Crystalline forms of {[5-(3-chlorophenyl)-3-hydroxypyridine-2-carbonyl] amino} acetic acid and processes for preparation thereof

US10703724B2 · kind B2 · utility

Assignee

• CRYSTAL PHARMACEUTICAL (SUZHOU) CO., LTD. · CN

Inventors

• Minhua Chen · 安丰镇, CN
• Yanfeng Zhang · Suzhou, CN
• Po Zou · Suzhou, CN
• Jinqiu Wang · Suzhou, CN
• Xiaoyu Zhang · Suzhou, CN

Key dates

• Filing date: Dec 13, 2017
• Grant date: Jul 7, 2020
• Expiry date: Dec 13, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07B2200/13
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The present disclosure relates to novel crystalline forms of {[5-(3-chlorophenyl)-3-hydroxypyridine-2-carbonyl] amino} acetic acid and processes for preparation and uses thereof. Crystalline form CS1, form CS2 and form CS8 of the present disclosure can be used for preparing drugs treating anemia, which providing new choices for preparing drugs of {[5-(3-chlorophenyl)-3-hydroxypyridine-2-carbonyl] amino} acetic acid, and having very important value for drug development.