Continuous-flow synthesis of polysubstituted γ-butyrolactones via enzymatic cascade catalysis
作者:Liliang Chu、Xiaoyan Zhang、Jianing Li、Xuelei Deng、Miao Wu、Ya Cheng、Weiping Zhu、Xuhong Qian、Yunpeng Bai
DOI:10.1016/j.cclet.2023.108896
日期:2024.4
Polysubstituted chiral -butyrolactones are the core structural units of many natural products and high value-added flavors and fragrances used in the food and cosmetic industry. Current enzymatic cascade synthesis of these molecules faces the problems of low enzyme activity and phase separation in batch reaction, resulting in low productivity. Herein, we report a new continuous-flow process to synthesize the
多取代手性丁内酯是食品和化妆品行业中使用的许多天然产物和高附加值香精香料的核心结构单元。目前这些分子的酶级联合成面临着酶活性低和间歇反应中相分离的问题,导致生产率低下。在此,我们报告了一种新的连续流程,从 不饱和酮酯合成光学纯内酯 (3,4)- 和威士忌内酯 (34)-。通过定向进化设计了一种新的烯还原酶(ER)和羰基还原酶(CR),以提高其活性和热稳定性。连续流动制备反应在两个 3D 微流体反应器中进行,产生 (3,4)-(99% 和 87%)和 (34)-(99% 和 98%),时空产率分别高出 3 倍和 7.4 倍与间歇反应相比。前沿的连续微流控技术带来的酶级联催化生产力的显着提升将有利于未来通用的多酶催化系统。