Exploring the Scope of Asymmetric Synthesis of β-Hydroxy-γ-lactams via Noyori-type Reductions
作者:Denis Lynch、Rebecca E. Deasy、Leslie-Ann Clarke、Catherine N. Slattery、U. B. Rao Khandavilli、Simon E. Lawrence、Anita R. Maguire、Nicholas A. Magnus、Humphrey A. Moynihan
DOI:10.1021/acs.orglett.6b02416
日期:2016.10.7
Enantio- and diastereoselective hydrogenation of β-keto-γ-lactams with a ruthenium–BINAP catalyst, involving dynamic kinetic resolution, has been employed to provide a general, asymmetric approach to β-hydroxy-γ-lactams, a structural motif common to several bioactive compounds. Full conversion to the desired β-hydroxy-γ-lactams was achieved with high diastereoselectivity (up to >98% de) by addition
用钌-BINAP催化剂对β-酮-γ-内酰胺进行对映和非对映选择性加氢反应,涉及动态动力学拆分,已被用来为β-羟基-γ-内酰胺提供通用,不对称的方法,这是几种化合物共有的结构基序生物活性化合物。通过添加催化的HCl和LiCl,可以以高非对映选择性(至多> 98%de)完全转化为所需的β-羟基-γ-内酰胺,而酮基取代基的β-支化显示出适度至优异的显着效果。获得对映体选择性(至多97%ee)。