IP Library › Granted Patent US 8,541,450
Granted Patent B2
US 8,541,450 · App. 12/413,851 · Granted Sep 24, 2013

Process for the preparation of chiral 8-(3-aminopiperidin-1yl)-xanthines

Inventors: Waldemar Pfrengle (Biberach, DE); Thorsten Pachur (Schwendi, DE)
Assignee: Boehringer Ingelheim International GmbH
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Quick Facts
Patent No.
US 8,541,450
App. No.
12/413,851
Granted
Sep 24, 2013
Kind
B2
Abstract

The invention relates to enantiomerically pure 3-(phthalimido)piperidines and processes for preparing enantiomerically pure 3-(phthalimido)piperidines.

Claims (2)

1. (R)-3-(Phthalimido)piperidine D-tartrate.

2. (S)-3-(Phthalimido)piperidine L-tartrate.

Priority Claims (1)
DE 10 2004 05 4054 · Nov 5, 2004 · national
Continuity (2)
Division 11267235 · Nov 4, 2005
Related Publication 20090192314A1 · Jul 30, 2009