Regiospecific C–H amination of (−)-limonene into (−)-perillamine by multi-enzymatic cascade reactions
Yue Ge , Zheng-Yu Huang , Jiang Pan , Chun-Xiu Li , Gao-Wei Zheng , Jian-He Xu
Bioresources and Bioprocessing ›› 2022, Vol. 9 ›› Issue (1) : 88
Regiospecific C–H amination of (−)-limonene into (−)-perillamine by multi-enzymatic cascade reactions
(−)-Limonene, one of cyclic monoterpenes, is an important renewable compound used widely as a key building block for the synthesis of new biologically active molecules and fine chemicals. (−)-Perillamine, as derived from (−)-limonene, is a highly useful synthon for constructing more complicated and functionally relevant chemicals.
We aimed to report a more sustainable and more efficient method for the regiospecific C–H amination of (−)-limonene into (−)-perillamine.
Here, we report an artificial penta-enzymatic cascade system for the transformation of the cheap and easily available (−)-limonene into (−)-perillamine for the first time. This system is composed of cytochrome P450 monooxygenase, alcohol dehydrogenase and w-transaminase for the main reactions, as well as formate dehydrogenase and NADH oxidase for cofactor recycling. After optimization of the multi-enzymatic cascade system, 10 mM (−)-limonene was smoothly converted into 5.4 mM (−)-perillamine in a one-pot two-step biotransformation, indicating the feasibility of multi-enzymatic C7-regiospecific amination of the inert C–H bond of (−)-limonene. This method represents a concise and efficient route for the biocatalytic synthesis of derivatives from similar natural products.
CYP153A7 / (−)-Limonene / Multi-enzyme cascade / Regiospecific C–H amination / (−)-Perillamine / Transaminase
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