CN Patent

CN1763046A — 头孢类抗生素的制备方法

Assigned to Shanghai Luwan District Guanglu Trade Ltd Co · Expires 2006-04-26 · 20y expired

What this patent protects

本发明涉及一种制备头孢类抗生素的新方法。该方法涉及先将起始原料7－氨基－3－羟甲基头孢烷酸的C7位酰化，然后用产品所需的相应酯基团酯化C2位上的羧基，再将所得产物的C3位功能化。采用本发明方法减少了反应步骤、提高了合成总收率、降低了成本，同时也减少了化学物质对环境的污染。

USPTO Abstract

本发明涉及一种制备头孢类抗生素的新方法。该方法涉及先将起始原料7－氨基－3－羟甲基头孢烷酸的C7位酰化，然后用产品所需的相应酯基团酯化C2位上的羧基，再将所得产物的C3位功能化。采用本发明方法减少了反应步骤、提高了合成总收率、降低了成本，同时也减少了化学物质对环境的污染。

Drugs covered by this patent

Patent Metadata

Patent number: CN1763046A
Jurisdiction: CN
Classification: —
Expires: 2006-04-26
Drug substance claim: No
Drug product claim: No
Assignee: Shanghai Luwan District Guanglu Trade Ltd Co
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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