Processes utilizing treatment with Candida Antarctica lipase B ("CAL-B") or Candida Antarctica lipase A ("CAL-A") for desymmetiϊzation of a prochiral di-ester compound of formula (I): wherein R is a C1-C4 alkyl group, R1 is a hydrogen; a C1-C4 acyl, preferably acetyl, propanoyl or butyryl; or a C1-C6 alkyl group, preferably methyl or ethyl, and n is 1, 2 or 3, to prepare the corresponding optically pure (S)-mono-ester according to formula (II).
使用Candida Antarctica
脂肪酶B(“CAL-B”)或Candida Antarctica
脂肪酶A(“CAL-A”)处理的过程,用于对式(I)的非对称二酯化合物进行去对称化,其中R是C1-C4烷基,R1是氢; C1-C4酰基,优选为乙酰基,丙酰基或丁酰基; 或C1-C6烷基,优选为甲基或乙基,n为1,2或3,以制备相应的光学纯(S)-单酯,其
化学式为(II)。