Methods of making onapristone intermediates

US10308676B2 · kind B2 · utility

Assignee

• CONTEXT BIOPHARMA, INC. · US

Inventors

• Ulf Tilstam · Berlin, DE
• Stefan Proniuk · Austin, US
• Holger Bindernagel · Gelnhausen, DE
• Silvia Werner · Alzenau, DE
• Holger Rauter · Flieden, DE

Key dates

• Filing date: Sep 23, 2016
• Grant date: Jun 4, 2019
• Expiry date: Sep 23, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07J41/0083
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Methods and systems for making intermediates in the synthesis of onapristone are provided. Aspects include the photoconversion of onapristone synthesis intermediates using a narrow band frequency light source.