http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-102011326-B1

Outgoing Links

Predicate Object
classificationCPCInventive http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61P11-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D451-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D451-14
classificationIPCInventive http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D413-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D451-10
filingDate 2013-02-08^^<http://www.w3.org/2001/XMLSchema#date>
grantDate 2019-08-16^^<http://www.w3.org/2001/XMLSchema#date>
publicationDate 2019-08-16^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber KR-102011326-B1
titleOfInvention Process for preparing tiotropium bromide
abstract The present invention relates to a novel process for preparing tiotropium bromide and provides a process for preparing tiotropium bromide, comprising the following steps: (i) scopine oxalate is reacted in diethylamine with an inert solvent Forming a pin; (ii) reacting scopin with methyl di- (2-thienyl) glycolate (MDTG) in an inert solvent in the presence of an inorganic base to form N-demethylthiotropium; (iii) reacting N-demethylthiotropium with bromomethane in an inert solvent to form tiotropium bromide; (iv) crystallizing tiotropium bromide in a mixture of methanol and acetone, and optionally optionally (v) micronizing the formed tiotropium bromide.
priorityDate 2012-02-10^^<http://www.w3.org/2001/XMLSchema#date>
type http://data.epo.org/linked-data/def/patent/Publication

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