CN Patent

CN111995618B — 一种来那替尼杂质g的制备方法

Assigned to Chongqing Medical University · Expires 2021-06-11 · 5y expired

What this patent protects

本发明提供一种来那替尼杂质G的制备方法,以N,N‑二甲胺基反式巴豆酸为原料,通过催化剂、溶剂以及反应温度的精心配合,有效的避免了喹啉环中侧链酰胺水解,实现目标产物收率可达44%以上,产物在不需要过柱处理的条件下即可实现99.0%以上的纯度。本发明制备方法简单,原料价廉易得,反应条件温和,不需要大型设备,终产物收率高,纯度高,适合工业化应用。

USPTO Abstract

本发明提供一种来那替尼杂质G的制备方法,以N,N‑二甲胺基反式巴豆酸为原料,通过催化剂、溶剂以及反应温度的精心配合,有效的避免了喹啉环中侧链酰胺水解,实现目标产物收率可达44%以上,产物在不需要过柱处理的条件下即可实现99.0%以上的纯度。本发明制备方法简单,原料价廉易得,反应条件温和,不需要大型设备,终产物收率高,纯度高,适合工业化应用。

Drugs covered by this patent

Patent Metadata

Patent number
CN111995618B
Jurisdiction
CN
Classification
Expires
2021-06-11
Drug substance claim
No
Drug product claim
No
Assignee
Chongqing Medical University
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.

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