Cyclic Imine Nitro-Mannich/Lactamization Cascades: A Direct Stereoselective Synthesis of Multicyclic Piperidinone Derivatives
摘要:
An efficient nitro-Mannich/lactamization cascade of gamma-nitro esters with cyclic imines for the preparation of architecturally complex multicyclic piperidinone ring-containing structures has been developed. The reaction is broad in scope and stereoselective and may be coupled to an enantioselective nitroolefin Michael addition reaction as part of a highly enantio- and diastereoselective multicomponent process.