Preparation and use of salts of the pure enantiomers of alpha-lipoic acid

US5281722A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Gottfried Blaschke · Munster, DE
• Ursula Scheidemantel · Münster, DE
• Horst Bethge · Hanau, DE
• Roland Moller · Herbrechtingen, DE
• Thomas Beisswenger · Radebeul, DE
• Klaus Huthmacher · Gelnhausen, DE

Key dates

• Filing date: Nov 12, 1992
• Grant date: Jan 25, 1994
• Expiry date: Nov 12, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D339/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The pure enantiomers of alpha-lipoic acid are obtained by formation of the diastereomeric salt pairs with the optical antipodes of alpha-methylbenzylamine in solution.