CN Patent

CN118290429B — 非唑奈坦中间体及非唑奈坦的制备方法

Assigned to Shandong Langnuo Pharmaceutical Co ltd · Expires 2024-10-11 · 2y expired

What this patent protects

本发明中公开了一种非唑奈坦中间体及非唑奈坦的制备方法,发明人通过保护基对初始原料的胺基进行保护,减少了副产物的生成,制备的非唑奈坦中间体和非唑奈坦的收率高,降低了物料成本。发明人采用含有烷基醇的溶剂进行胺基保护基的脱除,反应条件温和、易操作,避免使用酸、碱等试剂脱除保护导致消旋体杂质产生。获得的非唑奈坦中间体和非唑奈坦产物无需进行手性拆分,通过析晶纯化精制即可得到高手性纯度的产品,纯化精制操作简单,简化了整体制备工艺,适宜进行产业化放大生产。

USPTO Abstract

本发明中公开了一种非唑奈坦中间体及非唑奈坦的制备方法,发明人通过保护基对初始原料的胺基进行保护,减少了副产物的生成,制备的非唑奈坦中间体和非唑奈坦的收率高,降低了物料成本。发明人采用含有烷基醇的溶剂进行胺基保护基的脱除,反应条件温和、易操作,避免使用酸、碱等试剂脱除保护导致消旋体杂质产生。获得的非唑奈坦中间体和非唑奈坦产物无需进行手性拆分,通过析晶纯化精制即可得到高手性纯度的产品,纯化精制操作简单,简化了整体制备工艺,适宜进行产业化放大生产。

Drugs covered by this patent

Patent Metadata

Patent number
CN118290429B
Jurisdiction
CN
Classification
Expires
2024-10-11
Drug substance claim
No
Drug product claim
No
Assignee
Shandong Langnuo 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.

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