Organolithium-Mediated Conversion of b-Alkoxy Aziridines into Allylic Sulfonamides: Effect of the N-Sulfonyl Group and a Formal Synthesis of (?-Perhydrohistrionicotoxin.

[摘要]：In 18 out of 20 examples of the organolithium-mediated conversion of b-alkoxy aziridines into substituted allylic sulfonamides, use of a Bus (Bus = t-BuSO2) substituent on the nitrogen gave higher yields compared to the analogous N-Ts compds. The success with the N-Bus aziridines facilitated the development of a new route to the spirocyclic core I of the histrionicotoxins and completion of a formal synthesis of (?-perhydrohistrionicotoxin.

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