Patent · US Active

Preparation method for benzoxazoleoxazine ketone compound and intermediate and crystal form thereof

US10106557B2 · kind B2 · utility

0Cited by

1References

8Claims

0Family size

Assignee

NORTH CHINA PHARMACEUTICAL NEW DRUG R&D CO., LTD. · CN

Inventors

Shuhui CHEN · Shanghai, CN
Zhaozhong Ding · Shanghai, CN
Gangli Gong · Elmhurst, US
Xiaobing Yan · Baoding, CN
Wei Huang · Foster City, US
Feng Guo · 安丰镇, CN
Baoling Duan · Shijiazhuang, CN
Renlong Gao · Shijiazhuang, CN
Pingfan Zhou · Shijiazhuang, CN
Xinhua Lu · Shanghai, CN
Guimin Dong · Shijiazhuang, CN

Key dates

Filing date	Sep 23, 2015
Grant date	Oct 23, 2018
Priority date	—
Expiry date	Sep 23, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/55
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A preparation method for a high-purity benzoxazoleoxazine ketone compound, a crystal form thereof, and an intermediate compound for preparing a compound of formula (I), and a preparation method therefor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.