Patent · US Active

Production method

US8119797B2 · kind B2 · utility

0Cited by

0References

2Claims

0Family size

Assignee

Boehringer Ingelheim International GmbH · DE

Inventors

Guenther Huchler · Biberach an der Riß, DE
Werner Rall · Mittelbiberach, DE
Uwe Reis · Biberach, DE

Key dates

Filing date	Aug 8, 2011
Grant date	Feb 21, 2012
Priority date	—
Expiry date	Aug 8, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D401/14
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for preparing compounds of general formula Iwherein R1 and R2 are defined as in claim 1, the pharmaceutically acceptable salts and the solvates thereof, which may be prepared starting from compounds of general formula IIwherein R1 is defined as in claim 1.

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