CN Patent

CN109553649B — 一种卡格列净中间体的制备方法

Assigned to Lireke Shanghai Department Store Co ltd · Expires 2020-12-04 · 5y expired

What this patent protects

本发明涉及一种卡格列净中间体的制备方法,所述制备方法包括以下步骤:1)在惰性环境,‑30℃~‑15℃的温度下,噻吩类化合物与碱性试剂及2,3,4,6‑四‑O‑(三甲基硅基)‑D‑葡萄糖酸内酯充分反应;2)在将步骤1)所得反应液中滴加含有强酸的甲醇溶液,充分反应后,淬灭,提纯,即得卡格列净中间体。本发明所述的制备方法制得的产品收率好、纯度高;对设备温度需求低、操作更安全、设备体积需求小,该方法更适合工业化放大生产。

USPTO Abstract

本发明涉及一种卡格列净中间体的制备方法,所述制备方法包括以下步骤:1)在惰性环境,‑30℃~‑15℃的温度下,噻吩类化合物与碱性试剂及2,3,4,6‑四‑O‑(三甲基硅基)‑D‑葡萄糖酸内酯充分反应;2)在将步骤1)所得反应液中滴加含有强酸的甲醇溶液,充分反应后,淬灭,提纯,即得卡格列净中间体。本发明所述的制备方法制得的产品收率好、纯度高;对设备温度需求低、操作更安全、设备体积需求小,该方法更适合工业化放大生产。

Drugs covered by this patent

Patent Metadata

Patent number
CN109553649B
Jurisdiction
CN
Classification
Expires
2020-12-04
Drug substance claim
No
Drug product claim
No
Assignee
Lireke Shanghai Department Store 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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