New Process for the Production of Tiotropium Salts
申请人:Brandenburg Joerg
公开号:US20070027320A1
公开(公告)日:2007-02-01
The invention relates to a new process for preparing tiotropium salts of general formula 1
wherein X
−
may have the meanings given in the claims and in the specification.
METHOD FOR PRODUCING AMMONIUM HEXAFLUOROPHOSPHATES
申请人:Brandenburg Joerg
公开号:US20100063289A1
公开(公告)日:2010-03-11
The invention relates to a method for producing ammonium hexafluorophosphates of general formula (1) wherein R
1
, R
2
, R
3
and R
4
are defined as in the claims and in the description, said novel ammonium hexafluorophosphates and to the use thereof for producing pharmaceutically active compounds.
NEW PROCESS FOR THE PRODUCTION OF TIOTROPIUM SALTS
申请人:Boehringer Ingelheim Pharma GmbH & Co. KG
公开号:US20130116435A1
公开(公告)日:2013-05-09
The invention relates to a new process for preparing tiotropium salts of general formula 1
wherein X
−
may have the meanings given in the claims and in the specification.
This invention relates to solvates of tiotropium bromide having a purity of at least 99%, process for preparing such pure solvates, and their use in pharmaceutical formulations. This invention also provides tiotropium bromide solvates containing less than about 0.15% area by HPLC of 2,2-dithienyl glycolic acid.