CN Patent

CN116178251A — 一种依度沙班中间体的制备方法

Assigned to Shanghai Huilun Jiangsu Pharmaceutical Co ltd · Expires 2023-05-30 · 3y expired

What this patent protects

本发明提供一种依度沙班中间体的制备方法，所述方法为在有机碱存在下，使化合物式I与化合物式II或其盐进行反应制备得到，在所述反应步骤中单独加入草酸，能够显著提高反应的产率并降低产物中的杂质含量。

USPTO Abstract

本发明提供一种依度沙班中间体的制备方法，所述方法为在有机碱存在下，使化合物式I与化合物式II或其盐进行反应制备得到，在所述反应步骤中单独加入草酸，能够显著提高反应的产率并降低产物中的杂质含量。

Drugs covered by this patent

Patent Metadata

Patent number
CN116178251A
Jurisdiction
CN
Classification
—
Expires
2023-05-30
Drug substance claim
No
Drug product claim
No
Assignee
Shanghai Huilun Jiangsu Pharmaceutical Co ltd
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

Track this patent

Get a daily-checked alert when vulnerability score, expiry, classification, or assignee changes. Email, Slack, or Teams delivery. Pro: 50 watches, Free: 3.