CN Patent

CN108129482A — 一种巴瑞替尼的制备方法

Assigned to Jiangsu Zhongbang Pharmaceutical Coltd · Expires 2018-06-08 · 8y expired

What this patent protects

本发明公开了一种巴瑞替尼的制备方法，属于药物制备技术领域，该方法以4‑氯吡咯并嘧啶为起始原料，先进行氨基保护，后与水合肼及丙烯醛“一锅法”取代、关环得到中间4。起始原料1，3‑二溴丙酮和乙二醇缩合得到中间体5，中间体5与乙基磺酰胺缩合得到中间体6，中间体6与氰甲基磷酸二乙酯在强碱下反应制备得到中间体7，中间体4和中间体7在催化剂作用发生加成反应、脱保护得多目标产物1。该工艺反应条件温和，中间体纯化方法简单易行，总收率高达40～55％，适合工业化生产。

USPTO Abstract

本发明公开了一种巴瑞替尼的制备方法，属于药物制备技术领域，该方法以4‑氯吡咯并嘧啶为起始原料，先进行氨基保护，后与水合肼及丙烯醛“一锅法”取代、关环得到中间4。起始原料1，3‑二溴丙酮和乙二醇缩合得到中间体5，中间体5与乙基磺酰胺缩合得到中间体6，中间体6与氰甲基磷酸二乙酯在强碱下反应制备得到中间体7，中间体4和中间体7在催化剂作用发生加成反应、脱保护得多目标产物1。该工艺反应条件温和，中间体纯化方法简单易行，总收率高达40～55％，适合工业化生产。

Drugs covered by this patent

Patent Metadata

Patent number
CN108129482A
Jurisdiction
CN
Classification
—
Expires
2018-06-08
Drug substance claim
No
Drug product claim
No
Assignee
Jiangsu Zhongbang Pharmaceutical Coltd
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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