Kinetic resolution of (RS)-1-chloro-3-(4-(2-methoxyethyl)phenoxy)propan-2-ol: a metoprolol intermediate and its validation through homology model of Pseudomonas fluorescens lipase
作者:Surbhi Soni、Bharat P. Dwivedee、Vishnu K. Sharma、Uttam C. Banerjee
DOI:10.1039/c7ra06499c
日期:——
In the present study Pseudomonas fluorescens lipase (PFL) was screened as a time efficient biocatalyst for the kinetic resolution of a racemic intermediate [(RS)-1-chloro-3-(4-(2-methoxyethyl)phenoxy)propan-2-ol] of metoprolol, an important selective β1-blocker drug. PFL selectively acylated the R-form of this racemic intermediate in a short duration of 3 h. Different reaction parameters were optimized
在本研究中,荧光假单胞菌脂肪酶(PFL)被筛选为时间有效的生物催化剂,用于动力学拆分外消旋中间体[(RS)-1-氯-3-(4-(2-甲氧基乙基)苯氧基)丙烷-2-醇]美托洛尔,一个重要的选择性β 1周受体阻滞剂的药物。PFL在3小时的短时间内选择性地酰化了该外消旋中间体的R-形式。优化了不同的反应参数以实现最大对映选择性。发现在30°C下,酶活性为400单位,底物浓度为10 mM,在3小时的最佳时间内具有很高的对映选择性和转化率(C = 50.5%,ee p = 97.2%,ee s = 95.4% ,E = 182)。为了验证这些实验结果,使用同源性建模建立了PFL的3D结构。通过Ramachandran图(在有利区92.7%),Errat地块(总的品质因数,79.27%),该模型的验证,验证-3D得分(86.19)和ProSA_ ž得分(-6.24)所描述的模型的整体质量好。所述的分子对接-