Stereoselective synthesis of highly functionalised tricyclic β-lactams via intramolecular nitrilimine cycloaddition
摘要:
The novel azeto[2',1':1,2]pyrrolo[3,4-c]pyrazole skeleton has been obtained in both racemic and enantiopure forms by means of intramolecular cycloaddition of nitrilimines 6. Fully stereoselective cycloadditions were obtained, giving tricyclic beta-lactams 7 as single diastereoisomers with good overall yields. (c) 2006 Elsevier Ltd. All rights reserved.
Stereoselective synthesis of highly functionalised tricyclic β-lactams via intramolecular nitrilimine cycloaddition
摘要:
The novel azeto[2',1':1,2]pyrrolo[3,4-c]pyrazole skeleton has been obtained in both racemic and enantiopure forms by means of intramolecular cycloaddition of nitrilimines 6. Fully stereoselective cycloadditions were obtained, giving tricyclic beta-lactams 7 as single diastereoisomers with good overall yields. (c) 2006 Elsevier Ltd. All rights reserved.