A new approach to the asymmetric synthesis of α-substituted serine analogues was developed. The method utilizes a lipase-catalyzed esterification desymmetrization protocol. In the presence of PPL, a series of benzyl-substituted quaternary 2-nitropropane-1,3-diols were successfully desymmetrized by selective acetylation in very good yields and enantioselectivities (up to 95% ee).
开发了一种新的α取代
丝氨酸类似物不对称合成方法。该方法利用
脂肪酶催化的酯化去对称化方案。在 PPL 存在下,一系列苄基取代的季
铵 2-硝基丙烷-1,3
-二醇通过选择性乙酰化成功地去对称化,具有非常好的产率和对映选择性(高达 95% ee)。