Efficient synthesis of polyfunctionalised enantiopure diazepanone scaffolds
作者:Olivier Monasson、Maryon Ginisty、Gildas Bertho、Christine Gravier-Pelletier、Yves Le Merrer
DOI:10.1016/j.tetlet.2007.09.098
日期:2007.11
The synthesis of polyfunctionalised enantiopure 1,4-diazepan-3-one scaffolds from l-serine derivatives and azidoepoxides readily available from either l-ascorbic or d-isoascorbic acid, allowing access to various configurations at chiral centres, is described. The key steps are the nucleophilic opening of the epoxide by the amine of serine followed by a lactonisation–lactamisation sequence.
作者:Olivier Monasson、Maryon Ginisty、Janez Mravljak、Gildas Bertho、Christine Gravier-Pelletier、Yves Le Merrer
DOI:10.1016/j.tetasy.2009.09.022
日期:2009.10
The synthesis of new enantiopure polyfunctionalised diazepanone scaffolds is described. The key steps involve the opening of an azido-epoxide C4 building block derived from L-ascorbic or D-isoascorbic acid by a L-serine derivative followed by a lactonisation-lactamisation two-step sequence. (C) 2009 Elsevier Ltd. All rights reserved.