A new asymmetric entry to 2-substituted piperidines. A concise synthesis of (+)-coniine, (−)-pelletierine, (+)-δ-coniceine, and (+)-epidihydropinidine
作者:Hiroki Takahata、Minoru Kubota、Seiki Takahashi、Takefumi Momose
DOI:10.1016/0957-4166(96)00395-3
日期:1996.10
A new asymmetric route to 2-substituted piperidines involving the Sharpless asymmetric dihydroxylation (AD) of 5-hexenylazide 1 and an intramolecular aminocyclization as crucial steps and its application to the asymmetric synthesis of four piperidine alkaloids, (+)-coniine 2, (−)-pelletierine 3, (+)-δ-coniceine 4, and (+)-epidihydropinidine 5 is presented.
涉及5-己烯基叠氮化物1的Sharpless不对称二羟基化(AD)和分子内氨基环化作为关键步骤的2取代哌啶的新不对称路线及其在四个哌啶生物碱(+)-coniine 2的不对称合成中的应用,(-呈现了)-Peltierine 3,(+)-δ-可卡因4和(+)-epidihydropinidine 5。