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Solid-phase Synthesis of [4.4] Spirocyclic Oximes
Published on: February 6, 2019
为了不对称合成德克斯特罗梅索芬关键中间体的工程化伊米因降解酶
Xiaofeng Lin1,2, Yixuan Li2,3, Zefei Xu2
1School of Biotechnology, Key Lab of Industrial Fermentation Microbiology of the Ministry of Education, State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China.
(S) - 1 - 4 - - 甲基) - - 八化素 ((S) - 1 - 4 - - 甲基) - - OHIQ) 是德克斯特罗梅多芬的关键中间体. 酶工程创造了一种变体 (M4),效率高766倍,使得有效的工业合成成为可能.
科学领域:
- 生物催化剂是一种生物催化剂.
- 酶工程是什么? 酶工程是什么?
- 有机合成 有机合成
背景情况:
- 作为一种非阿片类抗咳药,德克斯特罗梅索芬的合成依赖于关键的中间体 (S) - 1 - 4 - 甲基) - 1 - 2 - 3 - 4 - 5 - 5 - 6 - 7 - 8 - 八氧化素 (S) - 1 - 4 - 甲基) - OHIQ).
- 这种中间体的高效和选择性合成对于工业生产至关重要.
研究的目的:
- 为了设计一种具有显著改善的催化效率的酶,用于合成 (S) -1-(4-甲基) -OHIQ.
- 评估工程酶对工业规模生产德克斯特罗梅索芬中间体的潜力.
主要方法:
- 使用定向进化和酶工程来增强野生型IR61酶的催化活性.
- 这种被设计的酶变体,被指定为M4 ((S) -IR61-V69Y/P123A/W179G/F182I/L212V),以其性能为特征.
主要成果:
- 与野生型IR61.1.相比,酶变异M4在催化效率上表现出766倍的改善.
- M4完全将200毫米的前体基质转化为 (S) -1- ((4-甲基基) -OHIQ,具有77%的分离产量.
- 反应实现了>99%的反体过量和高的时空产量542g L-1天-1.1.
结论:
- 经过工程设计的M4酶在合成 (S) - 1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 甲基基-OHIQ时,表现出极高的催化效率和选择性.
- M4的高性能指标表明,它对于工业规模合成德克斯特罗梅索芬中间体的巨大潜力.
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