Thermodynamic epimeric equilibration and crystallisation-induced dynamic resolution of lobelanine, norlobelanine and related analogues
作者:Z. Amara、G. Bernadat、P.-E. Venot、P. Retailleau、C. Troufflard、E. Drège、F. Le Bideau、D. Joseph
DOI:10.1039/c4ob01787k
日期:——
β-aminoketone subunit, lobelanine is prone to self-catalyze mutarotation in solution. Through the synthesis of original lobelanine analogues, we studied the influence of (i) the size of the central heterocycle, (ii) the bulkiness of the nitrogen protecting group, and (iii) the phenacyl arm substituent on the thermodynamic equilibrium and its displacement by crystallisation-induced dynamic resolution
The present invention relates to a shortened process for preparing L-lobeline by rhodium-catalysed asymmetric hydrogenation on an industrial scale.
本发明涉及一种缩短工业规模上通过铑催化不对称氢化制备L-洛贝林的过程。
Enantioselective Synthesis of Lobeline via Nonenzymatic Desymmetrization
作者:Vladimir B. Birman、Hui Jiang、Ximin Li
DOI:10.1021/ol071064i
日期:2007.8.1
Lobeline has been prepared in enantiopure form via desymmetrization of lobelanidine with use of BTM, a nonenzymatic enantioselective acyl transfer catalyst.