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卷 25, 期 46, 页码 8215-8219出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.3c03170
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In this study, the asymmetric synthesis of (+)-vellosimine was achieved in 13 steps (longest linear sequences, LLS). The synthesis featured a sequential nucleophilic addition/cyclization process and highlighted the reductive cyclization of a ketone with an attached alpha,beta-unsaturated ester for constructing the strained quinuclidine moiety.
Herein, we achieved the asymmetric synthesis of (+)-vellosimine in 13 steps (longest linear sequences, LLS). This synthesis featured a sequential nucleophilic addition/cyclization process, which provided an efficient protocol for synthesizing a range of indole fused azabicyclo[3.3.1]nonane. Additionally, a SmI2-mediated reductive cyclization of ketone with an attached alpha,beta-unsaturated ester for constructing the strained quinuclidine moiety was also highlighted.
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