Patent ID: 8426611
Filing Date: 2013-04-23
Classification: A61K,A61P,C07D,Y02A

Abstract:
1. A stereochemically pure compound with a stereochemical purity of at least 80% selected from the group consisting of: (1s, 2R)-2-((R)-2′-cyclopentyl-2′-hydroxy-2′-phenylacetoxy)-7,7-dimethyl-7-azoniabicyclo[2.2.1]heptane bromide; (1R, 2S)-2-((R)-2′-cyclopentyl-2′-hydroxy-2′-phenylacetoxy)-7,7-dimethyl-7-azoniabicyclo[2.2.1]heptane bromide; and (1R, 2R)-2-((R)-2′-cyclopentyl-2′-hydroxy-2′-phenylacetoxy)-7,7-dimethyl-7-azoniabicyclo[2.2.1]heptane bromide.