双相生物电催化合成化β-化
Fangyuan Dong1, Hui Chen1, Christian A Malapit1
1Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States.
这项研究引入了双相生物电催化系统,以克服基于氧化还原酶的合成挑战. 这种新系统有效地再生减少的辅因子 (NADH) 并改善基质溶解性,使得性β-基的高产量.
科学领域:
- 生物催化和合成化学
- 生物电化学和绿色化学
背景情况:
- 基于氧化还原酶的非对称合成因高辅助因子消耗和基质在水中溶解度差而面临限制.
- 基拉尔β-基亚是有价值的中间体,特别是在他类药物合成中,强调了需要高效的生产方法.
研究的目的:
- 开发一种双相生物电催化系统,以解决基于氧化还原酶的合成中的辅因子再生和基质溶解性问题.
- 以酒精脱酶 (AdhS) 和氨酸脱酶 (HHDH) 为模型,证明该系统在产生性β-氧烯酸中的有效性.
主要方法:
- 使用甲基三乙烯 (MTBE) 作为有机相的双相系统的构建.
- 在电极 (DH/Cc-PAA生物电极) 上将隔离酶 (DH) 固定在基改性聚胺氧化还原聚合物上,以进行NADH再生.
- 用AdhS和再生的NADH将乙基4-乙 (COBE) 电催化转化为奇拉性β-基.
主要成果:
- 双相系统显著提高了产品的度和度,在10小时后达到25. 5毫米,使用率为81. 2%.
- 与单相系统相比,COBE的转换率是8.8倍,达到85%的转换率.
- 有机阶段 (MTBE) 改善了基板负荷,防止了水解,延长了电极寿命,并提高了法拉第效率.
结论:
- 开发的双相生物电催化系统有效地克服了基于氧化还原酶的不对称合成的关键局限性.
- 这种方法显示了具有多样性结构的各种奇拉性β-基亚的高效和可扩展的生产潜力.
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