Crystal form, preparation method and intermediate of dihydropyrido ring compound

US10253030B2 · kind B2 · utility

Assignee

• QILU PHARMACEUTICAL CO., LTD. · CN

Inventors

• Haiying He · Shanghai, CN
• Kai ZHOU · Shanghai, CN
• Xiaolin Li · San Diego, US
• Xiaofei Wang · Shanghai, CN
• Dakun Qin · Shanghai, CN
• Xingxing Wang · Zhejiang, CN
• Feifei Yang · Beijing, CN
• Zheng Wang · 安丰镇, CN
• Zongbin Li · Lianyungang, CN

Key dates

• Filing date: Nov 2, 2016
• Grant date: Apr 9, 2019
• Expiry date: Nov 2, 2036

Classification

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

Abstract

Disclosed in the present disclosure are a crystal form of a dihydropyrido ring compound, and preparation method and intermediate thereof.