名称:
                                Total synthesis of (+)-azimic acid, (+)-julifloridine, and proposed structure ofN-methyljulifloridine via cycloaddition of nitrone to a chiral dipolarophile
                             
                            
                                摘要:
                                A combination of 1,3-dipolar cycloaddition of Z-nitrones to the chiral dipolarophile and subsequent ring transformation of the resulting adducts to the piperidinols has provided a new practical synthesis of 2,6-disubstituted 3-piperidinol alkaloids, (+)-azimic acid, (+)-julifloridine, and the proposed structure of N-methyljulifloridine. (C) 1998 Elsevier Science Ltd. All rights reserved.