Patent · US Active

Method for preparing tiotropium salts

US7491824B2 · kind B2 · utility

3Cited by

1References

6Claims

0Family size

Assignee

BOEHRINGER INGELHEIM PHARMA GMBH & CO. KG · DE

Inventors

Ralf Lock · Mainz, DE
Werner Belzer · Sankt Goar, DE
Rainer Hamm · Ingelheim am Rhein, DE
Monika Hofmann · Mainz, DE

Key dates

Filing date	Aug 23, 2005
Grant date	Feb 17, 2009
Priority date	—
Expiry date	Dec 14, 2026

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07F7/1804
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to a new process for preparing tiotropium salts of general formula 1wherein X− may have the meanings given in the claims and in the specification.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.