature
- US20100152447A1 Novel Method for Producing 4,4-(1-Methyl-1,2-Ethanediyl)-BIS-(2,6-Piperazinedione) Public/Granted day:2010-06-17
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