ammonolysis of a lactone moiety in tricyclic cycloadducts derived from non-racemic five-membered cyclic nitrone and 2(5H)-furanones furnishes an amido function, which after subsequent Hofmann rearrangement, leads to a protected amino group attached to the bicyclic isoxazolidine skeleton. A successive simple transformation, involving cleavage of N–O bond followed by intramolecular N-alkylation, provides an access
                                    非外消旋五元环硝酮和2(5 H)-
呋喃酮衍生的
三环环加合物中内酯部分的
氨解作用提供了酰胺基功能,在随后的霍夫曼重排之后,该官能团导致连接到双环
异恶唑烷骨架上的受保护的
氨基基团。连续的简单转化涉及到N-O键的断裂,然后是分子内的N-烷基化,提供了进入多羟基化7-
氨基
吡咯烷核苷和8-
氨基
吲哚并核苷的途径,这是潜在的糖苷酶
抑制剂。