酮还原酶在罗苏伐他汀制备中的应用
On Application of Ketoreductase in Production of Rosuvastatin
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摘要: 将酮还原酶应用于降血脂药罗苏伐他汀的制备.通过高通量筛选,酮还原酶KRED‐4可催化罗苏伐他汀乙酯的制备反应.经过反应条件的初步优化后,确定了该酶催化反应的最适温度为25~35℃、最适p H值为6.0、初始底物浓度1g/L和酶浓度2g/L.在最优条件下,可将底物1完全转化为产物2罗苏伐他汀乙酯,产物的构型完全正确,且de>99.9%,为建立罗苏伐他汀制备的绿色工艺提供了新的思路.Abstract: Ketoreductasehas been used in a synthesis of the lipid‐lowering agent Rosuvastatin .By high‐throughput screening ,KRED‐4has beenpicked up to prepare Rosuvastatin ethyl ester .After a preliminary optimization ,the enzymatic reactiontemperature 25℃ ~35℃ ,pH6 .0 ,initial substrate concentration1g/L and enzyme concentration 2g/Lhave been determined .In optimal conditions ,the substrate can be com‐pletely transformed into the product of Rosuvastatin ethyl ester .The configuration of the product is entire‐ly correct ,and the de>99 .9% ,providinga new idea for the green technology of Rosuvastatin prepared .
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