CN Patent

CN103864670B — 阿普司特的制备方法

Assigned to Xuzhou Xinhui Bioenergy Technology Co ltd · Expires 2015-08-26 · 11y expired

What this patent protects

本发明揭示了一种阿普司特(Apremilast，I)的制备方法，其制备步骤包括：(R)-1-(α-氨基苄基)-2-萘酚(II)与3-乙氧基-4-甲氧基苯甲醛(III)缩合生成(1R，3S)-1-苯基-3-(3-乙氧基-4-甲氧基苯基)-2，3-二氢-1H-萘[1，2-e][1，3]噁嗪(IV)，中间体(IV)与二甲基砜单锂盐发生开环加成反应生成N-[(2S)-(1-(3-乙氧基-4-甲氧基苯基)-2-甲磺酰基乙基)]-(1R)-(α-氨基苄基)-2-萘酚(V)，中间体(V)经过氢化还原反应制得(S)-2-[1-(3-乙氧基-4-甲氧基苯基)]-1-甲磺酰…

USPTO Abstract

本发明揭示了一种阿普司特(Apremilast，I)的制备方法，其制备步骤包括：(R)-1-(α-氨基苄基)-2-萘酚(II)与3-乙氧基-4-甲氧基苯甲醛(III)缩合生成(1R，3S)-1-苯基-3-(3-乙氧基-4-甲氧基苯基)-2，3-二氢-1H-萘[1，2-e][1，3]噁嗪(IV)，中间体(IV)与二甲基砜单锂盐发生开环加成反应生成N-[(2S)-(1-(3-乙氧基-4-甲氧基苯基)-2-甲磺酰基乙基)]-(1R)-(α-氨基苄基)-2-萘酚(V)，中间体(V)经过氢化还原反应制得(S)-2-[1-(3-乙氧基-4-甲氧基苯基)]-1-甲磺酰基-2-乙胺(中间体B)，中间体B与3-乙酰氨基邻苯二甲酸酐(中间体A)缩合制得阿普司特(I)。该制备方法原料易得，工艺简洁，经济环保，适合工业化生产。

Drugs covered by this patent

Patent Metadata

Patent number
CN103864670B
Jurisdiction
CN
Classification
—
Expires
2015-08-26
Drug substance claim
No
Drug product claim
No
Assignee
Xuzhou Xinhui Bioenergy Technology 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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