Practical Synthesis of BILA 2157 BS, a Potent and Orally Active Renin Inhibitor: Use of an Enzyme-Catalyzed Hydrolysis for the Preparation of Homochiral Succinic Acid Derivatives
作者:Pierre L. Beaulieu、James Gillard、Murray Bailey、Christian Beaulieu、Jean-Simon Duceppe、Pierre Lavallée、Dominik Wernic
DOI:10.1021/jo990321x
日期:1999.9.1
(with several integrated, multistep operations) from aminodiol 4. The key step in the synthesis involves the use of an enantiospecific, enzyme-catalyzed hydrolysis of a substituted succinate diester to provide a homochiral succinic acid derivative in 98% enantiomeric excess (>/=2.5 kg scale). Recycling of the unwanted enantiomer is accomplished through base-catalyzed racemization, leading to an efficient
我们已经开发出BILA 2157 BS(一种有效的口服活性肾素抑制剂)的高度收敛和立体选择性合成。合成过程从氨基二醇4开始,经过15个不同的化学步骤(具有多个集成的多步操作),合成中的关键步骤涉及使用对映体特异性,酶催化的取代琥珀酸酯二酯水解,以提供纯手性琥珀酸衍生物。 98%对映体过量(> / = 2.5千克规模)。不需要的对映异构体的再循环是通过碱催化的外消旋作用完成的,从而导致了起始外消旋二酯的高效脱硫。整个序列无需色谱纯化即可进行,并提供具有> 97%均一性的产物。此外,与之前报道的BILA 2157 BS合成相比,