Gram-Scale Synthesis of Chiral Cyclopropane-Containing Drugs and Drug Precursors with Engineered Myoglobin Catalysts Featuring Complementary Stereoselectivity
作者:Priyanka Bajaj、Gopeekrishnan Sreenilayam、Vikas Tyagi、Rudi Fasan
DOI:10.1002/anie.201608680
日期:2016.12.23
In combination with whole‐cell biotransformations, these stereocomplementary biocatalysts enabled the multigram synthesis of the chiral cyclopropane core of four drugs (Tranylcypromine, Tasimelteon, Ticagrelor, and a TRPV1 inhibitor) in high yield and with excellent diastereo‐ and enantioselectivity (98–99.9% de; 96–99.9% ee). These biocatalytic strategies outperform currently available methods to produce
工程化血红素蛋白最近已成为促进不对称环丙烷化的有前景的系统,但在这些反应中具有可预测、互补立体选择性的变体仍然难以捉摸。在这项研究中,实施了一种合理驱动的策略,并将其应用于工程肌红蛋白变体,这些变体能够提供具有高反式(1R,2R)选择性和催化活性的1-羧基-2-芳基-环丙烷。这些环丙烷化生物催化剂的立体选择性补充了此处和之前开发的反式(1S,2S)选择性变体的立体选择性。与全细胞生物转化相结合,这些立体互补生物催化剂能够以高产率合成四种药物(反苯环丙明、他司美琼、替格瑞洛和 TRPV1 抑制剂)的手性环丙烷核心,并具有优异的非对映和对映选择性(98-99.9%) de;96–99.9% ee)。这些生物催化策略优于目前可用的生产这些药物的方法。