CN Patent

CN111205222B — 吡啶环化合物的制备方法

Assigned to Guangdong HEC Pharmaceutical Co Ltd · Expires 2024-02-06 · 2y expired

What this patent protects

本发明提供了一种吡啶环化合物的制备方法，属于医药化工领域；本发明所述方法通过将3,5‑二羟基吡啶甲酸、浓硫酸和醇溶剂混合，酯化反应得到得3,5‑二羟基吡啶甲酸甲酯；再依次通过上保护基团、氨化，得到{[5‑(3‑氯苯基)‑3‑羟基吡啶‑2‑基]氨基}乙酸。该方法生产得到的产物纯度高，收率高，成本低，操作简单，工艺稳定的特点。

USPTO Abstract

本发明提供了一种吡啶环化合物的制备方法，属于医药化工领域；本发明所述方法通过将3,5‑二羟基吡啶甲酸、浓硫酸和醇溶剂混合，酯化反应得到得3,5‑二羟基吡啶甲酸甲酯；再依次通过上保护基团、氨化，得到{[5‑(3‑氯苯基)‑3‑羟基吡啶‑2‑基]氨基}乙酸。该方法生产得到的产物纯度高，收率高，成本低，操作简单，工艺稳定的特点。

Drugs covered by this patent

Patent Metadata

Patent number
CN111205222B
Jurisdiction
CN
Classification
—
Expires
2024-02-06
Drug substance claim
No
Drug product claim
No
Assignee
Guangdong HEC 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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