CN Patent

CN109206487B — 改良的特拉万星或其盐的制备方法

Assigned to Chia Tai Tianqing Pharmaceutical Group Co Ltd · Expires 2022-04-12 · 4y expired

What this patent protects

本发明属于药物合成领域，具体而言涉及一种改良的特拉万星或其盐的制备方法。该制备方法调整曼尼希反应投料顺序，控制反应温度，大大缩短反应时间，并使双‑曼尼希副产物的含量明显降低。另外，通过低沸点溶剂进行后处理得到的中间体化合物III，易于工业操作，纯度达到95％以上。

USPTO Abstract

本发明属于药物合成领域，具体而言涉及一种改良的特拉万星或其盐的制备方法。该制备方法调整曼尼希反应投料顺序，控制反应温度，大大缩短反应时间，并使双‑曼尼希副产物的含量明显降低。另外，通过低沸点溶剂进行后处理得到的中间体化合物III，易于工业操作，纯度达到95％以上。

Drugs covered by this patent

Patent Metadata

Patent number
CN109206487B
Jurisdiction
CN
Classification
—
Expires
2022-04-12
Drug substance claim
No
Drug product claim
No
Assignee
Chia Tai Tianqing Pharmaceutical Group 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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