Process for obtaining pharmacologically active compounds from complex mixtures of substances

US5750679A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Peter Haas · Brisbane, AU
• Heinz Engelhardt · Riegelsberg, DE
• Stefan Mullner · Langenfeld, DE

Key dates

• Filing date: Aug 25, 1994
• Grant date: May 12, 1998
• Expiry date: Aug 25, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/54
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for obtaining pharmacologically active compounds from complex mixtures of substances Free organic acids, hydroxy acids, fatty alcohols, sugars and hydroxy-substituted steroids are obtained from complex mixtures of substances by mixing the material to be extracted with a polar solvent, drying the resulting mixture, subsequently silylating, esterifying or acylating, and extracting the resulting material with a supercritical fluid under a pressure of more than 200 bar.