Development of an asymmetric formal synthesis of (−)-quinagolide <i>via</i> enzymatic resolution and stereoselective iminium ion reduction
作者:Lucrezia Margherita Comparini、Andrea Menichetti、Lucilla Favero、Sebastiano Di Pietro、Fabrizio Badalassi、Per Ryberg、Mauro Pineschi
DOI:10.1039/d3ob00946g
日期:——
stereoselective reduction of a diastereoisomeric mixture of benzo[g]octahydroquinolinium ion was examined in detail. A diastereoselective borohydride reduction in combination with an efficient deacylative enzymatic resolution of its β-aminoester precursor are the key steps for a stereoselective installation of the three chiral centres present in the (3S,4aS,10aR)-eutomer of the medicinal drug quinagolide. The
详细研究了苯并[ g ]八氢喹啉鎓离子的非对映异构混合物的立体选择性还原。非对映选择性硼氢化物还原与其 β-氨基酯前体的有效脱酰酶解相结合是立体选择性安装药物 (3 S ,4a S ,10a R )-eutomer中存在的三个手性中心的关键步骤喹高利特。获得的数据为简单实用地获得手性3-取代八氢苯并[ g ]喹啉铺平了道路,手性3-取代八氢苯并[g]喹啉是药物化学中的特殊结构。