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 intramol. cycloaddn. of nitrilimines. Fully stereoselective cycloaddns. were obtained, giving tricyclic b-lactams I (R = H, Me) as single diastereoisomers with good overall yields.
Stereoselective synthesis of highly functionalised tricyclic β-lactams via intramolecular nitrilimine cycloaddition / P. Del Buttero, G. Molteni. - In: TETRAHEDRON-ASYMMETRY. - ISSN 0957-4166. - 17:9(2006), pp. 1319-1321. [10.1016/j.tetasy.2006.04.029]
Stereoselective synthesis of highly functionalised tricyclic β-lactams via intramolecular nitrilimine cycloaddition
P. Del Buttero;G. Molteni
2006
Abstract
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 intramol. cycloaddn. of nitrilimines. Fully stereoselective cycloaddns. were obtained, giving tricyclic b-lactams I (R = H, Me) as single diastereoisomers with good overall yields.
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