Chemoenzymatic Synthesis of (R) - and (S) - Atenolol and Propranolol employing Lipase Catalyzed Enantioselective Esterification and Hydrolysis
作者:Subhash V. Darnle、Prashant N. Patil、Manikrao M. Salunkhe
DOI:10.1080/00397919908085905
日期:1999.11
Abstract Chemoenzymaticsynthesis of (R) - and (S) - atenolol and propranolol employing lipase catalyzed enantioselective esterification and hydrolysis is described
摘要 描述了使用脂肪酶催化的对映选择性酯化和水解的 (R) - 和 (S) - 阿替洛尔和普萘洛尔的化学酶促合成
Fast liquid chromatography for racemic atenolol acetate separation-The analytical protocol
作者:Joni Agustian、Azlina Harun Kamaruddin、Hassan Y. Aboul-Enein
DOI:10.1002/chir.22769
日期:2017.12
Kineticresolution of (R,S)‐atenolol is a faster strategy to produce (S)‐atenolol. Since this racemate is a less soluble compound, resolution of its ester offers high concentrations in the process. A good analytical method is required to observe the enantiomer concentrations. This paper described application of ultra‐fast liquid chromatography on the atenolol ester separationusing different resolution
(R,S)-替诺洛尔的动力学拆分是生产(S)-替诺洛尔。由于该外消旋物是难溶的化合物,因此其酯的拆分可在此过程中提供高浓度。需要一种好的分析方法来观察对映体的浓度。本文介绍了使用不同分辨率的介质和分析程序在阿替洛尔酯分离中超快速液相色谱的应用。Chiralcel OD柱分离了该酯。色谱图表明了该方法的不同特征。对映体可以在不到1(一)小时的时间内被色谱柱识别。获得了对称峰,但几种方法产生的峰具有较宽的碱基和倾斜的基线。在高流动相流速下,获得有效的对映体拆分,降低胺型改性剂的浓度,但增加流动相中的酒精含量。需要高的紫外线检测波长。在1.0 mL / min的条件下,生成(90/10 / 0.5)组合物α = 1.46和R S = 0.9998,具有良好的分离效果。
FIXED DOSE DRUG COMBINATION FORMULATIONS
申请人:Dr. Reddy's Laboratories Ltd.
公开号:EP2424509A2
公开(公告)日:2012-03-07
[EN] FIXED DOSE DRUG COMBINATION FORMULATIONS<br/>[FR] FORMULATIONS DE COMBINAISON DE MÉDICAMENT À DOSE FIXE
申请人:REDDYS LAB LTD DR
公开号:WO2010127205A2
公开(公告)日:2010-11-04
Pharmaceutical formulations comprising multiple drugs, for treating or preventing cardiovascular disease. Embodiments are capsules containing individual drugs, or combinations of drugs, in the form of small tablets.